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revision 1.82 by mlosch, Mon Aug 19 14:21:30 2002 UTC revision 1.1130 by mlosch, Wed Jun 24 08:05:07 2009 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice:
8     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
9      1. introduce fields for time step (N-1)
10      2. do not use levels 2 and 3 anymore (but keep them)
11      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
12         includes changes to pkg/thsice/thsice_get_velocity.F,
13         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
14         pkg/obcs/obcs_apply_uvice.F.
15     - completely remove code for leap-frog time stepping for second order
16       advection
17    
18    checkpoint61q
19    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
20     - the boundary conditions along open boundaries are unclear, because the
21       associated masks are set to zero and are thus treated as closed when
22       applying the slip-boundary conditions.
23     - move initialisation of grid variables from seaice_init_varia to _fixed
24    o adding doc/diags_changes.txt
25    o model/src:
26      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
27       to avoid "_diags" naming if no relation to pkg/diagnostics.
28      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
29       file and only call PLOT_FIELD_XYZ if debugMode=T.
30      remove few PLOT_FIELD_XY calls outside initialisation.
31      remove few unnecessary BARRIER.
32    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
33      of salt_plume package in Southern Ocean
34    o pkg/thsice:
35     - fix hOceMxL in overlap (needed for sea-ice advection);
36       update output of experiment global_ocean.cs32x15.icedyn.
37    o pkg/seaice:
38     - make the (placeholder-)tracer IceAge a little more meaningful
39      by avoiding ridging of age due to convergent ice flow
40     - add diagnostics for surface temperature, atmospheric and oceanic
41       heat flux, and atmospheric and oceanic ice growth
42    
43    checkpoint61p
44    o eesupp (global_max & global_sum):
45     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
46     - remove starting & endding barrier (no longer needed)
47    o pkg/mdsio, writelocal:
48       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
49       (remove the STOP): uses shared buffer IO to store data from all threads
50       and then let master-thread write nThreads tiles.
51    o pkg/mdsio (read/write field):
52     - tiled IO done in 1 piece (all levels at a time);
53     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
54     - multi-threaded: allow to read/write local (non-shared) array
55       (was already working with singleCpuIO ; now works also without);
56       => no longer needs barrier call after reading a file (added inside
57       mds_read/write field).
58     - move barrier calls outside gather/scatter_2d to mds_read/write_field
59    o pkg/obcs/exf
60      - exf_getffieldrec.F: add a few ". _d 0" and
61                            add code to catch the case fldperiod = 0.  
62      - obcs_precribe_read.F: change if statements so that they match
63                              the variable type (_RL)
64      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
65        exf_iprec) as part of namelist EXF_NML_01
66    o pkg/mdsio:
67      - read/write tiled (local) files: read/write 1-level tile chunk at a time
68        (instead of segment of length sNx); expected to speed up tiled IO.
69    o pkg/exch2:
70      - take buffer copy from/to array out of S/R exch2_send/recv into new
71        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
72        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
73      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
74      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
75        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
76        including Topology header file (and common blocks).
77      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
78        remove 2nd exch call in exch2_s3d_rx (no longer needed).
79      - document S/R arg. list (+ update some comments)
80    o pkg/seaice:
81      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
82        temperature and humidity over sea ice based on climatological values.
83      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
84        of LSR (this change is expected to change the results slightly because now
85        it uses slightly difference moduli from the second last LSR solution, but
86        that is more consistent with the stress computations; this part of the code
87        is not tested in the verification experiments)
88      - fix diagnostics for flux of ice in case of B-grid
89      - turn strain rates eij and press into global fields within global
90        common block in SEAICE.h for more straighforward diagnostics
91      - fix diagnostics for principal stress components, press, zeta, eta
92        to give something meaning full
93    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
94      new output (all 4 tests) using default rotationPeriod.
95    o pkg KPP:
96      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
97      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
98        and normal grid from 1 to Nr)
99    o Fix computations of L4rdt in mom_calc_visc.F
100    o eesupp:
101      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
102      should be called before a "stop" if we know that all process are going
103      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
104    
105    checkpoint61o
106    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
107    o model/src/ini_curvilinear_grid.F:
108       compute angleSin/CosC when they are not read from a file
109    o pkg/seaice:
110       add pseudo time stepping for LSOR
111    o pkg/exch2:
112       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
113    o pkg/seaice:
114       Adding separate sea ice albedo, drag coefficients, and HO in Southern
115       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
116    o SingleCpuIO:
117       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
118    o pkg/seaice:
119       put exchanged variable in (local) common block for MPI+Multi-Threads
120       to work (necessary with exch1, and for now with exch2 too).
121    o verification: to get more experiments tested with mpi, mth and mpi+mth,
122      change tiling of:
123       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
124       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
125      update output of exp:
126       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
127       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
128      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
129                       (note: output.txt generated on faulks using only 1 tile)
130    o eesupp & mdsio (SingleCpuIO):
131     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
132       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
133       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
134     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
135     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
136       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
137    o pkg/exch2:
138     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
139       read parameter file "data.exch2" if it exists; otherwise try default regular
140       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
141     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
142       with new code (not to be used, just as a backup solution).
143     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
144       in utils/exch2/input.
145    
146    checkpoint61n
147    o eesupp & mdsio (SingleCpuIO):
148      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
149        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
150        receive real*4 array (instead of real*8) to read/write 32.bit files.
151        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
152         and remove new mapping S/R)
153    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
154      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
155        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
156        when using exch2. Add S/R to map global io-buffer to global model array.
157      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
158    
159    checkpoint61m
160    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
161      and add 3 other S/R for other types (R4,R8,RS).
162      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
163    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
164     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
165     - reduce number of macro definitions (keep only those which are used);
166       can always call directly the corrresponding S/R if needed.
167     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
168       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
169     Fixed wrong type of arg in:
170       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
171       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
172     To fix: global_sum of var in common block is wrong (multi-threaded) in:
173       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
174     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
175    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
176      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
177    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
178    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
179      edges are closed (zero depth); might happen with "blank tiles";
180      for now, disabled if using OBCS.
181    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
182      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
183    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
184      to reduce length of 1.D array print in STDOUT.
185    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
186      + use 48 tiles (16x8): this will allow to test "blank tiles".
187    o start to test MPI + multi-threaded (change testreport to skip tests
188      where number of tiles do not match).
189    o genmake2: add option "-omp" to turn on Open-MP ;
190      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
191    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
192      and keep the original tile numbering. Note: compatible with old
193      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
194    
195    checkpoint61l
196    o Overlaps had been forgotten in calculating ijk keys : fixed
197    o fix cyrus makedepend for gcc 4.4
198    o experiment fizhi-cs-aqualev20:
199      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
200      and generate new output. Note: new output is much closer to the old
201      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
202      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
203    o pkg/fizhi:
204     - change to avoid indices going deliberately over array-bounds
205     - remove unnecessary MPI stuff
206     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
207     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
208       does not go over array-bounds and therefore returns reliable output.
209     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
210       this S/R has 4 output arguments, which are used inside "get_alarm";
211       when it is called with the same variable "ndum" in place of several
212       output arguments, this produces weird side effect inside "get_alarm"
213      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
214       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
215       address) and produces error.
216    o tools/gemake2: (March 27-29 2009)
217      with option "-mpi": link *_mpi files from "MODS" dir (this is what
218      testreport does).
219    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
220    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
221       update lab_sea.lsr & lab_sea.salt_plume results
222    o pkg/seaice:
223      Major overhaul of the LSOR solver: change discretization from original
224      finite differences to finite volume. The old routine is still in the
225      file seaice_lsr.F and can be turned on with the CPP-flag
226      SEAICE_OLD_AND_BAD_DISCRETIZATION
227      Along with this change, the discretization of the strain rates is changed.
228      The same flag turns on the old discretization in seaice_calc_strainrates.F
229      All verification experiments with seaice are affected (except for
230      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
231      results by setting the above flag.
232      Further changes involve changes in defaults:
233      - ALLOW_FLOODING is defined and turned on by default
234      - SEAICEadvSnow = .true. is now the default
235      - SEAICEadvSalt = .true. is now the default
236      - SEAICEadvAge  = .true. is now the default
237      - SEAICE_clipVelocities  = .false. is now the default
238                                         (as per J. Zhang's recommendation)
239      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
240        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
241      - seaice_growth: replace computation of UG by a simple copy from wspeed
242    
243    checkpoint61k
244    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
245      seaice_lsr: fixed a few metric terms,
246                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
247                  add more debugging diagnostics
248      seaice_evp: removed superfluous many metric terms of FV discretization
249                  of stress divergence
250                  affects lab_sea, lab_sea.hb87
251      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
252                  of stress divergence for non-evp solver
253                  (this part is not tested anywhere)
254      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
255                  they were effectively only half slip
256                  affects lab_sea.hb87
257      updated all relevant verification experiments (except lab_sea//output_adm.txt
258        which was left over, but fails at level 7 & 6)
259    
260    checkpoint61j
261    o pkg/seaice: turn a few hard wired parameters into run time parameters
262    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
263      time in seconds as promised by the usints in seaice_monitor and exf_monitor
264    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
265      that are not cubed-sphere grids
266    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
267    o pkg/ctrl:
268      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
269    o non-hydrostatic (calc_gw.F):
270      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
271      update output of exp. global_ocean.cs32x15.viscA4
272    o remove backward compatibility for thetaMin,phiMin
273      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
274    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
275      interpolated wind field not only for curvilineargrid=.true., but also
276      for a rotated grid (rotateGrid=.true.)
277    o pkg/exf: add capability to bypass interpolation for runoff
278      by setting yet another CPP-flag
279    o eesupp/src, B-grid exchange:
280      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
281    o autodiff
282      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
283      allows to switch to single-prec common blocks;
284      corresponding switch occurs in tamc.h, integer isbyte
285      TAF store directivs "byte" and "kind" seem equivalent;
286      Most tamc.h have been updated correspondingly.
287    
288    checkpoint61i
289    o autodiff:
290      fix autodiff_sore/_restore indices for obcs
291      (spotted by I. Hoteit, M. Mazloff)
292    o pkg/autodiff, pkg/ctrl:
293      Add flag to reduce all tapelev I/O to single-prec.
294      In data.ctrl set
295        doSinglePrecTapelev = .TRUE.
296    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
297      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
298    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
299      real fresh water flux (not yet)
300    o pkg/mdsio & rw:
301     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
302     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
303    o pkg/flt:
304     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
305       init_fixed & ini_varia.
306     - clean-up & simplify linear interpolation S/R:
307       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
308     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
309     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
310     - add vert. coordinate & horiz. indices to output files.
311     - change vertical position in initial condition, from index to depth [m].
312     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
313       (easier to get to a curvilinear grid) ; delX,delY no longer used.
314    o pkg/ggl90: a few modifications:
315     - fix bottom boundary condition, and interpolation of KappaE
316       near top and bottom
317     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
318     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
319     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
320    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
321      (maintain temporary backward compatibility, until next checkpoint)
322    
323    checkpoint61h
324    o pkg/diagnostics with "periodic averaging diagnostics":
325      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
326    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
327    o pkg/obcs: fix loop ranges for balancing code
328    o pkg/flt:
329     - improve criteria for finding which tile owns a float.
330     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
331    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
332      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
333      with ocean biogeo)
334    o pkg/flt:
335     - do some cleaning and fix the restart ;
336     - add output.txt in flt_example/results to get this pkg tested.
337    o genmake2: add an EXTENDED_SRC option and flag.
338       for now, cannot be turned on on command line (only through genmake_local)
339    o pkg/mdsio: read/write vector:
340     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
341     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
342       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
343     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
344      (drop to 4 digits matching for grad). But this test does not look very
345      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
346    
347    checkpoint61g
348    o pkg/flt:
349      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
350       + make OPTIONS file more standard.
351      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
352      - fix _BYTESWAPIO CPP-Flag
353      - standard reading of file-parameter "data.flt"
354      - fix argument list of S/R FLT_RESTART
355      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
356    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
357    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
358      a still unfixed compiler/optimization bug
359    
360    checkpoint61f
361    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
362      update results of global_ocean.cs32x15.icedyn test.
363    o move getcon.F from model/src to pkg/fizhi.
364    o pkg/exf: add parameter for extrapolation of temp up to the surface
365       and option to prevent negative evap (in bulk_largeyeager04 only).
366    o Prather Advection scheme: fix tracer conservation for divergent flow
367      (e.g., when using NonLin Free-Surface).
368    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
369    o gmredi (Visbeck-variable-K):
370     - add more parameters to Visbeck-variable-K.
371     - use a 5 points average for dSigmaR in Visbeck-K calculation
372       (more "homogenous": same stencil and same weights as in dSigmaH)
373     - update output of ideal_2D_oce experiment.
374    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
375      (#undef REAL4_IS_SLOW)
376     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
377       coordinate variable
378     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
379       (surface forcing fields), removes some of the functionality
380     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
381     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
382       probably not all: copy _RS surface flux fields to RL field before
383       calling DIAGNOSTICS_FILL
384     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
385       real*4 (CALL EXCH_*_RS) versions.
386     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
387       (generate new output).
388    
389    checkpoint61e
390    o gmredi (Visbeck-variable-K):
391      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
392      - change computation of Visbeck-K where Slope > Smax :        
393        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
394        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
395    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
396      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
397    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
398    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
399      does not become too large (to avoid precision problems in implicit-diffusion
400      solver); update ideal_2D_oce output.
401    o pkg ggl90:
402      - in ggl90_cal.F: compute only one set of visc/diff, used to
403        step forward TKE/T/S/momentum
404      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
405        have Prandlt =1)
406    o gmredi (fm07):
407      - add lower limit on Transition layer thickness + lower limit on 1/lambda
408      - allow to set few more params from data.gmredi
409    o pkg ggl90:
410          - add missing sqrt(2) factor in computation of mixing length
411            scale in ggl90_calc.F
412            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
413    
414    checkpoint61d
415    o adjoint modifs
416      - adapt to new field rhoInSitu
417      - allow to revert from StoreDynVars2D, StoreDynVars3D
418        to individual fields
419        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
420    o store 3-D (in-situ) density in commom block (DYNVARS.h)
421     - save 1 rho computation.
422     - no longer modify T & S inland when using down_slope pkg.
423    o gad_som : allow to switch to SOM advection for T & S without corresponding
424      pickup files (using new S/R: MDS_CHECK4FILE).
425    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
426      (for useSingleCpuIO to work in multi-threaded)
427    o pkg/shelfice:
428     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
429       with SHELFICEtopoFile in data.shelfice
430     - move code for reading ice shelf topography and modifying hFacC into separate
431       subroutines of the shelfice package
432     - separate initialisation of "fixed" and "variable" variables
433     - kTopC is not (yet) replaced by kSurfC, although this is possible
434    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
435    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
436      and rename:
437      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
438      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
439    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
440    
441    checkpoint61c
442    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
443      to add mass source/sink of fluid in the interior (3-D generalisation
444      of oceanic real-fresh water flux).
445    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
446    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
447    o new pkg: down_slope
448      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
449      - presently, modify T & S inland (dwnslp_calc_rho.F).
450        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
451      - implementation for ocean in P-coords not tested.
452      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
453    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
454      (to facilitate conversion of oceanic pkg to p-coordinate).
455    o change FIND_RHO to FIND_RHO_2D :
456      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
457    o new pkg: cheapaml
458    
459    checkpoint61b
460    o exch2:
461      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
462      - no longer depend on the order sequence (N,S,E,W).
463      - 3rd exchange no longer needed (tested with 24 tiles).
464      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
465      - exch_UV_A-grid readily available (but not yet tested).
466      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
467      (both are no longer needed) in exch_uv: no effect in forward run; but
468       get truncation error differences with adjoint exch.
469    o exch2:
470     - change index-bounds storage (moved from target to local tile,
471       more intuitive this way) ; rename/remove some variables.
472     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
473    
474    checkpoint61a
475    o exch2/matlab-topology-generator:
476      fix bug in index bounds for N-S internal exchange (hard to tell if this
477      had any effect on the solution).
478    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
479      is exceeded
480    o testreport: modify syntax of awk, so that it works also with
481      awk, and not only with nawk and gawk
482    
483    checkpoint61
484    o autodiff
485      Change default for TAF usage by removing argument '-nonew_arg'
486      This changes TAF subroutine argument list (ordering of active var.)
487      Omission of this flag leads to incompatibility w.r.t. TAMC
488      To restore TAMC-compatibility, need following modifs:
489      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
490      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
491      Tested TAF version is 1.9.22
492      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
493    
494    checkpoint60
495    --->>> This is the last checkpoint for which generating the adjoint
496    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
497    --->>> by default.
498    --->>> Future checkpoints will ommit this flag by default.
499    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
500    o pkg/grdchk: Add gradient check to etan0 perturbations.
501    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
502    o pkg/autodiff: more flexibility in zeroadj.
503      model/src: modifying do_oceanic_phys.F accordingly.
504    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
505    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
506      special setup of gmredi for which the adjoint is stable
507      enough for parameter optimization.
508    o bridging the gap between eddy stress and GM.
509      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
510          along with a change in CPP option (now ALLOW_EDDYPSI).
511      -> when using GM w/ GM_AdvForm:
512          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
513          is applied either in the tracer Eq. or in momentum Eq.
514          depending on data.gmredi (intro. GM_InMomAsStress).
515      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
516      The key modifications are in model/src/taueddy_external_forcing.F
517      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
518    
519    checkpoint59r
520    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
521      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
522      fix option to read coriolis(@ cell-corner) from files with CS-grid.
523    o pkg/mnc: add some attributes to standard 1D-coordinate variables
524    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
525      mass points, when using mnc for output
526      - add runtime parameter (missing_value, missing_value_int) to override
527        default (which is the value of getcon('UNDEF'))
528    o pkg/mnc: prepare mnc for the actual use of missing values with the
529      diagnostics package: small fix in mnc_cw_readwrite.template and more
530      initialisation of never used fields
531      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
532      versions
533    o pkg/thsice/thsice_ini_vars.F added default initial values so that
534      thermodynamics sea ice solver does not blow up when some initial fields
535      are missing.
536    o move from external_forcing_surf.F to ini_forcing.F
537      the p-coord. hack consisting in using pLoad to set phi0surf ;
538      update output of tutorial_global_oce_in_p (affected @ truncation level).
539    o Freshen up a bit hs94.1x64x5, notably:
540      remove rotationPeriod and tRef=5*0. (adjoint only), and add
541      exactConserv=.TRUE.
542    o pkg/generic_advdiff:
543      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
544      applies to files where Temperature & Salinity 2nd Order moments are used.
545    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
546      this uses a dynamically allocated internal state data structure
547      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
548      and requires a fortran 90 compiler
549    
550    checkpoint59q
551    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
552       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
553    o Refresh tutorial_global_oce_biogeo, notably:
554      - change bathymetry (put back seamounts in ACC, use hFacs)
555      - change EOS (POLY3 --> JMD95Z)
556      - use Bryan-Lewis vertical diffusivity
557      - use multidimensional advection
558      - remove old virtual virtual in dic pkg, now done through ptracer pkg
559      - change a couple of parameters in dic pkg
560    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
561    o pkg/obcs: change default to OBCSfixTopo = .true.,
562      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
563      - replace "debugMode" with "debugLevel .GE. debLevB"
564    o implementation of TAF directives for gchem,cfc,dic
565    o remove "exp5" (replaced by tutorial_deep_convection).
566    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
567      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
568      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
569      --> changes results in exp4, seaice_obcs
570    o tutorial_deep_convection :
571      update the set-up and increase resolution and domain size ; start
572      from pseudo initial conditions = output at t=120mn in order to see
573      something happening when running testreport.
574    o pkg/seaice: add os7mp as an advection scheme
575                  add check for advection schemes
576                  add a flag for restoring T and S underneath sea ice
577    o pkg/my82: add netcdf-support and diagnostics
578    o thsice pkg:
579      - Now hsMax limits snow height by turning it into ice following
580        flooding scheme (and now conserving energy)
581      - Slight rewriting of the formula in thsice_calc_thick.F
582      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
583      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
584    
585    checkpoint59p
586    o gchem / dic / cfc :
587      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
588      - add new parameter files: "data.dic" & "data.cfc" ;
589      - various re-arrangement in initialisation & header file ;
590      - fix tutorial_global_oce_biogeo for multi-threaded test.
591    o pkg/dic: test for "pickup_dic" file when restarting ;
592      if no pickup-file, can restart with a re-initialised pH (same as it did
593      before) providing pickupStrictlyMatch is set to False.
594    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
595      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
596    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
597      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
598    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
599     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
600       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
601    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
602       scheme to use for vorticty-term ;
603     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
604       (with default selectVortScheme, return to original discretisation)
605     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
606    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
607    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
608      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
609      also fix diagnostics VISCAHW & VISCA4W.
610    
611    checkpoint59o
612    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
613    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
614      move a few statemens out the main loop into separate loops
615    o pkg/shelfice:
616      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
617        (kg/m^2/s), does not break tests, because in verification/isomip,
618        rhoConstFresh=rhoConst (by accident)
619      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
620      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
621        new file model/src/seawater.F, so that they are available for all pkgs.
622      - convert potential temperature into in-situ temperature. This changes the
623        isomip tests => update tests
624    o add a flag writePickupAtEnd (default=true) to be able to suppress
625      writing a pickup at the last timestep
626    o tools/mpack-1.6 :
627      - disable automake (not working) and autoconf (not needed).
628      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
629        also cleaner with much less compilation warnings.
630    o pkg/profiles:
631      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
632      (for "less than 32 characters name" compiler requirement)
633    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
634      conditions that have a different sampling frequency than S/T/U/V obcs
635    o pkg/diagnostics (stats-diags):
636      - fix global Min/Max in case 1 processor get only empty tiles
637    o genmake2: replace (4 times)
638         make genmake_tc_1.o >> genmake_warnings 2>&1
639      with
640         COMM="$CC $CFLAGS -c genmake_tc_1.c"
641         echo $COMM >> genmake_warnings
642         $COMM >> genmake_warnings 2>&1
643      to make genmake2 always see the value of CC as specified in the optfile.
644    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
645      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
646      - modify verification advect_cs test to test SOM-advection on CS-grid.
647    o pkg/ctrl:
648      - Rewrite of ctrl_map_ini_ecco.F,
649        introducing a generic routine (ctrl_map_ini_gen.F).
650      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
651    
652    checkpoint59n
653    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
654      number in dedicate array "hdiag":
655      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
656        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
657      - many small changes (integer format) for large number of diagnostics
658      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
659        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
660    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
661      usingSphericalGrid, this allows to define the rotated grid coordinates
662      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
663      geographical coordinates according to the inverse of the rotation defined
664      by the Euler angles, so that Coriolis parameter and online-interpolation by
665      exf works with the geographical coordinates on XC/YC/XG/YG.
666      Naturally, this feature does not work with all packages, so some
667      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
668      profiles), because there the coordinates are assumed to be regular
669      spherical grid coordinates.
670    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
671      - introduce isopycnal diffusion coefficient control.
672    o tools/adjoint_options:
673      - additional control vector components.
674    o pkg/mnc: have mnc create marginally meaning full coordinate variables
675      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
676    o pkg/mypackage:
677      - add example of read/write pickup for state-var ;
678      - add entry points to the main code for state-vars diags & write-pickup.
679    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
680      transitions for useExfYearlyFields
681      - add new subroutine that determines the file to read from for
682        use*YearlyFields = .TRUE. and .FALSE.
683      - add a verification experiment to global_with_exf that tests
684        useExfYearlyFields with USE_EXF_INTERPOLATION defined
685    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
686      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
687      subroutines (which could be generated from a template, because they are
688      almost identical), for now they are included in obcs_prescribe_read.F for
689      simplicity
690    o pkg/exf:
691      - add a little more diagnostic to exf_interp_read (in analogy to
692        mds_read_field, can be turned off with debugLevel < debugLevA=1)
693      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
694        ugly but fast by unrolling short inner loops, inserting a unroll=8
695        directive in routine lagran, and splitting a loop and making do while the
696        outermost loop (the latter requires the intoduction of index arrays)
697    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
698    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
699      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
700    o verification/seaice_obcs: updated for restart test and latest options
701    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
702      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
703      for now this is only available for the C-grid code and also within
704      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
705    
706    checkpoint59m
707    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
708      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
709    o gad_som : fix flux output (& diagnostics) to have same units as other  
710      advection scheme fluxes (was previously multiplied by deltaT).  
711    o added verification/seaice_obcs both to test seaice open boundaries
712      and to provide an example matlab scrpt for generating them
713    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
714    o pkg/salt_plume: clean up salt_plume_frac.F to
715      remove redundancy in PlumeMethod 1 and 4
716    o pkg/kpp: added saltplume diagnostics
717    o pkg/obcs and pkg/seaice:
718      - do not set uice and vice to zero when OB*icefile are unspecified
719      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
720      - moved seaice tracer obcs after call to seaice_growth
721    o pkg/salt_plume: added various options for salt plume depth
722      criterion and for vertical distribution of the salt
723    
724    checkpoint59l
725    o pkg/ptracers: new version of ptracers pickup:
726      read meta file and write only fields which are needed to restart.
727      ( same logic as main pickup file ; also using pickupStrictlyMatch )
728    o pkg/seaice:
729      - add timescale for melting due to warm mixed layer as a means of
730        setting SEAICE_availHeatFrac more conveniently
731      - add a CPP-flag/runtime parameter check for flooding algorithm
732      - reformulated availHeat in seaice_growth.F to be independent of AREA
733    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
734      unit changes
735    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
736    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
737      SX vector computer.
738    o pkg/seaice:
739      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
740        seaice forcing fields can now be read only through pkg/exf
741      - removed some unused halos
742    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
743    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
744      or U/VICE from U/VWIND before computing U/VSTRESS
745    
746    checkpoint59k
747    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
748      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
749    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
750      all experiments pass when compile with un-initialised var. checking option.
751    o added pkg/salt_plume
752    o script to test restart (for now, in MITgcm_contrib/jmc_script)
753    o pkg/seaice: new read/write pickup version.
754      read meta file and write only fields which are needed to restart.
755      ( same logic as main pickup file ; also using pickupStrictlyMatch )
756    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
757    o lab_sea.hb87: modify the domain & update output.hb87.txt :
758      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
759      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
760      process. Fixed here by closing the domain at the Northern boundary.
761    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
762    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
763      a set of consecutive levels in/from a 3-D array.
764    o pkg/ptracers:
765      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
766      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
767    
768    checkpoint59j
769    o in pkgs: dic, obcs, offline, rbcs:
770      standard way to compute coeff. for time interpolation between 2 time reccords
771      which retains full precision (& make results less dependent on compiler).
772      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
773    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
774      packages instead of reading ice cover and wind speed separately
775    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
776     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
777      to allow to compile customized code before the update)
778    o cleaning-up:
779      - fix CPP instruction syntax in pkg/obcs
780      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
781        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
782      - fix some threads issue in IO parts.
783    o pkg/dic:
784      - add tons of "_d 0" (--> much better testreports !)
785       and then update outputs of tutorial_global_oce_biogeo
786    o pkg/mom_fluxform:
787      add a special version of momentum advection intended to conserve momentum
788      next to a bathymetry step or a coastline edge. (default = off = #undef)
789    o new read/write pickup version:
790      - for now, only implemented for main (mdsio) pickup file.
791      - write out only what is needed to restart; merge pickup_nh , pickup_ph
792        and main pickup together.
793      - read meta file; read only what is needed to restart; stop if a field
794        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
795        if it make sense (even if the restart is not perfect).
796      - if no meta file, assume that pickup to read corresponds exactly to
797        a pickup that would currently be written.
798      - read pickup written in the old format (until checkpoint59i) if it
799        recognizes an old meta file (no field-list).
800      - add a meta file in exp. which starts from a pickup: 2 cases:
801        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
802         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
803        b) a meta file describing the content of the associated pickup file
804         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
805    o pkg/mdsio & pkg/rw:
806      - new routine to read a meta file ; new set of routine to read
807        Multiple-fields file (with meta file).
808    o added open boundary conditions capability for seaice
809        HSNOW, HSALT, UICE, and VICE
810    
811    checkpoint59i
812    o adjoint:
813      * fix multiDimAdvection adjoint
814        (partial recomputation problem by TAF for fVerT(:,:,kDown)
815        and comlev1 size definition (maxpass vs. max. number of tracers)
816      * verification/global_ocean.90x45x15 adjoint now tests
817        NLFS and multiDimAdvection using DST3 (=30)
818      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
819    o pkg/kpp: add "_d 0" to real constant (if missing);
820      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
821      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
822    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
823      for internal parameters related to restart process (formerly from PARAMS.h)
824      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
825    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
826      as argument. (only atm2d & obcs write_pickup have not yet been updated)
827    o pkg/monitor:
828      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
829      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
830      - account for deep Atmosphere factor and density factor (anelastic)
831    o added open boundary conditions capability for seaice HEFF and AREA
832    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
833      thermodynamics
834      - requires a little reorganization, which affects the testreport results
835        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
836        so that now the conservative form is tested
837      - add a few comments
838    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
839    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
840    o add new diagnostics to seaice: advective, diffusive fluxes (only for
841      multidim-advection, for scheme 2 they are not filled) and transports,
842      thermodynamic growth rates
843    o change units of EmPmR (inside the code, + within coupling interface)
844      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
845      Affects results @ truncation level (cg2d match) and update output of
846       experiments: lab_sea(6), global_ocean.90x40x15(10),
847      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
848      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
849      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
850      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
851    
852    checkpoint59h
853    o pkg/exf:
854      - improve vectorization by moving if-statement out of loops in
855        exf_mapfields, exf_radiation
856      - exf_bulkformulae.F: introduce 2D fields and vectorize code
857    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
858    o testreport:
859      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
860        monitor & update offline_exf_seaice exp. output.
861      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
862    o pkg/seaice:
863      - bug fix in the evp solver: boundary conditions were affected be
864        masking of zMax/zMin (changes results)
865      - minor bug fix in boundary conditions in seaice_calc_strainrates
866        (changes results for no_slip)
867      - seaice_lsr.F: make interpolation of eta dependent on boundaries
868      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
869      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
870        stress formulation and no-slip boundary conditions
871    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
872      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
873    o pkg/seaice: a first HSALT time stepping equation has been checked in
874    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
875      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
876      without requiring DO-IF statements
877    o pkg/thsice:
878      use continuous power-law function for partition of energy between lateral
879      melting/freezing and thinning/thickening ; old code using step function
880      still available with #undef THSICE_FRACEN_POWERLAW
881      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
882    o testreport: change AD testing : check against results/output_adm.txt
883      using same scripts as for forward test.
884    
885    checkpoint59g
886    o adjoint testing: in preparation for changing testreport:
887      - output format: cost and grad written on separated lines
888      - ad output results in directory "results" (instead of "results_ad")
889    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
890    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
891    o pkg/ecco: allow user defined cost function contributions
892    o testreport:
893      Allow to choose (per experiment) the list of tested output variables
894       and the main variable (used to issue a pass/FAIL ) ;
895      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
896      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
897      Also modify printing of summary:
898       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
899       b) echo the list of tested variables in the individual summary.txt of
900          each experiment.
901    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
902      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
903      (but still depend on the tile decompostion of the domain).
904    o pkg/seaice: change a discretization detail to make the B-grid code
905      "more symmetric". This change is likely to remove all "ridges/leads" that
906      where quasi-aligned with the grid in B-grid solutions. It may also be
907      the solution to the stress coupling issues with the B-grid.
908    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
909      remove .cvsignore from input dir. (since testreport no longer run here).
910    o pkg/thsice:
911     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
912     - fix reshaping of sea-ice just after advection:
913       melt all the ice only if ice-volume is too small.
914     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
915       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
916     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
917    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
918      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
919    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
920      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
921      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
922      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
923      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
924      -> update output.txt
925    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
926     this affects truncation error: -> update output.txt of exp:
927      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
928      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
929    
930    checkpoint59f
931    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
932    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
933      a bounded range (in forward mode)
934    o pkg/ecco, ctrl, autodiff and mom_common:
935     internal parameter controls, completements of implementations
936    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
937    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
938      (not seem any difference in testing results).
939    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
940       at face corners.
941    o pkg/generic_advdiff:
942     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
943      loop range indices for computing vertical advection tendency
944      and do the calculation in the interior only (no overlap) ;
945      for now, only implemented for SOM advection (to save CPU time).
946     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
947    o exch2 adjoint
948      First set of changes:
949      - add exch2 hand-written adjoint templates
950      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
951        This will require cleanup in pkg/autodiff/*.F
952        (changed routines currently kept separate in verif. code/)
953      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
954        that used to hide exch2 or cubed-sphere specific code
955        (commented via 'cph-exch2')
956    o pkg/seaice
957      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
958    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
959       output of global_ocean.cs32x15.thsice .
960    
961    checkpoint59e
962    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
963      for B-grid vector (not yet tested) and C-grid vector (<- only used
964      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
965    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
966      (#ifdef ALLOW_SALT_PLUME)
967    o gather_2d/scatter_2d: removed halo regions
968    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
969      scheme and the corresponding test case (under front_relax dir). For now,
970      only available with Skew-flux form and not yet tested in realistic set-up.
971      adjoint: store directives updated, but gradient checks deteriorated,
972      so maybe GM/Redi adjoint is now broken.
973    o seaice adjoint
974      * add AREA, HEFF, HSNOW as control variable
975        (should not change lab_sea results)
976      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
977    o pkg/seaice:
978      * added computation of saltFlux in seaice_growth;
979        For time being, sea ice salinity is assumed constant
980        contribution of snow flooding to freshening of sea ice is neglected.
981        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
982        defaults to 0.0 in order to maintain backward compatibility.
983        Typical values for SEAICE_salinity are 4 to 10 g/kg.
984      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
985      * added SEAICE_availHeatFrac, which specifies fraction of surface level
986        heat content used to melt or grow ice
987      * commented out cap of HICE: it helps keep ice thinner
988      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
989      * applied OBCS T/S mask to HEFFM sea ice mask
990    
991    checkpoint59d
992    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
993     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
994     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
995    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
996     and change default value of parameter "GM_Small_Number";
997     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
998       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
999       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1000    o pkg/ecco: cost function when applying pkg/smooth to controls
1001    o pkg/ctrl: add forcingPrecond run time parameter
1002    o pkg/seaice:
1003     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1004     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1005       changes verification/lab_sea
1006     - rearrange implicit part of u-equation in LSR solver to make it easier to
1007       read, understand, and debug. This causes changes at the truncation level.
1008     - fix (serious) bug in the boundary conditions (sign error in the implicit
1009       part) of the LSR solver. Changes all LSR results.
1010     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1011       is initilized with small values - does not change lab_sea results.
1012     - added HsnowFile initialization capability
1013    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1014     initialization of pkg/smooth and application to control vector
1015    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1016    o dependencies: pkg/profiles requires pkg/cal
1017    o pkg/profiles:
1018     - added option ALLOW_PROFILES_GENERICGRID
1019         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1020         that interpolation information (grid points and coefficients) is provided
1021         within the netcdf input files.
1022         -> sample matlab scripts can be found in MITgcm_contrib/gael
1023         that allow you to prepare netcdf input files.
1024     - also modified: cleaner include statements, cleaner error print statements,
1025       cleaner stops when error, and more tests of the netcdf input files consistency.
1026    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1027    o pkg/seaice:
1028     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1029       requires a new routine: seaice_diagnostics_fill.F
1030     - make sure that seaice does not move if not forced (pressure replacement
1031       method, Hibler and Ip, 1995), changes results
1032     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1033     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1034       It is turned off by default (=-1.), because it changes the results.
1035     - make it possible to read AREA from a file, too.
1036    
1037    checkpoint59c
1038    o add S/R and diagnostics for oceanic mixed-layer depth
1039    o move GMRedi call after all vertical mixing schemes (including KPP)
1040    o pkg/thsice:
1041     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1042      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1043    o pkg/obcs:
1044     - bug fix for balance code
1045    o pkg/seaice:
1046      - allow values of SEAICE_elasticParm > 1
1047      - add new parameter SEAICE_evpTauRelax as an alternative
1048        to SEAICE_elasticParm
1049      - make lsr boundary conditions free slip (by default), changes result
1050      - add code for no slip boundary conditions for lsr
1051      - set minimum of zeta to zero (and not 4e8) (changes results)
1052      - add a cap on AREA after advecting AREA if seaice_growth is not called
1053    o change calculation of Visbeck K:
1054      - no longer depend on tapering scheme; instead, compute slope (limited
1055        by GM_maxSlope). this is equivalent to what was comuted before with
1056        clipping or linear tappering.
1057      - fix vertical averaging (wrong by 1/2 level)
1058      - leave the old version (but will not be maintained) within
1059        #ifdef OLD_VISBECK_CALC / #endif
1060      - update output of exp. ideal_2D_oce
1061    o change error catch in calc_r_star to improve vectorization
1062    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1063      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1064    o adjoint:
1065      Re-organized adjoint checkpointing according to Matt Mazloff
1066      (but with modifs/completions/cleanups)
1067      Storing is now bundled into large arrays to optimized I/O
1068      (and second step in cleanup of the_main_loop)
1069    
1070    checkpoint59b
1071    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1072      - export/import (between ocean & coupler) fields needed for ocean DIC.
1073    o pkg/seaice:
1074      - get rid of three more exchanges seaice_calc_viscosities (required
1075        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1076      - bug fix in seaice_ocean_stress (update of lab_sea required)
1077      - reduce loop boundaries to necessary minimum also in seaice_evp
1078      - go back to the old way of computing deltaC/Z as the adjoint likes that
1079        better
1080    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1081      passive tracer to an Age Tracer) + update output.txt
1082    o pkg/exf:
1083      - implement A-grid / C-grid selection for wind-stress input files.
1084      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1085      for now, in exf_bulk_largeyeager04.F only :
1086      - change implementation for case where windspeed + 2. components wind-stress
1087        are read-in. AND use rhoConstFresh to convert evap.
1088    o pkg/seaice:
1089      - use correct EXCH_UV for wind-forcing (on A-grid).
1090      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1091        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1092    o pkg/exf:
1093      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1094      EXF_INTERPOLATION:
1095      - merge global_with_exf/code version of exf_interp_read.F
1096        to the main code ;
1097      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1098        reading the file ; Important: This options needs to be defined to recover
1099        previous code.
1100        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1101      - no longer loose real*8 precision along the way when using exf_iprec=64.
1102    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1103      - change discretisation of evp-solver in order to avoid another exchange
1104        (changes lab_sea) and clean up a little
1105      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1106        help the adjoint (this also changes the results slightly)
1107      - add a few "_d 0" where they had been missing in seaice_evp.F
1108      - cleaning up: remove unused seaice_calc_rhs.F
1109    o pkg/exf: some cleaning-up:
1110      - change various "constants" into runtime parameters
1111      - cleaned-up Large&Yeager04 routine which should eventually
1112        replace exf_bulkformulae.F (changed names of S/R and CPP)
1113        and merged various ALLOW_ATM_WIND options
1114     only used with thsice pkg (in thsice_get_exf.F):
1115      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1116        which are used when useStabilityFct_overIce=TRUE (= the default)
1117      - change default values of ice & snow emissivity and scale downward LW
1118        by ice & snow emissivity.
1119    o pkg/thsice:
1120     fix few little problems, in thsice_calc_thickn.F:
1121      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1122      - melt only laterally if hIce < hThinIce (as the comments say)
1123      and in thsice_extend.F:
1124      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1125      - start to form ice as soon as the minimum ice-volume is reachable.
1126     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1127      and cpl_aim+ocn
1128    o pkg/kpp
1129     - move computation of surface related input fields to KPP into a new
1130       subroutine kpp_forcing_surf.F
1131     - remove wrong (within bi,bj loops) EXCH calls.
1132     - little cleaning (add argument myThid in last position, cvs header ...)
1133     - for now, fix conservation problem by exchanging KPPviscAz (may not
1134       be the best fix)
1135    o pkg/seaice
1136     - check for inconsistent evp parameter/cpp-flag combination
1137     - remove leftover errIO flat for obsolete name list error handling
1138    o OpenAD
1139     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1140    
1141    checkpoint59a
1142    o pkg/seaice: some parameter clarifications and a little bit of clean up
1143    o pkg/thsice: rename run-time parameters:
1144       himin       -> hIceMin
1145       himin0      -> hThinIce
1146       hihig       -> hThickIce
1147       i0          -> i0swFrac
1148       transCoef   -> bMeltCoef
1149       frac_energy -> fracMelting
1150      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1151       with default values (for now) that do not change the results.
1152      remove old version of thsice vars advection in pkg/seaice.
1153    o in FFIELDS.h:
1154      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1155      - make pLoad & sIceLoad always available (but still only used if
1156         ATMOSPHERIC_LOADING is #define).
1157    o pkg/kpp: replaced _KPP_RL with _RL
1158    o bug fixes for vertical diffusivity computations when both KPP and
1159        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1160        are no longer updating the vertical diffusivity array
1161        (passed as argument) but are (re-) setting those arrays.
1162    o pkg/seaice: fix bug in evp solver, while doing that
1163      - change (improve?) discretization of stress computations for both
1164        cgrid-lsr and evp solver
1165      - add a new routine to compute strain rates
1166      - the above changes lab_sea results
1167      - add no slip conditions for evp solver (off by default), lsr-version
1168        may follow
1169      - fix exchange for shear at Z-points (does not change lab_sea)
1170      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1171        (to force the user to pick a time step since there is not "safe" way
1172        of choosing it)
1173      - add principal stress diagnostics
1174      - rearrange fields for evp a little to avoid having to call a: too many
1175        exchanges and b: exchanges for stress trensor components which we do
1176        not have.
1177      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1178        of evp, complete rewrite for lsr case (latter is does not yet work
1179        in all cases)
1180    o pkg/kpp: add code to have mixing in shelf ice caverns
1181      - add myThid to all kpp routines (long overdue)
1182    
1183    checkpoint59
1184    o pkg/exf:
1185      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1186        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1187      - move exf header files from lower_case.h to UPPER_CASE.h ;
1188        add missing cvs Header & Name
1189      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1190      - add namelist param. selectStressGridPosition, exf_monFreq
1191      - retire many _CLIM routines, and remove data.exf_clim
1192        + params moved to data.exf
1193        + climsst, climsss now handled by exf_set_gen, i.e.
1194          climss?period=0 refers to constant field,
1195          climss?period=-12 to monthly forcing
1196      - split up namelists in data.exf
1197    o pkg/seaice:
1198      - remove seaice_exch and seaice_exch_uv
1199      - remove superfluous exchange of theta
1200      - add myThid to seaice_budget_ocean/ice
1201      - add new interface for atmospheric wind forcing (C-grid only)
1202        + new routine
1203        + two new field (taux, tauy for stress over ice)
1204        + removed one global field (DAIRN) for C-grid case only
1205    o pkg/thsise
1206      - 2nd set of modifs for thsice adjoint in conjunction with exf
1207    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1208    
1209    checkpoint58y_post
1210    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1211      vertical diffusivity, similar to that in MOM4; turned on using
1212      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1213      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1214    o Added capability for 3D specification of background vertical diffusion
1215      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1216      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1217      "data" file that contains the 3D vertical diffusivity coefficients.
1218    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1219      - add code within pkg thsice to advect & diffuse sea-ice fields
1220      similar to (and will replace) what has been added in  seaice_advdiff.F,
1221      but: - conserving Mass, Heat & Salt.
1222           - better when using non-linear advection scheme (not yet fully tested)
1223           - can also be used in atmospheric set-up (for now, only the diffusion).
1224    
1225    checkpoint58x_post
1226    o IO option for global-file compact format:
1227      - add options when generating topology (utils/exch2/matlab-topology-generator)
1228      - add I/O capability (pkg/mdsio).
1229      - adapt utils/matlab/rdmds.m to read this format.
1230      for now long-line format not yet supported by pkg/mdsio (& exch2).
1231    o shelfice: add a few diagnostics
1232    
1233    checkpoint58w_post
1234    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1235      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1236      (and replace horiVertRatio in NH code).
1237      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1238                         and tutorial_plume_on_slope (sensitive to truncation)
1239    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1240      directly to drive seaice model (C-grid only)
1241    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1242     - reintroduce computation of wind from stress,
1243     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1244       mass points to avoid tau = 0
1245     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1246    o rdmnc.m: make it work with "global" files created with gluemnc
1247    o rdmnc.m : some improvements in dealing with singleton dimension
1248      (tested on all testreport mnc output files).
1249    o genmake2: disable pkg/profiles if netcdf test fails.
1250    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1251    o move call to cal_readparms up to make calendar parameters/variable available
1252      to all packages
1253    
1254    checkpoint58v_post
1255    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1256      useDynP_inEos_Zc tested.
1257    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1258    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1259      and portions thereof.  See read_cs.txt for description and examples.
1260    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1261      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1262      following the great-circle arc between those 2 points.
1263    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1264      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1265    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1266     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1267     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1268     - still needs work (not working with some options ; efficiency to improve)
1269       and serious testing.
1270     - use this scheme for temperature & salinity in 2 advection test exp.:
1271       advect_xy & advect_xz, respectively.
1272    
1273    checkpoint58u_post
1274    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1275    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1276    o testreport: add option "-skipdir" to skip some test.
1277    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1278      momentum calculation.
1279    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1280    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1281      remove checkpoint.F and the_correction_step.F (no longer used);
1282      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1283    o add option (linFSConserveTr) to correct for tracer source/sink due to
1284      Linear Free surface
1285    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1286    o pkg/thsice: fix reading mnc-pickups
1287    
1288    checkpoint58t_post
1289    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1290    o pkg/mdsio:
1291     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1292       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1293       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1294     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1295     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1296       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1297     - new S/R (to replace MDSWRITEMETA), which allows to write more
1298       informations (variable names, time ...) to meta files.
1299     - modify rdmds.m to give back the meta file content.
1300    o pkg/diagnostics: change vertical interpolation to be safer, and more
1301       flexible (define p-levels to interpolate to in data.diagnostics);
1302      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1303       diagnostic pointer.
1304    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1305    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1306    o fix multi-category seaice:
1307     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1308       SEAICE_MULTICATEGORY
1309     - fix short wave heat flux
1310    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1311       and allow to use EVP solver. Change forward lab_sea: test both EVP
1312       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1313    o Initial check-in of lab_sea adjoint
1314      (very similar to natl_box_adjoint/code_seaice)
1315      * used C-grid and EVP solver
1316      * used KPP, GM/Redi
1317      * uses inAdExact=.TRUE.
1318      * gradient checks fail for both ADM and TLM
1319        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1320        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1321        issue is related to forward mismatch between g77 an ifort
1322    o pkg/seaice: overhaul of thermodynamics
1323     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1324     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1325     - move a few global fields out of SEAICE.h into seaice_growth.F and
1326       make them 2D (FICE/QNETO/ ...)
1327     - remove FO (it is the same as QNETO)
1328     - introduce a few local fields to avoid modifying external fields such
1329       as atemp, etc.
1330    
1331    checkpoint58s_post
1332    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1333      changed exf_set_gen.F so that
1334        genperiod=0 means input file is one time-constant field and
1335        genperiod=-12 means input file contains 12 monthly means
1336    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1337      this affects truncation error ; generate new output file for exp. which
1338      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1339        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1340        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1341        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1342        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1343        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1344    o start implementation of deep-atmosphere and anelastic formulation
1345    o verification: remove 2nd copy of input files and use script "prepare_run"
1346      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1347    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1348    o profiles: fix for multithreaded case
1349    
1350    o diagnostics: rename few diags:
1351      s/'PRESSURE'/'RCENTER '/g
1352      s/'TICE    '/'oceFreez'/g
1353      s/'TAUX    '/'oceTAUX '/g
1354      s/'TAUY    '/'oceTAUY '/g
1355      s/'SWFLUX  '/'oceQsw  '/g
1356      s/DIFx/DFxE/g
1357      s/DIFy/DFyE/g
1358      and add few ocean-forcing diagnostics:
1359      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1360    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1361      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1362      as actual snow thickness.  It now refers everywhere to effective snow
1363      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1364    
1365    checkpoint58r_post
1366    o modifications to pkg/seaice/growth.F, which change results of
1367      lab_sea experiment: fixes pertain to melting snow over open water, to
1368      masking EVAP under sea ice, and to using the correct AREA variable for
1369      computations of EVAP, PRECIP, HSNOW, and GHEFF
1370    o add ability to read bathy, salt, and theta using MNC (off by def)
1371    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1372      both are turned off by default and do no change any results
1373    o seaice advection with pkg/thsice: a step toward the use of non-linear
1374      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1375    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1376      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1377      in natl_box (affects results @ truncation level: update output.txt)
1378    o multi-threading and IO:
1379      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1380      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1381        (needed to work with SingleCpuIO): tested in all verif. exp.
1382    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1383      affects the results (but none of the verification test uses this scheme).
1384    o Adding some pkg/diagnostics capability to pkg/seaice
1385      (will certainly be subject to changes)
1386    o ctrl: adding new control variables:
1387      lwflux, lwdown, evap, snowprecip, apressure, runoff
1388    
1389    checkpoint58q_post
1390    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1391      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1392      high_res_cube configuration by 4% on Columbia.
1393    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1394      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1395      dynamical allocation (seems to work in multi-threaded).
1396    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1397      single CPU io) so that TAF does not have to see EESUPPORT.h
1398    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1399    
1400    checkpoint58p_post
1401    o obcs: stop if obcs is used with useCDscheme = .true.
1402    o shelfice:
1403     - fix a sign error so that no slip at shelfice interface works
1404     - remove stop for combination non-hydrostatic code and shelfice. That does
1405       not mean, that the results are correct, but at least they are numerically
1406       stable
1407    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1408    o added adjoint exch routined for all exch*3d* routines
1409      and updated flow directives
1410    
1411    checkpoint58o_post
1412    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1413      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1414    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1415      and clean-up reading/writing of pickup files.
1416    o fix local version of read/write pickup (NH part) in rotating_tank/code
1417    o simplify EXCH interface:
1418     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1419     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1420    o added the regrid package
1421    o shelfice:
1422     - add a simple boundary layer scheme to reduce noise
1423     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1424    
1425    checkpoint58n_post
1426    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1427       local variable (not in common block).
1428    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1429      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1430      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1431        to work with SingleCpuIO.
1432    o add "_d 0" to real constant of pkg/cfc subroutines ;
1433       update exp. cfc_exemple & tutorial_cfc_offline output files.
1434    o multi-threading and IO:
1435      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1436        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1437      - barrier before and after reading.
1438      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1439      - avoid using MDS_WRITELOCAL for LAND pkg output.
1440      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1441        common-block variables ; Allows multi-threading with master-thread IO.
1442    o change default MAX_NO_THREADS from 32 to 4 ;
1443      and stop cleanly when MAX_NO_THREADS is too small.
1444    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1445    
1446    checkpoint58m_post
1447    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1448       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1449    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1450       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1451       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1452    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1453        add MITgcm_tutorials (= code + all the tutorials)
1454    o ecco, option to compute cost for total ssh (mean+anom)
1455    o consistent with addition of ptracer and ssh in pkg/profiles
1456    o profiles: adding ptracer and ssh
1457    o testreport: change multi-test output-file name
1458      (from output.txt.{name} to output.{name}.txt)
1459    o profiles: now ok for mutli-tiles case
1460    o seaice: add 4 parameters for different advection schemes for area,
1461      (effective) seaice thickness, enthalphy, and snow height. Their default
1462      is the standard parameter SEAICEadvScheme
1463    o calc_gw:
1464     - add cosFacU in zonal viscous flux (harmonic.visc.).
1465     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1466       of tutorial_plume_on_slope.
1467    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1468    o calc_gw: true flux-form, account for horizontal grid spacing.
1469      update rotating_tank results, but not plume_on_slope (affected at
1470      truncation level, 11 digits).
1471    
1472    checkpoint58l_post
1473    o calc_gw:
1474     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1475     - remove side-drag for now (need to fix it); update plume_on_slope results.
1476     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1477    o commit code to make SST/SSS weights spatially variable
1478      (based on either variable in-situ or variable initial T/S weights)
1479    o pkg/ecco:
1480      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1481        now based on horizontally varying weights wthetaLev, wsaltLev
1482      * cost_averagesflags now returns year indices in addition to day, month
1483      * sflux balance is performed on annual basis
1484        (sflxumm, sfluxmm2, bal_sfluxmm)
1485      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1486        including separate counting and multipliers
1487    o pkg/rbcs
1488      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1489    
1490    checkpoint58k_post
1491    o testreport:
1492     - always build in dir. "build" (if not there, mkdir build instead of building
1493       & running in input)
1494     - run in dir run (if it exists), in build otherwise.
1495     - call prepare_run (if input/prepare_run exists)
1496     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1497    o pkg/exf modifications to interpolation and rotation routines for more
1498       reasonable treatment of North Pole singularity: for tracers North Pole
1499       value is set to northernmost zonal-mean value, for zonal velocity it is
1500       set to zero, and for meridional velocity it is set to northernmost value.
1501    o pkg/exf/exf_check_range.F
1502     - add tile index to diagnostics and move stop statement to the very
1503       end of the routine.
1504    o pkg/diagnostics: (diagnostics_main_init.F)
1505      define title of isomorphic variables according to the current config.
1506    o pkg/thsice with pkg/seaice dynamics:
1507    - fix domain of computation (interior only, required for exf) and do exchanges
1508    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1509    o towards a standard way of dealing with multi-threading in MONITOR
1510      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1511    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1512       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1513    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1514    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1515    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1516       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1517    o tracer advection:
1518     - clean-up and simplify calc_common_factors.F
1519     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1520       advection subroutine (but still not used within DST advection S/R)
1521    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1522    
1523    checkpoint58j_post
1524    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1525      from file (collects calls previously in FORWARD_STEP)
1526    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1527    o adjoint store dir. adjusted accordingly
1528    o genmake2
1529      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1530    
1531    checkpoint58i_post
1532    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1533      on wind stress (SEAICEstressFactor defaults to 1.)
1534    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1535      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1536    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1537      on CS-grid: no longer loosing mass.
1538    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1539    o pkg/ggl90: fix sloppy output and fix a bug
1540    o pkg/seaice: added SEAICEuseEVPpickup parameter
1541      - Set to false in order to start EVP solver with
1542        non-EVP pickup files when using SEAICEuseEVP
1543      - fix sign error in diffusion in seaice_calc_rhs
1544    
1545    checkpoint58h_post
1546    * Modifications for bottom topography control
1547      o replace hFacC by _hFacC at various places
1548      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1549      o add non-self-adjoint cg2d_nsa
1550      o update autodiff support routines
1551      o re-initialise hfac after ctrl_depth_ini
1552      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1553    * Adding verification for 5x5 box (4-layer) bottom topography control
1554    
1555    checkpoint58g_post
1556    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1557       used for mean seasonal cycle, mean diurnal cycle); add an example
1558       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1559    o pkg/ggl90:
1560      - add parameter (minimum surface kinetic energy)
1561      - fix bug (avoiding division by zero)
1562    o couple pkg/thsice to pkg/seaice:
1563      - modify advection in seaice to accomodate new scalar fields to be advected
1564      - only muliDimAdection scheme work with seaice/thsice
1565      - mapping of thsice-variables to seaice-variables, back and forth
1566      - does not break the verification experiments, but does not give the
1567        desired results either
1568    o pkg/seaice
1569      - make (default) second order advection a bit less confusing?
1570    
1571    checkpoint58f_post
1572    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1573      to pkg/seaice):
1574      - new routines thsice_map_exf and thsice_get_exf provide the interface
1575      - add an additional formal parameter to thsice_solve4temp
1576    o pkg/exf:
1577      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1578      - correct Stefan-Boltzmann constant
1579      - new parameter for longwave surface emittance
1580      - separate some stuff from exf_bulkformulae into new routines  
1581        exf_radiation, exf_wind
1582      - add new parameters and constants: longwave emissivity for ocean, ice
1583        and snow, evaporation parameters over ice
1584      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1585        either wind from stress or stress from wind
1586    o pkg/thSIce:
1587    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1588    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1589       and THSICE_CALC_THICKN
1590    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1591    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1592      to make debugging easier.
1593    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1594    o pkg/bulk_force:
1595      - clean-up comments and parameters ;
1596      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1597    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1598      generate new output for test-experiment: aim.5l_cs.thSI
1599    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1600      testreport accordingly
1601    
1602    checkpoint58e_post
1603    o SEAICE_CGRID adjoint done
1604    o R_STAR adjoint implemented.
1605      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1606      * need to sort out init. of h0facc, etc.
1607    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1608      to be able to use it in pure forward.
1609    
1610    checkpoint58d_post
1611    o upgrade simple test-experiment to tutorial example:
1612     step.1: duplicate the experiment and (step.2) will remove the old copy.
1613      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1614      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1615      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1616      tutorial_global_oce_biogeo    <- copy of dic_example
1617      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1618      tutorial_plume_on_slope       <- copy of plume_on_slope
1619      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1620      tutorial_global_oce_optim     <- empty for now (David ?)
1621      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1622     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1623    o correct a sign problem in cost_scat.F
1624    o obcs and ptracers: fix boundary conditions for advections schemes
1625      with larger stencil
1626    o thsice adjoint: start
1627    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1628      completeness
1629    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1630      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1631    o ptracers adjoint:
1632      * avoid extensive recomputatations
1633      * fix missing re-init. of gptr (missed by TAF)
1634    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1635      me to turn off the excessive output to STDOUT that this package produces
1636    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1637      and add those terms in Vector-Invariant formulation.
1638    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1639      if the control period (xx_hfluxperiod etc) is 0
1640    o in profiles pkg, clean routines and fix details
1641    o in ecco pkg, reading ssh data:
1642      fix problem in case the model does not start at iter0=0
1643    o fix mnc-pickup/restart for ptracers
1644    o new package prifiles:
1645      code to compute profile-based cost by Gael Forget
1646      (modifs in ecco, ctrl, autodiff)
1647    o Benign bug fix in initialization (spotted by M. Mazloff) of
1648      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1649    
1650    checkpoint58c_post
1651    o adjoint: finish NLFS adjoint and provide reference output in
1652      verification/global_ocean.90x40x15/results_ad_nlfs
1653    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1654      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1655      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1656      with SEAICE_CGRID defined.
1657    o move calendarDumps from "data" to "data.cal" and clean-up the code
1658      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1659    o add useEXF & useCAL flags (for now, set in hard-coded way)
1660    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1661      (were missing in NH mode, and wrong in quasihydrostatic mode).
1662      waiting for Chris updated version of calc_gw to add those CALLs.
1663    o fix bug in quasihydrostatic S/R ;
1664      add a test for this option: global_ocean.90x40x15.qshyd
1665    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1666      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1667    o add on/off flag useOffLine for package OFFLINE
1668    o seaice:
1669      - modify advection so that it works also on the C-grid
1670      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1671        problem in multi-tile runs with C-grid
1672      - add flags for clipping ice velocities and/or masking solver forcing
1673      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1674        C-grid solver
1675      - added a few comments to seaice_diffusion.F
1676      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1677        are now exclusive)
1678      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1679        required re-ordering the code a little:
1680       + make DAIRN global variable (defined in SEAICE)
1681       + move computation of the viscosities eta and zeta into a new separate
1682         routine (because I need to recompute them in seaice_ocean_stress.F)
1683    
1684    checkpoint58b_post
1685    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1686      update output.txt of exp. aim.5l_cs.thSI
1687    o various mnc cleanups and improvements:
1688      + shrink lookup tables by factor of ~4
1689      + better error reporting when running out of lookup space
1690      + able to handle longer path/file names (up to 500 chars)
1691    o adjoint:
1692      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1693      - TBD: "hidden" mom_vecinv recomp. in dynamics
1694    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1695     (allow to differentiate between forcing components using new integer flags:
1696      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1697     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1698    o ecco
1699      - enable trend removal from SSH anomaly obs.
1700    o adjoint
1701      - a fix for PmEpR when #undef EXACT_CONSERV
1702      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1703      - try to fix "hidden" recomp. in forward_step for NLFS
1704        (NLFS seems broken sometimes after I checked it in)
1705    o seaice:
1706     - add c-grid version of the dynamic solver:
1707       + three new routines that are the c-grid substitute lsr, dynsolver
1708         and ostres
1709       + put a few fields that were local to dynsolver into global common
1710         blocks, so that I can move the computation of stresses etc into
1711         seaice_lsr (saves coding but may break the adjoint).
1712     - replace more hardwired parameters by runtime parameters
1713     - add ice masks that mask the rhs of the implicit solvers where there
1714       is no ice (commented out in seaice_dynsolver, because i am not sure
1715       if this works properly), eventually this should replace the clipping
1716       of ice velocities in seaice_dynsolver to +/-40cm/s.
1717    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1718      include it only where its needed
1719    o move balancing of fluxes before the call of external_forcing_surf
1720    o seaice:
1721      - correct units of turning angles (now they are really in degrees)
1722      - move computation of GWATX/Y out of main routine into dynsolver
1723      - initialize GWATX/Y in seaice_init
1724    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1725      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1726    o seaice: add runtime flags for turning angles (default to zero)
1727    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1728      and trend from exf forcing and ctrl control adjustments
1729    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1730      (since checkpoint57x_post)
1731    o change the default rotation period to 86164.s = the Earth rotation
1732    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1733      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1734    o seaice advection: add code for choosing between the default (2nd order
1735      central differences) and multiDim advection schemes provided by
1736      pkg/generic_advdiff
1737    o seaice:
1738      - removed all references to SEAICE_GRID.h fields from
1739        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1740        (cubed-sphere configuration will change a little)
1741      - grid computations in seaice_init are obsolete now.
1742      - cleaned up code a little so that is easier to read (hopefully).
1743      - added new (better?) discretizations of default advection and diffusion
1744        (turn on with SEAICEuseFluxForm)
1745      - replace 1 in 3d global fields by kSurface in growth.F
1746      
1747    checkpoint58a_post
1748    o seaice:
1749      - bug fix in advect.F
1750    o shelfice:
1751      - separate shelfice load anomaly from pload (breaks with time
1752        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1753        Its default is 0., but it may be computed more cleverly from (unknown)
1754        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1755        done offline. A good approximation of the pressure load anomaly is
1756        necessary to avoid large initial adjustment processes underneath
1757        deep-reaching shelfice.
1758      - small fix in ISOMIP shelfice_thermodynamics
1759      - add more sophisticated thermodynamics of Hellmer (1989), this is
1760        now the default
1761      - give a few constants more intuitive names
1762    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1763      if bulk formulae are used in long integration (especially EmPmR). Turn
1764      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1765      if balancePrintMean, the imbalance that is substracted is printed to
1766      STDOUT.
1767    o fix bug (typo) in obcs_apply_eta.F
1768    o add a new package shelfice which enables us to model the circulation
1769      underneath shelf-ice with draughts of hundreds of meters.
1770     - works
1771     - to do: + include improved thermodynamics
1772              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1773                instead of new field kTopC
1774              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1775                instead of new field R_shelfIce and new code in ini_depth.F
1776                and ini_mask_etc.F?
1777              + adjust vertical mixing schemes?
1778    o seaice pkg:
1779     - add a cpp-flag to include a simple formula for a salinity dependent
1780       freezing point of sea water at the surface
1781     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1782       meridional stresses are now different (and hopefully correct)
1783    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1784       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1785       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1786    o pkg/diagnostics: add options and parameters for regional-statistics
1787       diagnostics ; define regions by reading a region-mask from a file
1788       (might add other options later)
1789    o pkg/bulk_force:
1790     - add option and parameters to use AIM surface-flux formulae.
1791     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1792       others forcing fields (defined in PARM05, parameter file "data") are loaded
1793       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1794     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1795     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1796     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1797       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1798     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1799    
1800    checkpoint58
1801    o add "--embed-source" option to genmake2 which, when the supporting
1802      tools can be compiled (as determined by genmake2) will turn on the
1803      embed_files package which then embeds the entire MITgcm source code
1804      (*.[fFhc] + Makefile) used for the build within the executable
1805      - requested by CNH but off by default
1806      - adds a paltry <9MB to the mitgcmuv executable in most cases
1807      - only writes the output when useEMBEDSRC in eedata is true
1808    o clean up 3-dim. relaxation codes:
1809      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1810      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1811      * Thanks to Tom Haine for testing!
1812    
1813    checkpoint57z_post
1814    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1815      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1816    o fix the pickup behavior for obcs in combination with ptracers
1817    o fix a bug in ptracers_external_fields_load
1818    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1819      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1820    o transfered surface NH pressure to eta field (if exactConserv).
1821    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1822         and update lab_sea output.txt file.
1823    o completing 3-dim. relaxation code: additional term
1824         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1825      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1826      * At compile time, in "EXF_OPTIONS.h" set
1827          #define  ALLOW_CLIMTEMP_RELAXATION
1828          #define  ALLOW_CLIMSALT_RELAXATION
1829      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1830          tauThetaClimRelax3Dim = 15552000.0,
1831          tauSaltClimRelax3Dim  = 15552000.0,
1832      * 3 cases:
1833          1) Use a constant-in-time 3-dim. field
1834          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1835          3) Real-time relax. to time-evolving prescribed field
1836    o Adding Laplacian-type smoothness constraint on
1837      initial and boundary (forcing) controls (ic, bc)
1838      * enable at compile-time via
1839        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1840      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1841      * Absolute scale somewhat unclear so far
1842      * no area weighting was included since no other cost term does so far
1843    
1844    checkpoint57y_post
1845    First step for a NLFS adjoint
1846    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1847    o new init. routines for calc_r_star, calc_surf_dr
1848    o still need to deal with ini_masks_etc
1849    o testreport seemed happy
1850    checkpoint57y_pre
1851    
1852    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1853    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1854    o add new offset feature to offline pkg (plus minor cleanup)
1855    o cfc fixes for final year of integration
1856    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1857      be in GCHEM_OPTIONS).
1858    
1859    checkpoint57x_post
1860    o fix testreport Pb in multiple test experiment.
1861    o cleanup our namelist syntax in verification:
1862      - make it more F95 standards compliant (some work still needed)
1863      - allows the vast majority of our tests to work with gfortran
1864    o Non-Hydrostatic:
1865     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1866     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1867    o Allow to apply AB on T,S rather than on AB(gT,gS):
1868     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1869     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1870       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1871     - need a "clever" read_pickup to restart from the other AB formulation
1872    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1873    o remove some unused variables (reduces number of compiler warnings)
1874    o adjoint
1875      * Disable useVariableViscosity for adjoint for time being
1876        (there are a number of extensive recomputations)
1877      * Initialize certain variables needed for adjoint
1878    
1879    checkpoint57w_post
1880    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1881                 fix the singleCpuIO RS version of MDSWRITEFIELD
1882       and add a WARNING if using globalFiles=T with multi-processors.
1883    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1884      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1885    o tracer advection scheme:
1886      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1887       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1888       was not very convenient).
1889      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1890       (further tests needed for the implicit DST & Flux-Limiter schemes).
1891    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1892      and sRef for convenience, handy, when you want to initialize
1893      ptracers in a large domain with a constant non-zero value. Also,
1894      untangle ptracers_init.F a little.
1895    
1896    checkpoint57v_post
1897    o change dome exp. to use variable viscosity in side-drag terms.
1898    o remove all the files from the cfc_offline test since they are now
1899      incorporated into tutorial_cfc_offline which has been producing
1900      identical results for a few days of testing
1901    o add new parameter: sideDragFactor to enable half-slip-side BC
1902      and change side-drag S/R to use viscosity from mom_calc_visc
1903      (can switch back by setting sideDragFactor=0.); affects results at
1904      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1905       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1906    o vorticity & strain are now computed without masking, to account for
1907      no-slip-side BC in variable viscosity calculation ; mask is applied
1908      anyway later on, before computing advection/coriolis terms.
1909    o modify exp4 to test new obcs support for reading from external files
1910      and for passive tracers
1911    o fix behavior of ptracers_monitor when monitor output is written to a
1912      netcdf-file; still not independent of monitor.F (writes in the same
1913      file).
1914    o change default value of tRef (put a uniform, meaningful value for ocean
1915      & atmos) and initialize sRef (was missing, as Martin mentioned).
1916    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1917      to be proportional to enstrophy dissipation length.  Thus,
1918       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1919      This is now consistent with Smagorinsky and with the manual.
1920    
1921    checkpoint57u_post
1922    o OBCS and PTRACERS: add open boundary support for passive tracers
1923      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1924        OB-values from file; this is not different from the way theta and salinity
1925        are treated
1926      - however, Orlanski-radiation conditions are not supported, and the model
1927        will stop if you use pTracers and Orlanski at the same time.
1928      - beefed up the rountine obcs_external_fields_load: now only those open
1929        boundary values are overwritten with values from files for which there
1930        are really files, otherwise the OB-fields remain untouched. This makes
1931        it possible to use different OBs at different ends of the domain (as
1932        with EXF)
1933    o reduce number of exch calls in shap_filt (s2).
1934    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1935      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1936    
1937    checkpoint57t_post
1938    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1939    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1940      same truncation, independent of the face number: affects affects several
1941      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1942    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1943      note that biharmonic viscosity + no-slip was not tested in any experiment.
1944    o fix bug in non-linear free-surf side-drag ; generate new output for
1945      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1946    o make mnc honor the writeBinaryPrec flag for most kinds of output
1947    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1948    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1949      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1950    o add brackets in multi-terms sum to get same truncation, independent of
1951      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1952      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1953    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1954      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1955      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1956      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1957      Suggested values of viscosity parameters found in mom_calc_visc.
1958      Many new viscosity diagnostics available.
1959    
1960    checkpoint57s_post
1961    o Add clearing-house for viscosity calculations, mom_calc_visc and
1962      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1963      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1964      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1965      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1966      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1967      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1968      ViscAhStrain and viscAhTension are now retired.
1969    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1970    o In response to JMC's bug report, genmake2 now ignores any soft-links
1971      that it finds in the *current* directory when searching for files.
1972      Soft-links found in any other source directories will still work as
1973      they did before.
1974    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1975      a C routine to unlimit the stack size
1976    o mnc-ify pkg/aim snapshot vars
1977    o mnc-ify pkg/land as requested by Daniel
1978    o various changes to mnc including:
1979      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1980      - output can now be grouped so that all files within a group
1981          change the ITER portion of their names in lock-step together
1982      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1983          and works with both EXCH1 and EXCH2 (but needs more testing)
1984      - writing works for all verification test cases w/ g77 on Linux
1985    
1986    checkpoint57r_post
1987    o make MNC variable initialization happen earlier
1988    o add diagnostics for (almost) each term of the momentum Eq.
1989    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1990    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1991    o remove MINIMAL_TAVE_OUTPUT option ;
1992      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1993    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1994      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1995    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1996    o add time-dependent SST, SSS control
1997    o cost terms in ecco/ modularized (new cost_generic.F)
1998    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1999    o new infrastructure for seaice model vs. obs misfits in seaice/
2000      * driver from the_main_loop.F is seaice_cost_driver.F
2001      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
2002      * gradient check in Exp. 6a of natl_box_adjoint/
2003    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
2004      (see README file)
2005    
2006    checkpoint57q_post
2007    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
2008    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
2009      - bug was reported by Jean-Michel and Ian Fenty
2010    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
2011      update exp. cpl_aim+ocn output.
2012    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
2013      Needed for high-res. runs with large global files
2014      to be able to limit tapelev size
2015    o Changed some tests for adjoint:
2016      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
2017      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
2018      * global_ocean.90x40x15/ back to default 3-level checkpointing
2019    o Modifications to enable scripted COMMON to MODULE conversion
2020      * verification/OpenAD/code/ has necessary scripts and description;
2021      * converts, compiles and runs successfully;
2022    
2023    checkpoint57p_post
2024    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
2025    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
2026      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
2027    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
2028    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
2029      (was already the case for dissipation with mom_vecinv,
2030       and also the case for grad.PhiHyd when staggered-timeStep)
2031      This will allow to put dissipation out-off the AB time-stepping.
2032     Unfortunately, affects truncation error. Update output of exp. that "fails"
2033      (cg2d matching number) and leave the others for later: front_relax(10),
2034      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
2035      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
2036    
2037    checkpoint57o_post
2038    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2039      (2) its ready to be documented during the 20050801 DocFest
2040    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2041      for ideal_2D_oce and lab_sea on linux_ia32_g77
2042    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2043      in global1x1_tot/code_seaice_adj to access indices 32, 33
2044      (worth another tag)
2045    
2046    checkpoint57n_post
2047    o adding precip control xx_precip 32
2048    o adding swflux control xx_swflux 33
2049    o Replacing 10 forcing penalty cost routines by 1 generic.
2050    o Implementing partitioning in time-mean and variable adjustment
2051      for atmos. state.
2052    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2053    o in natl_box_adjoint:
2054      * updated exp 1 to 10
2055        (but does not have time-mean vs. variable split results yet)
2056    o updated global1x1/*_seaice_adj/
2057      to incorporate latest changes
2058    o enable useSingleCpuIO for mdsio vector routines
2059      (applies in particular to tapelev I/O)
2060    o removed inefficient K-loop in all active_file*control*.F
2061    
2062    checkpoint57m_post
2063    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2064      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2065    o pkg/exch2: filling of face-corner halo regions is optional
2066      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2067    
2068    checkpoint57l_post
2069     tag before updating tutorials (pre-release-2)
2070    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2071       for output and interpolation of input fields onto model grid)
2072    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2073       Affects results of exp. rotating_tank ; update output.txt.
2074    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2075          and taking the square quantity and/or using a fraction-weight field.
2076    o fix aim_diagnostics_init.F mate numbers.
2077    o add mnc output capability to diagnostics/diagstat and update
2078      our cvsignore files for the ACSII output generated
2079    
2080    checkpoint57k_post
2081    o lab_sea now uses diagnostics package and provides a suite of
2082      new EXF diagnostics output.
2083    
2084    checkpoint57j_post
2085    o exf
2086      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2087        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2088        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2089      * extended diagnostics output
2090        - now includes all EXF variables
2091        - hs, hl moved to common block
2092        - separate S/R for diagnostics, called after ctrl vector is added
2093        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2094        - EXFqnet contains true Qnet (i.e. includes qsw)
2095      * updated verif. lab_sea, global_with_exf
2096      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2097        to ensure that diagnostics sees a true EXFqnet
2098    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2099    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2100      several times with different frequencies.
2101    o mnc-ify the thsice package as requested by Daniel Enderton
2102      - the monitor--MNC output needs work
2103      - many attributes need to be added (most are currently blank)
2104    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2105      - many attributes need to be added (most are currently blank)
2106    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2107    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2108    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2109      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2110         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2111    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2112     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2113    
2114    checkpoint57i_post
2115    o Diagnostics package was changed: diagnostic allocation is now deactivated
2116      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2117    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2118      add 1rst Order upwind vertical Shear.
2119    o add a quick fix for A/B checkpointing in OFFLINE mode
2120    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2121      end-run around the C/Fortran linking horror in eesup/src/timers.F
2122    o added pkg/runclock: allows user to terminate run based on wall clock
2123    o added non-hydrostatic scaling parameter: nh_am2
2124    o pkg/my82: futile attempt to make results compiler-independent by adding
2125      some "_d 0", etc. no effect.
2126    o for mnc output, fill the 'T' coordinate var with myTime and create a
2127      separate 'iter' variable for iteration count
2128    o pkg/diagnostics:
2129      add new capability: output of Global/Regional & per-level statistics ;
2130      tested against monitor output (including land & thSIce) on various exp.
2131    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2132    
2133    checkpoint57h_done
2134      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2135      data.diagnostics, data.gchem, data.ptracers) is done.
2136    
2137    o pkg/diagnostics: prepare for Global/Regional statistics.
2138      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2139    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2140      and rename it: DIFFERENT_MULTIPLE
2141    
2142    checkpoint57h_post
2143    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2144    o pkg/diagnostics: change output frequency, now in seconds (instead
2145      of Nb of iterations). This requires to change data.diagnostics.
2146    checkpoint57h_pre
2147    
2148    o in mnc, let the user create the output dir if both mnc_outdir_date
2149      and mnc_outdir_num are false
2150    o add fflags() to pkg/diagnostics which allows one to specify, on a
2151      per-file basis, the file precision [default behavior is unchanged]
2152    o added diagnostics to pkg/kpp, including computation of mixed layer
2153      depth based on a temperature/density criterion
2154    o updated verification/natl_box to test the new pkg/kpp diagnostics
2155    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2156    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2157    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2158      not mnc -- this mistake was found by JMC and is now corrected
2159    
2160    checkpoint57g_post
2161    o add Adams-Bashforth 3rd Order time stepping:
2162      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2163      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2164    checkpoint57g_pre
2165    
2166    o make lambda[Theta,Salt]ClimRelax spatially varying
2167      (default remains spatially uniform constant based on tau)
2168    o added new control variables
2169      * init. uVel, vVel, etanN
2170      * lambda[Theta,Salt]ClimRelax
2171    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2172      (suggested by G. Forget)
2173    
2174    checkpoint57f_post
2175    o add parameter "baseTime" = model base time = time at iteration zero
2176      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2177      account for baseTime shift
2178    o move Coriolis arrays from PARAMS.h to GRID.h
2179    checkpoint57f_pre
2180    
2181    o mnc-ifying the seaice package
2182    o introduced an alternative length scale calculation for use in the limiting
2183      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2184    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2185    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2186      as well as grad(vort3).  Made it compatible with both approximate form
2187      for the cubed sphere and full form of these gradients.  Added flag
2188      useFullLeith to select between approximate and full form.  
2189    o add "d0" in getcon.F to reduce differences between compilers/platforms
2190      update output.txt of exp. fizhi-gridalt-hs
2191    o change port_rand funtion to allow to set the seed.
2192    o fix obscure MNC bug involving conversion between reals and integers
2193      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2194        new version is now more standards-compliant
2195    o adjoint-related modifications
2196      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2197      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2198      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2199    
2200    checkpoint57e_post
2201    o Adding eddy stress controls a la Ferreira et al.
2202    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2203    
2204    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2205      update output.txt of exp. fizhi-gridalt-hs
2206    o add more "Z" dimensions and associated coordinate vars to MNC
2207    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2208    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2209      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2210      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2211      months and years.  Requires pkg/cal.
2212    o diagnostics: add pickup functionality
2213      - off by default for backwards compatibility
2214      - current version only uses MDSIO -- MNC will be added
2215    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2216    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2217    
2218    checkpoint57d_post
2219    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2220    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2221      output from the diagnostics package
2222    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2223    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2224      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2225    o add coordinate variables to the MNC output from the diagnostics package
2226    o change MNC-flags default value: true when useMNC=TRUE
2227    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2228      the ability (off by default) to read the grid information using MNC
2229    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2230    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2231    o do snap-shot diagnostics at the middle of the time-interval (instead of
2232      at the end).
2233    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2234      new test for AIM with thSIce + slab-ocean
2235    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2236    o move state variable diagnostics to the beginning of the time step ;
2237      (note: still needs some work specially for snap-shot diagnostics)
2238      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2239    
2240    checkpoint57c_post
2241    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2242    o generate new output.txt files on faulks with g77 & the new -ieee option
2243    checkpoint57c_pre
2244    
2245    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2246      update output.txt of exp. global_ocean.90x40x15
2247    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2248      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2249    o add saltFlux(+File) forcing capability with periodicExternalForcing
2250    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2251    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2252    o improvements for the MNC output from DIAGNOSTICS:
2253      - correct handling of the unlimitied dimension
2254      - all dims now have associated coordinate variables
2255      - variables located at U, V, and Corner ("Z") points are now written
2256        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2257        *all* data points are output
2258    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2259    o added pkg/seaice/seaice_monitor.F
2260    o mdsio_readfield.F can now read files visible only to master MPI process.
2261    o pkg/seaice: some test code for ice-modified ocean stress
2262    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2263      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2264      spurious negative numbers for precipitation and humidity.  Will cause
2265      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2266    o pkg/ctrl/
2267      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2268        May be enabled via doPackDiag
2269      *  introduce z-scaling of
2270         + gradient (doZscalePack) and
2271         + control (doZscaleUnpack)
2272    o pkg/mdsio/
2273      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2274      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2275    
2276    checkpoint57b_post
2277    o simplify options in diagnostics_fill arguments (remove weird combinations)
2278    o fix MNC coordinate variables so that they now contain per-face index
2279      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2280      general, EXCH2 grids are only aligned to a "local" coordinate system
2281    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2282    o Implement instantaneous output within pkg diagnostics:
2283      setting a negative frequency in data.diagnostics produces
2284     "snap-shot" output (as opposed to time-average if freq > 0)
2285    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2286      NOTE: change ptracer diagnostics name: use 2 characters to work with
2287            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2288    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2289      becomes the coordinate variable for the 'T' dimension
2290    o add CF-style coordinate variables to MNC
2291      - just a first cut:  numbers are meaningless on the cubesphere and
2292        missing along the T axis but otherwise it works!
2293    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2294    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2295    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2296      this is based directly on what the model compute, so that the content of
2297      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2298    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2299    o clean up build options files for SunOS, in particular
2300      - remove -traditional from xmakedepend
2301      - change -xarch=v9 to -xarch=native for f77
2302      - restore use of make (not gmake)
2303      - add CC=gcc if using g77
2304    o changes per discussion of AM, JMC, & EH3 today:
2305      - move redundant "grid" variables out of "state" -- in preparation of
2306        creating proper CF-style coordinate variables and in recognition
2307        that any/all grid variables can be easily copied (eg. w/NCO) from
2308        the grid files into any of the other NetCDF files
2309      - *always* output grid variables with MDSIO (this will eventually be
2310        changed)
2311      - output MNC grid file if useMNC is true
2312    o every instance of _END_MASTER() has been found and replaced with
2313      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2314      preprocessors
2315    o re-arrange diagnostics pkg initialisation:
2316     - allow each package to extend the available diagnostics list
2317     - add some checking and fix small problems (multi-threaded, ...)
2318     - new S/R diagnostics_fill (replace fill_diagnostics):
2319       look through the short list of active diag. (instead of the long list)
2320       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2321    
2322    checkpoint57a_post
2323    o this set of changes restores TAMC compatibility
2324      tested for global_ocean.90x40x15 adjoint on trough
2325      (what a pain)
2326    
2327    checkpoint57a_pre
2328    o some modifs in tools/build_options for sunos
2329    o call ctrl_pack for ctrl at end for optimcycle=0
2330    
2331    checkpoint57
2332    o add horizontal bi-harmonic viscosity for vertical velocity
2333      - new parameter viscA4W (defaults to viscA4)
2334      - affects only non-hydrostatic code
2335      - to be done: no-slip lateral boundary conditions
2336    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2337    o implement Implicit Vertical advection for pTracers
2338    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2339      (implemented also for implicit vertical diffusion & advection)
2340    o OBCS: extend application of tracer open boundary conditions
2341      to a strip beyond the boundary of width Olx/Oly
2342    o add call monitor to TAF set of required calls (flow directives)
2343      and include in natl_box_adjoint
2344    o untangle a few ifdefs related to cost, ctrl, autodiff
2345      untangel a few ALLOW_ECCO_OPTIMIZATION
2346    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2347      (theta2, salt2 in ecco_cost_weights)
2348    
2349    checkpoint56c_post
2350    o OBCS as control variables
2351      - update ctrl_ad_diff.list, obcs_ad_diff.list
2352      - remove balance of obcs controls from default
2353      - fix index bug nobcs in ctrl_init
2354      - fix dummy fields filen in ctrl_pack
2355      - add dummy weights for obcs
2356    o lsopt: comment out fort.94 output
2357    o optim:
2358      - remove unnecessary header files
2359      - adjusted namelists
2360      - add xerbla.F to Makefile
2361    o exf:
2362      - multiple modifications of exf_check_range
2363      - unit change in exf_init_runoff from [m/year] to [m/s]
2364    o mdsio:
2365      - i/o-vector change debugLevel from debLevA to debLevB
2366    
2367    checkpoint56b_post
2368    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2369      is called from DO_THE_MODEL_IO
2370      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2371      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2372      - clean up PTRACERS_WRITE_TIMEAVE a little
2373    o add another verification experiment that tests both the cfc-pkg and
2374      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2375      reactive tendencies treated inline with regular timestepping
2376    o testreport previously did a lousy job of comparing small numbers, so
2377      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2378      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2379      testreport.
2380    o ptracers_monitor: bug fix for MPI
2381    
2382    checkpoint56a_post
2383    o GCHEM: finish reorganizating the package
2384      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2385        (introduces another 3D-array for each passive tracer, but only if
2386        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2387        gchemTendency is not needed because the timestep is done separately)
2388      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2389      - GCHEM is now---more or less cleanly---separate from PTRACERS
2390      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2391        so clear to me how that should be done in a general way.
2392    o CFC: improve formatting of output in CFC_ATMOS
2393    o PTRACERS:
2394      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2395        that ALL experiments with ptracers enable can be checked. This makes
2396        GCHEM_MONITOR obsolete.
2397      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2398        monitorFreq
2399      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2400    o add PTRACERS (PTR0[1-5]) to testreport output
2401    o exf_check_range:
2402      * default changed to .TRUE.
2403      * will check values for niter0 if debLevA, every timestep if debLevB
2404      * STOP in exf_check_range if 'out of range'
2405      * range chosen generous to allow for potential extema
2406      TBD: a version with stricter range
2407           permitted range would be runtime parameters
2408    o GMredi:
2409      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2410      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2411      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2412    o GCHEM:
2413      - move call to GCHEM_FORCING_SEP, so that it is now called before
2414        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2415      - introduced a useGCHEM runtime flag and applied it everywhere.
2416      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2417        this flag is now only visible within GCHEM-pkg routines.
2418      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2419        be replaced by a 3D array that is computed before thermodynamics; for
2420        this, the tracer ID iTracer had to be included into the parameter list
2421        of ptracers_forcing
2422      - set up forward_step to call gchem_forcing, that will replace
2423        gchem_forcing_int in ptracers_forcing
2424      - cleaning up
2425    o small cleaning of exch2: remove files that are also in eesupp/src
2426    
2427    checkpoint56
2428    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2429    o mnc: cleanup "full" files--fixes out-of-memory problem
2430    o ECCO-GODAE
2431      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2432      * fully merged and updated from SIO code
2433        windstress sign change affects
2434        - exf_inscal_[u/v]stress
2435        - sign of xx_tau[u/v] adjustments
2436        - signs in cost_scat
2437      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2438      * natl_box_adjoint updated and compressed
2439      * 2-level checkpoint switch added
2440        (tested in EXP. 1 of natl_box_adjoint)
2441      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2442    o SVD
2443      * first complete, non-hacked version for SVD calculations
2444      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2445        performed via direct access files admtlm_vector.it????
2446        (via ctrl_[un]pack)
2447      * optimcycle is used for ARPACK iteration counter
2448        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2449      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2450        and add linear transforms where necessary
2451      * controls are initial/final SST, SSS (can be extended; need to check
2452        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2453    o mdsio: filename info to both stderr, stdout
2454    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2455      from sign change
2456    
2457    checkpoint55j_post
2458    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2459      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2460    o add consistent build directories and .cvsignore files to verification
2461    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2462    o make all subroutines 30 or less characters in length for certain older
2463      compilers to work (a thorough search only turns up two routines in
2464      pkg/ptracers)
2465    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2466      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2467    
2468    checkpoint55i_post
2469    o change arrays for total vertical diffusivity (2.D if explicit,
2470      3.D if implicit) ; each ptracer uses its own background value.
2471    o added mnc/NetCDF output capability to ocn_compon_interf
2472      - added bits to verification/cpl_aim+ocn so that it can run on
2473        ITRDA and other clusters without the mpirun "-wd" option
2474    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2475      configuration
2476    o give MNC the ability to create additional files rather than
2477      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2478      - the default is just less than 2GB which is a practical limit
2479        on many systems
2480    o Compute the non-local term using either KPP vertical diffusivity (=default)
2481       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2482    
2483    checkpoint55h_post
2484    o add verification test "vermix"
2485    o remove all the *_ioinc flags and replace with the single global
2486      outputTypesInclusive flag
2487    o allow to set a vertical profile of vertical diffusivity for T & S
2488    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2489    o useMNC moved from data.mnc to data.pkg
2490    
2491    checkpoint55g_post
2492    o Renaming carbon AD experiments to comply with testreport conventions
2493    o Updating adjoint of Held-Suarez hs94.1x64x5
2494    o Fixing directives for non-ECCO forward_step, after ECCO directives
2495      have been fixed to avoid recomp. of do_oceanic_phys
2496      Works well for global_ocean.90x40x15,
2497      but recomp. issue remains for carbon
2498    o Updating adjoint output for natl_box_adjoint after
2499      pkg/ecco has been modified (see taga c55d_post)
2500    
2501    checkpoint55f_post
2502    o rename to timeave_init_fixed
2503    
2504    checkpoint55e_post
2505    o some delicate re-shuffle of store directives to avoid one
2506      extra call of do_oceanic_physics
2507      affects ecco_the_main_loop.F, do_oceanic_physics.F
2508      checkpoint_lev1_directives.h
2509    o NB: this may break global_ocean adjoint temporarily,
2510      but it is clear how to fix it. Will do later, need this now.
2511    
2512    checkpoint55d_post
2513    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2514    o ecco_cost_weights is modified to 1x1 runs
2515    o modifs to allow observations to be read in as
2516      single file or yearly files
2517    o enable to read exf forcing fields as either
2518      single file or yearly files (flag useExfYearlyFields)
2519    checkpoint55d_pre
2520    
2521    o switch between 2-level and 3-level checkpointing
2522    o add ability of MNC to write local and "partial" (eg. 2D slices where
2523      the full 3D field is never actually stored) arrays to NetCDF files
2524      with the correct (that is, the complete multi-dimensional) set of
2525      array indicies
2526      - used in mom_vecinv() to write the diagFreq output
2527      - tested (demonstrated) in verification/aim.5l_cs
2528    o further mnc-ification
2529      - add verification/lab_sea to the list with mnc setups
2530      - fix undefined mnc v-names in cd_code
2531      - add kpp to mnc output (both snapshot and timeave)
2532    o non-hydrostatic code
2533      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2534        in calc_gw.F
2535      - defaults to viscAh
2536      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2537        friction or Leith) in non-hydrostatic mode, as long as there is
2538        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2539    o pkg/cost
2540      extend simple cost functions to treat time mean quantities
2541      (T,U,V) via cost_accumulate_state from cost_tile
2542    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2543        be 2 times larger than the minimum size the advection scheme requires.
2544        now get a perfect conservation of salt in advect_cs test-exp (updated)
2545    o GGL90 (Gaspar's TKE mixed layer)
2546      - add horizontal diffusion of TKE, requires exchanges in
2547        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2548        default. In OPA there is no horizontal diffusion of TKE but the
2549        mixing coefficients are computed from a horizontal average of TKE of
2550        6 points or so. I think that diffusion has a little more physical
2551        justification.
2552      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2553        was in vain)
2554      - mask tke-variable in ggl90_init
2555    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2556    o fix biharmonic diffusion on CS-grid.
2557    o more obcs stuff
2558      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2559        for reading boundary values. This routine is called from
2560        obcs_prescribe_read
2561      - updated obcs_check
2562      - changed sponge layer relaxation parameter units for days to seconds
2563      - turned off sponge layer by default
2564      - changed argument list of OBCS_CALC to myTime+deltaTclock
2565      - fixed about 35 bugs in obcs_external_fields_load
2566    
2567    checkpoint55c_post
2568    o obcs stuff
2569      - new runtime flags useOBCSprescribe, useOBCSbalance
2570      - re-arranged obcs_calc
2571      - moved exf_getobcs to obcs_prescibe_read
2572        obcs_prescibe_read is called after ORLANSKI stuff
2573        and independent of it (executable can contain all).
2574      - updated obcs_check
2575      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2576        These may be necessary only if tangential velocities are
2577        prescribed at OB, not sure, needs testing.
2578    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2579      which simplifies the calls and passes the ifc check-bounds test
2580    
2581    checkpoint55b_post
2582    o add a 2D scalar, Z location, exchange_2 routine.
2583    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2584      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2585      affects advect_cs results (for the wrong reason): update output.txt
2586    o use a more standard discretization for biharmonic viscosity ;
2587     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2588      affects results of dome set-up: update output.txt
2589    o fix gad_advection.F (CubedSphere part), back to version 1.23
2590    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2591    
2592    checkpoint55a_post
2593    o merged code to
2594      * prescribe/read time-dependent open boundaries
2595        (works in conjunction with exf, cal)
2596      * sponge layer code for open boundaries
2597      * each boundary N/S/E/W now has its own CPP option
2598        (healthy for the adjoint)
2599    
2600    checkpoint55
2601    o up-to-date adjoint of previous breaks
2602      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2603      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2604      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2605      - carbon: * remove tr1-related adjoint verification
2606                * add ptracer as control variable
2607    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2608      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2609    
2610    checkpoint54f_post
2611    o in verification/carbin/ remove experiment related to
2612      ALLOW_PASSIVE_TRACER (array tr1 etc)
2613      code_ad/ input_ad/ results_ad
2614    
2615    o add two new packages
2616      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2617        + subject to optimization (memory)
2618      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2619        + subject to reordering (many GOTOs in the original code)
2620        + so far opps is called for every (i,j) point, and then operates in
2621          the vertical; one may want to reorder the scheme in order operate in
2622          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2623          fields)
2624    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2625      - all verification tests compile and run with linux_ia32_g77
2626      - defaults are compatible with current input files--nothing
2627        should change if you were not previously using MNC
2628      - MNC output has been added in numerous places (eg. timeave)
2629        but there are still a few writes not yet do-able with MNC
2630        (this is in progress)
2631      - flags now allow for either/or/both use of MDSIO and MNC and
2632        documentation will soon follow
2633      - numerous small formatting cleanups for ProTeX
2634    o add version info (via BUILD_INFO.h) to MNC and stdout
2635    
2636    checkpoint54e_post
2637    o add two new packages
2638      - pp81 (Packanowski and Philander, 1981), Richardson number and
2639        stratification dependent mixing
2640      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2641      - these scheme operate in a similar manner as KPP (without ghat, of
2642        course), however there is only one diffusivity that is used for both
2643        temperature and salinity (and passive tracers)
2644    o add offline package
2645    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2646      provided by Stephanie Dutkiewicz
2647    o genmake2: add ability to search for C compilers and cleanup test output
2648      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2649    
2650    checkpoint54d_post
2651    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2652    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2653      leading to additional shift by 5 days each year of integration
2654       (i.e. leading to considerable offset over the years)
2655    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2656    o start with no AB and no initial filtering (staggerTimeStep):
2657      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2658    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2659      (external loading & cpl import/export stay in forward_step.F)
2660    o update coupling interface to work with new staggerTimeStep
2661    o change MDSIO ptracers_pickup.
2662    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2663    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2664    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2665    
2666    checkpoint54c_post
2667    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2668      this affects (truncation error) output.txt of test-exp:
2669       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2670    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2671    o change Qnet to always be the net heat flux, (+upward).
2672      affects (truncation error) output of natl_box exp.: updated
2673    o define the max number of passive tracers in PTRACERS_SIZE.h
2674    o start to test mnc routinely in exp0
2675    o add sea-ice loading (sIceLoad) as a new forcing field.
2676    
2677    checkpoint54b_post
2678    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2679       impressive on Altix and Opteron systems)
2680    o diagnostics can now write NetCDF files through the mnc package
2681    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2682    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2683    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2684      affects (truncation error) output of lab_sea & natl_box exp.: updated
2685    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2686    
2687    checkpoint54a_post
2688    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2689    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2690    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2691    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2692      + internal_wave (shift in writing cg2d_ini_res)
2693    checkpoint54a_pre
2694    
2695    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2696      - modified verification/lab_sea and natl_box_adjoint accordingly
2697    
2698    checkpoint54
2699    checkpoint53g_post
2700    o prepare splitting of thermodynamics: store convect.counter in common block
2701    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2702      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2703    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2704    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2705    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2706    o restore adjointability
2707    
2708    checkpoint53f_post
2709    o modifications that affect AIM experiment results (update output.txt):
2710      - no advection of S at top interface Nr (pkg/generic_advdiff)
2711      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2712    o AIM pkg:
2713      - include stability function into surf.Flux derivative relative to Tsurf
2714      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2715    
2716    checkpoint53e_post
2717    o merged cylindrical coord configuration
2718    o added rotating_tank experiment
2719    checkpoint53e_pre
2720    
2721    checkpoint53d_post
2722    o faulks upgraded: re-generate output.txt that have changed:
2723       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2724    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2725    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2726    o added Sadourny discretization of Coriolis
2727      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2728      - re-enabled use of omega3 (useAbsVorticity)
2729    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2730      vector-invariant equations
2731      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2732    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2733      hopefully without new bugs
2734      - still to do: biharmonic friction for non-hydrostatic w
2735    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2736    o regenerated output for global_ocean_ebm (using -ieee)
2737    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2738      of mom_common/
2739      - simple re-arrangement of instructions within computing loop
2740    checkpoint53d_pre
2741    
2742    checkpoint53c_post
2743    o new version of coupler for AIM+thSIce and Ocean models
2744     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2745     - land: change Evaporation of snow
2746     - aim with thSIce: fix bug in snow-precip.
2747    o changes to calc_gw.F
2748     - bug fix for w^2 term near the bottom boundary
2749     - (hopefully) improve the lateral slip boundary condtions for use with
2750        partial/looped cells
2751      - because the bug fix changes two verification experiments anyway (exp5
2752        and plume on slope), change the lateral boundary condition from half slip
2753        to the value of no_slip_sides
2754    o ebm package wasnt quite up to the parallel task. Fixed that.
2755    o Adjoint of EBM package + verification
2756      * TLM OK
2757      * ADM not sufficient accuracy yet (needs further testing)
2758    
2759    checkpoint53b_post
2760    o Commiting new energy balance model to repository
2761      * package is pkg/ebm
2762      * verif. is verification/global_ocean_ebm
2763      * references are in ebm_driver.F
2764    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2765    C        Global thermohaline circulation. Part I:
2766    C        Sensitivity to atmospheric moisture transport.
2767    C        J. Climate 12(1), 71-82
2768    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2769    C        Global thermohaline circulation. Part II:
2770    C        Sensitivity with interactive transport.
2771    C        J. Climate 12(1), 83-91
2772    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2773    C        Destabilization of the thermohaline circulation
2774    C        by atmospheric eddy transports.
2775    C        J. Climate 7(12), 1870-1882
2776    o Will need long integration testing.
2777    checkpoint53b_pre
2778    
2779    o created pkg/mom_common in preparation for variable viscosity code
2780    o renamed and split ini_mnc_io
2781    o pkg/land: only liquid water can diffuse or run-off
2782    o AIM using land: soil wetness availability account for snow
2783    o added printMapIncludesZeros to EEPARMS namelist
2784    
2785    checkpoint53a_post
2786    o restore TAMC compatiility for exf_constants.h
2787      (no usage of _d in .h)
2788    o Additional storing in KPP in an attempt to fix
2789      TAMC problem with adjoint of KPP code.
2790      (no success...)
2791      Identical code works fine with TAF.
2792    o Fixed verification/natl_box_adjoint experiments.
2793      Initial conditions for Experiments 4 and 5 are now
2794      set to "SEAICE_initialHEFF=0", which is more reasonable,
2795      and hence gives results closer to that of Experiment 2.
2796      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2797    
2798    checkpoint53
2799    o stable checkpoint with up to date adjoint
2800      TLM tests only run for 1st grdchk at the moment. Its unclear if
2801      this is a code problem or a problem with resetting code for g_
2802      variables that is being autogenerated wrong.
2803      Otherwise:
2804       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2805       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2806         are both still in chaos following their security messes.
2807    
2808    checkpoint52n_post
2809    o various build (mostly genmake2) changes including:
2810      - ability to build/run more easily within Cygwin and MacOS X
2811      - more complicated Makefiles with a stronger dependence on Gnu Make
2812    o pkg/seaice modifications
2813      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2814        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2815        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2816      - changed proxy for geostrophic velocity and updated
2817        verification/lab_sea/results/* accordingly
2818      - removed ADI dynamic solver from pkg/seaice
2819      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2820        they caused a segmentation fault under certain circumstances
2821      - removed unused field WATR
2822    o bug fix in exf-package:
2823      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2824         now reflect that.
2825    o small fixes in the cal-package:
2826      - set reference date to first of January for the 'model'-calendar
2827      - failing of cal_CheckDate in cal_FullDate now actually results in a
2828        warning
2829    o small modifications in exf-package to increase flexibility:
2830      - change climtempfreeze from a constant to a runtime parameter that
2831        is specified in data.exf_clim (default = -1.9)
2832      - introduce runtime parameter windstressmax (default = 2.0) that is
2833        specified in data.exf
2834    o fix in pkg/thsice:
2835      - update Evap (Tsf changes) to be consistent with Latent heat flux
2836      - maintain snow precipitation unchanged (even if Tsf >=0).
2837     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2838    
2839    checkpoint52m_post
2840    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2841      this does not change any of the results, because myIter=0 in swfrac always
2842      lead to jwtype=2 (the default anyway), but the call makes little sense
2843      as a default
2844    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2845    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2846      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2847    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2848    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2849    o extending useSingleCpuIO option to work with new exch2 I/O format
2850      - old-style, missing-tile I/O is still accessible by defining CPP
2851        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2852    o monitor package can write to NetCDF files and/or STDOUT
2853    o fix re-definition bug in MNC_GRID_INIT_ALL()
2854    o doc/api_reference added
2855      - a framework for building an API Reference Manual using all
2856        the "protex" comments embedded in the code
2857      - see pkg/generic_advdiff, pkg/mnc for examples
2858    o MNC:
2859      - make myThid the last argument for all subroutines
2860      - new default for the grid files: NO halos
2861      - add useMNC and other run-time flags
2862      - separate per-file-group handling of the unlimited dimension
2863      - early initialization of MNC w/ flags read at the eeboot stage
2864        and lookup tables set in initialize_fixed
2865      - write all MNC output to a freshly-created directory
2866    o thermodynamics sea-ice (thsice) is now tested with testreport.
2867    o test exp. advect_cs: use the standard cs32 grid ; update output.
2868    o Added functionality to grdchk:
2869      pick global i,j,k position (or nearest wet) where to perform check.
2870    
2871    checkpoint52l_post
2872    o new land formulation:
2873      a) use ground enthalpy as prognostic variable to ensure exact
2874         energy conservation.
2875      b) account for water temperature and for latent heat of freezing
2876         in all processes (rain, run-off, ground storage)
2877      c) compute surface and ground temperature implicitly.
2878    o aim_v23 modification for new land model:
2879      a) Treat separately land / ocean / sea-ice surface fluxes
2880         to allow implicit computation of land & sea-ice surface temp.
2881      b) add snow precipitation.
2882    checkpoint52l_pre
2883    
2884    o fix problem (when 1 tile is empty) in min/max monitor.
2885    o fix bug in timeAve (u,vZetatave in common block)
2886    o no restoring terms under ice for pkg/seaice
2887    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2888    o bug fix for pkg/seaice pickups
2889    o change MNC call locations and add coordinate attributes
2890    o mask vorticity at the corner ; affects global_ocean.cs output
2891    o fix ini_curvilinear_grid ; test CS experiments with mpi
2892    o aim.5l_cs: modify sea-ice fraction input file ; update output
2893    o exf: Adding simple range check routine for exf fields after read
2894    
2895    checkpoint52k_post
2896    o removed top-level directory "diags"
2897      - we migrated these functions to pkg/timeave a long time ago
2898    o fixed bug introduced in pkg/monitor
2899    o accuracy ctrlprec = 32 insuffient for gradient checks using
2900      averaged fields (I/O via cost_averages)
2901      -> use ctrl.h in active_file*.F to control I/O precision.
2902    o paramter list of CALL ADTHE_MAIN_LOOP
2903    o added initial do_the_model_io to ecco
2904    o set all ...Freq to zero after cost_final
2905      taveFreq, dumpFreq, pChkptFreq
2906    o MAIN and ECCO differentiability restored
2907    
2908    checkpoint52j_post
2909    o fix nchklev in tamc.h for global_ocean...
2910    o Bringing flow and store directives up-to-date
2911    o Really weird thing!
2912      call do_the_model_io from the_main_loop with parameters
2913      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2914      TAF places a faulty re-call of initialise_varia
2915      after cost_final call which should not be there!
2916    checkpoint52j_pre
2917    
2918    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2919      error messages
2920    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2921    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2922      debug output
2923    o modfied mdsio_writefield.F to handle non-global files under exch2
2924    o update AIM Cubed-Sphere exp (aim.5l_cs):
2925      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2926    o update AIM Equatorial Channel exp:
2927      use standard aim_v23 pkg and change the SST fields to be more realistic.
2928    o globalFile now works with exch2
2929    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2930      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2931    o limit timeave output for hi-res integrations
2932    
2933    checkpoint52i_post
2934    o removed CPP_EEOPTIONS.h from verification/*/code
2935    o updated the tiling for global_ocean_pressure
2936    checkpoint52i_pre
2937    
2938    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2939      the old pkg/aim).
2940    
2941    checkpoint52h_pre
2942    o shortened offending lines in exch2_send_rx?.template
2943    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2944    o genmake2: add build & execute test for NetCDF code
2945    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2946      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2947    o added useSingleCPUIO flag to monitor.F and mon_out.F
2948    o added temporary hack for sea-ice dynamics on the cube:
2949      metric terms are ignored and it is assumed that
2950      there is no sea-ice on cube faces 1, 2, 4, and 5.
2951    
2952    checkpoint52f_post
2953    o added exch2 cube routines to pkg/exch2
2954    o modified hs94.cs-32x32x5 to use it
2955    o added new grid files to hs94.cs-32x32x5
2956    checkpoint52f_pre
2957    
2958    checkpoint52e_post
2959    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2960      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2961    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2962      to work with implicit vertical advection and AB ;
2963    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2964    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2965     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2966    checkpoint52e_pre
2967    
2968    o fix bug in impldiff when Nr=1 or Nr=2.
2969    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2970    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2971    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2972      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2973    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2974    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2975    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2976    
2977    checkpoint52d_post
2978    o re-tiled many expts to allow comparison in multi-processor mode
2979      - updated output accordingly
2980      - changed hs94.128x64x5 to use intial T from file rather than use the
2981        random number generator
2982    o add infrastructure in model routines for fizhi and gridalt packages
2983    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2984    o changes to permit hi-res, cubed-sphere, configuration
2985      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2986      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2987      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2988        of surface winds for the cube
2989      (A verification experiment, based on global_ocean.cs32x15, but with
2990       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2991       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2992       complete with example surface forcing files and matlab scripts to look
2993       at the output and compare it with that of global_ocean.cs32x15.)
2994    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2995       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2996       to conform to the common rule.
2997    o check-in the first version of the coupler + interfaces for multi-components
2998       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2999       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
3000       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
3001       - ocean and atmos. share the same horizontal grid (no interpolation).
3002       - exchanges between component and coupler is done in forward_step
3003    o new verification experiment, cpl_aim+ocn:
3004       coupled ocean - AIM atmosphere on cs32 grid.
3005    
3006    checkpoint52d_pre
3007    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
3008    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
3009    
3010    checkpoint52c_post
3011    o Fixing OPTIONS files for use of exf:
3012      - ALLOW_ECCO not needed
3013      - ECCO_CPPOPTIONS.h should not be included from
3014        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
3015        as has been the case in the past
3016      - All cal/exf related options are currently set in
3017        single header file. Should remain so until we
3018        agree on a consistent new policy.
3019    o Removed all CPP options for cal package.
3020      cal has no more CPP options.
3021    o modified STOREs in GAD_ADVECTION
3022    o corrected key comp. for passkey
3023    
3024    checkpoint52b_post
3025    o new version: "thsice" of thermodynamic sea-ice pkg:
3026     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
3027     - modify fluxes but do not change theta directly;
3028     - light cleaning of bulk_force pkg (still needed with thsice).
3029     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
3030       + output_thsice.txt to test thsice & bulk_force pkgs.
3031    o put back grid & coriolis monitor output.
3032    checkpoint52b_pre
3033    
3034    o call "do_the_model_io" at the beginning (=> dump initial state)
3035    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
3036    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
3037      (need info on NUMBER_OF_PTRACERS)
3038    o missing PTRACERS headers in some routines
3039    o default tamc.h in pkg/autodiff supposed to crash
3040      to ensure proper customization
3041    
3042    checkpoint52a_post
3043    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
3044      - moved surfaceTendencyTice from pkg/seaice to main code
3045      - subroutine FREEZE_SURFACE now limits only surface temperature
3046        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
3047        => new output.txt for global_ocean.cs32x15 & global_with_exf
3048      - keep the old version of FREEZE for backward compatibility;
3049        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
3050      - corresponding modifs for TAF directives
3051    o added surface flux output variables to TIMEAVE_STATVARS
3052    o time-averaged output for pkg/ptracers
3053    o fix problem with ECCO-related divided adjoint
3054      snapshot file was missing some ad-variables,
3055      but no warning issued by TAF
3056    
3057    checkpoint52a_pre
3058    o some bug fixes for #undef REAL4_IS_SLOW
3059    
3060    checkpoint52 = ecco_c52_e35
3061    o after testing adjoints of checkpoint51u_post
3062    
3063    checkpoint51u_post
3064    o this is the post-merge tag of the ecco-branch
3065      (needs another clean checkout and re-testing)
3066    o various natl_box_adjoint configs and results
3067      but no input fields
3068    o obcs adjoint not yet merged!
3069    o adding ECCO global 1x1 and 2x2 degree configs
3070    o updated/extended some store directives for seaice
3071    o pkg/ecco now containes ecco-specific part of cost function
3072    o top level routines the_main_loop, forward_step
3073      supersede those in model/src/
3074      previous input data.cost now in data.ecco
3075      (new namelist ecco_cost_nml)
3076    o in ctrl/ cleaned some cross-dependencies and updated CPP options
3077    
3078    checkpoint51t_post
3079    o this is the pre-merge tag of the ecco-branch
3080    
3081    checkpoint51s_post
3082    o cleanup: removed various obsolete #define-s
3083    o pkg/grdchk
3084      - renamed 'ph-grd 3' to 'grad-res'
3085      - merged from ecco-branch
3086        (remaining bug fixes for obcs gradient checks)
3087      - additional high-precision output for testreport
3088        (grep for 'precision_grdchk_result')
3089    
3090    checkpoint51r_post
3091    o cleaned up or removed CPP_OPTIONS.h files
3092    o updated results for some of the tests to reflect the new
3093      optfiles (-ieee: -O0 instead of -O3)
3094    
3095    checkpoint51q_post
3096    o cd_code:
3097      - moved cd_scheme.F -> cd_code_scheme.F
3098      - separate read_checkpoint from cd_code_ini_vars.F
3099      - separated cd_code part from write_checkpoint
3100      - updated AD_SOURCE, generated .flow
3101      - added CD_CODE_VARS.h to the_main_loop
3102      - Moving cd_code specific store dir.s to pkg/cd_code
3103    o ctrl package totally restructured
3104      - pack/unpack now optional and decoupled from
3105        xx_/adxx_ I/O
3106      - ctrl_pack/unpack cleaned
3107        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
3108      - confined inclusion of AD_CONFIG.h to where necessary.
3109    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
3110    
3111    checkpoint51p_post
3112    o create initial cd_code package
3113      - WARNING: the initialization of fields within packages
3114        is broken because INI_FIELDS (where READ_CHECKPOINT is
3115        called) is called *before* PACKAGES_INIT_VARIABLES.
3116        This seems to be backwards since
3117        1) its important to initially zero the entire field including
3118           the "halo" region
3119        2) zeroing needs to be done *before* reading pickup info
3120           and the pickup call might or might not happen in any
3121           particular run
3122      - this needs an overhaul for R2
3123    o cleanup verification/*/code/GMREDI_OPTIONS.h
3124    o cleanup testreport
3125    
3126    checkpoint51o_post
3127    o bringing AD-related verif's up to date with genmake2
3128      - carbon/
3129      - global_ocean.90x40x15/
3130      - hs.94.1x64x5/
3131      - (front_relax/ )
3132    o (more) consistent directory structure for AD-related verif.'s
3133    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
3134    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
3135    o bug fix in find_alpha.F for MDJWF:
3136      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
3137        change rho -> rho-rhoConst
3138      - replace call find_rho to find_rhonum
3139    o initialisation of rFlx extended to full array (required by TAF)
3140      and shifted to thermodynamics
3141    o removed PTRACERS.h in ptracers routine
3142    o added surfacetendencyPtr to S/R parameter list pracers_forcing
3143    o Correcting initialisations for fVerU, fVerV.
3144    o helping TAF to recognize dependency on kUp for
3145      fVerU, fVerV
3146    o Replacing delZ by delR in pkg/ctrl/
3147    checkpoint51o_pre
3148    
3149    o undid all of cp51 pending some cleanups and discussion
3150    o added the [#include "AD_CONFIG.h"] statement to all files that need
3151       it for adjoint/tl #defines
3152     o re-worked the build logic in genmake2 to support AD_CONFIG.h
3153     o removed tools/genmake since it no longer works
3154    
3155    checkpoint51n_post
3156    o modifications to make FREEZE flux visible to pkg/kpp
3157      - moved surfaceTendencyTice from pkg/seaice to main code
3158      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
3159      - subroutine FREEZE now limits only surface temperature
3160        (this means new output.txt for global_ocean.90x40x15,
3161         global_ocean.cs32x15, and global_with_exf)
3162    o added surface flux output variables to TIMEAVE_STATVARS
3163    
3164    checkpoint51n_pre
3165    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
3166    o added [#include "AD_CONFIG.h"] to all files that use the following
3167      defines:
3168      - ALLOW_ADJOINT_RUN
3169      - ALLOW_TANGENTLINEAR_RUN
3170      - ALLOW_ECCO_OPTIMIZATION
3171    
3172    checkpoint51m_post
3173    o incorporating changes to get TAMC/TAF working in genmake2
3174      - added new TAMC/TAF targets to the Makefile
3175      - various cleanups related to package handling
3176      - these changes should have no impact on the forward model
3177    
3178    checkpoint51l_post
3179    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
3180     - faster algorithm for cal_addtime.F
3181     - higher precision arithmetic, where needed
3182     - pkg/exf *startdate variables changed from calendar date to
3183       model integration time
3184    
3185    checkpoint51l_pre
3186    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
3187    o enable to apply restoring on S & T only in a latitude band.
3188    o update output (external_forcing_surf modif. change truncation errors)
3189       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
3190    
3191    checkpoint51k_post
3192    o change default to: useNHMTerms=.FALSE.
3193     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
3194       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
3195     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
3196        exp1, ideal_2D_oce
3197     - change data file of oceanic exp (leave the results unchanged for now)
3198       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
3199    o set gravitySign automatically according to the vertical coordinate used
3200      (and change sign: back to "logical" value: +1 when R increases downward)
3201    o added an include barrier to the default CPP_OPTIONS.h and
3202      removed the #include "PACKAGES_CONFIG.h" from it
3203    o fix a bug in mom_fluxform (from chk51j_post)
3204    
3205    checkpoint51j_post
3206    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
3207    o adjusted some flow directives (dynamics, thermodynamics)
3208    o added cubed-sphere case to test cost function
3209    o heckpoint_lev?_directives.h now include
3210      pkg-specific directives, whenever those are enabled.
3211    o Moving pkg-specific flow directives to corresponding pkg
3212      Moving pkg-specific differentiation list to corresponding pkg
3213      Moving pkg-specific checkpoint-lev storing to corresponding pkg
3214      ---> conventions are
3215           - pkg_ad.flow
3216           - pkg_ad_diff.list
3217           - pkg_ad_check_lev?_dir.h
3218    
3219    checkpoint51i_post
3220    o merge of the branch-genmake2
3221      - knowingly breaks the older genmake
3222      - automatic generation of all ALLOW_${PKG_NAME} defines
3223      - new testreport supersedes older testscript
3224    o large number of package inclusion and header cleanups
3225    checkpoint51i_pre
3226    
3227    o new output for adjoin of global ocean vector invariant
3228    o fix for checkpoint of thermodynamic seaice and bulk_force
3229    o Steph gchem various cleanups
3230    
3231    checkpoint 51h_pre
3232    o fixed some single quotes
3233    o modify gchem pkg to be more versatile
3234    o modifications to clean up dic pkg
3235    o add pkg/cfc
3236    
3237    checkpoint51g_post
3238    o provide links for ARPACK and ADM*TLM
3239    o start removing verification/vero/
3240    o update AD-related stuff
3241      (in particular some IF-statements in model/src/ routines)
3242    o adding to verification/global_ocean.90x40x15/ adjoint of
3243      vector invariant setup
3244    
3245    checkpoint51f_post
3246    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
3247    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
3248      of tracer Green's fucntions for ocean inversion project.
3249    
3250    checkpoint51f_pre
3251    o Added on-the-fly spatial interpolation capability
3252        "USE_EXF_INTERPOLATION" to pkg/exf.
3253      - This is a temporary Cartesian-grid hack until
3254        the super-duper ESMF coupler becomes available.
3255      - See verification/global_with_exf/README for usage example.
3256      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
3257        flags and modified pkg/seaice accordingly.
3258    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
3259        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
3260        non-local transport term.
3261    
3262    checkpoint51e_post
3263    o pkg/mom_vecinv:
3264      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
3265      - add time-ave diagnostic of vorticity advection.
3266    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
3267    o atmospheric geopotential: - include water vapor effect;
3268                                - use p^kappa in p* scaling.
3269    o land pkg: read initial state from files.
3270    o AIM : add stratospheric drag in the upper level
3271    
3272    checkpoint51d_post
3273    o change function ILNBLNK (=> last non-blank char.) to return zero
3274      (instead of the string length) when the string. char is empty
3275    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
3276    o modif's to restore TAMC compatibility
3277      - avoid "_d" constructs in PARAMETER declarations
3278      - avoid interrupting lines by comment lines
3279    o Use cluster local disks for purely local I/O
3280      vs. globally visible disks needed for ctrl stuff
3281      (merged from ecco-branch)
3282      - new active_file_loc... and mdsio_..._loc routines
3283      - affected packages: autodiff, ctrl, grdchk, mdsio
3284    
3285    checkpoint51c_post
3286    o introducing integer flag debugLevel
3287      - debLevZero: suppress all output
3288      - debLevA: standard
3289      - debLevB: equivalent to current debugMode=.TRUE.
3290    o introducing pathname variable mdsioLocalDir for mdsio
3291      that can be specified at runtime
3292      (relevant for cluster I/O to local disk)
3293    `
3294    >>>checkpoint51b_post
3295    adjoint of ptracers
3296    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3297    o extended state in checkpoint_lev?, etc.
3298    o alternative ctrl/cost with tr1 or ptracer
3299    o new comlev1_bibj_ptracers
3300    o new ptracers.flow
3301    o made ptracers_forcing same as external_forcing_s
3302    o added verification for adjoint with ptracers
3303      - adm. grdchk fail so far
3304      - tlm. grdchk OK
3305      - checked tapelev/comlev recomputations: OK
3306    <<<checkpoint51b_pre
3307    
3308    checkpoint51a_post
3309    o added code for biogeochemistry package
3310      - new pkgs: dic, gchem
3311      - new subroutine in ptracers
3312    o modify code for biogeo packages
3313      - in model/src and pkg/ptracers
3314    
3315    checkpoint51
3316    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3317      - autodiff, ctrl, exf, grdchk, seaice
3318      kept separate packages
3319      - cost, ecco, obcs
3320    o updating verification/internal_wave, verification/lab_sea
3321      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3322    
3323    checkpoint50i_post
3324    o Preparing next differentiable checkpoint and sync
3325      of MAIN vs. ecco-branch
3326      - 1st step: this one is differentiable
3327      - 2nd step: next(! not this) checkpoint will have updated packages
3328                  from ecco-branch)
3329    
3330    checkpoint50h_post
3331    o new package "land": provide surface BC for AIM.
3332    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3333    o AIM: use true log-P extrapolation for near surface temp (= as in
3334        F.Molteni paper) ; update aim.5l_cs output.
3335    o New variable in PARM03 for more flexible pickups
3336    o somewhat cleaned package initialisation sequence for
3337      ctrl/ cost/ ecco/ in packages_... routines
3338    
3339    checkpoint50g_post
3340    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3341      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3342      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3343        made the default because of faster convergence than ADI
3344    
3345    checkpoint50f_post
3346    o exf totally restructured
3347      - replaced all exf_set_ routines by one generic exf_set_gen.F
3348        and made sure it's still differentiable
3349      - split exf_getffields.F into new exf_bulkformulae.F
3350      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3351      - updated adjoint/makefile and relevant verif. accordingly
3352    
3353    checkpoint50f_pre
3354     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3355          + change Evap over land. (update aim.5l_cs output)
3356     o added missing .cvsignores and made uniform across expts
3357     o changed configuration of tidal_basin_2d expt
3358     o added pkg/debug functions for tracing code in fatal crashes
3359     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3360     o new fn in pkg/monitor to stop model if solution grows too big
3361     o removed lots of single quotes from comments
3362    
3363    checkpoint50e_post
3364    o make KPP work with PTRACERS
3365     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3366       nearly a copy of kpp_transport_s
3367     - there is no analogue to SurfaceTendencyS, so I have to use
3368       gPtr(of the surface layer) instead
3369    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3370    checkpoint50e_pre
3371    
3372    checkpoint50d_post
3373    o change kpp output from multiple-record state files to single-record state
3374      files analogous to write_state.F
3375    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3376      analogous to the cg2d-related output.
3377    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3378      so that writing to internal file fn (with length 512) fails.
3379    checkpoint50d_pre
3380    
3381    checkpoint50c_post
3382    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3383    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3384    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3385    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3386    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3387    
3388    checkpoint50c_pre
3389    Merging from release1_p13:
3390    o bug fix for pkg/seaice dynamic solver
3391    o Added SEAICE_initialHEFF to pkg/seaice
3392    
3393    checkpoint50b_post
3394    o store u*,v* in gU,V instead of in guNm1,gvNm1
3395    o in order to put the momForcing out of the Adams-Bashforth:
3396      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3397      to timestep.F
3398    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3399    o re-generate output for highly sensitive test-exp:
3400       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3401    
3402    checkpoint50b_pre
3403    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3404    o corrected CPP option mismatch in exf_Bulk... functions for case
3405      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3406    
3407    checkpoint50a_post
3408    o Bug fix for merging between c50 and KPP.
3409      ikey was passed from thermodynamics to kpp_calc via
3410      common block rather than being recomputed in kpp_calc,
3411      in contradiction with new key itdkey.
3412      New key ikppkey created, and tamc.h headers updated.
3413    
3414    checkpoint50
3415    - 2nd step of merge with ecco-branch:
3416      merge changes in ecco-branch back into main trunk
3417    - bug fix in find_alpha
3418    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3419    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3420    - merged some sliced AD support routines
3421    
3422    checkpoint49
3423    merged from ecco-branch:
3424    o exf:
3425      - Enable initialisation of forcing fields to constant
3426        (runtime) values.
3427      - in exf_getffields.F
3428        Reduce i-/j-loop to interior domain, discarding overlaps.
3429        That also fixes wrong TAF-key computations for key_1, key_2
3430        with bulf formulae.
3431      - exf_init.F modify #ifdef for exf_init_evap
3432      - exf_getffieldrec.F, ctrl_getrec.F
3433        The following INT-usages are not safe:
3434          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3435          fldcount = int(fldsecs/fldperiod) + 1
3436        and were modified.
3437    o autodiff: checkpoint_lev...
3438      - updated storing for bulk formulae (some arrays were missing)
3439      - added state for seaice package
3440      - synchronized with main branch
3441    o DIVA:
3442      Modif.s in
3443      - the_main_loop.F
3444      - the_model_main.F
3445      and added cost_final_restore.F cost_final_store.F
3446      o With these changes, it is possible to fully separate
3447        the first forward run to compute the cost function (mdthe_main_loop)
3448        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3449        into separate model executions.
3450        This enables better tuning of DIVA to given queue sizes.
3451      o Loss of cost function value in consecutive DIVA runs is
3452        fixed by storing to 'costfinal' file.
3453      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3454        beginning/end of adjoint integration is accounted for.
3455      The current changes apply to TAF-1.4.26.
3456      TAF has one remaining bug, requiring one manual change
3457      (see MITgcm manual).
3458    o cal: synchronized between MAIN and ecco-branch
3459    
3460    checkpoint48i_post
3461    o Changes to restore differentiability of code w.r.t. previous tag
3462      (mostly adding new routines to make list and replacing
3463      pressure by totPhiHyd).
3464    o Updated and merged grdchk package
3465      - has both ADM and TLM checks
3466      - works for single- and multi-proc.
3467      - output cleaned
3468      - worked successfully for parallel DIVA
3469    o genmake:
3470      - Adding -platform=SP4
3471      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3472    o Modif. for DIVA:
3473      ctrl_unpack should not be called in intermediate DIVA interval.
3474      (similar thing would apply for active files such as
3475      tbar, sbar, psbar, which should not be reinitialised;
3476      only relevant for ecco-branch)
3477    
3478    checkpoint48h_post
3479    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3480    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3481    o Added SEAICE_initialHEFF to pkg/seaice
3482    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3483    
3484    checkpoint48g_post
3485    --- EOS:
3486    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3487      store total Potential in totPhyHyd for diagnostics & EOS.
3488    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3489    --- Pressure/geopotential gradient:
3490    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3491    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3492      ( changes results of global_ocean_pressure )
3493    o NLFS + z-coord.: add eta*Rho' contribution.
3494    o accurate phiHyd when using interface-W at the middle between 2 centers
3495     ( changes results of ideal_2D_oce )
3496    o includes r* 2nd term in potential gradient.
3497    
3498    checkpoint48f_post
3499    Merging from release1_p12:
3500    o Modifications for using pkg/exf with pkg/seaice
3501      - improved description of the various forcing configurations
3502      - added basic radiation bulk formulae to pkg/exf
3503      - units/sign fix for evap computation in exf_getffields.F
3504      - updated verification/global_with_exf/results/output.txt
3505    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3506      (SBO) core products, including oceanic mass, center-of-mass,
3507      angular, and bottom pressure (see pkg/sbo/README.sbo).
3508    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3509      to avoid negative values in shallow regions.
3510      - updated verification/natl_box/results/output.txt
3511      - updated verification/lab_sea/results/output.txt
3512    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3513    o Added useSingleCpuIO option (see PARAMS.h).
3514    o Updated useSingleCpuIO option in mdsio_writefield.F to
3515      work with multi-field files, e.g., for single-file pickup.
3516    o pkg/seaice:
3517      - bug fix in growth.F: QNET for no shortwave case
3518      - added HeffFile for specifying initial sea-ice thickness
3519      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3520    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3521      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3522    o pkg/seaice:
3523      - adjoint-friendly modifications
3524      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3525    
3526    checkpoint48e_post
3527    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3528    o dynamics: change definition of computational domain & adapt mom_fluxform
3529      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3530    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3531        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3532        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3533        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3534        inverted_barometer solid-body.cs-32x32x1
3535      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3536    
3537    checkpoint48d_post
3538    o in preparation for r*:
3539     a) use pre-computed gradient of hydrostatic potential:
3540        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3541     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3542        => affects results of glob_oce_pressure (different truncation error)  
3543      update output.txt of ideal_2D_oce & global_ocean_pressure
3544    
3545    checkpoint48d_pre
3546    o in preparation for r*:
3547      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3548      pass the 2 comp. of the grad. as arguments to momentum S/R.
3549      but for the moment, only used if it does not change the results.
3550    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3551    
3552    checkpoint48c_post
3553    Modifications in treatment of initial flux forcing controls
3554    to avoid extra storing of flux fields.
3555    
3556    checkpoint48c_pre
3557    o Added tidal_basin_2d experiment (currently 1D!)
3558    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3559    
3560    checkpoint48b_post
3561    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3562     (modification to pressure gradient not yet implemented)
3563    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3564      (for U & V) that are used for vertical advection of momentum.
3565    
3566    checkpoint48a_post
3567    o In preparation for r*, use temp. array to compute vertical transport
3568       in flux-form momentum pkg. => change results of few test-exp.
3569      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3570                        lab_sea, natl_box & plume_on_slope
3571    
3572    checkpoint48
3573    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3574    
3575    checkpoint47j_post
3576    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3577    o moved adexch from forward_step to addummy_in_stepping
3578    o added exch in ctrl_map_...
3579    o aveFreq.=0. at end of cost_final to avoid overwrite in
3580      reverse checkpointing loop
3581    o Yet more changes in gmredi:
3582      * adgmredi_calc_tensor
3583        avoiding all recomputation of gmredi_slope_limit
3584      * adgmredi_x/y/rtransport
3585        added flag for excessive storing to avoid recomp. of
3586        u/v/rtans, dTdx/y/z
3587        -> this is not really necessary and very memory-consuming
3588      * adgmredi_slope_psi:
3589        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3590      * gmredi_slope_limit
3591        re-activated full calculation of taperfct for case 'ac02'
3592    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3593    
3594    checkpoint47i_post
3595    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3596    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3597      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3598    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3599    o gmredi: fix few bugs.
3600    
3601    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3602    This will be a good checkpoint to plug into the ecco-branch.
3603    o few modif.'s to get latest version adjointed
3604      (mainly kick out code in ini_linear_phisurf)
3605    o modif's to run adjoint with exactConserv
3606    o case GM_BOLUS_ADVEC should be cleaned
3607      S/R gmredi_slope_psi should be cleaned
3608    o verification/carbon now has exactConserv=.TRUE.
3609    
3610    checkpoint47g_post
3611    o time-average AIM output: becomes independent from statvars time-average
3612      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3613    o After TAF bug fix:
3614      Tested adjoint of gmredi package.
3615      Tests were done with checkpoint47 rather than with latest
3616      checkpoint47f_post since the latter is broken for the adjoint
3617      verification/carbon/ contains both ADM and TLM gradient checks.
3618    Here they are, before they get changed/lost/stolen.
3619    Mostly modif.'s to fix numerical sensitivities.
3620    Gradient checks OK for
3621    - GM_taper_scheme:
3622      * clipping
3623      * ac02
3624      * linear
3625      * glw91
3626      * dm95
3627      * ldd97
3628    - GMREDI_OPTIONS:
3629      * GM_VISBECK_VARIABLE_K
3630      * GM_NON_UNITY_DIAGONAL
3631      * GM_EXTRA_DIAGONAL
3632      * GM_BOLUS_ADVEC
3633    in conjunction with data.gmredi parameters to be checked in
3634    in a few minutes under verification/carbon/code/
3635    
3636    checkpoint47f_post
3637    Merging from release1_p10:
3638    o modifications for using pkg/exf with pkg/seaice
3639      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3640        and SEAICE_EXTERNAL_FLUXES
3641      - pkg/exf CPP options EXF_READ_EVAP and
3642        EXF_NO_BULK_COMPUTATIONS
3643      - usage examples are Experiments 8 and 9 in
3644        verification/lab_sea/README
3645      - verification/lab_sea default experiment now uses
3646        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3647    
3648    checkpoint47e_post
3649    o created a tag prior to creating a branch
3650    
3651    checkpoint47d_post
3652    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3653      at the bottom boundary had an erroneous half slip boundary condition
3654    o added bottom drag and no slip boundary condition capabilities to
3655      oceanic pressure coordinates code
3656    o added new verification experiment global_ocean_pressure, this experiment is
3657      also described in the tutorial section of the manual
3658    checkpoint47d_pre
3659    
3660    checkpoint47c_post
3661    o Added a verification experiment for a global cubed-sphere ocean run
3662      -  verification/global_ocean.cubed32x32x30
3663      -  uses pkg/therm_seaice and pkg/bulk_forcing
3664    
3665    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3666    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3667      when using P-coordinate; only implemented for atmospheric config.
3668    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3669      NOTES: requires option NONLIN_FRSURF to be "#define".
3670    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3671    
3672    checkpoint47b_post
3673    Merging from release1_p9:
3674    o pkg/seaice
3675      - removed GOTO's and added taf directives
3676      - double precision constants to reduce the g77 (Linux)
3677        to F77 (SGI) differences reported in release1_p8
3678    o tools/genmake
3679      - added SGI options
3680    o verification/testscript
3681      - updated to that of checkpoint47a_post
3682    o verification/global_ocean.90x40x15/input/eedata
3683      - modified for SGI f77 compatibility
3684    o verification/lab_sea
3685      - added description of sea-ice model
3686      - added missing matlab routines
3687      - added test of thermodynamics parallelization
3688    
3689    checkpoint47a_post
3690    o new pkg: aim_v23
3691     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3692       for now, keep the same surface forcing as before.
3693     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3694     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3695     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3696    o add diagnostic of surface correction term in monitor output
3697    
3698    o bulk_force and therm_seaice
3699    - Two packages:  bulk_force (Bulk forcing)
3700      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3701    - Earlier integration from Stephaine Dutkiewicz
3702      and Patrick Heimbach.
3703    - Two ifdef statements for compile time,
3704       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3705    
3706    checkpoint47
3707    differentiable version of checkpoint46n_post
3708    o bug fix in quasihydrostaticterms
3709    o * "clean" adjoint code (in terms of extensive recomputations)
3710        can now be obtained for all GMREDI options (i.e. for
3711        - GM_VISBECK_VARIABLE_K
3712        - GM_NON_UNITY_DIAGONAL
3713        - GM_EXTRA_DIAGONAL
3714        - GM_BOLUS_ADVEC )
3715      * However, wrong gradient check problem remains unsolved.
3716      * New CPP options have been introduced for different
3717        tapering schemes
3718    o external_fields_load now part of differentiation list
3719    o pressure needs multiple storing;
3720      would be nice to have store_pressure at beginning or
3721      end of forward_step, e.g. by having phiHyd global (5-dim.)
3722      (NB: pressure is needed for certain cases in find_rho,
3723      which is also invoked through convective_adjustment).
3724    o recomputations in find_rho for cases
3725     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3726    o #define ATMOSPHERIC_LOADING should be differentiable
3727    o ini_forcing shifted to begining of initialise_varia
3728    o Incorporating QNVS line search routines into MITgcm
3729      (this is separate code, and therefore not under pkg)
3730      lsopt/, optim/
3731    o Updated verification/carbon/
3732      - #define GM_VISBECK_VARIABLE_K
3733      - GM_taper_scheme    = 'ldd97'    
3734    
3735    checkpoint46n_post
3736    Merging from release1_p8:
3737    o verification/natl_box:
3738      updating new external_fields_load routine
3739    o New package: pkg/seaice
3740      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3741      The sea-ice code is based on Hibler (1979-1980).
3742      Two sea-ice dynamic solvers, ADI and LSR, are included.
3743      In addition to computing prognostic sea-ice variables and diagnosing
3744      the forcing/external data fields that drive the ocean model,
3745      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3746      The implied surface heat flux is then stored in variable
3747      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3748      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3749      non-local transport term.  Because this call precedes model
3750      thermodynamics, temperature under sea-ice may not be "exactly" at
3751      the freezing point by the time theta is dumped or time-averaged.
3752      N.B.: fairly large differences in accuracy occur across
3753            different platforms/compilers; comparison between
3754            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3755            generated output gives:
3756       T           S           U           V
3757      C D M    c        m  s        m  s        m  s        m  s
3758      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3759      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3760      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3761    
3762      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3763    o GAD:
3764      - generated new common blocks to account for call of
3765        same gad routines with differing traceridentities
3766        (needed to modify tracerIdentity indices in GAD.h)
3767      - generated separate common blocks for case useCubedSphereExchange
3768        (Department of Futurology)
3769      - parameter lists to gmredi_?transport: added tracerIdentity
3770      - added new key indices to tamc.h
3771    o external_fields_load:
3772      - added this routine to TAF list
3773      - needed to make some common blocks global and additional storing
3774        along the same lines as exf package (checkpoint_lev?_directives.h)
3775    o exf:
3776      updated external forcing package
3777      - bug fixes carried over from ecco-branch
3778        (missing OBCS_OPTIONS.h in two routines)
3779      - enable easy to use "no forcing".
3780      - added exf I/O for atmospheric loading
3781      - added exf I/O for runoff data
3782      - transfered scaling between exf <-> MITgcm to exf namelist
3783    o Adding new verification experiment global_with_exf.
3784      This verification experiment is almost identical to the
3785      global_ocean.90x40x15 experiment, except that it uses
3786      the exf (and cal) package instead of the
3787      external_fields_load routine (cf README file).
3788    
3789    checkpoint46m_post
3790    o modified testscript to return -- when there are no lines of "%MON" output
3791    o added new flag "quasiHydrostatic" for QH mode
3792      and new routine quasihydrostaticterms()
3793    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3794      New routine: mom_u_coriolis_nh()
3795    o fixed sign of non-hydrostatic metric terms in u and v equations.
3796      Depend on correct sign of gravitySign.
3797    o added work.pc* to .cvsignore in aim directories using ifc
3798    o introduced flag for controllin non-hydrostatic metric terms
3799    o removed gravitySign from PARM04
3800    o switched to g77/ifc from pgf77 in aim experiments
3801    
3802    checkpoint46l_post
3803    o made convective adjustment work with pressure coordinates:
3804     - changed the direction of k-loop in convective_adjustment.F for the
3805       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3806     - adjusted the reference pressure k-index in convective_adjustment.F
3807     - adjusted the convection condition in convect.F (in analogy to
3808       calc_ivdc.F)
3809     - convective_adjustment no longer computes anything on the halos
3810     - removed the warnings about negative salinity from find_rho.F and
3811       find_alpha.F; instead the new routine look_for_neg_salinity, called
3812       at the beginning of find_rho, find_alpha, and find_beta, does a
3813       check of the entire slice, if CPP-option
3814       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3815    checkpoint46l_pre
3816    
3817    checkpoint46k_post
3818    o fixed the verification/global_ocean.90x40x15 experiment:
3819     - new bathymetry (the world according to A., JMC, and M.)
3820     - new initial fields and forcing fields (*.bin files)
3821     - new POLY3.COEFFS (for the next release one should switch to a full
3822       equation of state: JMD95P or MDJWF)
3823     - fixed several errors and redundancies in the data file
3824     - experiment uses looped cells
3825     - added matlab directory with diagnostic scripts for plotting of output
3826    
3827    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3828     - read AIM physics parameters from a file (data.aimphys)
3829     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3830    
3831    checkpoint46j_post
3832    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3833    o move wVel computation at the end of the time step, in S/R integr_continuity
3834    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3835    o update timeave pkg for wVel diagnostic.
3836    checkpoint46j_pre
3837    
3838    checkpoint46i_post
3839    o Clean up AIM package (and keep the results unchanged):
3840      include CPP_OPTION and use IMPLICT NONE in all routines ;
3841      declare all the variables _RL ; use _d 0 for all numerical constants.
3842      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3843    
3844    checkpoint46h_post
3845    o cleaned up the use of rhoNil and rhoConst.
3846      - rhoNil should only appear in the LINEAR equation of state, everywhere
3847        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3848        and the dynamical equations are all divided by rhoConst
3849    o introduced new parameter rhoConstFresh, a reference density of fresh
3850      water, to remove the fresh water flux's dependence on rhoNil. The default
3851      value is 999.8 kg/m^3
3852    o cleanup up external_forcing.F and external_forcing_surf.F
3853      - can now be used by both OCEANIC and OCEANICP
3854    checkpoint46h_pre
3855    
3856     Added code to convert surface volume flux (fresh water) into
3857     a mass flux when using P coordinates in the ocean (OCEANICP).
3858     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3859    
3860    checkpoint46g_post
3861    o Include a new diagnostic variable phiHydLow for the ocean model
3862      - in z-coordinates, it is the bottom pressure anomaly
3863      - in p-coordinates, it is the sea surface elevation
3864      - in both cases, these variable have global drift, reflecting the mass
3865        drift in z-coordinates and the volume drift in p-coordinates
3866      - included time averaging for phiHydLow, be aware of the drift!
3867    o depth-dependent computation of Bo_surf for pressure coordinates
3868      in the ocean (buoyancyRelation='OCEANICP')
3869      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3870        Theta, Salinity, and Pressure in the parameter list. This routine is
3871        presently contained in find_rho.F. This routine does not give the
3872        correct density for 'POLY3', which would be a z-dependent reference
3873        density.
3874    o cleaned up find_rho
3875      - removed obsolete 'eqn' from the parameter list.
3876    o added two new verification experiments: gop and goz
3877      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3878    checkpoint46g_pre
3879    
3880    checkpoint46f_post
3881    o Enable tangent linear (forward mode) gradient checks:
3882      - extended active file handling to g_... files
3883      - added TANGENT_SIMULATION to theSimulationMode
3884      - extended grdchk package accordingly
3885    o added tangent linear setup in verification/carbon/code_ftl
3886    o added adjoint setup in verification/front_relax/code_ad
3887    
3888    checkpoint46e_post
3889    o Added new equation of state -> MDJWF
3890      - EOS of McDougall et al., 2002, JAOT, submitted
3891      - caveat: the equation of state is only valid for a smaller (more
3892        realistic?) range of values than JMD95P/Z and UNESCO
3893      - added masks to the calculation of pressure in store_pressure
3894      - added more check values for density in check_eos (ini_eos.F), some of
3895        the old check values are out of the range of the MDJWF-eos, so don't
3896        expect perfect matches for those
3897    checkpoint46e_pre
3898    
3899  checkpoint46d_post  checkpoint46d_post
3900  o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and  o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3901    'OCEANICP', also initialised field pressure correctly in ini_eos in the    'OCEANICP', also initialised field pressure correctly in ini_eos in the
# Line 26  checkpoint46c_pre Line 3919  checkpoint46c_pre
3919    
3920  checkpoint46b_post  checkpoint46b_post
3921  o Added new equation of state -> JMD95Z and JMD95P  o Added new equation of state -> JMD95Z and JMD95P
3922    - EOS of Jackett and McDougall, 1995, JPO    - EOS of Jackett and McDougall, 1995, JAOT
3923    - moved all EOS parameters into EOS.h    - moved all EOS parameters into EOS.h
3924    - new routines ini_eos.F, store_pressure.F    - new routines ini_eos.F, store_pressure.F
3925  o Added UNESCO EOS, but not recommended because it requires  o Added UNESCO EOS, but not recommended because it requires

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