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revision 1.121 by heimbach, Tue Jan 21 19:44:45 2003 UTC revision 1.1136 by jmc, Mon Jun 29 22:47:32 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 change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
8      and generate new output (for the 2 tests) using default rotationPeriod.
9    o pkg/exch2:
10      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
11        (was already the case with AUTODIFF_EXCH2 defined)
12      - add bj in exch2 arrays and S/R.
13      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
14        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
15    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
16      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
17        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
18      - verification experiment natl_box.longstep
19    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
20      allow different versions of ifort (8 or 9) and different versions
21       of mpi (mpich or mpich2) to be used with the same optfile.
22      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
23       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
24    o pkg/seaice:
25      fix previous modif (3-level field removed) for old-pickup reading
26    
27    checkpoint61r
28    o pkg/seaice:
29     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
30      1. introduce fields for time step (N-1)
31      2. do not use levels 2 and 3 anymore (but keep them)
32      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
33         includes changes to pkg/thsice/thsice_get_velocity.F,
34         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
35         pkg/obcs/obcs_apply_uvice.F.
36     - completely remove code for leap-frog time stepping for second order
37       advection
38     - adjusted adjoint accordingly;
39       gradient checks have improved by an order of magnitude!
40    
41    checkpoint61q
42    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
43     - the boundary conditions along open boundaries are unclear, because the
44       associated masks are set to zero and are thus treated as closed when
45       applying the slip-boundary conditions.
46     - move initialisation of grid variables from seaice_init_varia to _fixed
47    o adding doc/diags_changes.txt
48    o model/src:
49      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
50       to avoid "_diags" naming if no relation to pkg/diagnostics.
51      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
52       file and only call PLOT_FIELD_XYZ if debugMode=T.
53      remove few PLOT_FIELD_XY calls outside initialisation.
54      remove few unnecessary BARRIER.
55    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
56      of salt_plume package in Southern Ocean
57    o pkg/thsice:
58     - fix hOceMxL in overlap (needed for sea-ice advection);
59       update output of experiment global_ocean.cs32x15.icedyn.
60    o pkg/seaice:
61     - make the (placeholder-)tracer IceAge a little more meaningful
62      by avoiding ridging of age due to convergent ice flow
63     - add diagnostics for surface temperature, atmospheric and oceanic
64       heat flux, and atmospheric and oceanic ice growth
65    
66    checkpoint61p
67    o eesupp (global_max & global_sum):
68     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
69     - remove starting & endding barrier (no longer needed)
70    o pkg/mdsio, writelocal:
71       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
72       (remove the STOP): uses shared buffer IO to store data from all threads
73       and then let master-thread write nThreads tiles.
74    o pkg/mdsio (read/write field):
75     - tiled IO done in 1 piece (all levels at a time);
76     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
77     - multi-threaded: allow to read/write local (non-shared) array
78       (was already working with singleCpuIO ; now works also without);
79       => no longer needs barrier call after reading a file (added inside
80       mds_read/write field).
81     - move barrier calls outside gather/scatter_2d to mds_read/write_field
82    o pkg/obcs/exf
83      - exf_getffieldrec.F: add a few ". _d 0" and
84                            add code to catch the case fldperiod = 0.  
85      - obcs_precribe_read.F: change if statements so that they match
86                              the variable type (_RL)
87      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
88        exf_iprec) as part of namelist EXF_NML_01
89    o pkg/mdsio:
90      - read/write tiled (local) files: read/write 1-level tile chunk at a time
91        (instead of segment of length sNx); expected to speed up tiled IO.
92    o pkg/exch2:
93      - take buffer copy from/to array out of S/R exch2_send/recv into new
94        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
95        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
96      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
97      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
98        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
99        including Topology header file (and common blocks).
100      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
101        remove 2nd exch call in exch2_s3d_rx (no longer needed).
102      - document S/R arg. list (+ update some comments)
103    o pkg/seaice:
104      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
105        temperature and humidity over sea ice based on climatological values.
106      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
107        of LSR (this change is expected to change the results slightly because now
108        it uses slightly difference moduli from the second last LSR solution, but
109        that is more consistent with the stress computations; this part of the code
110        is not tested in the verification experiments)
111      - fix diagnostics for flux of ice in case of B-grid
112      - turn strain rates eij and press into global fields within global
113        common block in SEAICE.h for more straighforward diagnostics
114      - fix diagnostics for principal stress components, press, zeta, eta
115        to give something meaning full
116    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
117      new output (all 4 tests) using default rotationPeriod.
118    o pkg KPP:
119      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
120      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
121        and normal grid from 1 to Nr)
122    o Fix computations of L4rdt in mom_calc_visc.F
123    o eesupp:
124      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
125      should be called before a "stop" if we know that all process are going
126      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
127    
128    checkpoint61o
129    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
130    o model/src/ini_curvilinear_grid.F:
131       compute angleSin/CosC when they are not read from a file
132    o pkg/seaice:
133       add pseudo time stepping for LSOR
134    o pkg/exch2:
135       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
136    o pkg/seaice:
137       Adding separate sea ice albedo, drag coefficients, and HO in Southern
138       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
139    o SingleCpuIO:
140       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
141    o pkg/seaice:
142       put exchanged variable in (local) common block for MPI+Multi-Threads
143       to work (necessary with exch1, and for now with exch2 too).
144    o verification: to get more experiments tested with mpi, mth and mpi+mth,
145      change tiling of:
146       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
147       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
148      update output of exp:
149       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
150       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
151      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
152                       (note: output.txt generated on faulks using only 1 tile)
153    o eesupp & mdsio (SingleCpuIO):
154     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
155       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
156       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
157     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
158     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
159       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
160    o pkg/exch2:
161     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
162       read parameter file "data.exch2" if it exists; otherwise try default regular
163       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
164     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
165       with new code (not to be used, just as a backup solution).
166     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
167       in utils/exch2/input.
168    
169    checkpoint61n
170    o eesupp & mdsio (SingleCpuIO):
171      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
172        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
173        receive real*4 array (instead of real*8) to read/write 32.bit files.
174        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
175         and remove new mapping S/R)
176    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
177      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
178        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
179        when using exch2. Add S/R to map global io-buffer to global model array.
180      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
181    
182    checkpoint61m
183    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
184      and add 3 other S/R for other types (R4,R8,RS).
185      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
186    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
187     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
188     - reduce number of macro definitions (keep only those which are used);
189       can always call directly the corrresponding S/R if needed.
190     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
191       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
192     Fixed wrong type of arg in:
193       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
194       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
195     To fix: global_sum of var in common block is wrong (multi-threaded) in:
196       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
197     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
198    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
199      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
200    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
201    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
202      edges are closed (zero depth); might happen with "blank tiles";
203      for now, disabled if using OBCS.
204    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
205      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
206    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
207      to reduce length of 1.D array print in STDOUT.
208    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
209      + use 48 tiles (16x8): this will allow to test "blank tiles".
210    o start to test MPI + multi-threaded (change testreport to skip tests
211      where number of tiles do not match).
212    o genmake2: add option "-omp" to turn on Open-MP ;
213      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
214    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
215      and keep the original tile numbering. Note: compatible with old
216      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
217    
218    checkpoint61l
219    o Overlaps had been forgotten in calculating ijk keys : fixed
220    o fix cyrus makedepend for gcc 4.4
221    o experiment fizhi-cs-aqualev20:
222      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
223      and generate new output. Note: new output is much closer to the old
224      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
225      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
226    o pkg/fizhi:
227     - change to avoid indices going deliberately over array-bounds
228     - remove unnecessary MPI stuff
229     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
230     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
231       does not go over array-bounds and therefore returns reliable output.
232     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
233       this S/R has 4 output arguments, which are used inside "get_alarm";
234       when it is called with the same variable "ndum" in place of several
235       output arguments, this produces weird side effect inside "get_alarm"
236      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
237       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
238       address) and produces error.
239    o tools/gemake2: (March 27-29 2009)
240      with option "-mpi": link *_mpi files from "MODS" dir (this is what
241      testreport does).
242    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
243    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
244       update lab_sea.lsr & lab_sea.salt_plume results
245    o pkg/seaice:
246      Major overhaul of the LSOR solver: change discretization from original
247      finite differences to finite volume. The old routine is still in the
248      file seaice_lsr.F and can be turned on with the CPP-flag
249      SEAICE_OLD_AND_BAD_DISCRETIZATION
250      Along with this change, the discretization of the strain rates is changed.
251      The same flag turns on the old discretization in seaice_calc_strainrates.F
252      All verification experiments with seaice are affected (except for
253      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
254      results by setting the above flag.
255      Further changes involve changes in defaults:
256      - ALLOW_FLOODING is defined and turned on by default
257      - SEAICEadvSnow = .true. is now the default
258      - SEAICEadvSalt = .true. is now the default
259      - SEAICEadvAge  = .true. is now the default
260      - SEAICE_clipVelocities  = .false. is now the default
261                                         (as per J. Zhang's recommendation)
262      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
263        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
264      - seaice_growth: replace computation of UG by a simple copy from wspeed
265    
266    checkpoint61k
267    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
268      seaice_lsr: fixed a few metric terms,
269                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
270                  add more debugging diagnostics
271      seaice_evp: removed superfluous many metric terms of FV discretization
272                  of stress divergence
273                  affects lab_sea, lab_sea.hb87
274      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
275                  of stress divergence for non-evp solver
276                  (this part is not tested anywhere)
277      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
278                  they were effectively only half slip
279                  affects lab_sea.hb87
280      updated all relevant verification experiments (except lab_sea//output_adm.txt
281        which was left over, but fails at level 7 & 6)
282    
283    checkpoint61j
284    o pkg/seaice: turn a few hard wired parameters into run time parameters
285    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
286      time in seconds as promised by the usints in seaice_monitor and exf_monitor
287    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
288      that are not cubed-sphere grids
289    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
290    o pkg/ctrl:
291      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
292    o non-hydrostatic (calc_gw.F):
293      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
294      update output of exp. global_ocean.cs32x15.viscA4
295    o remove backward compatibility for thetaMin,phiMin
296      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
297    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
298      interpolated wind field not only for curvilineargrid=.true., but also
299      for a rotated grid (rotateGrid=.true.)
300    o pkg/exf: add capability to bypass interpolation for runoff
301      by setting yet another CPP-flag
302    o eesupp/src, B-grid exchange:
303      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
304    o autodiff
305      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
306      allows to switch to single-prec common blocks;
307      corresponding switch occurs in tamc.h, integer isbyte
308      TAF store directivs "byte" and "kind" seem equivalent;
309      Most tamc.h have been updated correspondingly.
310    
311    checkpoint61i
312    o autodiff:
313      fix autodiff_sore/_restore indices for obcs
314      (spotted by I. Hoteit, M. Mazloff)
315    o pkg/autodiff, pkg/ctrl:
316      Add flag to reduce all tapelev I/O to single-prec.
317      In data.ctrl set
318        doSinglePrecTapelev = .TRUE.
319    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
320      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
321    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
322      real fresh water flux (not yet)
323    o pkg/mdsio & rw:
324     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
325     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
326    o pkg/flt:
327     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
328       init_fixed & ini_varia.
329     - clean-up & simplify linear interpolation S/R:
330       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
331     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
332     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
333     - add vert. coordinate & horiz. indices to output files.
334     - change vertical position in initial condition, from index to depth [m].
335     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
336       (easier to get to a curvilinear grid) ; delX,delY no longer used.
337    o pkg/ggl90: a few modifications:
338     - fix bottom boundary condition, and interpolation of KappaE
339       near top and bottom
340     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
341     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
342     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
343    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
344      (maintain temporary backward compatibility, until next checkpoint)
345    
346    checkpoint61h
347    o pkg/diagnostics with "periodic averaging diagnostics":
348      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
349    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
350    o pkg/obcs: fix loop ranges for balancing code
351    o pkg/flt:
352     - improve criteria for finding which tile owns a float.
353     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
354    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
355      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
356      with ocean biogeo)
357    o pkg/flt:
358     - do some cleaning and fix the restart ;
359     - add output.txt in flt_example/results to get this pkg tested.
360    o genmake2: add an EXTENDED_SRC option and flag.
361       for now, cannot be turned on on command line (only through genmake_local)
362    o pkg/mdsio: read/write vector:
363     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
364     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
365       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
366     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
367      (drop to 4 digits matching for grad). But this test does not look very
368      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
369    
370    checkpoint61g
371    o pkg/flt:
372      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
373       + make OPTIONS file more standard.
374      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
375      - fix _BYTESWAPIO CPP-Flag
376      - standard reading of file-parameter "data.flt"
377      - fix argument list of S/R FLT_RESTART
378      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
379    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
380    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
381      a still unfixed compiler/optimization bug
382    
383    checkpoint61f
384    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
385      update results of global_ocean.cs32x15.icedyn test.
386    o move getcon.F from model/src to pkg/fizhi.
387    o pkg/exf: add parameter for extrapolation of temp up to the surface
388       and option to prevent negative evap (in bulk_largeyeager04 only).
389    o Prather Advection scheme: fix tracer conservation for divergent flow
390      (e.g., when using NonLin Free-Surface).
391    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
392    o gmredi (Visbeck-variable-K):
393     - add more parameters to Visbeck-variable-K.
394     - use a 5 points average for dSigmaR in Visbeck-K calculation
395       (more "homogenous": same stencil and same weights as in dSigmaH)
396     - update output of ideal_2D_oce experiment.
397    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
398      (#undef REAL4_IS_SLOW)
399     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
400       coordinate variable
401     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
402       (surface forcing fields), removes some of the functionality
403     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
404     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
405       probably not all: copy _RS surface flux fields to RL field before
406       calling DIAGNOSTICS_FILL
407     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
408       real*4 (CALL EXCH_*_RS) versions.
409     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
410       (generate new output).
411    
412    checkpoint61e
413    o gmredi (Visbeck-variable-K):
414      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
415      - change computation of Visbeck-K where Slope > Smax :        
416        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
417        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
418    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
419      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
420    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
421    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
422      does not become too large (to avoid precision problems in implicit-diffusion
423      solver); update ideal_2D_oce output.
424    o pkg ggl90:
425      - in ggl90_cal.F: compute only one set of visc/diff, used to
426        step forward TKE/T/S/momentum
427      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
428        have Prandlt =1)
429    o gmredi (fm07):
430      - add lower limit on Transition layer thickness + lower limit on 1/lambda
431      - allow to set few more params from data.gmredi
432    o pkg ggl90:
433          - add missing sqrt(2) factor in computation of mixing length
434            scale in ggl90_calc.F
435            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
436    
437    checkpoint61d
438    o adjoint modifs
439      - adapt to new field rhoInSitu
440      - allow to revert from StoreDynVars2D, StoreDynVars3D
441        to individual fields
442        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
443    o store 3-D (in-situ) density in commom block (DYNVARS.h)
444     - save 1 rho computation.
445     - no longer modify T & S inland when using down_slope pkg.
446    o gad_som : allow to switch to SOM advection for T & S without corresponding
447      pickup files (using new S/R: MDS_CHECK4FILE).
448    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
449      (for useSingleCpuIO to work in multi-threaded)
450    o pkg/shelfice:
451     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
452       with SHELFICEtopoFile in data.shelfice
453     - move code for reading ice shelf topography and modifying hFacC into separate
454       subroutines of the shelfice package
455     - separate initialisation of "fixed" and "variable" variables
456     - kTopC is not (yet) replaced by kSurfC, although this is possible
457    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
458    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
459      and rename:
460      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
461      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
462    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
463    
464    checkpoint61c
465    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
466      to add mass source/sink of fluid in the interior (3-D generalisation
467      of oceanic real-fresh water flux).
468    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
469    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
470    o new pkg: down_slope
471      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
472      - presently, modify T & S inland (dwnslp_calc_rho.F).
473        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
474      - implementation for ocean in P-coords not tested.
475      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
476    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
477      (to facilitate conversion of oceanic pkg to p-coordinate).
478    o change FIND_RHO to FIND_RHO_2D :
479      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
480    o new pkg: cheapaml
481    
482    checkpoint61b
483    o exch2:
484      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
485      - no longer depend on the order sequence (N,S,E,W).
486      - 3rd exchange no longer needed (tested with 24 tiles).
487      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
488      - exch_UV_A-grid readily available (but not yet tested).
489      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
490      (both are no longer needed) in exch_uv: no effect in forward run; but
491       get truncation error differences with adjoint exch.
492    o exch2:
493     - change index-bounds storage (moved from target to local tile,
494       more intuitive this way) ; rename/remove some variables.
495     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
496    
497    checkpoint61a
498    o exch2/matlab-topology-generator:
499      fix bug in index bounds for N-S internal exchange (hard to tell if this
500      had any effect on the solution).
501    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
502      is exceeded
503    o testreport: modify syntax of awk, so that it works also with
504      awk, and not only with nawk and gawk
505    
506    checkpoint61
507    o autodiff
508      Change default for TAF usage by removing argument '-nonew_arg'
509      This changes TAF subroutine argument list (ordering of active var.)
510      Omission of this flag leads to incompatibility w.r.t. TAMC
511      To restore TAMC-compatibility, need following modifs:
512      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
513      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
514      Tested TAF version is 1.9.22
515      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
516    
517    checkpoint60
518    --->>> This is the last checkpoint for which generating the adjoint
519    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
520    --->>> by default.
521    --->>> Future checkpoints will ommit this flag by default.
522    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
523    o pkg/grdchk: Add gradient check to etan0 perturbations.
524    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
525    o pkg/autodiff: more flexibility in zeroadj.
526      model/src: modifying do_oceanic_phys.F accordingly.
527    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
528    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
529      special setup of gmredi for which the adjoint is stable
530      enough for parameter optimization.
531    o bridging the gap between eddy stress and GM.
532      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
533          along with a change in CPP option (now ALLOW_EDDYPSI).
534      -> when using GM w/ GM_AdvForm:
535          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
536          is applied either in the tracer Eq. or in momentum Eq.
537          depending on data.gmredi (intro. GM_InMomAsStress).
538      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
539      The key modifications are in model/src/taueddy_external_forcing.F
540      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
541    
542    checkpoint59r
543    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
544      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
545      fix option to read coriolis(@ cell-corner) from files with CS-grid.
546    o pkg/mnc: add some attributes to standard 1D-coordinate variables
547    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
548      mass points, when using mnc for output
549      - add runtime parameter (missing_value, missing_value_int) to override
550        default (which is the value of getcon('UNDEF'))
551    o pkg/mnc: prepare mnc for the actual use of missing values with the
552      diagnostics package: small fix in mnc_cw_readwrite.template and more
553      initialisation of never used fields
554      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
555      versions
556    o pkg/thsice/thsice_ini_vars.F added default initial values so that
557      thermodynamics sea ice solver does not blow up when some initial fields
558      are missing.
559    o move from external_forcing_surf.F to ini_forcing.F
560      the p-coord. hack consisting in using pLoad to set phi0surf ;
561      update output of tutorial_global_oce_in_p (affected @ truncation level).
562    o Freshen up a bit hs94.1x64x5, notably:
563      remove rotationPeriod and tRef=5*0. (adjoint only), and add
564      exactConserv=.TRUE.
565    o pkg/generic_advdiff:
566      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
567      applies to files where Temperature & Salinity 2nd Order moments are used.
568    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
569      this uses a dynamically allocated internal state data structure
570      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
571      and requires a fortran 90 compiler
572    
573    checkpoint59q
574    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
575       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
576    o Refresh tutorial_global_oce_biogeo, notably:
577      - change bathymetry (put back seamounts in ACC, use hFacs)
578      - change EOS (POLY3 --> JMD95Z)
579      - use Bryan-Lewis vertical diffusivity
580      - use multidimensional advection
581      - remove old virtual virtual in dic pkg, now done through ptracer pkg
582      - change a couple of parameters in dic pkg
583    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
584    o pkg/obcs: change default to OBCSfixTopo = .true.,
585      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
586      - replace "debugMode" with "debugLevel .GE. debLevB"
587    o implementation of TAF directives for gchem,cfc,dic
588    o remove "exp5" (replaced by tutorial_deep_convection).
589    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
590      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
591      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
592      --> changes results in exp4, seaice_obcs
593    o tutorial_deep_convection :
594      update the set-up and increase resolution and domain size ; start
595      from pseudo initial conditions = output at t=120mn in order to see
596      something happening when running testreport.
597    o pkg/seaice: add os7mp as an advection scheme
598                  add check for advection schemes
599                  add a flag for restoring T and S underneath sea ice
600    o pkg/my82: add netcdf-support and diagnostics
601    o thsice pkg:
602      - Now hsMax limits snow height by turning it into ice following
603        flooding scheme (and now conserving energy)
604      - Slight rewriting of the formula in thsice_calc_thick.F
605      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
606      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
607    
608    checkpoint59p
609    o gchem / dic / cfc :
610      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
611      - add new parameter files: "data.dic" & "data.cfc" ;
612      - various re-arrangement in initialisation & header file ;
613      - fix tutorial_global_oce_biogeo for multi-threaded test.
614    o pkg/dic: test for "pickup_dic" file when restarting ;
615      if no pickup-file, can restart with a re-initialised pH (same as it did
616      before) providing pickupStrictlyMatch is set to False.
617    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
618      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
619    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
620      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
621    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
622     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
623       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
624    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
625       scheme to use for vorticty-term ;
626     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
627       (with default selectVortScheme, return to original discretisation)
628     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
629    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
630    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
631      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
632      also fix diagnostics VISCAHW & VISCA4W.
633    
634    checkpoint59o
635    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
636    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
637      move a few statemens out the main loop into separate loops
638    o pkg/shelfice:
639      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
640        (kg/m^2/s), does not break tests, because in verification/isomip,
641        rhoConstFresh=rhoConst (by accident)
642      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
643      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
644        new file model/src/seawater.F, so that they are available for all pkgs.
645      - convert potential temperature into in-situ temperature. This changes the
646        isomip tests => update tests
647    o add a flag writePickupAtEnd (default=true) to be able to suppress
648      writing a pickup at the last timestep
649    o tools/mpack-1.6 :
650      - disable automake (not working) and autoconf (not needed).
651      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
652        also cleaner with much less compilation warnings.
653    o pkg/profiles:
654      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
655      (for "less than 32 characters name" compiler requirement)
656    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
657      conditions that have a different sampling frequency than S/T/U/V obcs
658    o pkg/diagnostics (stats-diags):
659      - fix global Min/Max in case 1 processor get only empty tiles
660    o genmake2: replace (4 times)
661         make genmake_tc_1.o >> genmake_warnings 2>&1
662      with
663         COMM="$CC $CFLAGS -c genmake_tc_1.c"
664         echo $COMM >> genmake_warnings
665         $COMM >> genmake_warnings 2>&1
666      to make genmake2 always see the value of CC as specified in the optfile.
667    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
668      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
669      - modify verification advect_cs test to test SOM-advection on CS-grid.
670    o pkg/ctrl:
671      - Rewrite of ctrl_map_ini_ecco.F,
672        introducing a generic routine (ctrl_map_ini_gen.F).
673      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
674    
675    checkpoint59n
676    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
677      number in dedicate array "hdiag":
678      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
679        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
680      - many small changes (integer format) for large number of diagnostics
681      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
682        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
683    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
684      usingSphericalGrid, this allows to define the rotated grid coordinates
685      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
686      geographical coordinates according to the inverse of the rotation defined
687      by the Euler angles, so that Coriolis parameter and online-interpolation by
688      exf works with the geographical coordinates on XC/YC/XG/YG.
689      Naturally, this feature does not work with all packages, so some
690      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
691      profiles), because there the coordinates are assumed to be regular
692      spherical grid coordinates.
693    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
694      - introduce isopycnal diffusion coefficient control.
695    o tools/adjoint_options:
696      - additional control vector components.
697    o pkg/mnc: have mnc create marginally meaning full coordinate variables
698      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
699    o pkg/mypackage:
700      - add example of read/write pickup for state-var ;
701      - add entry points to the main code for state-vars diags & write-pickup.
702    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
703      transitions for useExfYearlyFields
704      - add new subroutine that determines the file to read from for
705        use*YearlyFields = .TRUE. and .FALSE.
706      - add a verification experiment to global_with_exf that tests
707        useExfYearlyFields with USE_EXF_INTERPOLATION defined
708    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
709      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
710      subroutines (which could be generated from a template, because they are
711      almost identical), for now they are included in obcs_prescribe_read.F for
712      simplicity
713    o pkg/exf:
714      - add a little more diagnostic to exf_interp_read (in analogy to
715        mds_read_field, can be turned off with debugLevel < debugLevA=1)
716      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
717        ugly but fast by unrolling short inner loops, inserting a unroll=8
718        directive in routine lagran, and splitting a loop and making do while the
719        outermost loop (the latter requires the intoduction of index arrays)
720    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
721    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
722      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
723    o verification/seaice_obcs: updated for restart test and latest options
724    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
725      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
726      for now this is only available for the C-grid code and also within
727      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
728    
729    checkpoint59m
730    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
731      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
732    o gad_som : fix flux output (& diagnostics) to have same units as other  
733      advection scheme fluxes (was previously multiplied by deltaT).  
734    o added verification/seaice_obcs both to test seaice open boundaries
735      and to provide an example matlab scrpt for generating them
736    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
737    o pkg/salt_plume: clean up salt_plume_frac.F to
738      remove redundancy in PlumeMethod 1 and 4
739    o pkg/kpp: added saltplume diagnostics
740    o pkg/obcs and pkg/seaice:
741      - do not set uice and vice to zero when OB*icefile are unspecified
742      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
743      - moved seaice tracer obcs after call to seaice_growth
744    o pkg/salt_plume: added various options for salt plume depth
745      criterion and for vertical distribution of the salt
746    
747    checkpoint59l
748    o pkg/ptracers: new version of ptracers pickup:
749      read meta file and write only fields which are needed to restart.
750      ( same logic as main pickup file ; also using pickupStrictlyMatch )
751    o pkg/seaice:
752      - add timescale for melting due to warm mixed layer as a means of
753        setting SEAICE_availHeatFrac more conveniently
754      - add a CPP-flag/runtime parameter check for flooding algorithm
755      - reformulated availHeat in seaice_growth.F to be independent of AREA
756    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
757      unit changes
758    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
759    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
760      SX vector computer.
761    o pkg/seaice:
762      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
763        seaice forcing fields can now be read only through pkg/exf
764      - removed some unused halos
765    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
766    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
767      or U/VICE from U/VWIND before computing U/VSTRESS
768    
769    checkpoint59k
770    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
771      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
772    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
773      all experiments pass when compile with un-initialised var. checking option.
774    o added pkg/salt_plume
775    o script to test restart (for now, in MITgcm_contrib/jmc_script)
776    o pkg/seaice: new read/write pickup version.
777      read meta file and write only fields which are needed to restart.
778      ( same logic as main pickup file ; also using pickupStrictlyMatch )
779    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
780    o lab_sea.hb87: modify the domain & update output.hb87.txt :
781      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
782      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
783      process. Fixed here by closing the domain at the Northern boundary.
784    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
785    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
786      a set of consecutive levels in/from a 3-D array.
787    o pkg/ptracers:
788      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
789      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
790    
791    checkpoint59j
792    o in pkgs: dic, obcs, offline, rbcs:
793      standard way to compute coeff. for time interpolation between 2 time reccords
794      which retains full precision (& make results less dependent on compiler).
795      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
796    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
797      packages instead of reading ice cover and wind speed separately
798    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
799     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
800      to allow to compile customized code before the update)
801    o cleaning-up:
802      - fix CPP instruction syntax in pkg/obcs
803      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
804        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
805      - fix some threads issue in IO parts.
806    o pkg/dic:
807      - add tons of "_d 0" (--> much better testreports !)
808       and then update outputs of tutorial_global_oce_biogeo
809    o pkg/mom_fluxform:
810      add a special version of momentum advection intended to conserve momentum
811      next to a bathymetry step or a coastline edge. (default = off = #undef)
812    o new read/write pickup version:
813      - for now, only implemented for main (mdsio) pickup file.
814      - write out only what is needed to restart; merge pickup_nh , pickup_ph
815        and main pickup together.
816      - read meta file; read only what is needed to restart; stop if a field
817        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
818        if it make sense (even if the restart is not perfect).
819      - if no meta file, assume that pickup to read corresponds exactly to
820        a pickup that would currently be written.
821      - read pickup written in the old format (until checkpoint59i) if it
822        recognizes an old meta file (no field-list).
823      - add a meta file in exp. which starts from a pickup: 2 cases:
824        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
825         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
826        b) a meta file describing the content of the associated pickup file
827         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
828    o pkg/mdsio & pkg/rw:
829      - new routine to read a meta file ; new set of routine to read
830        Multiple-fields file (with meta file).
831    o added open boundary conditions capability for seaice
832        HSNOW, HSALT, UICE, and VICE
833    
834    checkpoint59i
835    o adjoint:
836      * fix multiDimAdvection adjoint
837        (partial recomputation problem by TAF for fVerT(:,:,kDown)
838        and comlev1 size definition (maxpass vs. max. number of tracers)
839      * verification/global_ocean.90x45x15 adjoint now tests
840        NLFS and multiDimAdvection using DST3 (=30)
841      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
842    o pkg/kpp: add "_d 0" to real constant (if missing);
843      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
844      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
845    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
846      for internal parameters related to restart process (formerly from PARAMS.h)
847      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
848    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
849      as argument. (only atm2d & obcs write_pickup have not yet been updated)
850    o pkg/monitor:
851      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
852      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
853      - account for deep Atmosphere factor and density factor (anelastic)
854    o added open boundary conditions capability for seaice HEFF and AREA
855    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
856      thermodynamics
857      - requires a little reorganization, which affects the testreport results
858        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
859        so that now the conservative form is tested
860      - add a few comments
861    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
862    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
863    o add new diagnostics to seaice: advective, diffusive fluxes (only for
864      multidim-advection, for scheme 2 they are not filled) and transports,
865      thermodynamic growth rates
866    o change units of EmPmR (inside the code, + within coupling interface)
867      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
868      Affects results @ truncation level (cg2d match) and update output of
869       experiments: lab_sea(6), global_ocean.90x40x15(10),
870      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
871      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
872      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
873      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
874    
875    checkpoint59h
876    o pkg/exf:
877      - improve vectorization by moving if-statement out of loops in
878        exf_mapfields, exf_radiation
879      - exf_bulkformulae.F: introduce 2D fields and vectorize code
880    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
881    o testreport:
882      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
883        monitor & update offline_exf_seaice exp. output.
884      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
885    o pkg/seaice:
886      - bug fix in the evp solver: boundary conditions were affected be
887        masking of zMax/zMin (changes results)
888      - minor bug fix in boundary conditions in seaice_calc_strainrates
889        (changes results for no_slip)
890      - seaice_lsr.F: make interpolation of eta dependent on boundaries
891      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
892      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
893        stress formulation and no-slip boundary conditions
894    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
895      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
896    o pkg/seaice: a first HSALT time stepping equation has been checked in
897    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
898      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
899      without requiring DO-IF statements
900    o pkg/thsice:
901      use continuous power-law function for partition of energy between lateral
902      melting/freezing and thinning/thickening ; old code using step function
903      still available with #undef THSICE_FRACEN_POWERLAW
904      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
905    o testreport: change AD testing : check against results/output_adm.txt
906      using same scripts as for forward test.
907    
908    checkpoint59g
909    o adjoint testing: in preparation for changing testreport:
910      - output format: cost and grad written on separated lines
911      - ad output results in directory "results" (instead of "results_ad")
912    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
913    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
914    o pkg/ecco: allow user defined cost function contributions
915    o testreport:
916      Allow to choose (per experiment) the list of tested output variables
917       and the main variable (used to issue a pass/FAIL ) ;
918      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
919      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
920      Also modify printing of summary:
921       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
922       b) echo the list of tested variables in the individual summary.txt of
923          each experiment.
924    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
925      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
926      (but still depend on the tile decompostion of the domain).
927    o pkg/seaice: change a discretization detail to make the B-grid code
928      "more symmetric". This change is likely to remove all "ridges/leads" that
929      where quasi-aligned with the grid in B-grid solutions. It may also be
930      the solution to the stress coupling issues with the B-grid.
931    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
932      remove .cvsignore from input dir. (since testreport no longer run here).
933    o pkg/thsice:
934     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
935     - fix reshaping of sea-ice just after advection:
936       melt all the ice only if ice-volume is too small.
937     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
938       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
939     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
940    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
941      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
942    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
943      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
944      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
945      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
946      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
947      -> update output.txt
948    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
949     this affects truncation error: -> update output.txt of exp:
950      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
951      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
952    
953    checkpoint59f
954    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
955    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
956      a bounded range (in forward mode)
957    o pkg/ecco, ctrl, autodiff and mom_common:
958     internal parameter controls, completements of implementations
959    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
960    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
961      (not seem any difference in testing results).
962    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
963       at face corners.
964    o pkg/generic_advdiff:
965     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
966      loop range indices for computing vertical advection tendency
967      and do the calculation in the interior only (no overlap) ;
968      for now, only implemented for SOM advection (to save CPU time).
969     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
970    o exch2 adjoint
971      First set of changes:
972      - add exch2 hand-written adjoint templates
973      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
974        This will require cleanup in pkg/autodiff/*.F
975        (changed routines currently kept separate in verif. code/)
976      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
977        that used to hide exch2 or cubed-sphere specific code
978        (commented via 'cph-exch2')
979    o pkg/seaice
980      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
981    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
982       output of global_ocean.cs32x15.thsice .
983    
984    checkpoint59e
985    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
986      for B-grid vector (not yet tested) and C-grid vector (<- only used
987      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
988    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
989      (#ifdef ALLOW_SALT_PLUME)
990    o gather_2d/scatter_2d: removed halo regions
991    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
992      scheme and the corresponding test case (under front_relax dir). For now,
993      only available with Skew-flux form and not yet tested in realistic set-up.
994      adjoint: store directives updated, but gradient checks deteriorated,
995      so maybe GM/Redi adjoint is now broken.
996    o seaice adjoint
997      * add AREA, HEFF, HSNOW as control variable
998        (should not change lab_sea results)
999      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
1000    o pkg/seaice:
1001      * added computation of saltFlux in seaice_growth;
1002        For time being, sea ice salinity is assumed constant
1003        contribution of snow flooding to freshening of sea ice is neglected.
1004        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
1005        defaults to 0.0 in order to maintain backward compatibility.
1006        Typical values for SEAICE_salinity are 4 to 10 g/kg.
1007      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
1008      * added SEAICE_availHeatFrac, which specifies fraction of surface level
1009        heat content used to melt or grow ice
1010      * commented out cap of HICE: it helps keep ice thinner
1011      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
1012      * applied OBCS T/S mask to HEFFM sea ice mask
1013    
1014    checkpoint59d
1015    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1016     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1017     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1018    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1019     and change default value of parameter "GM_Small_Number";
1020     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1021       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1022       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1023    o pkg/ecco: cost function when applying pkg/smooth to controls
1024    o pkg/ctrl: add forcingPrecond run time parameter
1025    o pkg/seaice:
1026     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1027     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1028       changes verification/lab_sea
1029     - rearrange implicit part of u-equation in LSR solver to make it easier to
1030       read, understand, and debug. This causes changes at the truncation level.
1031     - fix (serious) bug in the boundary conditions (sign error in the implicit
1032       part) of the LSR solver. Changes all LSR results.
1033     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1034       is initilized with small values - does not change lab_sea results.
1035     - added HsnowFile initialization capability
1036    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1037     initialization of pkg/smooth and application to control vector
1038    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1039    o dependencies: pkg/profiles requires pkg/cal
1040    o pkg/profiles:
1041     - added option ALLOW_PROFILES_GENERICGRID
1042         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1043         that interpolation information (grid points and coefficients) is provided
1044         within the netcdf input files.
1045         -> sample matlab scripts can be found in MITgcm_contrib/gael
1046         that allow you to prepare netcdf input files.
1047     - also modified: cleaner include statements, cleaner error print statements,
1048       cleaner stops when error, and more tests of the netcdf input files consistency.
1049    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1050    o pkg/seaice:
1051     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1052       requires a new routine: seaice_diagnostics_fill.F
1053     - make sure that seaice does not move if not forced (pressure replacement
1054       method, Hibler and Ip, 1995), changes results
1055     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1056     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1057       It is turned off by default (=-1.), because it changes the results.
1058     - make it possible to read AREA from a file, too.
1059    
1060    checkpoint59c
1061    o add S/R and diagnostics for oceanic mixed-layer depth
1062    o move GMRedi call after all vertical mixing schemes (including KPP)
1063    o pkg/thsice:
1064     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1065      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1066    o pkg/obcs:
1067     - bug fix for balance code
1068    o pkg/seaice:
1069      - allow values of SEAICE_elasticParm > 1
1070      - add new parameter SEAICE_evpTauRelax as an alternative
1071        to SEAICE_elasticParm
1072      - make lsr boundary conditions free slip (by default), changes result
1073      - add code for no slip boundary conditions for lsr
1074      - set minimum of zeta to zero (and not 4e8) (changes results)
1075      - add a cap on AREA after advecting AREA if seaice_growth is not called
1076    o change calculation of Visbeck K:
1077      - no longer depend on tapering scheme; instead, compute slope (limited
1078        by GM_maxSlope). this is equivalent to what was comuted before with
1079        clipping or linear tappering.
1080      - fix vertical averaging (wrong by 1/2 level)
1081      - leave the old version (but will not be maintained) within
1082        #ifdef OLD_VISBECK_CALC / #endif
1083      - update output of exp. ideal_2D_oce
1084    o change error catch in calc_r_star to improve vectorization
1085    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1086      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1087    o adjoint:
1088      Re-organized adjoint checkpointing according to Matt Mazloff
1089      (but with modifs/completions/cleanups)
1090      Storing is now bundled into large arrays to optimized I/O
1091      (and second step in cleanup of the_main_loop)
1092    
1093    checkpoint59b
1094    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1095      - export/import (between ocean & coupler) fields needed for ocean DIC.
1096    o pkg/seaice:
1097      - get rid of three more exchanges seaice_calc_viscosities (required
1098        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1099      - bug fix in seaice_ocean_stress (update of lab_sea required)
1100      - reduce loop boundaries to necessary minimum also in seaice_evp
1101      - go back to the old way of computing deltaC/Z as the adjoint likes that
1102        better
1103    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1104      passive tracer to an Age Tracer) + update output.txt
1105    o pkg/exf:
1106      - implement A-grid / C-grid selection for wind-stress input files.
1107      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1108      for now, in exf_bulk_largeyeager04.F only :
1109      - change implementation for case where windspeed + 2. components wind-stress
1110        are read-in. AND use rhoConstFresh to convert evap.
1111    o pkg/seaice:
1112      - use correct EXCH_UV for wind-forcing (on A-grid).
1113      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1114        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1115    o pkg/exf:
1116      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1117      EXF_INTERPOLATION:
1118      - merge global_with_exf/code version of exf_interp_read.F
1119        to the main code ;
1120      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1121        reading the file ; Important: This options needs to be defined to recover
1122        previous code.
1123        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1124      - no longer loose real*8 precision along the way when using exf_iprec=64.
1125    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1126      - change discretisation of evp-solver in order to avoid another exchange
1127        (changes lab_sea) and clean up a little
1128      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1129        help the adjoint (this also changes the results slightly)
1130      - add a few "_d 0" where they had been missing in seaice_evp.F
1131      - cleaning up: remove unused seaice_calc_rhs.F
1132    o pkg/exf: some cleaning-up:
1133      - change various "constants" into runtime parameters
1134      - cleaned-up Large&Yeager04 routine which should eventually
1135        replace exf_bulkformulae.F (changed names of S/R and CPP)
1136        and merged various ALLOW_ATM_WIND options
1137     only used with thsice pkg (in thsice_get_exf.F):
1138      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1139        which are used when useStabilityFct_overIce=TRUE (= the default)
1140      - change default values of ice & snow emissivity and scale downward LW
1141        by ice & snow emissivity.
1142    o pkg/thsice:
1143     fix few little problems, in thsice_calc_thickn.F:
1144      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1145      - melt only laterally if hIce < hThinIce (as the comments say)
1146      and in thsice_extend.F:
1147      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1148      - start to form ice as soon as the minimum ice-volume is reachable.
1149     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1150      and cpl_aim+ocn
1151    o pkg/kpp
1152     - move computation of surface related input fields to KPP into a new
1153       subroutine kpp_forcing_surf.F
1154     - remove wrong (within bi,bj loops) EXCH calls.
1155     - little cleaning (add argument myThid in last position, cvs header ...)
1156     - for now, fix conservation problem by exchanging KPPviscAz (may not
1157       be the best fix)
1158    o pkg/seaice
1159     - check for inconsistent evp parameter/cpp-flag combination
1160     - remove leftover errIO flat for obsolete name list error handling
1161    o OpenAD
1162     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1163    
1164    checkpoint59a
1165    o pkg/seaice: some parameter clarifications and a little bit of clean up
1166    o pkg/thsice: rename run-time parameters:
1167       himin       -> hIceMin
1168       himin0      -> hThinIce
1169       hihig       -> hThickIce
1170       i0          -> i0swFrac
1171       transCoef   -> bMeltCoef
1172       frac_energy -> fracMelting
1173      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1174       with default values (for now) that do not change the results.
1175      remove old version of thsice vars advection in pkg/seaice.
1176    o in FFIELDS.h:
1177      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1178      - make pLoad & sIceLoad always available (but still only used if
1179         ATMOSPHERIC_LOADING is #define).
1180    o pkg/kpp: replaced _KPP_RL with _RL
1181    o bug fixes for vertical diffusivity computations when both KPP and
1182        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1183        are no longer updating the vertical diffusivity array
1184        (passed as argument) but are (re-) setting those arrays.
1185    o pkg/seaice: fix bug in evp solver, while doing that
1186      - change (improve?) discretization of stress computations for both
1187        cgrid-lsr and evp solver
1188      - add a new routine to compute strain rates
1189      - the above changes lab_sea results
1190      - add no slip conditions for evp solver (off by default), lsr-version
1191        may follow
1192      - fix exchange for shear at Z-points (does not change lab_sea)
1193      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1194        (to force the user to pick a time step since there is not "safe" way
1195        of choosing it)
1196      - add principal stress diagnostics
1197      - rearrange fields for evp a little to avoid having to call a: too many
1198        exchanges and b: exchanges for stress trensor components which we do
1199        not have.
1200      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1201        of evp, complete rewrite for lsr case (latter is does not yet work
1202        in all cases)
1203    o pkg/kpp: add code to have mixing in shelf ice caverns
1204      - add myThid to all kpp routines (long overdue)
1205    
1206    checkpoint59
1207    o pkg/exf:
1208      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1209        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1210      - move exf header files from lower_case.h to UPPER_CASE.h ;
1211        add missing cvs Header & Name
1212      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1213      - add namelist param. selectStressGridPosition, exf_monFreq
1214      - retire many _CLIM routines, and remove data.exf_clim
1215        + params moved to data.exf
1216        + climsst, climsss now handled by exf_set_gen, i.e.
1217          climss?period=0 refers to constant field,
1218          climss?period=-12 to monthly forcing
1219      - split up namelists in data.exf
1220    o pkg/seaice:
1221      - remove seaice_exch and seaice_exch_uv
1222      - remove superfluous exchange of theta
1223      - add myThid to seaice_budget_ocean/ice
1224      - add new interface for atmospheric wind forcing (C-grid only)
1225        + new routine
1226        + two new field (taux, tauy for stress over ice)
1227        + removed one global field (DAIRN) for C-grid case only
1228    o pkg/thsise
1229      - 2nd set of modifs for thsice adjoint in conjunction with exf
1230    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1231    
1232    checkpoint58y_post
1233    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1234      vertical diffusivity, similar to that in MOM4; turned on using
1235      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1236      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1237    o Added capability for 3D specification of background vertical diffusion
1238      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1239      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1240      "data" file that contains the 3D vertical diffusivity coefficients.
1241    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1242      - add code within pkg thsice to advect & diffuse sea-ice fields
1243      similar to (and will replace) what has been added in  seaice_advdiff.F,
1244      but: - conserving Mass, Heat & Salt.
1245           - better when using non-linear advection scheme (not yet fully tested)
1246           - can also be used in atmospheric set-up (for now, only the diffusion).
1247    
1248    checkpoint58x_post
1249    o IO option for global-file compact format:
1250      - add options when generating topology (utils/exch2/matlab-topology-generator)
1251      - add I/O capability (pkg/mdsio).
1252      - adapt utils/matlab/rdmds.m to read this format.
1253      for now long-line format not yet supported by pkg/mdsio (& exch2).
1254    o shelfice: add a few diagnostics
1255    
1256    checkpoint58w_post
1257    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1258      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1259      (and replace horiVertRatio in NH code).
1260      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1261                         and tutorial_plume_on_slope (sensitive to truncation)
1262    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1263      directly to drive seaice model (C-grid only)
1264    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1265     - reintroduce computation of wind from stress,
1266     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1267       mass points to avoid tau = 0
1268     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1269    o rdmnc.m: make it work with "global" files created with gluemnc
1270    o rdmnc.m : some improvements in dealing with singleton dimension
1271      (tested on all testreport mnc output files).
1272    o genmake2: disable pkg/profiles if netcdf test fails.
1273    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1274    o move call to cal_readparms up to make calendar parameters/variable available
1275      to all packages
1276    
1277    checkpoint58v_post
1278    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1279      useDynP_inEos_Zc tested.
1280    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1281    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1282      and portions thereof.  See read_cs.txt for description and examples.
1283    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1284      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1285      following the great-circle arc between those 2 points.
1286    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1287      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1288    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1289     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1290     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1291     - still needs work (not working with some options ; efficiency to improve)
1292       and serious testing.
1293     - use this scheme for temperature & salinity in 2 advection test exp.:
1294       advect_xy & advect_xz, respectively.
1295    
1296    checkpoint58u_post
1297    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1298    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1299    o testreport: add option "-skipdir" to skip some test.
1300    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1301      momentum calculation.
1302    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1303    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1304      remove checkpoint.F and the_correction_step.F (no longer used);
1305      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1306    o add option (linFSConserveTr) to correct for tracer source/sink due to
1307      Linear Free surface
1308    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1309    o pkg/thsice: fix reading mnc-pickups
1310    
1311    checkpoint58t_post
1312    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1313    o pkg/mdsio:
1314     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1315       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1316       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1317     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1318     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1319       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1320     - new S/R (to replace MDSWRITEMETA), which allows to write more
1321       informations (variable names, time ...) to meta files.
1322     - modify rdmds.m to give back the meta file content.
1323    o pkg/diagnostics: change vertical interpolation to be safer, and more
1324       flexible (define p-levels to interpolate to in data.diagnostics);
1325      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1326       diagnostic pointer.
1327    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1328    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1329    o fix multi-category seaice:
1330     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1331       SEAICE_MULTICATEGORY
1332     - fix short wave heat flux
1333    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1334       and allow to use EVP solver. Change forward lab_sea: test both EVP
1335       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1336    o Initial check-in of lab_sea adjoint
1337      (very similar to natl_box_adjoint/code_seaice)
1338      * used C-grid and EVP solver
1339      * used KPP, GM/Redi
1340      * uses inAdExact=.TRUE.
1341      * gradient checks fail for both ADM and TLM
1342        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1343        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1344        issue is related to forward mismatch between g77 an ifort
1345    o pkg/seaice: overhaul of thermodynamics
1346     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1347     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1348     - move a few global fields out of SEAICE.h into seaice_growth.F and
1349       make them 2D (FICE/QNETO/ ...)
1350     - remove FO (it is the same as QNETO)
1351     - introduce a few local fields to avoid modifying external fields such
1352       as atemp, etc.
1353    
1354    checkpoint58s_post
1355    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1356      changed exf_set_gen.F so that
1357        genperiod=0 means input file is one time-constant field and
1358        genperiod=-12 means input file contains 12 monthly means
1359    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1360      this affects truncation error ; generate new output file for exp. which
1361      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1362        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1363        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1364        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1365        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1366        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1367    o start implementation of deep-atmosphere and anelastic formulation
1368    o verification: remove 2nd copy of input files and use script "prepare_run"
1369      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1370    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1371    o profiles: fix for multithreaded case
1372    
1373    o diagnostics: rename few diags:
1374      s/'PRESSURE'/'RCENTER '/g
1375      s/'TICE    '/'oceFreez'/g
1376      s/'TAUX    '/'oceTAUX '/g
1377      s/'TAUY    '/'oceTAUY '/g
1378      s/'SWFLUX  '/'oceQsw  '/g
1379      s/DIFx/DFxE/g
1380      s/DIFy/DFyE/g
1381      and add few ocean-forcing diagnostics:
1382      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1383    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1384      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1385      as actual snow thickness.  It now refers everywhere to effective snow
1386      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1387    
1388    checkpoint58r_post
1389    o modifications to pkg/seaice/growth.F, which change results of
1390      lab_sea experiment: fixes pertain to melting snow over open water, to
1391      masking EVAP under sea ice, and to using the correct AREA variable for
1392      computations of EVAP, PRECIP, HSNOW, and GHEFF
1393    o add ability to read bathy, salt, and theta using MNC (off by def)
1394    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1395      both are turned off by default and do no change any results
1396    o seaice advection with pkg/thsice: a step toward the use of non-linear
1397      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1398    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1399      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1400      in natl_box (affects results @ truncation level: update output.txt)
1401    o multi-threading and IO:
1402      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1403      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1404        (needed to work with SingleCpuIO): tested in all verif. exp.
1405    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1406      affects the results (but none of the verification test uses this scheme).
1407    o Adding some pkg/diagnostics capability to pkg/seaice
1408      (will certainly be subject to changes)
1409    o ctrl: adding new control variables:
1410      lwflux, lwdown, evap, snowprecip, apressure, runoff
1411    
1412    checkpoint58q_post
1413    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1414      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1415      high_res_cube configuration by 4% on Columbia.
1416    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1417      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1418      dynamical allocation (seems to work in multi-threaded).
1419    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1420      single CPU io) so that TAF does not have to see EESUPPORT.h
1421    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1422    
1423    checkpoint58p_post
1424    o obcs: stop if obcs is used with useCDscheme = .true.
1425    o shelfice:
1426     - fix a sign error so that no slip at shelfice interface works
1427     - remove stop for combination non-hydrostatic code and shelfice. That does
1428       not mean, that the results are correct, but at least they are numerically
1429       stable
1430    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1431    o added adjoint exch routined for all exch*3d* routines
1432      and updated flow directives
1433    
1434    checkpoint58o_post
1435    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1436      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1437    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1438      and clean-up reading/writing of pickup files.
1439    o fix local version of read/write pickup (NH part) in rotating_tank/code
1440    o simplify EXCH interface:
1441     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1442     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1443    o added the regrid package
1444    o shelfice:
1445     - add a simple boundary layer scheme to reduce noise
1446     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1447    
1448    checkpoint58n_post
1449    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1450       local variable (not in common block).
1451    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1452      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1453      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1454        to work with SingleCpuIO.
1455    o add "_d 0" to real constant of pkg/cfc subroutines ;
1456       update exp. cfc_exemple & tutorial_cfc_offline output files.
1457    o multi-threading and IO:
1458      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1459        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1460      - barrier before and after reading.
1461      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1462      - avoid using MDS_WRITELOCAL for LAND pkg output.
1463      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1464        common-block variables ; Allows multi-threading with master-thread IO.
1465    o change default MAX_NO_THREADS from 32 to 4 ;
1466      and stop cleanly when MAX_NO_THREADS is too small.
1467    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1468    
1469    checkpoint58m_post
1470    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1471       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1472    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1473       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1474       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1475    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1476        add MITgcm_tutorials (= code + all the tutorials)
1477    o ecco, option to compute cost for total ssh (mean+anom)
1478    o consistent with addition of ptracer and ssh in pkg/profiles
1479    o profiles: adding ptracer and ssh
1480    o testreport: change multi-test output-file name
1481      (from output.txt.{name} to output.{name}.txt)
1482    o profiles: now ok for mutli-tiles case
1483    o seaice: add 4 parameters for different advection schemes for area,
1484      (effective) seaice thickness, enthalphy, and snow height. Their default
1485      is the standard parameter SEAICEadvScheme
1486    o calc_gw:
1487     - add cosFacU in zonal viscous flux (harmonic.visc.).
1488     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1489       of tutorial_plume_on_slope.
1490    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1491    o calc_gw: true flux-form, account for horizontal grid spacing.
1492      update rotating_tank results, but not plume_on_slope (affected at
1493      truncation level, 11 digits).
1494    
1495    checkpoint58l_post
1496    o calc_gw:
1497     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1498     - remove side-drag for now (need to fix it); update plume_on_slope results.
1499     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1500    o commit code to make SST/SSS weights spatially variable
1501      (based on either variable in-situ or variable initial T/S weights)
1502    o pkg/ecco:
1503      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1504        now based on horizontally varying weights wthetaLev, wsaltLev
1505      * cost_averagesflags now returns year indices in addition to day, month
1506      * sflux balance is performed on annual basis
1507        (sflxumm, sfluxmm2, bal_sfluxmm)
1508      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1509        including separate counting and multipliers
1510    o pkg/rbcs
1511      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1512    
1513    checkpoint58k_post
1514    o testreport:
1515     - always build in dir. "build" (if not there, mkdir build instead of building
1516       & running in input)
1517     - run in dir run (if it exists), in build otherwise.
1518     - call prepare_run (if input/prepare_run exists)
1519     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1520    o pkg/exf modifications to interpolation and rotation routines for more
1521       reasonable treatment of North Pole singularity: for tracers North Pole
1522       value is set to northernmost zonal-mean value, for zonal velocity it is
1523       set to zero, and for meridional velocity it is set to northernmost value.
1524    o pkg/exf/exf_check_range.F
1525     - add tile index to diagnostics and move stop statement to the very
1526       end of the routine.
1527    o pkg/diagnostics: (diagnostics_main_init.F)
1528      define title of isomorphic variables according to the current config.
1529    o pkg/thsice with pkg/seaice dynamics:
1530    - fix domain of computation (interior only, required for exf) and do exchanges
1531    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1532    o towards a standard way of dealing with multi-threading in MONITOR
1533      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1534    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1535       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1536    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1537    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1538    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1539       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1540    o tracer advection:
1541     - clean-up and simplify calc_common_factors.F
1542     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1543       advection subroutine (but still not used within DST advection S/R)
1544    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1545    
1546    checkpoint58j_post
1547    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1548      from file (collects calls previously in FORWARD_STEP)
1549    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1550    o adjoint store dir. adjusted accordingly
1551    o genmake2
1552      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1553    
1554    checkpoint58i_post
1555    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1556      on wind stress (SEAICEstressFactor defaults to 1.)
1557    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1558      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1559    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1560      on CS-grid: no longer loosing mass.
1561    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1562    o pkg/ggl90: fix sloppy output and fix a bug
1563    o pkg/seaice: added SEAICEuseEVPpickup parameter
1564      - Set to false in order to start EVP solver with
1565        non-EVP pickup files when using SEAICEuseEVP
1566      - fix sign error in diffusion in seaice_calc_rhs
1567    
1568    checkpoint58h_post
1569    * Modifications for bottom topography control
1570      o replace hFacC by _hFacC at various places
1571      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1572      o add non-self-adjoint cg2d_nsa
1573      o update autodiff support routines
1574      o re-initialise hfac after ctrl_depth_ini
1575      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1576    * Adding verification for 5x5 box (4-layer) bottom topography control
1577    
1578    checkpoint58g_post
1579    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1580       used for mean seasonal cycle, mean diurnal cycle); add an example
1581       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1582    o pkg/ggl90:
1583      - add parameter (minimum surface kinetic energy)
1584      - fix bug (avoiding division by zero)
1585    o couple pkg/thsice to pkg/seaice:
1586      - modify advection in seaice to accomodate new scalar fields to be advected
1587      - only muliDimAdection scheme work with seaice/thsice
1588      - mapping of thsice-variables to seaice-variables, back and forth
1589      - does not break the verification experiments, but does not give the
1590        desired results either
1591    o pkg/seaice
1592      - make (default) second order advection a bit less confusing?
1593    
1594    checkpoint58f_post
1595    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1596      to pkg/seaice):
1597      - new routines thsice_map_exf and thsice_get_exf provide the interface
1598      - add an additional formal parameter to thsice_solve4temp
1599    o pkg/exf:
1600      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1601      - correct Stefan-Boltzmann constant
1602      - new parameter for longwave surface emittance
1603      - separate some stuff from exf_bulkformulae into new routines  
1604        exf_radiation, exf_wind
1605      - add new parameters and constants: longwave emissivity for ocean, ice
1606        and snow, evaporation parameters over ice
1607      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1608        either wind from stress or stress from wind
1609    o pkg/thSIce:
1610    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1611    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1612       and THSICE_CALC_THICKN
1613    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1614    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1615      to make debugging easier.
1616    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1617    o pkg/bulk_force:
1618      - clean-up comments and parameters ;
1619      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1620    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1621      generate new output for test-experiment: aim.5l_cs.thSI
1622    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1623      testreport accordingly
1624    
1625    checkpoint58e_post
1626    o SEAICE_CGRID adjoint done
1627    o R_STAR adjoint implemented.
1628      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1629      * need to sort out init. of h0facc, etc.
1630    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1631      to be able to use it in pure forward.
1632    
1633    checkpoint58d_post
1634    o upgrade simple test-experiment to tutorial example:
1635     step.1: duplicate the experiment and (step.2) will remove the old copy.
1636      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1637      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1638      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1639      tutorial_global_oce_biogeo    <- copy of dic_example
1640      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1641      tutorial_plume_on_slope       <- copy of plume_on_slope
1642      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1643      tutorial_global_oce_optim     <- empty for now (David ?)
1644      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1645     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1646    o correct a sign problem in cost_scat.F
1647    o obcs and ptracers: fix boundary conditions for advections schemes
1648      with larger stencil
1649    o thsice adjoint: start
1650    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1651      completeness
1652    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1653      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1654    o ptracers adjoint:
1655      * avoid extensive recomputatations
1656      * fix missing re-init. of gptr (missed by TAF)
1657    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1658      me to turn off the excessive output to STDOUT that this package produces
1659    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1660      and add those terms in Vector-Invariant formulation.
1661    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1662      if the control period (xx_hfluxperiod etc) is 0
1663    o in profiles pkg, clean routines and fix details
1664    o in ecco pkg, reading ssh data:
1665      fix problem in case the model does not start at iter0=0
1666    o fix mnc-pickup/restart for ptracers
1667    o new package prifiles:
1668      code to compute profile-based cost by Gael Forget
1669      (modifs in ecco, ctrl, autodiff)
1670    o Benign bug fix in initialization (spotted by M. Mazloff) of
1671      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1672    
1673    checkpoint58c_post
1674    o adjoint: finish NLFS adjoint and provide reference output in
1675      verification/global_ocean.90x40x15/results_ad_nlfs
1676    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1677      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1678      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1679      with SEAICE_CGRID defined.
1680    o move calendarDumps from "data" to "data.cal" and clean-up the code
1681      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1682    o add useEXF & useCAL flags (for now, set in hard-coded way)
1683    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1684      (were missing in NH mode, and wrong in quasihydrostatic mode).
1685      waiting for Chris updated version of calc_gw to add those CALLs.
1686    o fix bug in quasihydrostatic S/R ;
1687      add a test for this option: global_ocean.90x40x15.qshyd
1688    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1689      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1690    o add on/off flag useOffLine for package OFFLINE
1691    o seaice:
1692      - modify advection so that it works also on the C-grid
1693      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1694        problem in multi-tile runs with C-grid
1695      - add flags for clipping ice velocities and/or masking solver forcing
1696      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1697        C-grid solver
1698      - added a few comments to seaice_diffusion.F
1699      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1700        are now exclusive)
1701      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1702        required re-ordering the code a little:
1703       + make DAIRN global variable (defined in SEAICE)
1704       + move computation of the viscosities eta and zeta into a new separate
1705         routine (because I need to recompute them in seaice_ocean_stress.F)
1706    
1707    checkpoint58b_post
1708    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1709      update output.txt of exp. aim.5l_cs.thSI
1710    o various mnc cleanups and improvements:
1711      + shrink lookup tables by factor of ~4
1712      + better error reporting when running out of lookup space
1713      + able to handle longer path/file names (up to 500 chars)
1714    o adjoint:
1715      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1716      - TBD: "hidden" mom_vecinv recomp. in dynamics
1717    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1718     (allow to differentiate between forcing components using new integer flags:
1719      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1720     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1721    o ecco
1722      - enable trend removal from SSH anomaly obs.
1723    o adjoint
1724      - a fix for PmEpR when #undef EXACT_CONSERV
1725      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1726      - try to fix "hidden" recomp. in forward_step for NLFS
1727        (NLFS seems broken sometimes after I checked it in)
1728    o seaice:
1729     - add c-grid version of the dynamic solver:
1730       + three new routines that are the c-grid substitute lsr, dynsolver
1731         and ostres
1732       + put a few fields that were local to dynsolver into global common
1733         blocks, so that I can move the computation of stresses etc into
1734         seaice_lsr (saves coding but may break the adjoint).
1735     - replace more hardwired parameters by runtime parameters
1736     - add ice masks that mask the rhs of the implicit solvers where there
1737       is no ice (commented out in seaice_dynsolver, because i am not sure
1738       if this works properly), eventually this should replace the clipping
1739       of ice velocities in seaice_dynsolver to +/-40cm/s.
1740    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1741      include it only where its needed
1742    o move balancing of fluxes before the call of external_forcing_surf
1743    o seaice:
1744      - correct units of turning angles (now they are really in degrees)
1745      - move computation of GWATX/Y out of main routine into dynsolver
1746      - initialize GWATX/Y in seaice_init
1747    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1748      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1749    o seaice: add runtime flags for turning angles (default to zero)
1750    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1751      and trend from exf forcing and ctrl control adjustments
1752    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1753      (since checkpoint57x_post)
1754    o change the default rotation period to 86164.s = the Earth rotation
1755    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1756      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1757    o seaice advection: add code for choosing between the default (2nd order
1758      central differences) and multiDim advection schemes provided by
1759      pkg/generic_advdiff
1760    o seaice:
1761      - removed all references to SEAICE_GRID.h fields from
1762        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1763        (cubed-sphere configuration will change a little)
1764      - grid computations in seaice_init are obsolete now.
1765      - cleaned up code a little so that is easier to read (hopefully).
1766      - added new (better?) discretizations of default advection and diffusion
1767        (turn on with SEAICEuseFluxForm)
1768      - replace 1 in 3d global fields by kSurface in growth.F
1769      
1770    checkpoint58a_post
1771    o seaice:
1772      - bug fix in advect.F
1773    o shelfice:
1774      - separate shelfice load anomaly from pload (breaks with time
1775        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1776        Its default is 0., but it may be computed more cleverly from (unknown)
1777        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1778        done offline. A good approximation of the pressure load anomaly is
1779        necessary to avoid large initial adjustment processes underneath
1780        deep-reaching shelfice.
1781      - small fix in ISOMIP shelfice_thermodynamics
1782      - add more sophisticated thermodynamics of Hellmer (1989), this is
1783        now the default
1784      - give a few constants more intuitive names
1785    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1786      if bulk formulae are used in long integration (especially EmPmR). Turn
1787      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1788      if balancePrintMean, the imbalance that is substracted is printed to
1789      STDOUT.
1790    o fix bug (typo) in obcs_apply_eta.F
1791    o add a new package shelfice which enables us to model the circulation
1792      underneath shelf-ice with draughts of hundreds of meters.
1793     - works
1794     - to do: + include improved thermodynamics
1795              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1796                instead of new field kTopC
1797              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1798                instead of new field R_shelfIce and new code in ini_depth.F
1799                and ini_mask_etc.F?
1800              + adjust vertical mixing schemes?
1801    o seaice pkg:
1802     - add a cpp-flag to include a simple formula for a salinity dependent
1803       freezing point of sea water at the surface
1804     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1805       meridional stresses are now different (and hopefully correct)
1806    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1807       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1808       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1809    o pkg/diagnostics: add options and parameters for regional-statistics
1810       diagnostics ; define regions by reading a region-mask from a file
1811       (might add other options later)
1812    o pkg/bulk_force:
1813     - add option and parameters to use AIM surface-flux formulae.
1814     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1815       others forcing fields (defined in PARM05, parameter file "data") are loaded
1816       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1817     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1818     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1819     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1820       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1821     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1822    
1823    checkpoint58
1824    o add "--embed-source" option to genmake2 which, when the supporting
1825      tools can be compiled (as determined by genmake2) will turn on the
1826      embed_files package which then embeds the entire MITgcm source code
1827      (*.[fFhc] + Makefile) used for the build within the executable
1828      - requested by CNH but off by default
1829      - adds a paltry <9MB to the mitgcmuv executable in most cases
1830      - only writes the output when useEMBEDSRC in eedata is true
1831    o clean up 3-dim. relaxation codes:
1832      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1833      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1834      * Thanks to Tom Haine for testing!
1835    
1836    checkpoint57z_post
1837    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1838      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1839    o fix the pickup behavior for obcs in combination with ptracers
1840    o fix a bug in ptracers_external_fields_load
1841    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1842      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1843    o transfered surface NH pressure to eta field (if exactConserv).
1844    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1845         and update lab_sea output.txt file.
1846    o completing 3-dim. relaxation code: additional term
1847         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1848      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1849      * At compile time, in "EXF_OPTIONS.h" set
1850          #define  ALLOW_CLIMTEMP_RELAXATION
1851          #define  ALLOW_CLIMSALT_RELAXATION
1852      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1853          tauThetaClimRelax3Dim = 15552000.0,
1854          tauSaltClimRelax3Dim  = 15552000.0,
1855      * 3 cases:
1856          1) Use a constant-in-time 3-dim. field
1857          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1858          3) Real-time relax. to time-evolving prescribed field
1859    o Adding Laplacian-type smoothness constraint on
1860      initial and boundary (forcing) controls (ic, bc)
1861      * enable at compile-time via
1862        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1863      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1864      * Absolute scale somewhat unclear so far
1865      * no area weighting was included since no other cost term does so far
1866    
1867    checkpoint57y_post
1868    First step for a NLFS adjoint
1869    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1870    o new init. routines for calc_r_star, calc_surf_dr
1871    o still need to deal with ini_masks_etc
1872    o testreport seemed happy
1873    checkpoint57y_pre
1874    
1875    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1876    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1877    o add new offset feature to offline pkg (plus minor cleanup)
1878    o cfc fixes for final year of integration
1879    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1880      be in GCHEM_OPTIONS).
1881    
1882    checkpoint57x_post
1883    o fix testreport Pb in multiple test experiment.
1884    o cleanup our namelist syntax in verification:
1885      - make it more F95 standards compliant (some work still needed)
1886      - allows the vast majority of our tests to work with gfortran
1887    o Non-Hydrostatic:
1888     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1889     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1890    o Allow to apply AB on T,S rather than on AB(gT,gS):
1891     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1892     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1893       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1894     - need a "clever" read_pickup to restart from the other AB formulation
1895    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1896    o remove some unused variables (reduces number of compiler warnings)
1897    o adjoint
1898      * Disable useVariableViscosity for adjoint for time being
1899        (there are a number of extensive recomputations)
1900      * Initialize certain variables needed for adjoint
1901    
1902    checkpoint57w_post
1903    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1904                 fix the singleCpuIO RS version of MDSWRITEFIELD
1905       and add a WARNING if using globalFiles=T with multi-processors.
1906    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1907      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1908    o tracer advection scheme:
1909      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1910       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1911       was not very convenient).
1912      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1913       (further tests needed for the implicit DST & Flux-Limiter schemes).
1914    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1915      and sRef for convenience, handy, when you want to initialize
1916      ptracers in a large domain with a constant non-zero value. Also,
1917      untangle ptracers_init.F a little.
1918    
1919    checkpoint57v_post
1920    o change dome exp. to use variable viscosity in side-drag terms.
1921    o remove all the files from the cfc_offline test since they are now
1922      incorporated into tutorial_cfc_offline which has been producing
1923      identical results for a few days of testing
1924    o add new parameter: sideDragFactor to enable half-slip-side BC
1925      and change side-drag S/R to use viscosity from mom_calc_visc
1926      (can switch back by setting sideDragFactor=0.); affects results at
1927      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1928       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1929    o vorticity & strain are now computed without masking, to account for
1930      no-slip-side BC in variable viscosity calculation ; mask is applied
1931      anyway later on, before computing advection/coriolis terms.
1932    o modify exp4 to test new obcs support for reading from external files
1933      and for passive tracers
1934    o fix behavior of ptracers_monitor when monitor output is written to a
1935      netcdf-file; still not independent of monitor.F (writes in the same
1936      file).
1937    o change default value of tRef (put a uniform, meaningful value for ocean
1938      & atmos) and initialize sRef (was missing, as Martin mentioned).
1939    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1940      to be proportional to enstrophy dissipation length.  Thus,
1941       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1942      This is now consistent with Smagorinsky and with the manual.
1943    
1944    checkpoint57u_post
1945    o OBCS and PTRACERS: add open boundary support for passive tracers
1946      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1947        OB-values from file; this is not different from the way theta and salinity
1948        are treated
1949      - however, Orlanski-radiation conditions are not supported, and the model
1950        will stop if you use pTracers and Orlanski at the same time.
1951      - beefed up the rountine obcs_external_fields_load: now only those open
1952        boundary values are overwritten with values from files for which there
1953        are really files, otherwise the OB-fields remain untouched. This makes
1954        it possible to use different OBs at different ends of the domain (as
1955        with EXF)
1956    o reduce number of exch calls in shap_filt (s2).
1957    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1958      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1959    
1960    checkpoint57t_post
1961    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1962    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1963      same truncation, independent of the face number: affects affects several
1964      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1965    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1966      note that biharmonic viscosity + no-slip was not tested in any experiment.
1967    o fix bug in non-linear free-surf side-drag ; generate new output for
1968      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1969    o make mnc honor the writeBinaryPrec flag for most kinds of output
1970    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1971    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1972      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1973    o add brackets in multi-terms sum to get same truncation, independent of
1974      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1975      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1976    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1977      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1978      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1979      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1980      Suggested values of viscosity parameters found in mom_calc_visc.
1981      Many new viscosity diagnostics available.
1982    
1983    checkpoint57s_post
1984    o Add clearing-house for viscosity calculations, mom_calc_visc and
1985      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1986      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1987      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1988      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1989      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1990      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1991      ViscAhStrain and viscAhTension are now retired.
1992    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1993    o In response to JMC's bug report, genmake2 now ignores any soft-links
1994      that it finds in the *current* directory when searching for files.
1995      Soft-links found in any other source directories will still work as
1996      they did before.
1997    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1998      a C routine to unlimit the stack size
1999    o mnc-ify pkg/aim snapshot vars
2000    o mnc-ify pkg/land as requested by Daniel
2001    o various changes to mnc including:
2002      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
2003      - output can now be grouped so that all files within a group
2004          change the ITER portion of their names in lock-step together
2005      - can now read ("global") PER-FACE (in addition to PER-TILE) files
2006          and works with both EXCH1 and EXCH2 (but needs more testing)
2007      - writing works for all verification test cases w/ g77 on Linux
2008    
2009    checkpoint57r_post
2010    o make MNC variable initialization happen earlier
2011    o add diagnostics for (almost) each term of the momentum Eq.
2012    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
2013    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
2014    o remove MINIMAL_TAVE_OUTPUT option ;
2015      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
2016    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
2017      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
2018    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
2019    o add time-dependent SST, SSS control
2020    o cost terms in ecco/ modularized (new cost_generic.F)
2021    o cost_averages routines are modularized (new cost_averagesgeneric.F)
2022    o new infrastructure for seaice model vs. obs misfits in seaice/
2023      * driver from the_main_loop.F is seaice_cost_driver.F
2024      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
2025      * gradient check in Exp. 6a of natl_box_adjoint/
2026    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
2027      (see README file)
2028    
2029    checkpoint57q_post
2030    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
2031    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
2032      - bug was reported by Jean-Michel and Ian Fenty
2033    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
2034      update exp. cpl_aim+ocn output.
2035    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
2036      Needed for high-res. runs with large global files
2037      to be able to limit tapelev size
2038    o Changed some tests for adjoint:
2039      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
2040      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
2041      * global_ocean.90x40x15/ back to default 3-level checkpointing
2042    o Modifications to enable scripted COMMON to MODULE conversion
2043      * verification/OpenAD/code/ has necessary scripts and description;
2044      * converts, compiles and runs successfully;
2045    
2046    checkpoint57p_post
2047    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
2048    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
2049      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
2050    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
2051    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
2052      (was already the case for dissipation with mom_vecinv,
2053       and also the case for grad.PhiHyd when staggered-timeStep)
2054      This will allow to put dissipation out-off the AB time-stepping.
2055     Unfortunately, affects truncation error. Update output of exp. that "fails"
2056      (cg2d matching number) and leave the others for later: front_relax(10),
2057      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
2058      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
2059    
2060    checkpoint57o_post
2061    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2062      (2) its ready to be documented during the 20050801 DocFest
2063    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2064      for ideal_2D_oce and lab_sea on linux_ia32_g77
2065    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2066      in global1x1_tot/code_seaice_adj to access indices 32, 33
2067      (worth another tag)
2068    
2069    checkpoint57n_post
2070    o adding precip control xx_precip 32
2071    o adding swflux control xx_swflux 33
2072    o Replacing 10 forcing penalty cost routines by 1 generic.
2073    o Implementing partitioning in time-mean and variable adjustment
2074      for atmos. state.
2075    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2076    o in natl_box_adjoint:
2077      * updated exp 1 to 10
2078        (but does not have time-mean vs. variable split results yet)
2079    o updated global1x1/*_seaice_adj/
2080      to incorporate latest changes
2081    o enable useSingleCpuIO for mdsio vector routines
2082      (applies in particular to tapelev I/O)
2083    o removed inefficient K-loop in all active_file*control*.F
2084    
2085    checkpoint57m_post
2086    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2087      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2088    o pkg/exch2: filling of face-corner halo regions is optional
2089      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2090    
2091    checkpoint57l_post
2092     tag before updating tutorials (pre-release-2)
2093    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2094       for output and interpolation of input fields onto model grid)
2095    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2096       Affects results of exp. rotating_tank ; update output.txt.
2097    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2098          and taking the square quantity and/or using a fraction-weight field.
2099    o fix aim_diagnostics_init.F mate numbers.
2100    o add mnc output capability to diagnostics/diagstat and update
2101      our cvsignore files for the ACSII output generated
2102    
2103    checkpoint57k_post
2104    o lab_sea now uses diagnostics package and provides a suite of
2105      new EXF diagnostics output.
2106    
2107    checkpoint57j_post
2108    o exf
2109      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2110        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2111        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2112      * extended diagnostics output
2113        - now includes all EXF variables
2114        - hs, hl moved to common block
2115        - separate S/R for diagnostics, called after ctrl vector is added
2116        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2117        - EXFqnet contains true Qnet (i.e. includes qsw)
2118      * updated verif. lab_sea, global_with_exf
2119      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2120        to ensure that diagnostics sees a true EXFqnet
2121    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2122    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2123      several times with different frequencies.
2124    o mnc-ify the thsice package as requested by Daniel Enderton
2125      - the monitor--MNC output needs work
2126      - many attributes need to be added (most are currently blank)
2127    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2128      - many attributes need to be added (most are currently blank)
2129    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2130    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2131    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2132      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2133         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2134    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2135     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2136    
2137    checkpoint57i_post
2138    o Diagnostics package was changed: diagnostic allocation is now deactivated
2139      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2140    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2141      add 1rst Order upwind vertical Shear.
2142    o add a quick fix for A/B checkpointing in OFFLINE mode
2143    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2144      end-run around the C/Fortran linking horror in eesup/src/timers.F
2145    o added pkg/runclock: allows user to terminate run based on wall clock
2146    o added non-hydrostatic scaling parameter: nh_am2
2147    o pkg/my82: futile attempt to make results compiler-independent by adding
2148      some "_d 0", etc. no effect.
2149    o for mnc output, fill the 'T' coordinate var with myTime and create a
2150      separate 'iter' variable for iteration count
2151    o pkg/diagnostics:
2152      add new capability: output of Global/Regional & per-level statistics ;
2153      tested against monitor output (including land & thSIce) on various exp.
2154    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2155    
2156    checkpoint57h_done
2157      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2158      data.diagnostics, data.gchem, data.ptracers) is done.
2159    
2160    o pkg/diagnostics: prepare for Global/Regional statistics.
2161      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2162    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2163      and rename it: DIFFERENT_MULTIPLE
2164    
2165    checkpoint57h_post
2166    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2167    o pkg/diagnostics: change output frequency, now in seconds (instead
2168      of Nb of iterations). This requires to change data.diagnostics.
2169    checkpoint57h_pre
2170    
2171    o in mnc, let the user create the output dir if both mnc_outdir_date
2172      and mnc_outdir_num are false
2173    o add fflags() to pkg/diagnostics which allows one to specify, on a
2174      per-file basis, the file precision [default behavior is unchanged]
2175    o added diagnostics to pkg/kpp, including computation of mixed layer
2176      depth based on a temperature/density criterion
2177    o updated verification/natl_box to test the new pkg/kpp diagnostics
2178    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2179    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2180    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2181      not mnc -- this mistake was found by JMC and is now corrected
2182    
2183    checkpoint57g_post
2184    o add Adams-Bashforth 3rd Order time stepping:
2185      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2186      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2187    checkpoint57g_pre
2188    
2189    o make lambda[Theta,Salt]ClimRelax spatially varying
2190      (default remains spatially uniform constant based on tau)
2191    o added new control variables
2192      * init. uVel, vVel, etanN
2193      * lambda[Theta,Salt]ClimRelax
2194    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2195      (suggested by G. Forget)
2196    
2197    checkpoint57f_post
2198    o add parameter "baseTime" = model base time = time at iteration zero
2199      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2200      account for baseTime shift
2201    o move Coriolis arrays from PARAMS.h to GRID.h
2202    checkpoint57f_pre
2203    
2204    o mnc-ifying the seaice package
2205    o introduced an alternative length scale calculation for use in the limiting
2206      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2207    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2208    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2209      as well as grad(vort3).  Made it compatible with both approximate form
2210      for the cubed sphere and full form of these gradients.  Added flag
2211      useFullLeith to select between approximate and full form.  
2212    o add "d0" in getcon.F to reduce differences between compilers/platforms
2213      update output.txt of exp. fizhi-gridalt-hs
2214    o change port_rand funtion to allow to set the seed.
2215    o fix obscure MNC bug involving conversion between reals and integers
2216      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2217        new version is now more standards-compliant
2218    o adjoint-related modifications
2219      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2220      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2221      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2222    
2223    checkpoint57e_post
2224    o Adding eddy stress controls a la Ferreira et al.
2225    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2226    
2227    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2228      update output.txt of exp. fizhi-gridalt-hs
2229    o add more "Z" dimensions and associated coordinate vars to MNC
2230    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2231    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2232      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2233      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2234      months and years.  Requires pkg/cal.
2235    o diagnostics: add pickup functionality
2236      - off by default for backwards compatibility
2237      - current version only uses MDSIO -- MNC will be added
2238    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2239    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2240    
2241    checkpoint57d_post
2242    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2243    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2244      output from the diagnostics package
2245    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2246    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2247      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2248    o add coordinate variables to the MNC output from the diagnostics package
2249    o change MNC-flags default value: true when useMNC=TRUE
2250    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2251      the ability (off by default) to read the grid information using MNC
2252    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2253    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2254    o do snap-shot diagnostics at the middle of the time-interval (instead of
2255      at the end).
2256    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2257      new test for AIM with thSIce + slab-ocean
2258    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2259    o move state variable diagnostics to the beginning of the time step ;
2260      (note: still needs some work specially for snap-shot diagnostics)
2261      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2262    
2263    checkpoint57c_post
2264    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2265    o generate new output.txt files on faulks with g77 & the new -ieee option
2266    checkpoint57c_pre
2267    
2268    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2269      update output.txt of exp. global_ocean.90x40x15
2270    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2271      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2272    o add saltFlux(+File) forcing capability with periodicExternalForcing
2273    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2274    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2275    o improvements for the MNC output from DIAGNOSTICS:
2276      - correct handling of the unlimitied dimension
2277      - all dims now have associated coordinate variables
2278      - variables located at U, V, and Corner ("Z") points are now written
2279        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2280        *all* data points are output
2281    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2282    o added pkg/seaice/seaice_monitor.F
2283    o mdsio_readfield.F can now read files visible only to master MPI process.
2284    o pkg/seaice: some test code for ice-modified ocean stress
2285    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2286      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2287      spurious negative numbers for precipitation and humidity.  Will cause
2288      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2289    o pkg/ctrl/
2290      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2291        May be enabled via doPackDiag
2292      *  introduce z-scaling of
2293         + gradient (doZscalePack) and
2294         + control (doZscaleUnpack)
2295    o pkg/mdsio/
2296      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2297      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2298    
2299    checkpoint57b_post
2300    o simplify options in diagnostics_fill arguments (remove weird combinations)
2301    o fix MNC coordinate variables so that they now contain per-face index
2302      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2303      general, EXCH2 grids are only aligned to a "local" coordinate system
2304    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2305    o Implement instantaneous output within pkg diagnostics:
2306      setting a negative frequency in data.diagnostics produces
2307     "snap-shot" output (as opposed to time-average if freq > 0)
2308    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2309      NOTE: change ptracer diagnostics name: use 2 characters to work with
2310            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2311    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2312      becomes the coordinate variable for the 'T' dimension
2313    o add CF-style coordinate variables to MNC
2314      - just a first cut:  numbers are meaningless on the cubesphere and
2315        missing along the T axis but otherwise it works!
2316    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2317    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2318    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2319      this is based directly on what the model compute, so that the content of
2320      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2321    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2322    o clean up build options files for SunOS, in particular
2323      - remove -traditional from xmakedepend
2324      - change -xarch=v9 to -xarch=native for f77
2325      - restore use of make (not gmake)
2326      - add CC=gcc if using g77
2327    o changes per discussion of AM, JMC, & EH3 today:
2328      - move redundant "grid" variables out of "state" -- in preparation of
2329        creating proper CF-style coordinate variables and in recognition
2330        that any/all grid variables can be easily copied (eg. w/NCO) from
2331        the grid files into any of the other NetCDF files
2332      - *always* output grid variables with MDSIO (this will eventually be
2333        changed)
2334      - output MNC grid file if useMNC is true
2335    o every instance of _END_MASTER() has been found and replaced with
2336      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2337      preprocessors
2338    o re-arrange diagnostics pkg initialisation:
2339     - allow each package to extend the available diagnostics list
2340     - add some checking and fix small problems (multi-threaded, ...)
2341     - new S/R diagnostics_fill (replace fill_diagnostics):
2342       look through the short list of active diag. (instead of the long list)
2343       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2344    
2345    checkpoint57a_post
2346    o this set of changes restores TAMC compatibility
2347      tested for global_ocean.90x40x15 adjoint on trough
2348      (what a pain)
2349    
2350    checkpoint57a_pre
2351    o some modifs in tools/build_options for sunos
2352    o call ctrl_pack for ctrl at end for optimcycle=0
2353    
2354    checkpoint57
2355    o add horizontal bi-harmonic viscosity for vertical velocity
2356      - new parameter viscA4W (defaults to viscA4)
2357      - affects only non-hydrostatic code
2358      - to be done: no-slip lateral boundary conditions
2359    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2360    o implement Implicit Vertical advection for pTracers
2361    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2362      (implemented also for implicit vertical diffusion & advection)
2363    o OBCS: extend application of tracer open boundary conditions
2364      to a strip beyond the boundary of width Olx/Oly
2365    o add call monitor to TAF set of required calls (flow directives)
2366      and include in natl_box_adjoint
2367    o untangle a few ifdefs related to cost, ctrl, autodiff
2368      untangel a few ALLOW_ECCO_OPTIMIZATION
2369    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2370      (theta2, salt2 in ecco_cost_weights)
2371    
2372    checkpoint56c_post
2373    o OBCS as control variables
2374      - update ctrl_ad_diff.list, obcs_ad_diff.list
2375      - remove balance of obcs controls from default
2376      - fix index bug nobcs in ctrl_init
2377      - fix dummy fields filen in ctrl_pack
2378      - add dummy weights for obcs
2379    o lsopt: comment out fort.94 output
2380    o optim:
2381      - remove unnecessary header files
2382      - adjusted namelists
2383      - add xerbla.F to Makefile
2384    o exf:
2385      - multiple modifications of exf_check_range
2386      - unit change in exf_init_runoff from [m/year] to [m/s]
2387    o mdsio:
2388      - i/o-vector change debugLevel from debLevA to debLevB
2389    
2390    checkpoint56b_post
2391    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2392      is called from DO_THE_MODEL_IO
2393      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2394      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2395      - clean up PTRACERS_WRITE_TIMEAVE a little
2396    o add another verification experiment that tests both the cfc-pkg and
2397      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2398      reactive tendencies treated inline with regular timestepping
2399    o testreport previously did a lousy job of comparing small numbers, so
2400      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2401      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2402      testreport.
2403    o ptracers_monitor: bug fix for MPI
2404    
2405    checkpoint56a_post
2406    o GCHEM: finish reorganizating the package
2407      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2408        (introduces another 3D-array for each passive tracer, but only if
2409        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2410        gchemTendency is not needed because the timestep is done separately)
2411      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2412      - GCHEM is now---more or less cleanly---separate from PTRACERS
2413      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2414        so clear to me how that should be done in a general way.
2415    o CFC: improve formatting of output in CFC_ATMOS
2416    o PTRACERS:
2417      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2418        that ALL experiments with ptracers enable can be checked. This makes
2419        GCHEM_MONITOR obsolete.
2420      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2421        monitorFreq
2422      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2423    o add PTRACERS (PTR0[1-5]) to testreport output
2424    o exf_check_range:
2425      * default changed to .TRUE.
2426      * will check values for niter0 if debLevA, every timestep if debLevB
2427      * STOP in exf_check_range if 'out of range'
2428      * range chosen generous to allow for potential extema
2429      TBD: a version with stricter range
2430           permitted range would be runtime parameters
2431    o GMredi:
2432      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2433      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2434      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2435    o GCHEM:
2436      - move call to GCHEM_FORCING_SEP, so that it is now called before
2437        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2438      - introduced a useGCHEM runtime flag and applied it everywhere.
2439      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2440        this flag is now only visible within GCHEM-pkg routines.
2441      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2442        be replaced by a 3D array that is computed before thermodynamics; for
2443        this, the tracer ID iTracer had to be included into the parameter list
2444        of ptracers_forcing
2445      - set up forward_step to call gchem_forcing, that will replace
2446        gchem_forcing_int in ptracers_forcing
2447      - cleaning up
2448    o small cleaning of exch2: remove files that are also in eesupp/src
2449    
2450    checkpoint56
2451    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2452    o mnc: cleanup "full" files--fixes out-of-memory problem
2453    o ECCO-GODAE
2454      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2455      * fully merged and updated from SIO code
2456        windstress sign change affects
2457        - exf_inscal_[u/v]stress
2458        - sign of xx_tau[u/v] adjustments
2459        - signs in cost_scat
2460      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2461      * natl_box_adjoint updated and compressed
2462      * 2-level checkpoint switch added
2463        (tested in EXP. 1 of natl_box_adjoint)
2464      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2465    o SVD
2466      * first complete, non-hacked version for SVD calculations
2467      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2468        performed via direct access files admtlm_vector.it????
2469        (via ctrl_[un]pack)
2470      * optimcycle is used for ARPACK iteration counter
2471        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2472      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2473        and add linear transforms where necessary
2474      * controls are initial/final SST, SSS (can be extended; need to check
2475        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2476    o mdsio: filename info to both stderr, stdout
2477    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2478      from sign change
2479    
2480    checkpoint55j_post
2481    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2482      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2483    o add consistent build directories and .cvsignore files to verification
2484    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2485    o make all subroutines 30 or less characters in length for certain older
2486      compilers to work (a thorough search only turns up two routines in
2487      pkg/ptracers)
2488    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2489      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2490    
2491    checkpoint55i_post
2492    o change arrays for total vertical diffusivity (2.D if explicit,
2493      3.D if implicit) ; each ptracer uses its own background value.
2494    o added mnc/NetCDF output capability to ocn_compon_interf
2495      - added bits to verification/cpl_aim+ocn so that it can run on
2496        ITRDA and other clusters without the mpirun "-wd" option
2497    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2498      configuration
2499    o give MNC the ability to create additional files rather than
2500      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2501      - the default is just less than 2GB which is a practical limit
2502        on many systems
2503    o Compute the non-local term using either KPP vertical diffusivity (=default)
2504       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2505    
2506    checkpoint55h_post
2507    o add verification test "vermix"
2508    o remove all the *_ioinc flags and replace with the single global
2509      outputTypesInclusive flag
2510    o allow to set a vertical profile of vertical diffusivity for T & S
2511    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2512    o useMNC moved from data.mnc to data.pkg
2513    
2514    checkpoint55g_post
2515    o Renaming carbon AD experiments to comply with testreport conventions
2516    o Updating adjoint of Held-Suarez hs94.1x64x5
2517    o Fixing directives for non-ECCO forward_step, after ECCO directives
2518      have been fixed to avoid recomp. of do_oceanic_phys
2519      Works well for global_ocean.90x40x15,
2520      but recomp. issue remains for carbon
2521    o Updating adjoint output for natl_box_adjoint after
2522      pkg/ecco has been modified (see taga c55d_post)
2523    
2524    checkpoint55f_post
2525    o rename to timeave_init_fixed
2526    
2527    checkpoint55e_post
2528    o some delicate re-shuffle of store directives to avoid one
2529      extra call of do_oceanic_physics
2530      affects ecco_the_main_loop.F, do_oceanic_physics.F
2531      checkpoint_lev1_directives.h
2532    o NB: this may break global_ocean adjoint temporarily,
2533      but it is clear how to fix it. Will do later, need this now.
2534    
2535    checkpoint55d_post
2536    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2537    o ecco_cost_weights is modified to 1x1 runs
2538    o modifs to allow observations to be read in as
2539      single file or yearly files
2540    o enable to read exf forcing fields as either
2541      single file or yearly files (flag useExfYearlyFields)
2542    checkpoint55d_pre
2543    
2544    o switch between 2-level and 3-level checkpointing
2545    o add ability of MNC to write local and "partial" (eg. 2D slices where
2546      the full 3D field is never actually stored) arrays to NetCDF files
2547      with the correct (that is, the complete multi-dimensional) set of
2548      array indicies
2549      - used in mom_vecinv() to write the diagFreq output
2550      - tested (demonstrated) in verification/aim.5l_cs
2551    o further mnc-ification
2552      - add verification/lab_sea to the list with mnc setups
2553      - fix undefined mnc v-names in cd_code
2554      - add kpp to mnc output (both snapshot and timeave)
2555    o non-hydrostatic code
2556      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2557        in calc_gw.F
2558      - defaults to viscAh
2559      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2560        friction or Leith) in non-hydrostatic mode, as long as there is
2561        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2562    o pkg/cost
2563      extend simple cost functions to treat time mean quantities
2564      (T,U,V) via cost_accumulate_state from cost_tile
2565    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2566        be 2 times larger than the minimum size the advection scheme requires.
2567        now get a perfect conservation of salt in advect_cs test-exp (updated)
2568    o GGL90 (Gaspar's TKE mixed layer)
2569      - add horizontal diffusion of TKE, requires exchanges in
2570        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2571        default. In OPA there is no horizontal diffusion of TKE but the
2572        mixing coefficients are computed from a horizontal average of TKE of
2573        6 points or so. I think that diffusion has a little more physical
2574        justification.
2575      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2576        was in vain)
2577      - mask tke-variable in ggl90_init
2578    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2579    o fix biharmonic diffusion on CS-grid.
2580    o more obcs stuff
2581      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2582        for reading boundary values. This routine is called from
2583        obcs_prescribe_read
2584      - updated obcs_check
2585      - changed sponge layer relaxation parameter units for days to seconds
2586      - turned off sponge layer by default
2587      - changed argument list of OBCS_CALC to myTime+deltaTclock
2588      - fixed about 35 bugs in obcs_external_fields_load
2589    
2590    checkpoint55c_post
2591    o obcs stuff
2592      - new runtime flags useOBCSprescribe, useOBCSbalance
2593      - re-arranged obcs_calc
2594      - moved exf_getobcs to obcs_prescibe_read
2595        obcs_prescibe_read is called after ORLANSKI stuff
2596        and independent of it (executable can contain all).
2597      - updated obcs_check
2598      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2599        These may be necessary only if tangential velocities are
2600        prescribed at OB, not sure, needs testing.
2601    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2602      which simplifies the calls and passes the ifc check-bounds test
2603    
2604    checkpoint55b_post
2605    o add a 2D scalar, Z location, exchange_2 routine.
2606    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2607      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2608      affects advect_cs results (for the wrong reason): update output.txt
2609    o use a more standard discretization for biharmonic viscosity ;
2610     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2611      affects results of dome set-up: update output.txt
2612    o fix gad_advection.F (CubedSphere part), back to version 1.23
2613    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2614    
2615    checkpoint55a_post
2616    o merged code to
2617      * prescribe/read time-dependent open boundaries
2618        (works in conjunction with exf, cal)
2619      * sponge layer code for open boundaries
2620      * each boundary N/S/E/W now has its own CPP option
2621        (healthy for the adjoint)
2622    
2623    checkpoint55
2624    o up-to-date adjoint of previous breaks
2625      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2626      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2627      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2628      - carbon: * remove tr1-related adjoint verification
2629                * add ptracer as control variable
2630    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2631      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2632    
2633    checkpoint54f_post
2634    o in verification/carbin/ remove experiment related to
2635      ALLOW_PASSIVE_TRACER (array tr1 etc)
2636      code_ad/ input_ad/ results_ad
2637    
2638    o add two new packages
2639      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2640        + subject to optimization (memory)
2641      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2642        + subject to reordering (many GOTOs in the original code)
2643        + so far opps is called for every (i,j) point, and then operates in
2644          the vertical; one may want to reorder the scheme in order operate in
2645          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2646          fields)
2647    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2648      - all verification tests compile and run with linux_ia32_g77
2649      - defaults are compatible with current input files--nothing
2650        should change if you were not previously using MNC
2651      - MNC output has been added in numerous places (eg. timeave)
2652        but there are still a few writes not yet do-able with MNC
2653        (this is in progress)
2654      - flags now allow for either/or/both use of MDSIO and MNC and
2655        documentation will soon follow
2656      - numerous small formatting cleanups for ProTeX
2657    o add version info (via BUILD_INFO.h) to MNC and stdout
2658    
2659    checkpoint54e_post
2660    o add two new packages
2661      - pp81 (Packanowski and Philander, 1981), Richardson number and
2662        stratification dependent mixing
2663      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2664      - these scheme operate in a similar manner as KPP (without ghat, of
2665        course), however there is only one diffusivity that is used for both
2666        temperature and salinity (and passive tracers)
2667    o add offline package
2668    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2669      provided by Stephanie Dutkiewicz
2670    o genmake2: add ability to search for C compilers and cleanup test output
2671      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2672    
2673    checkpoint54d_post
2674    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2675    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2676      leading to additional shift by 5 days each year of integration
2677       (i.e. leading to considerable offset over the years)
2678    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2679    o start with no AB and no initial filtering (staggerTimeStep):
2680      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2681    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2682      (external loading & cpl import/export stay in forward_step.F)
2683    o update coupling interface to work with new staggerTimeStep
2684    o change MDSIO ptracers_pickup.
2685    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2686    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2687    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2688    
2689    checkpoint54c_post
2690    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2691      this affects (truncation error) output.txt of test-exp:
2692       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2693    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2694    o change Qnet to always be the net heat flux, (+upward).
2695      affects (truncation error) output of natl_box exp.: updated
2696    o define the max number of passive tracers in PTRACERS_SIZE.h
2697    o start to test mnc routinely in exp0
2698    o add sea-ice loading (sIceLoad) as a new forcing field.
2699    
2700    checkpoint54b_post
2701    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2702       impressive on Altix and Opteron systems)
2703    o diagnostics can now write NetCDF files through the mnc package
2704    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2705    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2706    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2707      affects (truncation error) output of lab_sea & natl_box exp.: updated
2708    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2709    
2710    checkpoint54a_post
2711    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2712    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2713    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2714    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2715      + internal_wave (shift in writing cg2d_ini_res)
2716    checkpoint54a_pre
2717    
2718    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2719      - modified verification/lab_sea and natl_box_adjoint accordingly
2720    
2721    checkpoint54
2722    checkpoint53g_post
2723    o prepare splitting of thermodynamics: store convect.counter in common block
2724    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2725      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2726    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2727    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2728    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2729    o restore adjointability
2730    
2731    checkpoint53f_post
2732    o modifications that affect AIM experiment results (update output.txt):
2733      - no advection of S at top interface Nr (pkg/generic_advdiff)
2734      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2735    o AIM pkg:
2736      - include stability function into surf.Flux derivative relative to Tsurf
2737      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2738    
2739    checkpoint53e_post
2740    o merged cylindrical coord configuration
2741    o added rotating_tank experiment
2742    checkpoint53e_pre
2743    
2744    checkpoint53d_post
2745    o faulks upgraded: re-generate output.txt that have changed:
2746       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2747    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2748    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2749    o added Sadourny discretization of Coriolis
2750      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2751      - re-enabled use of omega3 (useAbsVorticity)
2752    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2753      vector-invariant equations
2754      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2755    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2756      hopefully without new bugs
2757      - still to do: biharmonic friction for non-hydrostatic w
2758    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2759    o regenerated output for global_ocean_ebm (using -ieee)
2760    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2761      of mom_common/
2762      - simple re-arrangement of instructions within computing loop
2763    checkpoint53d_pre
2764    
2765    checkpoint53c_post
2766    o new version of coupler for AIM+thSIce and Ocean models
2767     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2768     - land: change Evaporation of snow
2769     - aim with thSIce: fix bug in snow-precip.
2770    o changes to calc_gw.F
2771     - bug fix for w^2 term near the bottom boundary
2772     - (hopefully) improve the lateral slip boundary condtions for use with
2773        partial/looped cells
2774      - because the bug fix changes two verification experiments anyway (exp5
2775        and plume on slope), change the lateral boundary condition from half slip
2776        to the value of no_slip_sides
2777    o ebm package wasnt quite up to the parallel task. Fixed that.
2778    o Adjoint of EBM package + verification
2779      * TLM OK
2780      * ADM not sufficient accuracy yet (needs further testing)
2781    
2782    checkpoint53b_post
2783    o Commiting new energy balance model to repository
2784      * package is pkg/ebm
2785      * verif. is verification/global_ocean_ebm
2786      * references are in ebm_driver.F
2787    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2788    C        Global thermohaline circulation. Part I:
2789    C        Sensitivity to atmospheric moisture transport.
2790    C        J. Climate 12(1), 71-82
2791    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2792    C        Global thermohaline circulation. Part II:
2793    C        Sensitivity with interactive transport.
2794    C        J. Climate 12(1), 83-91
2795    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2796    C        Destabilization of the thermohaline circulation
2797    C        by atmospheric eddy transports.
2798    C        J. Climate 7(12), 1870-1882
2799    o Will need long integration testing.
2800    checkpoint53b_pre
2801    
2802    o created pkg/mom_common in preparation for variable viscosity code
2803    o renamed and split ini_mnc_io
2804    o pkg/land: only liquid water can diffuse or run-off
2805    o AIM using land: soil wetness availability account for snow
2806    o added printMapIncludesZeros to EEPARMS namelist
2807    
2808    checkpoint53a_post
2809    o restore TAMC compatiility for exf_constants.h
2810      (no usage of _d in .h)
2811    o Additional storing in KPP in an attempt to fix
2812      TAMC problem with adjoint of KPP code.
2813      (no success...)
2814      Identical code works fine with TAF.
2815    o Fixed verification/natl_box_adjoint experiments.
2816      Initial conditions for Experiments 4 and 5 are now
2817      set to "SEAICE_initialHEFF=0", which is more reasonable,
2818      and hence gives results closer to that of Experiment 2.
2819      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2820    
2821    checkpoint53
2822    o stable checkpoint with up to date adjoint
2823      TLM tests only run for 1st grdchk at the moment. Its unclear if
2824      this is a code problem or a problem with resetting code for g_
2825      variables that is being autogenerated wrong.
2826      Otherwise:
2827       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2828       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2829         are both still in chaos following their security messes.
2830    
2831    checkpoint52n_post
2832    o various build (mostly genmake2) changes including:
2833      - ability to build/run more easily within Cygwin and MacOS X
2834      - more complicated Makefiles with a stronger dependence on Gnu Make
2835    o pkg/seaice modifications
2836      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2837        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2838        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2839      - changed proxy for geostrophic velocity and updated
2840        verification/lab_sea/results/* accordingly
2841      - removed ADI dynamic solver from pkg/seaice
2842      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2843        they caused a segmentation fault under certain circumstances
2844      - removed unused field WATR
2845    o bug fix in exf-package:
2846      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2847         now reflect that.
2848    o small fixes in the cal-package:
2849      - set reference date to first of January for the 'model'-calendar
2850      - failing of cal_CheckDate in cal_FullDate now actually results in a
2851        warning
2852    o small modifications in exf-package to increase flexibility:
2853      - change climtempfreeze from a constant to a runtime parameter that
2854        is specified in data.exf_clim (default = -1.9)
2855      - introduce runtime parameter windstressmax (default = 2.0) that is
2856        specified in data.exf
2857    o fix in pkg/thsice:
2858      - update Evap (Tsf changes) to be consistent with Latent heat flux
2859      - maintain snow precipitation unchanged (even if Tsf >=0).
2860     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2861    
2862    checkpoint52m_post
2863    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2864      this does not change any of the results, because myIter=0 in swfrac always
2865      lead to jwtype=2 (the default anyway), but the call makes little sense
2866      as a default
2867    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2868    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2869      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2870    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2871    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2872    o extending useSingleCpuIO option to work with new exch2 I/O format
2873      - old-style, missing-tile I/O is still accessible by defining CPP
2874        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2875    o monitor package can write to NetCDF files and/or STDOUT
2876    o fix re-definition bug in MNC_GRID_INIT_ALL()
2877    o doc/api_reference added
2878      - a framework for building an API Reference Manual using all
2879        the "protex" comments embedded in the code
2880      - see pkg/generic_advdiff, pkg/mnc for examples
2881    o MNC:
2882      - make myThid the last argument for all subroutines
2883      - new default for the grid files: NO halos
2884      - add useMNC and other run-time flags
2885      - separate per-file-group handling of the unlimited dimension
2886      - early initialization of MNC w/ flags read at the eeboot stage
2887        and lookup tables set in initialize_fixed
2888      - write all MNC output to a freshly-created directory
2889    o thermodynamics sea-ice (thsice) is now tested with testreport.
2890    o test exp. advect_cs: use the standard cs32 grid ; update output.
2891    o Added functionality to grdchk:
2892      pick global i,j,k position (or nearest wet) where to perform check.
2893    
2894    checkpoint52l_post
2895    o new land formulation:
2896      a) use ground enthalpy as prognostic variable to ensure exact
2897         energy conservation.
2898      b) account for water temperature and for latent heat of freezing
2899         in all processes (rain, run-off, ground storage)
2900      c) compute surface and ground temperature implicitly.
2901    o aim_v23 modification for new land model:
2902      a) Treat separately land / ocean / sea-ice surface fluxes
2903         to allow implicit computation of land & sea-ice surface temp.
2904      b) add snow precipitation.
2905    checkpoint52l_pre
2906    
2907    o fix problem (when 1 tile is empty) in min/max monitor.
2908    o fix bug in timeAve (u,vZetatave in common block)
2909    o no restoring terms under ice for pkg/seaice
2910    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2911    o bug fix for pkg/seaice pickups
2912    o change MNC call locations and add coordinate attributes
2913    o mask vorticity at the corner ; affects global_ocean.cs output
2914    o fix ini_curvilinear_grid ; test CS experiments with mpi
2915    o aim.5l_cs: modify sea-ice fraction input file ; update output
2916    o exf: Adding simple range check routine for exf fields after read
2917    
2918    checkpoint52k_post
2919    o removed top-level directory "diags"
2920      - we migrated these functions to pkg/timeave a long time ago
2921    o fixed bug introduced in pkg/monitor
2922    o accuracy ctrlprec = 32 insuffient for gradient checks using
2923      averaged fields (I/O via cost_averages)
2924      -> use ctrl.h in active_file*.F to control I/O precision.
2925    o paramter list of CALL ADTHE_MAIN_LOOP
2926    o added initial do_the_model_io to ecco
2927    o set all ...Freq to zero after cost_final
2928      taveFreq, dumpFreq, pChkptFreq
2929    o MAIN and ECCO differentiability restored
2930    
2931    checkpoint52j_post
2932    o fix nchklev in tamc.h for global_ocean...
2933    o Bringing flow and store directives up-to-date
2934    o Really weird thing!
2935      call do_the_model_io from the_main_loop with parameters
2936      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2937      TAF places a faulty re-call of initialise_varia
2938      after cost_final call which should not be there!
2939    checkpoint52j_pre
2940    
2941    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2942      error messages
2943    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2944    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2945      debug output
2946    o modfied mdsio_writefield.F to handle non-global files under exch2
2947    o update AIM Cubed-Sphere exp (aim.5l_cs):
2948      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2949    o update AIM Equatorial Channel exp:
2950      use standard aim_v23 pkg and change the SST fields to be more realistic.
2951    o globalFile now works with exch2
2952    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2953      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2954    o limit timeave output for hi-res integrations
2955    
2956    checkpoint52i_post
2957    o removed CPP_EEOPTIONS.h from verification/*/code
2958    o updated the tiling for global_ocean_pressure
2959    checkpoint52i_pre
2960    
2961    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2962      the old pkg/aim).
2963    
2964    checkpoint52h_pre
2965    o shortened offending lines in exch2_send_rx?.template
2966    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2967    o genmake2: add build & execute test for NetCDF code
2968    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2969      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2970    o added useSingleCPUIO flag to monitor.F and mon_out.F
2971    o added temporary hack for sea-ice dynamics on the cube:
2972      metric terms are ignored and it is assumed that
2973      there is no sea-ice on cube faces 1, 2, 4, and 5.
2974    
2975    checkpoint52f_post
2976    o added exch2 cube routines to pkg/exch2
2977    o modified hs94.cs-32x32x5 to use it
2978    o added new grid files to hs94.cs-32x32x5
2979    checkpoint52f_pre
2980    
2981    checkpoint52e_post
2982    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2983      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2984    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2985      to work with implicit vertical advection and AB ;
2986    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2987    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2988     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2989    checkpoint52e_pre
2990    
2991    o fix bug in impldiff when Nr=1 or Nr=2.
2992    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2993    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2994    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2995      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2996    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2997    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2998    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2999    
3000    checkpoint52d_post
3001    o re-tiled many expts to allow comparison in multi-processor mode
3002      - updated output accordingly
3003      - changed hs94.128x64x5 to use intial T from file rather than use the
3004        random number generator
3005    o add infrastructure in model routines for fizhi and gridalt packages
3006    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
3007    o changes to permit hi-res, cubed-sphere, configuration
3008      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
3009      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
3010      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
3011        of surface winds for the cube
3012      (A verification experiment, based on global_ocean.cs32x15, but with
3013       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
3014       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
3015       complete with example surface forcing files and matlab scripts to look
3016       at the output and compare it with that of global_ocean.cs32x15.)
3017    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
3018       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
3019       to conform to the common rule.
3020    o check-in the first version of the coupler + interfaces for multi-components
3021       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
3022       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
3023       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
3024       - ocean and atmos. share the same horizontal grid (no interpolation).
3025       - exchanges between component and coupler is done in forward_step
3026    o new verification experiment, cpl_aim+ocn:
3027       coupled ocean - AIM atmosphere on cs32 grid.
3028    
3029    checkpoint52d_pre
3030    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
3031    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
3032    
3033    checkpoint52c_post
3034    o Fixing OPTIONS files for use of exf:
3035      - ALLOW_ECCO not needed
3036      - ECCO_CPPOPTIONS.h should not be included from
3037        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
3038        as has been the case in the past
3039      - All cal/exf related options are currently set in
3040        single header file. Should remain so until we
3041        agree on a consistent new policy.
3042    o Removed all CPP options for cal package.
3043      cal has no more CPP options.
3044    o modified STOREs in GAD_ADVECTION
3045    o corrected key comp. for passkey
3046    
3047    checkpoint52b_post
3048    o new version: "thsice" of thermodynamic sea-ice pkg:
3049     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
3050     - modify fluxes but do not change theta directly;
3051     - light cleaning of bulk_force pkg (still needed with thsice).
3052     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
3053       + output_thsice.txt to test thsice & bulk_force pkgs.
3054    o put back grid & coriolis monitor output.
3055    checkpoint52b_pre
3056    
3057    o call "do_the_model_io" at the beginning (=> dump initial state)
3058    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
3059    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
3060      (need info on NUMBER_OF_PTRACERS)
3061    o missing PTRACERS headers in some routines
3062    o default tamc.h in pkg/autodiff supposed to crash
3063      to ensure proper customization
3064    
3065    checkpoint52a_post
3066    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
3067      - moved surfaceTendencyTice from pkg/seaice to main code
3068      - subroutine FREEZE_SURFACE now limits only surface temperature
3069        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
3070        => new output.txt for global_ocean.cs32x15 & global_with_exf
3071      - keep the old version of FREEZE for backward compatibility;
3072        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
3073      - corresponding modifs for TAF directives
3074    o added surface flux output variables to TIMEAVE_STATVARS
3075    o time-averaged output for pkg/ptracers
3076    o fix problem with ECCO-related divided adjoint
3077      snapshot file was missing some ad-variables,
3078      but no warning issued by TAF
3079    
3080    checkpoint52a_pre
3081    o some bug fixes for #undef REAL4_IS_SLOW
3082    
3083    checkpoint52 = ecco_c52_e35
3084    o after testing adjoints of checkpoint51u_post
3085    
3086    checkpoint51u_post
3087    o this is the post-merge tag of the ecco-branch
3088      (needs another clean checkout and re-testing)
3089    o various natl_box_adjoint configs and results
3090      but no input fields
3091    o obcs adjoint not yet merged!
3092    o adding ECCO global 1x1 and 2x2 degree configs
3093    o updated/extended some store directives for seaice
3094    o pkg/ecco now containes ecco-specific part of cost function
3095    o top level routines the_main_loop, forward_step
3096      supersede those in model/src/
3097      previous input data.cost now in data.ecco
3098      (new namelist ecco_cost_nml)
3099    o in ctrl/ cleaned some cross-dependencies and updated CPP options
3100    
3101    checkpoint51t_post
3102    o this is the pre-merge tag of the ecco-branch
3103    
3104    checkpoint51s_post
3105    o cleanup: removed various obsolete #define-s
3106    o pkg/grdchk
3107      - renamed 'ph-grd 3' to 'grad-res'
3108      - merged from ecco-branch
3109        (remaining bug fixes for obcs gradient checks)
3110      - additional high-precision output for testreport
3111        (grep for 'precision_grdchk_result')
3112    
3113    checkpoint51r_post
3114    o cleaned up or removed CPP_OPTIONS.h files
3115    o updated results for some of the tests to reflect the new
3116      optfiles (-ieee: -O0 instead of -O3)
3117    
3118    checkpoint51q_post
3119    o cd_code:
3120      - moved cd_scheme.F -> cd_code_scheme.F
3121      - separate read_checkpoint from cd_code_ini_vars.F
3122      - separated cd_code part from write_checkpoint
3123      - updated AD_SOURCE, generated .flow
3124      - added CD_CODE_VARS.h to the_main_loop
3125      - Moving cd_code specific store dir.s to pkg/cd_code
3126    o ctrl package totally restructured
3127      - pack/unpack now optional and decoupled from
3128        xx_/adxx_ I/O
3129      - ctrl_pack/unpack cleaned
3130        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
3131      - confined inclusion of AD_CONFIG.h to where necessary.
3132    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
3133    
3134    checkpoint51p_post
3135    o create initial cd_code package
3136      - WARNING: the initialization of fields within packages
3137        is broken because INI_FIELDS (where READ_CHECKPOINT is
3138        called) is called *before* PACKAGES_INIT_VARIABLES.
3139        This seems to be backwards since
3140        1) its important to initially zero the entire field including
3141           the "halo" region
3142        2) zeroing needs to be done *before* reading pickup info
3143           and the pickup call might or might not happen in any
3144           particular run
3145      - this needs an overhaul for R2
3146    o cleanup verification/*/code/GMREDI_OPTIONS.h
3147    o cleanup testreport
3148    
3149    checkpoint51o_post
3150    o bringing AD-related verif's up to date with genmake2
3151      - carbon/
3152      - global_ocean.90x40x15/
3153      - hs.94.1x64x5/
3154      - (front_relax/ )
3155    o (more) consistent directory structure for AD-related verif.'s
3156    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
3157    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
3158    o bug fix in find_alpha.F for MDJWF:
3159      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
3160        change rho -> rho-rhoConst
3161      - replace call find_rho to find_rhonum
3162    o initialisation of rFlx extended to full array (required by TAF)
3163      and shifted to thermodynamics
3164    o removed PTRACERS.h in ptracers routine
3165    o added surfacetendencyPtr to S/R parameter list pracers_forcing
3166    o Correcting initialisations for fVerU, fVerV.
3167    o helping TAF to recognize dependency on kUp for
3168      fVerU, fVerV
3169    o Replacing delZ by delR in pkg/ctrl/
3170    checkpoint51o_pre
3171    
3172    o undid all of cp51 pending some cleanups and discussion
3173    o added the [#include "AD_CONFIG.h"] statement to all files that need
3174       it for adjoint/tl #defines
3175     o re-worked the build logic in genmake2 to support AD_CONFIG.h
3176     o removed tools/genmake since it no longer works
3177    
3178    checkpoint51n_post
3179    o modifications to make FREEZE flux visible to pkg/kpp
3180      - moved surfaceTendencyTice from pkg/seaice to main code
3181      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
3182      - subroutine FREEZE now limits only surface temperature
3183        (this means new output.txt for global_ocean.90x40x15,
3184         global_ocean.cs32x15, and global_with_exf)
3185    o added surface flux output variables to TIMEAVE_STATVARS
3186    
3187    checkpoint51n_pre
3188    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
3189    o added [#include "AD_CONFIG.h"] to all files that use the following
3190      defines:
3191      - ALLOW_ADJOINT_RUN
3192      - ALLOW_TANGENTLINEAR_RUN
3193      - ALLOW_ECCO_OPTIMIZATION
3194    
3195    checkpoint51m_post
3196    o incorporating changes to get TAMC/TAF working in genmake2
3197      - added new TAMC/TAF targets to the Makefile
3198      - various cleanups related to package handling
3199      - these changes should have no impact on the forward model
3200    
3201    checkpoint51l_post
3202    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
3203     - faster algorithm for cal_addtime.F
3204     - higher precision arithmetic, where needed
3205     - pkg/exf *startdate variables changed from calendar date to
3206       model integration time
3207    
3208    checkpoint51l_pre
3209    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
3210    o enable to apply restoring on S & T only in a latitude band.
3211    o update output (external_forcing_surf modif. change truncation errors)
3212       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
3213    
3214    checkpoint51k_post
3215    o change default to: useNHMTerms=.FALSE.
3216     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
3217       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
3218     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
3219        exp1, ideal_2D_oce
3220     - change data file of oceanic exp (leave the results unchanged for now)
3221       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
3222    o set gravitySign automatically according to the vertical coordinate used
3223      (and change sign: back to "logical" value: +1 when R increases downward)
3224    o added an include barrier to the default CPP_OPTIONS.h and
3225      removed the #include "PACKAGES_CONFIG.h" from it
3226    o fix a bug in mom_fluxform (from chk51j_post)
3227    
3228    checkpoint51j_post
3229    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
3230    o adjusted some flow directives (dynamics, thermodynamics)
3231    o added cubed-sphere case to test cost function
3232    o heckpoint_lev?_directives.h now include
3233      pkg-specific directives, whenever those are enabled.
3234    o Moving pkg-specific flow directives to corresponding pkg
3235      Moving pkg-specific differentiation list to corresponding pkg
3236      Moving pkg-specific checkpoint-lev storing to corresponding pkg
3237      ---> conventions are
3238           - pkg_ad.flow
3239           - pkg_ad_diff.list
3240           - pkg_ad_check_lev?_dir.h
3241    
3242    checkpoint51i_post
3243    o merge of the branch-genmake2
3244      - knowingly breaks the older genmake
3245      - automatic generation of all ALLOW_${PKG_NAME} defines
3246      - new testreport supersedes older testscript
3247    o large number of package inclusion and header cleanups
3248    checkpoint51i_pre
3249    
3250    o new output for adjoin of global ocean vector invariant
3251    o fix for checkpoint of thermodynamic seaice and bulk_force
3252    o Steph gchem various cleanups
3253    
3254    checkpoint 51h_pre
3255    o fixed some single quotes
3256    o modify gchem pkg to be more versatile
3257    o modifications to clean up dic pkg
3258    o add pkg/cfc
3259    
3260    checkpoint51g_post
3261    o provide links for ARPACK and ADM*TLM
3262    o start removing verification/vero/
3263    o update AD-related stuff
3264      (in particular some IF-statements in model/src/ routines)
3265    o adding to verification/global_ocean.90x40x15/ adjoint of
3266      vector invariant setup
3267    
3268    checkpoint51f_post
3269    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
3270    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
3271      of tracer Green's fucntions for ocean inversion project.
3272    
3273    checkpoint51f_pre
3274    o Added on-the-fly spatial interpolation capability
3275        "USE_EXF_INTERPOLATION" to pkg/exf.
3276      - This is a temporary Cartesian-grid hack until
3277        the super-duper ESMF coupler becomes available.
3278      - See verification/global_with_exf/README for usage example.
3279      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
3280        flags and modified pkg/seaice accordingly.
3281    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
3282        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
3283        non-local transport term.
3284    
3285    checkpoint51e_post
3286    o pkg/mom_vecinv:
3287      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
3288      - add time-ave diagnostic of vorticity advection.
3289    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
3290    o atmospheric geopotential: - include water vapor effect;
3291                                - use p^kappa in p* scaling.
3292    o land pkg: read initial state from files.
3293    o AIM : add stratospheric drag in the upper level
3294    
3295    checkpoint51d_post
3296    o change function ILNBLNK (=> last non-blank char.) to return zero
3297      (instead of the string length) when the string. char is empty
3298    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
3299    o modif's to restore TAMC compatibility
3300      - avoid "_d" constructs in PARAMETER declarations
3301      - avoid interrupting lines by comment lines
3302    o Use cluster local disks for purely local I/O
3303      vs. globally visible disks needed for ctrl stuff
3304      (merged from ecco-branch)
3305      - new active_file_loc... and mdsio_..._loc routines
3306      - affected packages: autodiff, ctrl, grdchk, mdsio
3307    
3308    checkpoint51c_post
3309    o introducing integer flag debugLevel
3310      - debLevZero: suppress all output
3311      - debLevA: standard
3312      - debLevB: equivalent to current debugMode=.TRUE.
3313    o introducing pathname variable mdsioLocalDir for mdsio
3314      that can be specified at runtime
3315      (relevant for cluster I/O to local disk)
3316    `
3317    >>>checkpoint51b_post
3318    adjoint of ptracers
3319    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3320    o extended state in checkpoint_lev?, etc.
3321    o alternative ctrl/cost with tr1 or ptracer
3322    o new comlev1_bibj_ptracers
3323    o new ptracers.flow
3324    o made ptracers_forcing same as external_forcing_s
3325    o added verification for adjoint with ptracers
3326      - adm. grdchk fail so far
3327      - tlm. grdchk OK
3328      - checked tapelev/comlev recomputations: OK
3329    <<<checkpoint51b_pre
3330    
3331    checkpoint51a_post
3332    o added code for biogeochemistry package
3333      - new pkgs: dic, gchem
3334      - new subroutine in ptracers
3335    o modify code for biogeo packages
3336      - in model/src and pkg/ptracers
3337    
3338    checkpoint51
3339    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3340      - autodiff, ctrl, exf, grdchk, seaice
3341      kept separate packages
3342      - cost, ecco, obcs
3343    o updating verification/internal_wave, verification/lab_sea
3344      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3345    
3346    checkpoint50i_post
3347    o Preparing next differentiable checkpoint and sync
3348      of MAIN vs. ecco-branch
3349      - 1st step: this one is differentiable
3350      - 2nd step: next(! not this) checkpoint will have updated packages
3351                  from ecco-branch)
3352    
3353    checkpoint50h_post
3354    o new package "land": provide surface BC for AIM.
3355    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3356    o AIM: use true log-P extrapolation for near surface temp (= as in
3357        F.Molteni paper) ; update aim.5l_cs output.
3358    o New variable in PARM03 for more flexible pickups
3359    o somewhat cleaned package initialisation sequence for
3360      ctrl/ cost/ ecco/ in packages_... routines
3361    
3362    checkpoint50g_post
3363    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3364      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3365      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3366        made the default because of faster convergence than ADI
3367    
3368    checkpoint50f_post
3369    o exf totally restructured
3370      - replaced all exf_set_ routines by one generic exf_set_gen.F
3371        and made sure it's still differentiable
3372      - split exf_getffields.F into new exf_bulkformulae.F
3373      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3374      - updated adjoint/makefile and relevant verif. accordingly
3375    
3376    checkpoint50f_pre
3377     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3378          + change Evap over land. (update aim.5l_cs output)
3379     o added missing .cvsignores and made uniform across expts
3380     o changed configuration of tidal_basin_2d expt
3381     o added pkg/debug functions for tracing code in fatal crashes
3382     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3383     o new fn in pkg/monitor to stop model if solution grows too big
3384     o removed lots of single quotes from comments
3385    
3386    checkpoint50e_post
3387    o make KPP work with PTRACERS
3388     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3389       nearly a copy of kpp_transport_s
3390     - there is no analogue to SurfaceTendencyS, so I have to use
3391       gPtr(of the surface layer) instead
3392    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3393    checkpoint50e_pre
3394    
3395    checkpoint50d_post
3396    o change kpp output from multiple-record state files to single-record state
3397      files analogous to write_state.F
3398    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3399      analogous to the cg2d-related output.
3400    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3401      so that writing to internal file fn (with length 512) fails.
3402    checkpoint50d_pre
3403    
3404    checkpoint50c_post
3405    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3406    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3407    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3408    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3409    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3410    
3411    checkpoint50c_pre
3412    Merging from release1_p13:
3413    o bug fix for pkg/seaice dynamic solver
3414    o Added SEAICE_initialHEFF to pkg/seaice
3415    
3416    checkpoint50b_post
3417    o store u*,v* in gU,V instead of in guNm1,gvNm1
3418    o in order to put the momForcing out of the Adams-Bashforth:
3419      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3420      to timestep.F
3421    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3422    o re-generate output for highly sensitive test-exp:
3423       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3424    
3425    checkpoint50b_pre
3426    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3427    o corrected CPP option mismatch in exf_Bulk... functions for case
3428      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3429    
3430    checkpoint50a_post
3431    o Bug fix for merging between c50 and KPP.
3432      ikey was passed from thermodynamics to kpp_calc via
3433      common block rather than being recomputed in kpp_calc,
3434      in contradiction with new key itdkey.
3435      New key ikppkey created, and tamc.h headers updated.
3436    
3437    checkpoint50
3438    - 2nd step of merge with ecco-branch:
3439      merge changes in ecco-branch back into main trunk
3440    - bug fix in find_alpha
3441    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3442    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3443    - merged some sliced AD support routines
3444    
3445    checkpoint49
3446    merged from ecco-branch:
3447    o exf:
3448      - Enable initialisation of forcing fields to constant
3449        (runtime) values.
3450      - in exf_getffields.F
3451        Reduce i-/j-loop to interior domain, discarding overlaps.
3452        That also fixes wrong TAF-key computations for key_1, key_2
3453        with bulf formulae.
3454      - exf_init.F modify #ifdef for exf_init_evap
3455      - exf_getffieldrec.F, ctrl_getrec.F
3456        The following INT-usages are not safe:
3457          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3458          fldcount = int(fldsecs/fldperiod) + 1
3459        and were modified.
3460    o autodiff: checkpoint_lev...
3461      - updated storing for bulk formulae (some arrays were missing)
3462      - added state for seaice package
3463      - synchronized with main branch
3464    o DIVA:
3465      Modif.s in
3466      - the_main_loop.F
3467      - the_model_main.F
3468      and added cost_final_restore.F cost_final_store.F
3469      o With these changes, it is possible to fully separate
3470        the first forward run to compute the cost function (mdthe_main_loop)
3471        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3472        into separate model executions.
3473        This enables better tuning of DIVA to given queue sizes.
3474      o Loss of cost function value in consecutive DIVA runs is
3475        fixed by storing to 'costfinal' file.
3476      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3477        beginning/end of adjoint integration is accounted for.
3478      The current changes apply to TAF-1.4.26.
3479      TAF has one remaining bug, requiring one manual change
3480      (see MITgcm manual).
3481    o cal: synchronized between MAIN and ecco-branch
3482    
3483    checkpoint48i_post
3484    o Changes to restore differentiability of code w.r.t. previous tag
3485      (mostly adding new routines to make list and replacing
3486      pressure by totPhiHyd).
3487    o Updated and merged grdchk package
3488      - has both ADM and TLM checks
3489      - works for single- and multi-proc.
3490      - output cleaned
3491      - worked successfully for parallel DIVA
3492    o genmake:
3493      - Adding -platform=SP4
3494      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3495    o Modif. for DIVA:
3496      ctrl_unpack should not be called in intermediate DIVA interval.
3497      (similar thing would apply for active files such as
3498      tbar, sbar, psbar, which should not be reinitialised;
3499      only relevant for ecco-branch)
3500    
3501    checkpoint48h_post
3502    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3503    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3504    o Added SEAICE_initialHEFF to pkg/seaice
3505    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3506    
3507    checkpoint48g_post
3508    --- EOS:
3509    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3510      store total Potential in totPhyHyd for diagnostics & EOS.
3511    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3512    --- Pressure/geopotential gradient:
3513    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3514    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3515      ( changes results of global_ocean_pressure )
3516    o NLFS + z-coord.: add eta*Rho' contribution.
3517    o accurate phiHyd when using interface-W at the middle between 2 centers
3518     ( changes results of ideal_2D_oce )
3519    o includes r* 2nd term in potential gradient.
3520    
3521    checkpoint48f_post
3522    Merging from release1_p12:
3523    o Modifications for using pkg/exf with pkg/seaice
3524      - improved description of the various forcing configurations
3525      - added basic radiation bulk formulae to pkg/exf
3526      - units/sign fix for evap computation in exf_getffields.F
3527      - updated verification/global_with_exf/results/output.txt
3528    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3529      (SBO) core products, including oceanic mass, center-of-mass,
3530      angular, and bottom pressure (see pkg/sbo/README.sbo).
3531    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3532      to avoid negative values in shallow regions.
3533      - updated verification/natl_box/results/output.txt
3534      - updated verification/lab_sea/results/output.txt
3535    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3536    o Added useSingleCpuIO option (see PARAMS.h).
3537    o Updated useSingleCpuIO option in mdsio_writefield.F to
3538      work with multi-field files, e.g., for single-file pickup.
3539    o pkg/seaice:
3540      - bug fix in growth.F: QNET for no shortwave case
3541      - added HeffFile for specifying initial sea-ice thickness
3542      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3543    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3544      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3545    o pkg/seaice:
3546      - adjoint-friendly modifications
3547      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3548    
3549    checkpoint48e_post
3550    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3551    o dynamics: change definition of computational domain & adapt mom_fluxform
3552      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3553    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3554        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3555        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3556        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3557        inverted_barometer solid-body.cs-32x32x1
3558      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3559    
3560    checkpoint48d_post
3561    o in preparation for r*:
3562     a) use pre-computed gradient of hydrostatic potential:
3563        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3564     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3565        => affects results of glob_oce_pressure (different truncation error)  
3566      update output.txt of ideal_2D_oce & global_ocean_pressure
3567    
3568    checkpoint48d_pre
3569    o in preparation for r*:
3570      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3571      pass the 2 comp. of the grad. as arguments to momentum S/R.
3572      but for the moment, only used if it does not change the results.
3573    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3574    
3575    checkpoint48c_post
3576    Modifications in treatment of initial flux forcing controls
3577    to avoid extra storing of flux fields.
3578    
3579    checkpoint48c_pre
3580    o Added tidal_basin_2d experiment (currently 1D!)
3581    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3582    
3583    checkpoint48b_post
3584    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3585     (modification to pressure gradient not yet implemented)
3586    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3587      (for U & V) that are used for vertical advection of momentum.
3588    
3589    checkpoint48a_post
3590    o In preparation for r*, use temp. array to compute vertical transport
3591       in flux-form momentum pkg. => change results of few test-exp.
3592      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3593                        lab_sea, natl_box & plume_on_slope
3594    
3595    checkpoint48
3596    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3597    
3598  checkpoint47j_post  checkpoint47j_post
3599  o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.  o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3600  o moved adexch from forward_step to addummy_in_stepping  o moved adexch from forward_step to addummy_in_stepping

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