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revision 1.75 by jmc, Thu Jun 20 23:52:03 2002 UTC revision 1.1132 by jmc, Thu Jun 25 15:55:40 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    checkpoint61r
8    o pkg/seaice:
9     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
10      1. introduce fields for time step (N-1)
11      2. do not use levels 2 and 3 anymore (but keep them)
12      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
13         includes changes to pkg/thsice/thsice_get_velocity.F,
14         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
15         pkg/obcs/obcs_apply_uvice.F.
16     - completely remove code for leap-frog time stepping for second order
17       advection
18     - adjusted adjoint accordingly;
19       gradient checks have improved by an order of magnitude!
20    
21    checkpoint61q
22    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
23     - the boundary conditions along open boundaries are unclear, because the
24       associated masks are set to zero and are thus treated as closed when
25       applying the slip-boundary conditions.
26     - move initialisation of grid variables from seaice_init_varia to _fixed
27    o adding doc/diags_changes.txt
28    o model/src:
29      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
30       to avoid "_diags" naming if no relation to pkg/diagnostics.
31      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
32       file and only call PLOT_FIELD_XYZ if debugMode=T.
33      remove few PLOT_FIELD_XY calls outside initialisation.
34      remove few unnecessary BARRIER.
35    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
36      of salt_plume package in Southern Ocean
37    o pkg/thsice:
38     - fix hOceMxL in overlap (needed for sea-ice advection);
39       update output of experiment global_ocean.cs32x15.icedyn.
40    o pkg/seaice:
41     - make the (placeholder-)tracer IceAge a little more meaningful
42      by avoiding ridging of age due to convergent ice flow
43     - add diagnostics for surface temperature, atmospheric and oceanic
44       heat flux, and atmospheric and oceanic ice growth
45    
46    checkpoint61p
47    o eesupp (global_max & global_sum):
48     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
49     - remove starting & endding barrier (no longer needed)
50    o pkg/mdsio, writelocal:
51       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
52       (remove the STOP): uses shared buffer IO to store data from all threads
53       and then let master-thread write nThreads tiles.
54    o pkg/mdsio (read/write field):
55     - tiled IO done in 1 piece (all levels at a time);
56     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
57     - multi-threaded: allow to read/write local (non-shared) array
58       (was already working with singleCpuIO ; now works also without);
59       => no longer needs barrier call after reading a file (added inside
60       mds_read/write field).
61     - move barrier calls outside gather/scatter_2d to mds_read/write_field
62    o pkg/obcs/exf
63      - exf_getffieldrec.F: add a few ". _d 0" and
64                            add code to catch the case fldperiod = 0.  
65      - obcs_precribe_read.F: change if statements so that they match
66                              the variable type (_RL)
67      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
68        exf_iprec) as part of namelist EXF_NML_01
69    o pkg/mdsio:
70      - read/write tiled (local) files: read/write 1-level tile chunk at a time
71        (instead of segment of length sNx); expected to speed up tiled IO.
72    o pkg/exch2:
73      - take buffer copy from/to array out of S/R exch2_send/recv into new
74        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
75        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
76      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
77      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
78        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
79        including Topology header file (and common blocks).
80      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
81        remove 2nd exch call in exch2_s3d_rx (no longer needed).
82      - document S/R arg. list (+ update some comments)
83    o pkg/seaice:
84      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
85        temperature and humidity over sea ice based on climatological values.
86      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
87        of LSR (this change is expected to change the results slightly because now
88        it uses slightly difference moduli from the second last LSR solution, but
89        that is more consistent with the stress computations; this part of the code
90        is not tested in the verification experiments)
91      - fix diagnostics for flux of ice in case of B-grid
92      - turn strain rates eij and press into global fields within global
93        common block in SEAICE.h for more straighforward diagnostics
94      - fix diagnostics for principal stress components, press, zeta, eta
95        to give something meaning full
96    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
97      new output (all 4 tests) using default rotationPeriod.
98    o pkg KPP:
99      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
100      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
101        and normal grid from 1 to Nr)
102    o Fix computations of L4rdt in mom_calc_visc.F
103    o eesupp:
104      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
105      should be called before a "stop" if we know that all process are going
106      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
107    
108    checkpoint61o
109    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
110    o model/src/ini_curvilinear_grid.F:
111       compute angleSin/CosC when they are not read from a file
112    o pkg/seaice:
113       add pseudo time stepping for LSOR
114    o pkg/exch2:
115       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
116    o pkg/seaice:
117       Adding separate sea ice albedo, drag coefficients, and HO in Southern
118       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
119    o SingleCpuIO:
120       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
121    o pkg/seaice:
122       put exchanged variable in (local) common block for MPI+Multi-Threads
123       to work (necessary with exch1, and for now with exch2 too).
124    o verification: to get more experiments tested with mpi, mth and mpi+mth,
125      change tiling of:
126       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
127       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
128      update output of exp:
129       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
130       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
131      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
132                       (note: output.txt generated on faulks using only 1 tile)
133    o eesupp & mdsio (SingleCpuIO):
134     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
135       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
136       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
137     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
138     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
139       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
140    o pkg/exch2:
141     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
142       read parameter file "data.exch2" if it exists; otherwise try default regular
143       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
144     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
145       with new code (not to be used, just as a backup solution).
146     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
147       in utils/exch2/input.
148    
149    checkpoint61n
150    o eesupp & mdsio (SingleCpuIO):
151      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
152        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
153        receive real*4 array (instead of real*8) to read/write 32.bit files.
154        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
155         and remove new mapping S/R)
156    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
157      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
158        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
159        when using exch2. Add S/R to map global io-buffer to global model array.
160      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
161    
162    checkpoint61m
163    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
164      and add 3 other S/R for other types (R4,R8,RS).
165      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
166    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
167     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
168     - reduce number of macro definitions (keep only those which are used);
169       can always call directly the corrresponding S/R if needed.
170     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
171       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
172     Fixed wrong type of arg in:
173       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
174       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
175     To fix: global_sum of var in common block is wrong (multi-threaded) in:
176       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
177     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
178    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
179      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
180    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
181    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
182      edges are closed (zero depth); might happen with "blank tiles";
183      for now, disabled if using OBCS.
184    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
185      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
186    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
187      to reduce length of 1.D array print in STDOUT.
188    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
189      + use 48 tiles (16x8): this will allow to test "blank tiles".
190    o start to test MPI + multi-threaded (change testreport to skip tests
191      where number of tiles do not match).
192    o genmake2: add option "-omp" to turn on Open-MP ;
193      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
194    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
195      and keep the original tile numbering. Note: compatible with old
196      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
197    
198    checkpoint61l
199    o Overlaps had been forgotten in calculating ijk keys : fixed
200    o fix cyrus makedepend for gcc 4.4
201    o experiment fizhi-cs-aqualev20:
202      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
203      and generate new output. Note: new output is much closer to the old
204      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
205      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
206    o pkg/fizhi:
207     - change to avoid indices going deliberately over array-bounds
208     - remove unnecessary MPI stuff
209     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
210     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
211       does not go over array-bounds and therefore returns reliable output.
212     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
213       this S/R has 4 output arguments, which are used inside "get_alarm";
214       when it is called with the same variable "ndum" in place of several
215       output arguments, this produces weird side effect inside "get_alarm"
216      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
217       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
218       address) and produces error.
219    o tools/gemake2: (March 27-29 2009)
220      with option "-mpi": link *_mpi files from "MODS" dir (this is what
221      testreport does).
222    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
223    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
224       update lab_sea.lsr & lab_sea.salt_plume results
225    o pkg/seaice:
226      Major overhaul of the LSOR solver: change discretization from original
227      finite differences to finite volume. The old routine is still in the
228      file seaice_lsr.F and can be turned on with the CPP-flag
229      SEAICE_OLD_AND_BAD_DISCRETIZATION
230      Along with this change, the discretization of the strain rates is changed.
231      The same flag turns on the old discretization in seaice_calc_strainrates.F
232      All verification experiments with seaice are affected (except for
233      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
234      results by setting the above flag.
235      Further changes involve changes in defaults:
236      - ALLOW_FLOODING is defined and turned on by default
237      - SEAICEadvSnow = .true. is now the default
238      - SEAICEadvSalt = .true. is now the default
239      - SEAICEadvAge  = .true. is now the default
240      - SEAICE_clipVelocities  = .false. is now the default
241                                         (as per J. Zhang's recommendation)
242      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
243        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
244      - seaice_growth: replace computation of UG by a simple copy from wspeed
245    
246    checkpoint61k
247    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
248      seaice_lsr: fixed a few metric terms,
249                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
250                  add more debugging diagnostics
251      seaice_evp: removed superfluous many metric terms of FV discretization
252                  of stress divergence
253                  affects lab_sea, lab_sea.hb87
254      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
255                  of stress divergence for non-evp solver
256                  (this part is not tested anywhere)
257      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
258                  they were effectively only half slip
259                  affects lab_sea.hb87
260      updated all relevant verification experiments (except lab_sea//output_adm.txt
261        which was left over, but fails at level 7 & 6)
262    
263    checkpoint61j
264    o pkg/seaice: turn a few hard wired parameters into run time parameters
265    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
266      time in seconds as promised by the usints in seaice_monitor and exf_monitor
267    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
268      that are not cubed-sphere grids
269    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
270    o pkg/ctrl:
271      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
272    o non-hydrostatic (calc_gw.F):
273      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
274      update output of exp. global_ocean.cs32x15.viscA4
275    o remove backward compatibility for thetaMin,phiMin
276      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
277    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
278      interpolated wind field not only for curvilineargrid=.true., but also
279      for a rotated grid (rotateGrid=.true.)
280    o pkg/exf: add capability to bypass interpolation for runoff
281      by setting yet another CPP-flag
282    o eesupp/src, B-grid exchange:
283      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
284    o autodiff
285      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
286      allows to switch to single-prec common blocks;
287      corresponding switch occurs in tamc.h, integer isbyte
288      TAF store directivs "byte" and "kind" seem equivalent;
289      Most tamc.h have been updated correspondingly.
290    
291    checkpoint61i
292    o autodiff:
293      fix autodiff_sore/_restore indices for obcs
294      (spotted by I. Hoteit, M. Mazloff)
295    o pkg/autodiff, pkg/ctrl:
296      Add flag to reduce all tapelev I/O to single-prec.
297      In data.ctrl set
298        doSinglePrecTapelev = .TRUE.
299    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
300      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
301    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
302      real fresh water flux (not yet)
303    o pkg/mdsio & rw:
304     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
305     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
306    o pkg/flt:
307     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
308       init_fixed & ini_varia.
309     - clean-up & simplify linear interpolation S/R:
310       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
311     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
312     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
313     - add vert. coordinate & horiz. indices to output files.
314     - change vertical position in initial condition, from index to depth [m].
315     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
316       (easier to get to a curvilinear grid) ; delX,delY no longer used.
317    o pkg/ggl90: a few modifications:
318     - fix bottom boundary condition, and interpolation of KappaE
319       near top and bottom
320     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
321     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
322     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
323    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
324      (maintain temporary backward compatibility, until next checkpoint)
325    
326    checkpoint61h
327    o pkg/diagnostics with "periodic averaging diagnostics":
328      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
329    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
330    o pkg/obcs: fix loop ranges for balancing code
331    o pkg/flt:
332     - improve criteria for finding which tile owns a float.
333     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
334    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
335      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
336      with ocean biogeo)
337    o pkg/flt:
338     - do some cleaning and fix the restart ;
339     - add output.txt in flt_example/results to get this pkg tested.
340    o genmake2: add an EXTENDED_SRC option and flag.
341       for now, cannot be turned on on command line (only through genmake_local)
342    o pkg/mdsio: read/write vector:
343     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
344     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
345       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
346     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
347      (drop to 4 digits matching for grad). But this test does not look very
348      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
349    
350    checkpoint61g
351    o pkg/flt:
352      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
353       + make OPTIONS file more standard.
354      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
355      - fix _BYTESWAPIO CPP-Flag
356      - standard reading of file-parameter "data.flt"
357      - fix argument list of S/R FLT_RESTART
358      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
359    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
360    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
361      a still unfixed compiler/optimization bug
362    
363    checkpoint61f
364    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
365      update results of global_ocean.cs32x15.icedyn test.
366    o move getcon.F from model/src to pkg/fizhi.
367    o pkg/exf: add parameter for extrapolation of temp up to the surface
368       and option to prevent negative evap (in bulk_largeyeager04 only).
369    o Prather Advection scheme: fix tracer conservation for divergent flow
370      (e.g., when using NonLin Free-Surface).
371    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
372    o gmredi (Visbeck-variable-K):
373     - add more parameters to Visbeck-variable-K.
374     - use a 5 points average for dSigmaR in Visbeck-K calculation
375       (more "homogenous": same stencil and same weights as in dSigmaH)
376     - update output of ideal_2D_oce experiment.
377    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
378      (#undef REAL4_IS_SLOW)
379     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
380       coordinate variable
381     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
382       (surface forcing fields), removes some of the functionality
383     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
384     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
385       probably not all: copy _RS surface flux fields to RL field before
386       calling DIAGNOSTICS_FILL
387     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
388       real*4 (CALL EXCH_*_RS) versions.
389     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
390       (generate new output).
391    
392    checkpoint61e
393    o gmredi (Visbeck-variable-K):
394      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
395      - change computation of Visbeck-K where Slope > Smax :        
396        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
397        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
398    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
399      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
400    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
401    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
402      does not become too large (to avoid precision problems in implicit-diffusion
403      solver); update ideal_2D_oce output.
404    o pkg ggl90:
405      - in ggl90_cal.F: compute only one set of visc/diff, used to
406        step forward TKE/T/S/momentum
407      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
408        have Prandlt =1)
409    o gmredi (fm07):
410      - add lower limit on Transition layer thickness + lower limit on 1/lambda
411      - allow to set few more params from data.gmredi
412    o pkg ggl90:
413          - add missing sqrt(2) factor in computation of mixing length
414            scale in ggl90_calc.F
415            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
416    
417    checkpoint61d
418    o adjoint modifs
419      - adapt to new field rhoInSitu
420      - allow to revert from StoreDynVars2D, StoreDynVars3D
421        to individual fields
422        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
423    o store 3-D (in-situ) density in commom block (DYNVARS.h)
424     - save 1 rho computation.
425     - no longer modify T & S inland when using down_slope pkg.
426    o gad_som : allow to switch to SOM advection for T & S without corresponding
427      pickup files (using new S/R: MDS_CHECK4FILE).
428    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
429      (for useSingleCpuIO to work in multi-threaded)
430    o pkg/shelfice:
431     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
432       with SHELFICEtopoFile in data.shelfice
433     - move code for reading ice shelf topography and modifying hFacC into separate
434       subroutines of the shelfice package
435     - separate initialisation of "fixed" and "variable" variables
436     - kTopC is not (yet) replaced by kSurfC, although this is possible
437    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
438    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
439      and rename:
440      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
441      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
442    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
443    
444    checkpoint61c
445    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
446      to add mass source/sink of fluid in the interior (3-D generalisation
447      of oceanic real-fresh water flux).
448    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
449    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
450    o new pkg: down_slope
451      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
452      - presently, modify T & S inland (dwnslp_calc_rho.F).
453        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
454      - implementation for ocean in P-coords not tested.
455      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
456    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
457      (to facilitate conversion of oceanic pkg to p-coordinate).
458    o change FIND_RHO to FIND_RHO_2D :
459      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
460    o new pkg: cheapaml
461    
462    checkpoint61b
463    o exch2:
464      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
465      - no longer depend on the order sequence (N,S,E,W).
466      - 3rd exchange no longer needed (tested with 24 tiles).
467      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
468      - exch_UV_A-grid readily available (but not yet tested).
469      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
470      (both are no longer needed) in exch_uv: no effect in forward run; but
471       get truncation error differences with adjoint exch.
472    o exch2:
473     - change index-bounds storage (moved from target to local tile,
474       more intuitive this way) ; rename/remove some variables.
475     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
476    
477    checkpoint61a
478    o exch2/matlab-topology-generator:
479      fix bug in index bounds for N-S internal exchange (hard to tell if this
480      had any effect on the solution).
481    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
482      is exceeded
483    o testreport: modify syntax of awk, so that it works also with
484      awk, and not only with nawk and gawk
485    
486    checkpoint61
487    o autodiff
488      Change default for TAF usage by removing argument '-nonew_arg'
489      This changes TAF subroutine argument list (ordering of active var.)
490      Omission of this flag leads to incompatibility w.r.t. TAMC
491      To restore TAMC-compatibility, need following modifs:
492      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
493      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
494      Tested TAF version is 1.9.22
495      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
496    
497    checkpoint60
498    --->>> This is the last checkpoint for which generating the adjoint
499    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
500    --->>> by default.
501    --->>> Future checkpoints will ommit this flag by default.
502    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
503    o pkg/grdchk: Add gradient check to etan0 perturbations.
504    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
505    o pkg/autodiff: more flexibility in zeroadj.
506      model/src: modifying do_oceanic_phys.F accordingly.
507    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
508    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
509      special setup of gmredi for which the adjoint is stable
510      enough for parameter optimization.
511    o bridging the gap between eddy stress and GM.
512      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
513          along with a change in CPP option (now ALLOW_EDDYPSI).
514      -> when using GM w/ GM_AdvForm:
515          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
516          is applied either in the tracer Eq. or in momentum Eq.
517          depending on data.gmredi (intro. GM_InMomAsStress).
518      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
519      The key modifications are in model/src/taueddy_external_forcing.F
520      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
521    
522    checkpoint59r
523    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
524      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
525      fix option to read coriolis(@ cell-corner) from files with CS-grid.
526    o pkg/mnc: add some attributes to standard 1D-coordinate variables
527    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
528      mass points, when using mnc for output
529      - add runtime parameter (missing_value, missing_value_int) to override
530        default (which is the value of getcon('UNDEF'))
531    o pkg/mnc: prepare mnc for the actual use of missing values with the
532      diagnostics package: small fix in mnc_cw_readwrite.template and more
533      initialisation of never used fields
534      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
535      versions
536    o pkg/thsice/thsice_ini_vars.F added default initial values so that
537      thermodynamics sea ice solver does not blow up when some initial fields
538      are missing.
539    o move from external_forcing_surf.F to ini_forcing.F
540      the p-coord. hack consisting in using pLoad to set phi0surf ;
541      update output of tutorial_global_oce_in_p (affected @ truncation level).
542    o Freshen up a bit hs94.1x64x5, notably:
543      remove rotationPeriod and tRef=5*0. (adjoint only), and add
544      exactConserv=.TRUE.
545    o pkg/generic_advdiff:
546      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
547      applies to files where Temperature & Salinity 2nd Order moments are used.
548    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
549      this uses a dynamically allocated internal state data structure
550      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
551      and requires a fortran 90 compiler
552    
553    checkpoint59q
554    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
555       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
556    o Refresh tutorial_global_oce_biogeo, notably:
557      - change bathymetry (put back seamounts in ACC, use hFacs)
558      - change EOS (POLY3 --> JMD95Z)
559      - use Bryan-Lewis vertical diffusivity
560      - use multidimensional advection
561      - remove old virtual virtual in dic pkg, now done through ptracer pkg
562      - change a couple of parameters in dic pkg
563    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
564    o pkg/obcs: change default to OBCSfixTopo = .true.,
565      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
566      - replace "debugMode" with "debugLevel .GE. debLevB"
567    o implementation of TAF directives for gchem,cfc,dic
568    o remove "exp5" (replaced by tutorial_deep_convection).
569    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
570      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
571      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
572      --> changes results in exp4, seaice_obcs
573    o tutorial_deep_convection :
574      update the set-up and increase resolution and domain size ; start
575      from pseudo initial conditions = output at t=120mn in order to see
576      something happening when running testreport.
577    o pkg/seaice: add os7mp as an advection scheme
578                  add check for advection schemes
579                  add a flag for restoring T and S underneath sea ice
580    o pkg/my82: add netcdf-support and diagnostics
581    o thsice pkg:
582      - Now hsMax limits snow height by turning it into ice following
583        flooding scheme (and now conserving energy)
584      - Slight rewriting of the formula in thsice_calc_thick.F
585      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
586      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
587    
588    checkpoint59p
589    o gchem / dic / cfc :
590      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
591      - add new parameter files: "data.dic" & "data.cfc" ;
592      - various re-arrangement in initialisation & header file ;
593      - fix tutorial_global_oce_biogeo for multi-threaded test.
594    o pkg/dic: test for "pickup_dic" file when restarting ;
595      if no pickup-file, can restart with a re-initialised pH (same as it did
596      before) providing pickupStrictlyMatch is set to False.
597    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
598      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
599    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
600      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
601    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
602     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
603       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
604    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
605       scheme to use for vorticty-term ;
606     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
607       (with default selectVortScheme, return to original discretisation)
608     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
609    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
610    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
611      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
612      also fix diagnostics VISCAHW & VISCA4W.
613    
614    checkpoint59o
615    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
616    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
617      move a few statemens out the main loop into separate loops
618    o pkg/shelfice:
619      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
620        (kg/m^2/s), does not break tests, because in verification/isomip,
621        rhoConstFresh=rhoConst (by accident)
622      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
623      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
624        new file model/src/seawater.F, so that they are available for all pkgs.
625      - convert potential temperature into in-situ temperature. This changes the
626        isomip tests => update tests
627    o add a flag writePickupAtEnd (default=true) to be able to suppress
628      writing a pickup at the last timestep
629    o tools/mpack-1.6 :
630      - disable automake (not working) and autoconf (not needed).
631      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
632        also cleaner with much less compilation warnings.
633    o pkg/profiles:
634      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
635      (for "less than 32 characters name" compiler requirement)
636    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
637      conditions that have a different sampling frequency than S/T/U/V obcs
638    o pkg/diagnostics (stats-diags):
639      - fix global Min/Max in case 1 processor get only empty tiles
640    o genmake2: replace (4 times)
641         make genmake_tc_1.o >> genmake_warnings 2>&1
642      with
643         COMM="$CC $CFLAGS -c genmake_tc_1.c"
644         echo $COMM >> genmake_warnings
645         $COMM >> genmake_warnings 2>&1
646      to make genmake2 always see the value of CC as specified in the optfile.
647    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
648      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
649      - modify verification advect_cs test to test SOM-advection on CS-grid.
650    o pkg/ctrl:
651      - Rewrite of ctrl_map_ini_ecco.F,
652        introducing a generic routine (ctrl_map_ini_gen.F).
653      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
654    
655    checkpoint59n
656    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
657      number in dedicate array "hdiag":
658      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
659        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
660      - many small changes (integer format) for large number of diagnostics
661      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
662        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
663    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
664      usingSphericalGrid, this allows to define the rotated grid coordinates
665      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
666      geographical coordinates according to the inverse of the rotation defined
667      by the Euler angles, so that Coriolis parameter and online-interpolation by
668      exf works with the geographical coordinates on XC/YC/XG/YG.
669      Naturally, this feature does not work with all packages, so some
670      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
671      profiles), because there the coordinates are assumed to be regular
672      spherical grid coordinates.
673    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
674      - introduce isopycnal diffusion coefficient control.
675    o tools/adjoint_options:
676      - additional control vector components.
677    o pkg/mnc: have mnc create marginally meaning full coordinate variables
678      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
679    o pkg/mypackage:
680      - add example of read/write pickup for state-var ;
681      - add entry points to the main code for state-vars diags & write-pickup.
682    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
683      transitions for useExfYearlyFields
684      - add new subroutine that determines the file to read from for
685        use*YearlyFields = .TRUE. and .FALSE.
686      - add a verification experiment to global_with_exf that tests
687        useExfYearlyFields with USE_EXF_INTERPOLATION defined
688    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
689      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
690      subroutines (which could be generated from a template, because they are
691      almost identical), for now they are included in obcs_prescribe_read.F for
692      simplicity
693    o pkg/exf:
694      - add a little more diagnostic to exf_interp_read (in analogy to
695        mds_read_field, can be turned off with debugLevel < debugLevA=1)
696      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
697        ugly but fast by unrolling short inner loops, inserting a unroll=8
698        directive in routine lagran, and splitting a loop and making do while the
699        outermost loop (the latter requires the intoduction of index arrays)
700    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
701    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
702      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
703    o verification/seaice_obcs: updated for restart test and latest options
704    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
705      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
706      for now this is only available for the C-grid code and also within
707      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
708    
709    checkpoint59m
710    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
711      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
712    o gad_som : fix flux output (& diagnostics) to have same units as other  
713      advection scheme fluxes (was previously multiplied by deltaT).  
714    o added verification/seaice_obcs both to test seaice open boundaries
715      and to provide an example matlab scrpt for generating them
716    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
717    o pkg/salt_plume: clean up salt_plume_frac.F to
718      remove redundancy in PlumeMethod 1 and 4
719    o pkg/kpp: added saltplume diagnostics
720    o pkg/obcs and pkg/seaice:
721      - do not set uice and vice to zero when OB*icefile are unspecified
722      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
723      - moved seaice tracer obcs after call to seaice_growth
724    o pkg/salt_plume: added various options for salt plume depth
725      criterion and for vertical distribution of the salt
726    
727    checkpoint59l
728    o pkg/ptracers: new version of ptracers pickup:
729      read meta file and write only fields which are needed to restart.
730      ( same logic as main pickup file ; also using pickupStrictlyMatch )
731    o pkg/seaice:
732      - add timescale for melting due to warm mixed layer as a means of
733        setting SEAICE_availHeatFrac more conveniently
734      - add a CPP-flag/runtime parameter check for flooding algorithm
735      - reformulated availHeat in seaice_growth.F to be independent of AREA
736    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
737      unit changes
738    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
739    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
740      SX vector computer.
741    o pkg/seaice:
742      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
743        seaice forcing fields can now be read only through pkg/exf
744      - removed some unused halos
745    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
746    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
747      or U/VICE from U/VWIND before computing U/VSTRESS
748    
749    checkpoint59k
750    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
751      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
752    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
753      all experiments pass when compile with un-initialised var. checking option.
754    o added pkg/salt_plume
755    o script to test restart (for now, in MITgcm_contrib/jmc_script)
756    o pkg/seaice: new read/write pickup version.
757      read meta file and write only fields which are needed to restart.
758      ( same logic as main pickup file ; also using pickupStrictlyMatch )
759    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
760    o lab_sea.hb87: modify the domain & update output.hb87.txt :
761      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
762      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
763      process. Fixed here by closing the domain at the Northern boundary.
764    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
765    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
766      a set of consecutive levels in/from a 3-D array.
767    o pkg/ptracers:
768      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
769      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
770    
771    checkpoint59j
772    o in pkgs: dic, obcs, offline, rbcs:
773      standard way to compute coeff. for time interpolation between 2 time reccords
774      which retains full precision (& make results less dependent on compiler).
775      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
776    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
777      packages instead of reading ice cover and wind speed separately
778    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
779     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
780      to allow to compile customized code before the update)
781    o cleaning-up:
782      - fix CPP instruction syntax in pkg/obcs
783      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
784        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
785      - fix some threads issue in IO parts.
786    o pkg/dic:
787      - add tons of "_d 0" (--> much better testreports !)
788       and then update outputs of tutorial_global_oce_biogeo
789    o pkg/mom_fluxform:
790      add a special version of momentum advection intended to conserve momentum
791      next to a bathymetry step or a coastline edge. (default = off = #undef)
792    o new read/write pickup version:
793      - for now, only implemented for main (mdsio) pickup file.
794      - write out only what is needed to restart; merge pickup_nh , pickup_ph
795        and main pickup together.
796      - read meta file; read only what is needed to restart; stop if a field
797        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
798        if it make sense (even if the restart is not perfect).
799      - if no meta file, assume that pickup to read corresponds exactly to
800        a pickup that would currently be written.
801      - read pickup written in the old format (until checkpoint59i) if it
802        recognizes an old meta file (no field-list).
803      - add a meta file in exp. which starts from a pickup: 2 cases:
804        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
805         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
806        b) a meta file describing the content of the associated pickup file
807         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
808    o pkg/mdsio & pkg/rw:
809      - new routine to read a meta file ; new set of routine to read
810        Multiple-fields file (with meta file).
811    o added open boundary conditions capability for seaice
812        HSNOW, HSALT, UICE, and VICE
813    
814    checkpoint59i
815    o adjoint:
816      * fix multiDimAdvection adjoint
817        (partial recomputation problem by TAF for fVerT(:,:,kDown)
818        and comlev1 size definition (maxpass vs. max. number of tracers)
819      * verification/global_ocean.90x45x15 adjoint now tests
820        NLFS and multiDimAdvection using DST3 (=30)
821      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
822    o pkg/kpp: add "_d 0" to real constant (if missing);
823      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
824      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
825    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
826      for internal parameters related to restart process (formerly from PARAMS.h)
827      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
828    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
829      as argument. (only atm2d & obcs write_pickup have not yet been updated)
830    o pkg/monitor:
831      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
832      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
833      - account for deep Atmosphere factor and density factor (anelastic)
834    o added open boundary conditions capability for seaice HEFF and AREA
835    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
836      thermodynamics
837      - requires a little reorganization, which affects the testreport results
838        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
839        so that now the conservative form is tested
840      - add a few comments
841    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
842    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
843    o add new diagnostics to seaice: advective, diffusive fluxes (only for
844      multidim-advection, for scheme 2 they are not filled) and transports,
845      thermodynamic growth rates
846    o change units of EmPmR (inside the code, + within coupling interface)
847      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
848      Affects results @ truncation level (cg2d match) and update output of
849       experiments: lab_sea(6), global_ocean.90x40x15(10),
850      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
851      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
852      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
853      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
854    
855    checkpoint59h
856    o pkg/exf:
857      - improve vectorization by moving if-statement out of loops in
858        exf_mapfields, exf_radiation
859      - exf_bulkformulae.F: introduce 2D fields and vectorize code
860    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
861    o testreport:
862      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
863        monitor & update offline_exf_seaice exp. output.
864      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
865    o pkg/seaice:
866      - bug fix in the evp solver: boundary conditions were affected be
867        masking of zMax/zMin (changes results)
868      - minor bug fix in boundary conditions in seaice_calc_strainrates
869        (changes results for no_slip)
870      - seaice_lsr.F: make interpolation of eta dependent on boundaries
871      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
872      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
873        stress formulation and no-slip boundary conditions
874    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
875      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
876    o pkg/seaice: a first HSALT time stepping equation has been checked in
877    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
878      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
879      without requiring DO-IF statements
880    o pkg/thsice:
881      use continuous power-law function for partition of energy between lateral
882      melting/freezing and thinning/thickening ; old code using step function
883      still available with #undef THSICE_FRACEN_POWERLAW
884      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
885    o testreport: change AD testing : check against results/output_adm.txt
886      using same scripts as for forward test.
887    
888    checkpoint59g
889    o adjoint testing: in preparation for changing testreport:
890      - output format: cost and grad written on separated lines
891      - ad output results in directory "results" (instead of "results_ad")
892    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
893    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
894    o pkg/ecco: allow user defined cost function contributions
895    o testreport:
896      Allow to choose (per experiment) the list of tested output variables
897       and the main variable (used to issue a pass/FAIL ) ;
898      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
899      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
900      Also modify printing of summary:
901       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
902       b) echo the list of tested variables in the individual summary.txt of
903          each experiment.
904    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
905      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
906      (but still depend on the tile decompostion of the domain).
907    o pkg/seaice: change a discretization detail to make the B-grid code
908      "more symmetric". This change is likely to remove all "ridges/leads" that
909      where quasi-aligned with the grid in B-grid solutions. It may also be
910      the solution to the stress coupling issues with the B-grid.
911    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
912      remove .cvsignore from input dir. (since testreport no longer run here).
913    o pkg/thsice:
914     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
915     - fix reshaping of sea-ice just after advection:
916       melt all the ice only if ice-volume is too small.
917     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
918       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
919     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
920    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
921      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
922    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
923      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
924      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
925      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
926      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
927      -> update output.txt
928    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
929     this affects truncation error: -> update output.txt of exp:
930      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
931      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
932    
933    checkpoint59f
934    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
935    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
936      a bounded range (in forward mode)
937    o pkg/ecco, ctrl, autodiff and mom_common:
938     internal parameter controls, completements of implementations
939    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
940    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
941      (not seem any difference in testing results).
942    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
943       at face corners.
944    o pkg/generic_advdiff:
945     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
946      loop range indices for computing vertical advection tendency
947      and do the calculation in the interior only (no overlap) ;
948      for now, only implemented for SOM advection (to save CPU time).
949     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
950    o exch2 adjoint
951      First set of changes:
952      - add exch2 hand-written adjoint templates
953      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
954        This will require cleanup in pkg/autodiff/*.F
955        (changed routines currently kept separate in verif. code/)
956      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
957        that used to hide exch2 or cubed-sphere specific code
958        (commented via 'cph-exch2')
959    o pkg/seaice
960      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
961    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
962       output of global_ocean.cs32x15.thsice .
963    
964    checkpoint59e
965    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
966      for B-grid vector (not yet tested) and C-grid vector (<- only used
967      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
968    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
969      (#ifdef ALLOW_SALT_PLUME)
970    o gather_2d/scatter_2d: removed halo regions
971    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
972      scheme and the corresponding test case (under front_relax dir). For now,
973      only available with Skew-flux form and not yet tested in realistic set-up.
974      adjoint: store directives updated, but gradient checks deteriorated,
975      so maybe GM/Redi adjoint is now broken.
976    o seaice adjoint
977      * add AREA, HEFF, HSNOW as control variable
978        (should not change lab_sea results)
979      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
980    o pkg/seaice:
981      * added computation of saltFlux in seaice_growth;
982        For time being, sea ice salinity is assumed constant
983        contribution of snow flooding to freshening of sea ice is neglected.
984        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
985        defaults to 0.0 in order to maintain backward compatibility.
986        Typical values for SEAICE_salinity are 4 to 10 g/kg.
987      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
988      * added SEAICE_availHeatFrac, which specifies fraction of surface level
989        heat content used to melt or grow ice
990      * commented out cap of HICE: it helps keep ice thinner
991      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
992      * applied OBCS T/S mask to HEFFM sea ice mask
993    
994    checkpoint59d
995    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
996     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
997     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
998    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
999     and change default value of parameter "GM_Small_Number";
1000     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1001       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1002       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1003    o pkg/ecco: cost function when applying pkg/smooth to controls
1004    o pkg/ctrl: add forcingPrecond run time parameter
1005    o pkg/seaice:
1006     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1007     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1008       changes verification/lab_sea
1009     - rearrange implicit part of u-equation in LSR solver to make it easier to
1010       read, understand, and debug. This causes changes at the truncation level.
1011     - fix (serious) bug in the boundary conditions (sign error in the implicit
1012       part) of the LSR solver. Changes all LSR results.
1013     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1014       is initilized with small values - does not change lab_sea results.
1015     - added HsnowFile initialization capability
1016    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1017     initialization of pkg/smooth and application to control vector
1018    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1019    o dependencies: pkg/profiles requires pkg/cal
1020    o pkg/profiles:
1021     - added option ALLOW_PROFILES_GENERICGRID
1022         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1023         that interpolation information (grid points and coefficients) is provided
1024         within the netcdf input files.
1025         -> sample matlab scripts can be found in MITgcm_contrib/gael
1026         that allow you to prepare netcdf input files.
1027     - also modified: cleaner include statements, cleaner error print statements,
1028       cleaner stops when error, and more tests of the netcdf input files consistency.
1029    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1030    o pkg/seaice:
1031     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1032       requires a new routine: seaice_diagnostics_fill.F
1033     - make sure that seaice does not move if not forced (pressure replacement
1034       method, Hibler and Ip, 1995), changes results
1035     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1036     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1037       It is turned off by default (=-1.), because it changes the results.
1038     - make it possible to read AREA from a file, too.
1039    
1040    checkpoint59c
1041    o add S/R and diagnostics for oceanic mixed-layer depth
1042    o move GMRedi call after all vertical mixing schemes (including KPP)
1043    o pkg/thsice:
1044     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1045      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1046    o pkg/obcs:
1047     - bug fix for balance code
1048    o pkg/seaice:
1049      - allow values of SEAICE_elasticParm > 1
1050      - add new parameter SEAICE_evpTauRelax as an alternative
1051        to SEAICE_elasticParm
1052      - make lsr boundary conditions free slip (by default), changes result
1053      - add code for no slip boundary conditions for lsr
1054      - set minimum of zeta to zero (and not 4e8) (changes results)
1055      - add a cap on AREA after advecting AREA if seaice_growth is not called
1056    o change calculation of Visbeck K:
1057      - no longer depend on tapering scheme; instead, compute slope (limited
1058        by GM_maxSlope). this is equivalent to what was comuted before with
1059        clipping or linear tappering.
1060      - fix vertical averaging (wrong by 1/2 level)
1061      - leave the old version (but will not be maintained) within
1062        #ifdef OLD_VISBECK_CALC / #endif
1063      - update output of exp. ideal_2D_oce
1064    o change error catch in calc_r_star to improve vectorization
1065    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1066      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1067    o adjoint:
1068      Re-organized adjoint checkpointing according to Matt Mazloff
1069      (but with modifs/completions/cleanups)
1070      Storing is now bundled into large arrays to optimized I/O
1071      (and second step in cleanup of the_main_loop)
1072    
1073    checkpoint59b
1074    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1075      - export/import (between ocean & coupler) fields needed for ocean DIC.
1076    o pkg/seaice:
1077      - get rid of three more exchanges seaice_calc_viscosities (required
1078        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1079      - bug fix in seaice_ocean_stress (update of lab_sea required)
1080      - reduce loop boundaries to necessary minimum also in seaice_evp
1081      - go back to the old way of computing deltaC/Z as the adjoint likes that
1082        better
1083    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1084      passive tracer to an Age Tracer) + update output.txt
1085    o pkg/exf:
1086      - implement A-grid / C-grid selection for wind-stress input files.
1087      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1088      for now, in exf_bulk_largeyeager04.F only :
1089      - change implementation for case where windspeed + 2. components wind-stress
1090        are read-in. AND use rhoConstFresh to convert evap.
1091    o pkg/seaice:
1092      - use correct EXCH_UV for wind-forcing (on A-grid).
1093      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1094        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1095    o pkg/exf:
1096      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1097      EXF_INTERPOLATION:
1098      - merge global_with_exf/code version of exf_interp_read.F
1099        to the main code ;
1100      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1101        reading the file ; Important: This options needs to be defined to recover
1102        previous code.
1103        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1104      - no longer loose real*8 precision along the way when using exf_iprec=64.
1105    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1106      - change discretisation of evp-solver in order to avoid another exchange
1107        (changes lab_sea) and clean up a little
1108      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1109        help the adjoint (this also changes the results slightly)
1110      - add a few "_d 0" where they had been missing in seaice_evp.F
1111      - cleaning up: remove unused seaice_calc_rhs.F
1112    o pkg/exf: some cleaning-up:
1113      - change various "constants" into runtime parameters
1114      - cleaned-up Large&Yeager04 routine which should eventually
1115        replace exf_bulkformulae.F (changed names of S/R and CPP)
1116        and merged various ALLOW_ATM_WIND options
1117     only used with thsice pkg (in thsice_get_exf.F):
1118      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1119        which are used when useStabilityFct_overIce=TRUE (= the default)
1120      - change default values of ice & snow emissivity and scale downward LW
1121        by ice & snow emissivity.
1122    o pkg/thsice:
1123     fix few little problems, in thsice_calc_thickn.F:
1124      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1125      - melt only laterally if hIce < hThinIce (as the comments say)
1126      and in thsice_extend.F:
1127      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1128      - start to form ice as soon as the minimum ice-volume is reachable.
1129     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1130      and cpl_aim+ocn
1131    o pkg/kpp
1132     - move computation of surface related input fields to KPP into a new
1133       subroutine kpp_forcing_surf.F
1134     - remove wrong (within bi,bj loops) EXCH calls.
1135     - little cleaning (add argument myThid in last position, cvs header ...)
1136     - for now, fix conservation problem by exchanging KPPviscAz (may not
1137       be the best fix)
1138    o pkg/seaice
1139     - check for inconsistent evp parameter/cpp-flag combination
1140     - remove leftover errIO flat for obsolete name list error handling
1141    o OpenAD
1142     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1143    
1144    checkpoint59a
1145    o pkg/seaice: some parameter clarifications and a little bit of clean up
1146    o pkg/thsice: rename run-time parameters:
1147       himin       -> hIceMin
1148       himin0      -> hThinIce
1149       hihig       -> hThickIce
1150       i0          -> i0swFrac
1151       transCoef   -> bMeltCoef
1152       frac_energy -> fracMelting
1153      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1154       with default values (for now) that do not change the results.
1155      remove old version of thsice vars advection in pkg/seaice.
1156    o in FFIELDS.h:
1157      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1158      - make pLoad & sIceLoad always available (but still only used if
1159         ATMOSPHERIC_LOADING is #define).
1160    o pkg/kpp: replaced _KPP_RL with _RL
1161    o bug fixes for vertical diffusivity computations when both KPP and
1162        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1163        are no longer updating the vertical diffusivity array
1164        (passed as argument) but are (re-) setting those arrays.
1165    o pkg/seaice: fix bug in evp solver, while doing that
1166      - change (improve?) discretization of stress computations for both
1167        cgrid-lsr and evp solver
1168      - add a new routine to compute strain rates
1169      - the above changes lab_sea results
1170      - add no slip conditions for evp solver (off by default), lsr-version
1171        may follow
1172      - fix exchange for shear at Z-points (does not change lab_sea)
1173      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1174        (to force the user to pick a time step since there is not "safe" way
1175        of choosing it)
1176      - add principal stress diagnostics
1177      - rearrange fields for evp a little to avoid having to call a: too many
1178        exchanges and b: exchanges for stress trensor components which we do
1179        not have.
1180      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1181        of evp, complete rewrite for lsr case (latter is does not yet work
1182        in all cases)
1183    o pkg/kpp: add code to have mixing in shelf ice caverns
1184      - add myThid to all kpp routines (long overdue)
1185    
1186    checkpoint59
1187    o pkg/exf:
1188      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1189        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1190      - move exf header files from lower_case.h to UPPER_CASE.h ;
1191        add missing cvs Header & Name
1192      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1193      - add namelist param. selectStressGridPosition, exf_monFreq
1194      - retire many _CLIM routines, and remove data.exf_clim
1195        + params moved to data.exf
1196        + climsst, climsss now handled by exf_set_gen, i.e.
1197          climss?period=0 refers to constant field,
1198          climss?period=-12 to monthly forcing
1199      - split up namelists in data.exf
1200    o pkg/seaice:
1201      - remove seaice_exch and seaice_exch_uv
1202      - remove superfluous exchange of theta
1203      - add myThid to seaice_budget_ocean/ice
1204      - add new interface for atmospheric wind forcing (C-grid only)
1205        + new routine
1206        + two new field (taux, tauy for stress over ice)
1207        + removed one global field (DAIRN) for C-grid case only
1208    o pkg/thsise
1209      - 2nd set of modifs for thsice adjoint in conjunction with exf
1210    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1211    
1212    checkpoint58y_post
1213    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1214      vertical diffusivity, similar to that in MOM4; turned on using
1215      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1216      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1217    o Added capability for 3D specification of background vertical diffusion
1218      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1219      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1220      "data" file that contains the 3D vertical diffusivity coefficients.
1221    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1222      - add code within pkg thsice to advect & diffuse sea-ice fields
1223      similar to (and will replace) what has been added in  seaice_advdiff.F,
1224      but: - conserving Mass, Heat & Salt.
1225           - better when using non-linear advection scheme (not yet fully tested)
1226           - can also be used in atmospheric set-up (for now, only the diffusion).
1227    
1228    checkpoint58x_post
1229    o IO option for global-file compact format:
1230      - add options when generating topology (utils/exch2/matlab-topology-generator)
1231      - add I/O capability (pkg/mdsio).
1232      - adapt utils/matlab/rdmds.m to read this format.
1233      for now long-line format not yet supported by pkg/mdsio (& exch2).
1234    o shelfice: add a few diagnostics
1235    
1236    checkpoint58w_post
1237    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1238      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1239      (and replace horiVertRatio in NH code).
1240      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1241                         and tutorial_plume_on_slope (sensitive to truncation)
1242    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1243      directly to drive seaice model (C-grid only)
1244    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1245     - reintroduce computation of wind from stress,
1246     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1247       mass points to avoid tau = 0
1248     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1249    o rdmnc.m: make it work with "global" files created with gluemnc
1250    o rdmnc.m : some improvements in dealing with singleton dimension
1251      (tested on all testreport mnc output files).
1252    o genmake2: disable pkg/profiles if netcdf test fails.
1253    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1254    o move call to cal_readparms up to make calendar parameters/variable available
1255      to all packages
1256    
1257    checkpoint58v_post
1258    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1259      useDynP_inEos_Zc tested.
1260    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1261    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1262      and portions thereof.  See read_cs.txt for description and examples.
1263    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1264      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1265      following the great-circle arc between those 2 points.
1266    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1267      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1268    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1269     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1270     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1271     - still needs work (not working with some options ; efficiency to improve)
1272       and serious testing.
1273     - use this scheme for temperature & salinity in 2 advection test exp.:
1274       advect_xy & advect_xz, respectively.
1275    
1276    checkpoint58u_post
1277    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1278    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1279    o testreport: add option "-skipdir" to skip some test.
1280    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1281      momentum calculation.
1282    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1283    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1284      remove checkpoint.F and the_correction_step.F (no longer used);
1285      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1286    o add option (linFSConserveTr) to correct for tracer source/sink due to
1287      Linear Free surface
1288    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1289    o pkg/thsice: fix reading mnc-pickups
1290    
1291    checkpoint58t_post
1292    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1293    o pkg/mdsio:
1294     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1295       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1296       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1297     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1298     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1299       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1300     - new S/R (to replace MDSWRITEMETA), which allows to write more
1301       informations (variable names, time ...) to meta files.
1302     - modify rdmds.m to give back the meta file content.
1303    o pkg/diagnostics: change vertical interpolation to be safer, and more
1304       flexible (define p-levels to interpolate to in data.diagnostics);
1305      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1306       diagnostic pointer.
1307    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1308    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1309    o fix multi-category seaice:
1310     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1311       SEAICE_MULTICATEGORY
1312     - fix short wave heat flux
1313    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1314       and allow to use EVP solver. Change forward lab_sea: test both EVP
1315       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1316    o Initial check-in of lab_sea adjoint
1317      (very similar to natl_box_adjoint/code_seaice)
1318      * used C-grid and EVP solver
1319      * used KPP, GM/Redi
1320      * uses inAdExact=.TRUE.
1321      * gradient checks fail for both ADM and TLM
1322        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1323        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1324        issue is related to forward mismatch between g77 an ifort
1325    o pkg/seaice: overhaul of thermodynamics
1326     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1327     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1328     - move a few global fields out of SEAICE.h into seaice_growth.F and
1329       make them 2D (FICE/QNETO/ ...)
1330     - remove FO (it is the same as QNETO)
1331     - introduce a few local fields to avoid modifying external fields such
1332       as atemp, etc.
1333    
1334    checkpoint58s_post
1335    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1336      changed exf_set_gen.F so that
1337        genperiod=0 means input file is one time-constant field and
1338        genperiod=-12 means input file contains 12 monthly means
1339    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1340      this affects truncation error ; generate new output file for exp. which
1341      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1342        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1343        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1344        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1345        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1346        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1347    o start implementation of deep-atmosphere and anelastic formulation
1348    o verification: remove 2nd copy of input files and use script "prepare_run"
1349      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1350    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1351    o profiles: fix for multithreaded case
1352    
1353    o diagnostics: rename few diags:
1354      s/'PRESSURE'/'RCENTER '/g
1355      s/'TICE    '/'oceFreez'/g
1356      s/'TAUX    '/'oceTAUX '/g
1357      s/'TAUY    '/'oceTAUY '/g
1358      s/'SWFLUX  '/'oceQsw  '/g
1359      s/DIFx/DFxE/g
1360      s/DIFy/DFyE/g
1361      and add few ocean-forcing diagnostics:
1362      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1363    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1364      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1365      as actual snow thickness.  It now refers everywhere to effective snow
1366      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1367    
1368    checkpoint58r_post
1369    o modifications to pkg/seaice/growth.F, which change results of
1370      lab_sea experiment: fixes pertain to melting snow over open water, to
1371      masking EVAP under sea ice, and to using the correct AREA variable for
1372      computations of EVAP, PRECIP, HSNOW, and GHEFF
1373    o add ability to read bathy, salt, and theta using MNC (off by def)
1374    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1375      both are turned off by default and do no change any results
1376    o seaice advection with pkg/thsice: a step toward the use of non-linear
1377      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1378    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1379      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1380      in natl_box (affects results @ truncation level: update output.txt)
1381    o multi-threading and IO:
1382      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1383      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1384        (needed to work with SingleCpuIO): tested in all verif. exp.
1385    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1386      affects the results (but none of the verification test uses this scheme).
1387    o Adding some pkg/diagnostics capability to pkg/seaice
1388      (will certainly be subject to changes)
1389    o ctrl: adding new control variables:
1390      lwflux, lwdown, evap, snowprecip, apressure, runoff
1391    
1392    checkpoint58q_post
1393    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1394      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1395      high_res_cube configuration by 4% on Columbia.
1396    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1397      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1398      dynamical allocation (seems to work in multi-threaded).
1399    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1400      single CPU io) so that TAF does not have to see EESUPPORT.h
1401    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1402    
1403    checkpoint58p_post
1404    o obcs: stop if obcs is used with useCDscheme = .true.
1405    o shelfice:
1406     - fix a sign error so that no slip at shelfice interface works
1407     - remove stop for combination non-hydrostatic code and shelfice. That does
1408       not mean, that the results are correct, but at least they are numerically
1409       stable
1410    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1411    o added adjoint exch routined for all exch*3d* routines
1412      and updated flow directives
1413    
1414    checkpoint58o_post
1415    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1416      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1417    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1418      and clean-up reading/writing of pickup files.
1419    o fix local version of read/write pickup (NH part) in rotating_tank/code
1420    o simplify EXCH interface:
1421     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1422     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1423    o added the regrid package
1424    o shelfice:
1425     - add a simple boundary layer scheme to reduce noise
1426     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1427    
1428    checkpoint58n_post
1429    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1430       local variable (not in common block).
1431    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1432      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1433      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1434        to work with SingleCpuIO.
1435    o add "_d 0" to real constant of pkg/cfc subroutines ;
1436       update exp. cfc_exemple & tutorial_cfc_offline output files.
1437    o multi-threading and IO:
1438      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1439        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1440      - barrier before and after reading.
1441      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1442      - avoid using MDS_WRITELOCAL for LAND pkg output.
1443      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1444        common-block variables ; Allows multi-threading with master-thread IO.
1445    o change default MAX_NO_THREADS from 32 to 4 ;
1446      and stop cleanly when MAX_NO_THREADS is too small.
1447    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1448    
1449    checkpoint58m_post
1450    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1451       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1452    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1453       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1454       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1455    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1456        add MITgcm_tutorials (= code + all the tutorials)
1457    o ecco, option to compute cost for total ssh (mean+anom)
1458    o consistent with addition of ptracer and ssh in pkg/profiles
1459    o profiles: adding ptracer and ssh
1460    o testreport: change multi-test output-file name
1461      (from output.txt.{name} to output.{name}.txt)
1462    o profiles: now ok for mutli-tiles case
1463    o seaice: add 4 parameters for different advection schemes for area,
1464      (effective) seaice thickness, enthalphy, and snow height. Their default
1465      is the standard parameter SEAICEadvScheme
1466    o calc_gw:
1467     - add cosFacU in zonal viscous flux (harmonic.visc.).
1468     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1469       of tutorial_plume_on_slope.
1470    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1471    o calc_gw: true flux-form, account for horizontal grid spacing.
1472      update rotating_tank results, but not plume_on_slope (affected at
1473      truncation level, 11 digits).
1474    
1475    checkpoint58l_post
1476    o calc_gw:
1477     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1478     - remove side-drag for now (need to fix it); update plume_on_slope results.
1479     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1480    o commit code to make SST/SSS weights spatially variable
1481      (based on either variable in-situ or variable initial T/S weights)
1482    o pkg/ecco:
1483      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1484        now based on horizontally varying weights wthetaLev, wsaltLev
1485      * cost_averagesflags now returns year indices in addition to day, month
1486      * sflux balance is performed on annual basis
1487        (sflxumm, sfluxmm2, bal_sfluxmm)
1488      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1489        including separate counting and multipliers
1490    o pkg/rbcs
1491      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1492    
1493    checkpoint58k_post
1494    o testreport:
1495     - always build in dir. "build" (if not there, mkdir build instead of building
1496       & running in input)
1497     - run in dir run (if it exists), in build otherwise.
1498     - call prepare_run (if input/prepare_run exists)
1499     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1500    o pkg/exf modifications to interpolation and rotation routines for more
1501       reasonable treatment of North Pole singularity: for tracers North Pole
1502       value is set to northernmost zonal-mean value, for zonal velocity it is
1503       set to zero, and for meridional velocity it is set to northernmost value.
1504    o pkg/exf/exf_check_range.F
1505     - add tile index to diagnostics and move stop statement to the very
1506       end of the routine.
1507    o pkg/diagnostics: (diagnostics_main_init.F)
1508      define title of isomorphic variables according to the current config.
1509    o pkg/thsice with pkg/seaice dynamics:
1510    - fix domain of computation (interior only, required for exf) and do exchanges
1511    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1512    o towards a standard way of dealing with multi-threading in MONITOR
1513      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1514    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1515       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1516    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1517    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1518    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1519       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1520    o tracer advection:
1521     - clean-up and simplify calc_common_factors.F
1522     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1523       advection subroutine (but still not used within DST advection S/R)
1524    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1525    
1526    checkpoint58j_post
1527    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1528      from file (collects calls previously in FORWARD_STEP)
1529    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1530    o adjoint store dir. adjusted accordingly
1531    o genmake2
1532      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1533    
1534    checkpoint58i_post
1535    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1536      on wind stress (SEAICEstressFactor defaults to 1.)
1537    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1538      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1539    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1540      on CS-grid: no longer loosing mass.
1541    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1542    o pkg/ggl90: fix sloppy output and fix a bug
1543    o pkg/seaice: added SEAICEuseEVPpickup parameter
1544      - Set to false in order to start EVP solver with
1545        non-EVP pickup files when using SEAICEuseEVP
1546      - fix sign error in diffusion in seaice_calc_rhs
1547    
1548    checkpoint58h_post
1549    * Modifications for bottom topography control
1550      o replace hFacC by _hFacC at various places
1551      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1552      o add non-self-adjoint cg2d_nsa
1553      o update autodiff support routines
1554      o re-initialise hfac after ctrl_depth_ini
1555      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1556    * Adding verification for 5x5 box (4-layer) bottom topography control
1557    
1558    checkpoint58g_post
1559    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1560       used for mean seasonal cycle, mean diurnal cycle); add an example
1561       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1562    o pkg/ggl90:
1563      - add parameter (minimum surface kinetic energy)
1564      - fix bug (avoiding division by zero)
1565    o couple pkg/thsice to pkg/seaice:
1566      - modify advection in seaice to accomodate new scalar fields to be advected
1567      - only muliDimAdection scheme work with seaice/thsice
1568      - mapping of thsice-variables to seaice-variables, back and forth
1569      - does not break the verification experiments, but does not give the
1570        desired results either
1571    o pkg/seaice
1572      - make (default) second order advection a bit less confusing?
1573    
1574    checkpoint58f_post
1575    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1576      to pkg/seaice):
1577      - new routines thsice_map_exf and thsice_get_exf provide the interface
1578      - add an additional formal parameter to thsice_solve4temp
1579    o pkg/exf:
1580      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1581      - correct Stefan-Boltzmann constant
1582      - new parameter for longwave surface emittance
1583      - separate some stuff from exf_bulkformulae into new routines  
1584        exf_radiation, exf_wind
1585      - add new parameters and constants: longwave emissivity for ocean, ice
1586        and snow, evaporation parameters over ice
1587      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1588        either wind from stress or stress from wind
1589    o pkg/thSIce:
1590    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1591    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1592       and THSICE_CALC_THICKN
1593    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1594    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1595      to make debugging easier.
1596    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1597    o pkg/bulk_force:
1598      - clean-up comments and parameters ;
1599      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1600    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1601      generate new output for test-experiment: aim.5l_cs.thSI
1602    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1603      testreport accordingly
1604    
1605    checkpoint58e_post
1606    o SEAICE_CGRID adjoint done
1607    o R_STAR adjoint implemented.
1608      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1609      * need to sort out init. of h0facc, etc.
1610    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1611      to be able to use it in pure forward.
1612    
1613    checkpoint58d_post
1614    o upgrade simple test-experiment to tutorial example:
1615     step.1: duplicate the experiment and (step.2) will remove the old copy.
1616      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1617      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1618      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1619      tutorial_global_oce_biogeo    <- copy of dic_example
1620      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1621      tutorial_plume_on_slope       <- copy of plume_on_slope
1622      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1623      tutorial_global_oce_optim     <- empty for now (David ?)
1624      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1625     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1626    o correct a sign problem in cost_scat.F
1627    o obcs and ptracers: fix boundary conditions for advections schemes
1628      with larger stencil
1629    o thsice adjoint: start
1630    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1631      completeness
1632    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1633      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1634    o ptracers adjoint:
1635      * avoid extensive recomputatations
1636      * fix missing re-init. of gptr (missed by TAF)
1637    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1638      me to turn off the excessive output to STDOUT that this package produces
1639    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1640      and add those terms in Vector-Invariant formulation.
1641    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1642      if the control period (xx_hfluxperiod etc) is 0
1643    o in profiles pkg, clean routines and fix details
1644    o in ecco pkg, reading ssh data:
1645      fix problem in case the model does not start at iter0=0
1646    o fix mnc-pickup/restart for ptracers
1647    o new package prifiles:
1648      code to compute profile-based cost by Gael Forget
1649      (modifs in ecco, ctrl, autodiff)
1650    o Benign bug fix in initialization (spotted by M. Mazloff) of
1651      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1652    
1653    checkpoint58c_post
1654    o adjoint: finish NLFS adjoint and provide reference output in
1655      verification/global_ocean.90x40x15/results_ad_nlfs
1656    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1657      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1658      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1659      with SEAICE_CGRID defined.
1660    o move calendarDumps from "data" to "data.cal" and clean-up the code
1661      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1662    o add useEXF & useCAL flags (for now, set in hard-coded way)
1663    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1664      (were missing in NH mode, and wrong in quasihydrostatic mode).
1665      waiting for Chris updated version of calc_gw to add those CALLs.
1666    o fix bug in quasihydrostatic S/R ;
1667      add a test for this option: global_ocean.90x40x15.qshyd
1668    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1669      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1670    o add on/off flag useOffLine for package OFFLINE
1671    o seaice:
1672      - modify advection so that it works also on the C-grid
1673      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1674        problem in multi-tile runs with C-grid
1675      - add flags for clipping ice velocities and/or masking solver forcing
1676      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1677        C-grid solver
1678      - added a few comments to seaice_diffusion.F
1679      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1680        are now exclusive)
1681      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1682        required re-ordering the code a little:
1683       + make DAIRN global variable (defined in SEAICE)
1684       + move computation of the viscosities eta and zeta into a new separate
1685         routine (because I need to recompute them in seaice_ocean_stress.F)
1686    
1687    checkpoint58b_post
1688    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1689      update output.txt of exp. aim.5l_cs.thSI
1690    o various mnc cleanups and improvements:
1691      + shrink lookup tables by factor of ~4
1692      + better error reporting when running out of lookup space
1693      + able to handle longer path/file names (up to 500 chars)
1694    o adjoint:
1695      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1696      - TBD: "hidden" mom_vecinv recomp. in dynamics
1697    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1698     (allow to differentiate between forcing components using new integer flags:
1699      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1700     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1701    o ecco
1702      - enable trend removal from SSH anomaly obs.
1703    o adjoint
1704      - a fix for PmEpR when #undef EXACT_CONSERV
1705      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1706      - try to fix "hidden" recomp. in forward_step for NLFS
1707        (NLFS seems broken sometimes after I checked it in)
1708    o seaice:
1709     - add c-grid version of the dynamic solver:
1710       + three new routines that are the c-grid substitute lsr, dynsolver
1711         and ostres
1712       + put a few fields that were local to dynsolver into global common
1713         blocks, so that I can move the computation of stresses etc into
1714         seaice_lsr (saves coding but may break the adjoint).
1715     - replace more hardwired parameters by runtime parameters
1716     - add ice masks that mask the rhs of the implicit solvers where there
1717       is no ice (commented out in seaice_dynsolver, because i am not sure
1718       if this works properly), eventually this should replace the clipping
1719       of ice velocities in seaice_dynsolver to +/-40cm/s.
1720    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1721      include it only where its needed
1722    o move balancing of fluxes before the call of external_forcing_surf
1723    o seaice:
1724      - correct units of turning angles (now they are really in degrees)
1725      - move computation of GWATX/Y out of main routine into dynsolver
1726      - initialize GWATX/Y in seaice_init
1727    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1728      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1729    o seaice: add runtime flags for turning angles (default to zero)
1730    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1731      and trend from exf forcing and ctrl control adjustments
1732    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1733      (since checkpoint57x_post)
1734    o change the default rotation period to 86164.s = the Earth rotation
1735    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1736      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1737    o seaice advection: add code for choosing between the default (2nd order
1738      central differences) and multiDim advection schemes provided by
1739      pkg/generic_advdiff
1740    o seaice:
1741      - removed all references to SEAICE_GRID.h fields from
1742        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1743        (cubed-sphere configuration will change a little)
1744      - grid computations in seaice_init are obsolete now.
1745      - cleaned up code a little so that is easier to read (hopefully).
1746      - added new (better?) discretizations of default advection and diffusion
1747        (turn on with SEAICEuseFluxForm)
1748      - replace 1 in 3d global fields by kSurface in growth.F
1749      
1750    checkpoint58a_post
1751    o seaice:
1752      - bug fix in advect.F
1753    o shelfice:
1754      - separate shelfice load anomaly from pload (breaks with time
1755        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1756        Its default is 0., but it may be computed more cleverly from (unknown)
1757        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1758        done offline. A good approximation of the pressure load anomaly is
1759        necessary to avoid large initial adjustment processes underneath
1760        deep-reaching shelfice.
1761      - small fix in ISOMIP shelfice_thermodynamics
1762      - add more sophisticated thermodynamics of Hellmer (1989), this is
1763        now the default
1764      - give a few constants more intuitive names
1765    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1766      if bulk formulae are used in long integration (especially EmPmR). Turn
1767      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1768      if balancePrintMean, the imbalance that is substracted is printed to
1769      STDOUT.
1770    o fix bug (typo) in obcs_apply_eta.F
1771    o add a new package shelfice which enables us to model the circulation
1772      underneath shelf-ice with draughts of hundreds of meters.
1773     - works
1774     - to do: + include improved thermodynamics
1775              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1776                instead of new field kTopC
1777              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1778                instead of new field R_shelfIce and new code in ini_depth.F
1779                and ini_mask_etc.F?
1780              + adjust vertical mixing schemes?
1781    o seaice pkg:
1782     - add a cpp-flag to include a simple formula for a salinity dependent
1783       freezing point of sea water at the surface
1784     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1785       meridional stresses are now different (and hopefully correct)
1786    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1787       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1788       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1789    o pkg/diagnostics: add options and parameters for regional-statistics
1790       diagnostics ; define regions by reading a region-mask from a file
1791       (might add other options later)
1792    o pkg/bulk_force:
1793     - add option and parameters to use AIM surface-flux formulae.
1794     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1795       others forcing fields (defined in PARM05, parameter file "data") are loaded
1796       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1797     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1798     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1799     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1800       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1801     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1802    
1803    checkpoint58
1804    o add "--embed-source" option to genmake2 which, when the supporting
1805      tools can be compiled (as determined by genmake2) will turn on the
1806      embed_files package which then embeds the entire MITgcm source code
1807      (*.[fFhc] + Makefile) used for the build within the executable
1808      - requested by CNH but off by default
1809      - adds a paltry <9MB to the mitgcmuv executable in most cases
1810      - only writes the output when useEMBEDSRC in eedata is true
1811    o clean up 3-dim. relaxation codes:
1812      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1813      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1814      * Thanks to Tom Haine for testing!
1815    
1816    checkpoint57z_post
1817    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1818      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1819    o fix the pickup behavior for obcs in combination with ptracers
1820    o fix a bug in ptracers_external_fields_load
1821    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1822      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1823    o transfered surface NH pressure to eta field (if exactConserv).
1824    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1825         and update lab_sea output.txt file.
1826    o completing 3-dim. relaxation code: additional term
1827         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1828      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1829      * At compile time, in "EXF_OPTIONS.h" set
1830          #define  ALLOW_CLIMTEMP_RELAXATION
1831          #define  ALLOW_CLIMSALT_RELAXATION
1832      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1833          tauThetaClimRelax3Dim = 15552000.0,
1834          tauSaltClimRelax3Dim  = 15552000.0,
1835      * 3 cases:
1836          1) Use a constant-in-time 3-dim. field
1837          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1838          3) Real-time relax. to time-evolving prescribed field
1839    o Adding Laplacian-type smoothness constraint on
1840      initial and boundary (forcing) controls (ic, bc)
1841      * enable at compile-time via
1842        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1843      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1844      * Absolute scale somewhat unclear so far
1845      * no area weighting was included since no other cost term does so far
1846    
1847    checkpoint57y_post
1848    First step for a NLFS adjoint
1849    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1850    o new init. routines for calc_r_star, calc_surf_dr
1851    o still need to deal with ini_masks_etc
1852    o testreport seemed happy
1853    checkpoint57y_pre
1854    
1855    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1856    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1857    o add new offset feature to offline pkg (plus minor cleanup)
1858    o cfc fixes for final year of integration
1859    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1860      be in GCHEM_OPTIONS).
1861    
1862    checkpoint57x_post
1863    o fix testreport Pb in multiple test experiment.
1864    o cleanup our namelist syntax in verification:
1865      - make it more F95 standards compliant (some work still needed)
1866      - allows the vast majority of our tests to work with gfortran
1867    o Non-Hydrostatic:
1868     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1869     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1870    o Allow to apply AB on T,S rather than on AB(gT,gS):
1871     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1872     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1873       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1874     - need a "clever" read_pickup to restart from the other AB formulation
1875    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1876    o remove some unused variables (reduces number of compiler warnings)
1877    o adjoint
1878      * Disable useVariableViscosity for adjoint for time being
1879        (there are a number of extensive recomputations)
1880      * Initialize certain variables needed for adjoint
1881    
1882    checkpoint57w_post
1883    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1884                 fix the singleCpuIO RS version of MDSWRITEFIELD
1885       and add a WARNING if using globalFiles=T with multi-processors.
1886    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1887      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1888    o tracer advection scheme:
1889      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1890       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1891       was not very convenient).
1892      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1893       (further tests needed for the implicit DST & Flux-Limiter schemes).
1894    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1895      and sRef for convenience, handy, when you want to initialize
1896      ptracers in a large domain with a constant non-zero value. Also,
1897      untangle ptracers_init.F a little.
1898    
1899    checkpoint57v_post
1900    o change dome exp. to use variable viscosity in side-drag terms.
1901    o remove all the files from the cfc_offline test since they are now
1902      incorporated into tutorial_cfc_offline which has been producing
1903      identical results for a few days of testing
1904    o add new parameter: sideDragFactor to enable half-slip-side BC
1905      and change side-drag S/R to use viscosity from mom_calc_visc
1906      (can switch back by setting sideDragFactor=0.); affects results at
1907      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1908       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1909    o vorticity & strain are now computed without masking, to account for
1910      no-slip-side BC in variable viscosity calculation ; mask is applied
1911      anyway later on, before computing advection/coriolis terms.
1912    o modify exp4 to test new obcs support for reading from external files
1913      and for passive tracers
1914    o fix behavior of ptracers_monitor when monitor output is written to a
1915      netcdf-file; still not independent of monitor.F (writes in the same
1916      file).
1917    o change default value of tRef (put a uniform, meaningful value for ocean
1918      & atmos) and initialize sRef (was missing, as Martin mentioned).
1919    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1920      to be proportional to enstrophy dissipation length.  Thus,
1921       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1922      This is now consistent with Smagorinsky and with the manual.
1923    
1924    checkpoint57u_post
1925    o OBCS and PTRACERS: add open boundary support for passive tracers
1926      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1927        OB-values from file; this is not different from the way theta and salinity
1928        are treated
1929      - however, Orlanski-radiation conditions are not supported, and the model
1930        will stop if you use pTracers and Orlanski at the same time.
1931      - beefed up the rountine obcs_external_fields_load: now only those open
1932        boundary values are overwritten with values from files for which there
1933        are really files, otherwise the OB-fields remain untouched. This makes
1934        it possible to use different OBs at different ends of the domain (as
1935        with EXF)
1936    o reduce number of exch calls in shap_filt (s2).
1937    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1938      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1939    
1940    checkpoint57t_post
1941    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1942    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1943      same truncation, independent of the face number: affects affects several
1944      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1945    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1946      note that biharmonic viscosity + no-slip was not tested in any experiment.
1947    o fix bug in non-linear free-surf side-drag ; generate new output for
1948      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1949    o make mnc honor the writeBinaryPrec flag for most kinds of output
1950    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1951    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1952      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1953    o add brackets in multi-terms sum to get same truncation, independent of
1954      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1955      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1956    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1957      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1958      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1959      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1960      Suggested values of viscosity parameters found in mom_calc_visc.
1961      Many new viscosity diagnostics available.
1962    
1963    checkpoint57s_post
1964    o Add clearing-house for viscosity calculations, mom_calc_visc and
1965      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1966      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1967      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1968      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1969      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1970      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1971      ViscAhStrain and viscAhTension are now retired.
1972    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1973    o In response to JMC's bug report, genmake2 now ignores any soft-links
1974      that it finds in the *current* directory when searching for files.
1975      Soft-links found in any other source directories will still work as
1976      they did before.
1977    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1978      a C routine to unlimit the stack size
1979    o mnc-ify pkg/aim snapshot vars
1980    o mnc-ify pkg/land as requested by Daniel
1981    o various changes to mnc including:
1982      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1983      - output can now be grouped so that all files within a group
1984          change the ITER portion of their names in lock-step together
1985      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1986          and works with both EXCH1 and EXCH2 (but needs more testing)
1987      - writing works for all verification test cases w/ g77 on Linux
1988    
1989    checkpoint57r_post
1990    o make MNC variable initialization happen earlier
1991    o add diagnostics for (almost) each term of the momentum Eq.
1992    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1993    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1994    o remove MINIMAL_TAVE_OUTPUT option ;
1995      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1996    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1997      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1998    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1999    o add time-dependent SST, SSS control
2000    o cost terms in ecco/ modularized (new cost_generic.F)
2001    o cost_averages routines are modularized (new cost_averagesgeneric.F)
2002    o new infrastructure for seaice model vs. obs misfits in seaice/
2003      * driver from the_main_loop.F is seaice_cost_driver.F
2004      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
2005      * gradient check in Exp. 6a of natl_box_adjoint/
2006    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
2007      (see README file)
2008    
2009    checkpoint57q_post
2010    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
2011    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
2012      - bug was reported by Jean-Michel and Ian Fenty
2013    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
2014      update exp. cpl_aim+ocn output.
2015    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
2016      Needed for high-res. runs with large global files
2017      to be able to limit tapelev size
2018    o Changed some tests for adjoint:
2019      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
2020      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
2021      * global_ocean.90x40x15/ back to default 3-level checkpointing
2022    o Modifications to enable scripted COMMON to MODULE conversion
2023      * verification/OpenAD/code/ has necessary scripts and description;
2024      * converts, compiles and runs successfully;
2025    
2026    checkpoint57p_post
2027    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
2028    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
2029      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
2030    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
2031    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
2032      (was already the case for dissipation with mom_vecinv,
2033       and also the case for grad.PhiHyd when staggered-timeStep)
2034      This will allow to put dissipation out-off the AB time-stepping.
2035     Unfortunately, affects truncation error. Update output of exp. that "fails"
2036      (cg2d matching number) and leave the others for later: front_relax(10),
2037      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
2038      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
2039    
2040    checkpoint57o_post
2041    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2042      (2) its ready to be documented during the 20050801 DocFest
2043    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2044      for ideal_2D_oce and lab_sea on linux_ia32_g77
2045    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2046      in global1x1_tot/code_seaice_adj to access indices 32, 33
2047      (worth another tag)
2048    
2049    checkpoint57n_post
2050    o adding precip control xx_precip 32
2051    o adding swflux control xx_swflux 33
2052    o Replacing 10 forcing penalty cost routines by 1 generic.
2053    o Implementing partitioning in time-mean and variable adjustment
2054      for atmos. state.
2055    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2056    o in natl_box_adjoint:
2057      * updated exp 1 to 10
2058        (but does not have time-mean vs. variable split results yet)
2059    o updated global1x1/*_seaice_adj/
2060      to incorporate latest changes
2061    o enable useSingleCpuIO for mdsio vector routines
2062      (applies in particular to tapelev I/O)
2063    o removed inefficient K-loop in all active_file*control*.F
2064    
2065    checkpoint57m_post
2066    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2067      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2068    o pkg/exch2: filling of face-corner halo regions is optional
2069      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2070    
2071    checkpoint57l_post
2072     tag before updating tutorials (pre-release-2)
2073    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2074       for output and interpolation of input fields onto model grid)
2075    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2076       Affects results of exp. rotating_tank ; update output.txt.
2077    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2078          and taking the square quantity and/or using a fraction-weight field.
2079    o fix aim_diagnostics_init.F mate numbers.
2080    o add mnc output capability to diagnostics/diagstat and update
2081      our cvsignore files for the ACSII output generated
2082    
2083    checkpoint57k_post
2084    o lab_sea now uses diagnostics package and provides a suite of
2085      new EXF diagnostics output.
2086    
2087    checkpoint57j_post
2088    o exf
2089      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2090        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2091        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2092      * extended diagnostics output
2093        - now includes all EXF variables
2094        - hs, hl moved to common block
2095        - separate S/R for diagnostics, called after ctrl vector is added
2096        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2097        - EXFqnet contains true Qnet (i.e. includes qsw)
2098      * updated verif. lab_sea, global_with_exf
2099      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2100        to ensure that diagnostics sees a true EXFqnet
2101    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2102    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2103      several times with different frequencies.
2104    o mnc-ify the thsice package as requested by Daniel Enderton
2105      - the monitor--MNC output needs work
2106      - many attributes need to be added (most are currently blank)
2107    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2108      - many attributes need to be added (most are currently blank)
2109    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2110    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2111    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2112      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2113         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2114    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2115     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2116    
2117    checkpoint57i_post
2118    o Diagnostics package was changed: diagnostic allocation is now deactivated
2119      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2120    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2121      add 1rst Order upwind vertical Shear.
2122    o add a quick fix for A/B checkpointing in OFFLINE mode
2123    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2124      end-run around the C/Fortran linking horror in eesup/src/timers.F
2125    o added pkg/runclock: allows user to terminate run based on wall clock
2126    o added non-hydrostatic scaling parameter: nh_am2
2127    o pkg/my82: futile attempt to make results compiler-independent by adding
2128      some "_d 0", etc. no effect.
2129    o for mnc output, fill the 'T' coordinate var with myTime and create a
2130      separate 'iter' variable for iteration count
2131    o pkg/diagnostics:
2132      add new capability: output of Global/Regional & per-level statistics ;
2133      tested against monitor output (including land & thSIce) on various exp.
2134    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2135    
2136    checkpoint57h_done
2137      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2138      data.diagnostics, data.gchem, data.ptracers) is done.
2139    
2140    o pkg/diagnostics: prepare for Global/Regional statistics.
2141      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2142    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2143      and rename it: DIFFERENT_MULTIPLE
2144    
2145    checkpoint57h_post
2146    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2147    o pkg/diagnostics: change output frequency, now in seconds (instead
2148      of Nb of iterations). This requires to change data.diagnostics.
2149    checkpoint57h_pre
2150    
2151    o in mnc, let the user create the output dir if both mnc_outdir_date
2152      and mnc_outdir_num are false
2153    o add fflags() to pkg/diagnostics which allows one to specify, on a
2154      per-file basis, the file precision [default behavior is unchanged]
2155    o added diagnostics to pkg/kpp, including computation of mixed layer
2156      depth based on a temperature/density criterion
2157    o updated verification/natl_box to test the new pkg/kpp diagnostics
2158    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2159    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2160    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2161      not mnc -- this mistake was found by JMC and is now corrected
2162    
2163    checkpoint57g_post
2164    o add Adams-Bashforth 3rd Order time stepping:
2165      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2166      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2167    checkpoint57g_pre
2168    
2169    o make lambda[Theta,Salt]ClimRelax spatially varying
2170      (default remains spatially uniform constant based on tau)
2171    o added new control variables
2172      * init. uVel, vVel, etanN
2173      * lambda[Theta,Salt]ClimRelax
2174    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2175      (suggested by G. Forget)
2176    
2177    checkpoint57f_post
2178    o add parameter "baseTime" = model base time = time at iteration zero
2179      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2180      account for baseTime shift
2181    o move Coriolis arrays from PARAMS.h to GRID.h
2182    checkpoint57f_pre
2183    
2184    o mnc-ifying the seaice package
2185    o introduced an alternative length scale calculation for use in the limiting
2186      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2187    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2188    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2189      as well as grad(vort3).  Made it compatible with both approximate form
2190      for the cubed sphere and full form of these gradients.  Added flag
2191      useFullLeith to select between approximate and full form.  
2192    o add "d0" in getcon.F to reduce differences between compilers/platforms
2193      update output.txt of exp. fizhi-gridalt-hs
2194    o change port_rand funtion to allow to set the seed.
2195    o fix obscure MNC bug involving conversion between reals and integers
2196      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2197        new version is now more standards-compliant
2198    o adjoint-related modifications
2199      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2200      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2201      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2202    
2203    checkpoint57e_post
2204    o Adding eddy stress controls a la Ferreira et al.
2205    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2206    
2207    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2208      update output.txt of exp. fizhi-gridalt-hs
2209    o add more "Z" dimensions and associated coordinate vars to MNC
2210    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2211    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2212      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2213      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2214      months and years.  Requires pkg/cal.
2215    o diagnostics: add pickup functionality
2216      - off by default for backwards compatibility
2217      - current version only uses MDSIO -- MNC will be added
2218    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2219    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2220    
2221    checkpoint57d_post
2222    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2223    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2224      output from the diagnostics package
2225    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2226    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2227      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2228    o add coordinate variables to the MNC output from the diagnostics package
2229    o change MNC-flags default value: true when useMNC=TRUE
2230    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2231      the ability (off by default) to read the grid information using MNC
2232    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2233    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2234    o do snap-shot diagnostics at the middle of the time-interval (instead of
2235      at the end).
2236    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2237      new test for AIM with thSIce + slab-ocean
2238    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2239    o move state variable diagnostics to the beginning of the time step ;
2240      (note: still needs some work specially for snap-shot diagnostics)
2241      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2242    
2243    checkpoint57c_post
2244    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2245    o generate new output.txt files on faulks with g77 & the new -ieee option
2246    checkpoint57c_pre
2247    
2248    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2249      update output.txt of exp. global_ocean.90x40x15
2250    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2251      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2252    o add saltFlux(+File) forcing capability with periodicExternalForcing
2253    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2254    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2255    o improvements for the MNC output from DIAGNOSTICS:
2256      - correct handling of the unlimitied dimension
2257      - all dims now have associated coordinate variables
2258      - variables located at U, V, and Corner ("Z") points are now written
2259        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2260        *all* data points are output
2261    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2262    o added pkg/seaice/seaice_monitor.F
2263    o mdsio_readfield.F can now read files visible only to master MPI process.
2264    o pkg/seaice: some test code for ice-modified ocean stress
2265    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2266      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2267      spurious negative numbers for precipitation and humidity.  Will cause
2268      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2269    o pkg/ctrl/
2270      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2271        May be enabled via doPackDiag
2272      *  introduce z-scaling of
2273         + gradient (doZscalePack) and
2274         + control (doZscaleUnpack)
2275    o pkg/mdsio/
2276      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2277      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2278    
2279    checkpoint57b_post
2280    o simplify options in diagnostics_fill arguments (remove weird combinations)
2281    o fix MNC coordinate variables so that they now contain per-face index
2282      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2283      general, EXCH2 grids are only aligned to a "local" coordinate system
2284    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2285    o Implement instantaneous output within pkg diagnostics:
2286      setting a negative frequency in data.diagnostics produces
2287     "snap-shot" output (as opposed to time-average if freq > 0)
2288    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2289      NOTE: change ptracer diagnostics name: use 2 characters to work with
2290            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2291    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2292      becomes the coordinate variable for the 'T' dimension
2293    o add CF-style coordinate variables to MNC
2294      - just a first cut:  numbers are meaningless on the cubesphere and
2295        missing along the T axis but otherwise it works!
2296    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2297    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2298    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2299      this is based directly on what the model compute, so that the content of
2300      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2301    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2302    o clean up build options files for SunOS, in particular
2303      - remove -traditional from xmakedepend
2304      - change -xarch=v9 to -xarch=native for f77
2305      - restore use of make (not gmake)
2306      - add CC=gcc if using g77
2307    o changes per discussion of AM, JMC, & EH3 today:
2308      - move redundant "grid" variables out of "state" -- in preparation of
2309        creating proper CF-style coordinate variables and in recognition
2310        that any/all grid variables can be easily copied (eg. w/NCO) from
2311        the grid files into any of the other NetCDF files
2312      - *always* output grid variables with MDSIO (this will eventually be
2313        changed)
2314      - output MNC grid file if useMNC is true
2315    o every instance of _END_MASTER() has been found and replaced with
2316      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2317      preprocessors
2318    o re-arrange diagnostics pkg initialisation:
2319     - allow each package to extend the available diagnostics list
2320     - add some checking and fix small problems (multi-threaded, ...)
2321     - new S/R diagnostics_fill (replace fill_diagnostics):
2322       look through the short list of active diag. (instead of the long list)
2323       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2324    
2325    checkpoint57a_post
2326    o this set of changes restores TAMC compatibility
2327      tested for global_ocean.90x40x15 adjoint on trough
2328      (what a pain)
2329    
2330    checkpoint57a_pre
2331    o some modifs in tools/build_options for sunos
2332    o call ctrl_pack for ctrl at end for optimcycle=0
2333    
2334    checkpoint57
2335    o add horizontal bi-harmonic viscosity for vertical velocity
2336      - new parameter viscA4W (defaults to viscA4)
2337      - affects only non-hydrostatic code
2338      - to be done: no-slip lateral boundary conditions
2339    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2340    o implement Implicit Vertical advection for pTracers
2341    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2342      (implemented also for implicit vertical diffusion & advection)
2343    o OBCS: extend application of tracer open boundary conditions
2344      to a strip beyond the boundary of width Olx/Oly
2345    o add call monitor to TAF set of required calls (flow directives)
2346      and include in natl_box_adjoint
2347    o untangle a few ifdefs related to cost, ctrl, autodiff
2348      untangel a few ALLOW_ECCO_OPTIMIZATION
2349    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2350      (theta2, salt2 in ecco_cost_weights)
2351    
2352    checkpoint56c_post
2353    o OBCS as control variables
2354      - update ctrl_ad_diff.list, obcs_ad_diff.list
2355      - remove balance of obcs controls from default
2356      - fix index bug nobcs in ctrl_init
2357      - fix dummy fields filen in ctrl_pack
2358      - add dummy weights for obcs
2359    o lsopt: comment out fort.94 output
2360    o optim:
2361      - remove unnecessary header files
2362      - adjusted namelists
2363      - add xerbla.F to Makefile
2364    o exf:
2365      - multiple modifications of exf_check_range
2366      - unit change in exf_init_runoff from [m/year] to [m/s]
2367    o mdsio:
2368      - i/o-vector change debugLevel from debLevA to debLevB
2369    
2370    checkpoint56b_post
2371    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2372      is called from DO_THE_MODEL_IO
2373      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2374      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2375      - clean up PTRACERS_WRITE_TIMEAVE a little
2376    o add another verification experiment that tests both the cfc-pkg and
2377      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2378      reactive tendencies treated inline with regular timestepping
2379    o testreport previously did a lousy job of comparing small numbers, so
2380      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2381      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2382      testreport.
2383    o ptracers_monitor: bug fix for MPI
2384    
2385    checkpoint56a_post
2386    o GCHEM: finish reorganizating the package
2387      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2388        (introduces another 3D-array for each passive tracer, but only if
2389        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2390        gchemTendency is not needed because the timestep is done separately)
2391      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2392      - GCHEM is now---more or less cleanly---separate from PTRACERS
2393      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2394        so clear to me how that should be done in a general way.
2395    o CFC: improve formatting of output in CFC_ATMOS
2396    o PTRACERS:
2397      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2398        that ALL experiments with ptracers enable can be checked. This makes
2399        GCHEM_MONITOR obsolete.
2400      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2401        monitorFreq
2402      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2403    o add PTRACERS (PTR0[1-5]) to testreport output
2404    o exf_check_range:
2405      * default changed to .TRUE.
2406      * will check values for niter0 if debLevA, every timestep if debLevB
2407      * STOP in exf_check_range if 'out of range'
2408      * range chosen generous to allow for potential extema
2409      TBD: a version with stricter range
2410           permitted range would be runtime parameters
2411    o GMredi:
2412      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2413      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2414      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2415    o GCHEM:
2416      - move call to GCHEM_FORCING_SEP, so that it is now called before
2417        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2418      - introduced a useGCHEM runtime flag and applied it everywhere.
2419      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2420        this flag is now only visible within GCHEM-pkg routines.
2421      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2422        be replaced by a 3D array that is computed before thermodynamics; for
2423        this, the tracer ID iTracer had to be included into the parameter list
2424        of ptracers_forcing
2425      - set up forward_step to call gchem_forcing, that will replace
2426        gchem_forcing_int in ptracers_forcing
2427      - cleaning up
2428    o small cleaning of exch2: remove files that are also in eesupp/src
2429    
2430    checkpoint56
2431    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2432    o mnc: cleanup "full" files--fixes out-of-memory problem
2433    o ECCO-GODAE
2434      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2435      * fully merged and updated from SIO code
2436        windstress sign change affects
2437        - exf_inscal_[u/v]stress
2438        - sign of xx_tau[u/v] adjustments
2439        - signs in cost_scat
2440      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2441      * natl_box_adjoint updated and compressed
2442      * 2-level checkpoint switch added
2443        (tested in EXP. 1 of natl_box_adjoint)
2444      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2445    o SVD
2446      * first complete, non-hacked version for SVD calculations
2447      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2448        performed via direct access files admtlm_vector.it????
2449        (via ctrl_[un]pack)
2450      * optimcycle is used for ARPACK iteration counter
2451        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2452      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2453        and add linear transforms where necessary
2454      * controls are initial/final SST, SSS (can be extended; need to check
2455        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2456    o mdsio: filename info to both stderr, stdout
2457    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2458      from sign change
2459    
2460    checkpoint55j_post
2461    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2462      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2463    o add consistent build directories and .cvsignore files to verification
2464    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2465    o make all subroutines 30 or less characters in length for certain older
2466      compilers to work (a thorough search only turns up two routines in
2467      pkg/ptracers)
2468    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2469      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2470    
2471    checkpoint55i_post
2472    o change arrays for total vertical diffusivity (2.D if explicit,
2473      3.D if implicit) ; each ptracer uses its own background value.
2474    o added mnc/NetCDF output capability to ocn_compon_interf
2475      - added bits to verification/cpl_aim+ocn so that it can run on
2476        ITRDA and other clusters without the mpirun "-wd" option
2477    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2478      configuration
2479    o give MNC the ability to create additional files rather than
2480      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2481      - the default is just less than 2GB which is a practical limit
2482        on many systems
2483    o Compute the non-local term using either KPP vertical diffusivity (=default)
2484       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2485    
2486    checkpoint55h_post
2487    o add verification test "vermix"
2488    o remove all the *_ioinc flags and replace with the single global
2489      outputTypesInclusive flag
2490    o allow to set a vertical profile of vertical diffusivity for T & S
2491    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2492    o useMNC moved from data.mnc to data.pkg
2493    
2494    checkpoint55g_post
2495    o Renaming carbon AD experiments to comply with testreport conventions
2496    o Updating adjoint of Held-Suarez hs94.1x64x5
2497    o Fixing directives for non-ECCO forward_step, after ECCO directives
2498      have been fixed to avoid recomp. of do_oceanic_phys
2499      Works well for global_ocean.90x40x15,
2500      but recomp. issue remains for carbon
2501    o Updating adjoint output for natl_box_adjoint after
2502      pkg/ecco has been modified (see taga c55d_post)
2503    
2504    checkpoint55f_post
2505    o rename to timeave_init_fixed
2506    
2507    checkpoint55e_post
2508    o some delicate re-shuffle of store directives to avoid one
2509      extra call of do_oceanic_physics
2510      affects ecco_the_main_loop.F, do_oceanic_physics.F
2511      checkpoint_lev1_directives.h
2512    o NB: this may break global_ocean adjoint temporarily,
2513      but it is clear how to fix it. Will do later, need this now.
2514    
2515    checkpoint55d_post
2516    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2517    o ecco_cost_weights is modified to 1x1 runs
2518    o modifs to allow observations to be read in as
2519      single file or yearly files
2520    o enable to read exf forcing fields as either
2521      single file or yearly files (flag useExfYearlyFields)
2522    checkpoint55d_pre
2523    
2524    o switch between 2-level and 3-level checkpointing
2525    o add ability of MNC to write local and "partial" (eg. 2D slices where
2526      the full 3D field is never actually stored) arrays to NetCDF files
2527      with the correct (that is, the complete multi-dimensional) set of
2528      array indicies
2529      - used in mom_vecinv() to write the diagFreq output
2530      - tested (demonstrated) in verification/aim.5l_cs
2531    o further mnc-ification
2532      - add verification/lab_sea to the list with mnc setups
2533      - fix undefined mnc v-names in cd_code
2534      - add kpp to mnc output (both snapshot and timeave)
2535    o non-hydrostatic code
2536      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2537        in calc_gw.F
2538      - defaults to viscAh
2539      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2540        friction or Leith) in non-hydrostatic mode, as long as there is
2541        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2542    o pkg/cost
2543      extend simple cost functions to treat time mean quantities
2544      (T,U,V) via cost_accumulate_state from cost_tile
2545    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2546        be 2 times larger than the minimum size the advection scheme requires.
2547        now get a perfect conservation of salt in advect_cs test-exp (updated)
2548    o GGL90 (Gaspar's TKE mixed layer)
2549      - add horizontal diffusion of TKE, requires exchanges in
2550        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2551        default. In OPA there is no horizontal diffusion of TKE but the
2552        mixing coefficients are computed from a horizontal average of TKE of
2553        6 points or so. I think that diffusion has a little more physical
2554        justification.
2555      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2556        was in vain)
2557      - mask tke-variable in ggl90_init
2558    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2559    o fix biharmonic diffusion on CS-grid.
2560    o more obcs stuff
2561      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2562        for reading boundary values. This routine is called from
2563        obcs_prescribe_read
2564      - updated obcs_check
2565      - changed sponge layer relaxation parameter units for days to seconds
2566      - turned off sponge layer by default
2567      - changed argument list of OBCS_CALC to myTime+deltaTclock
2568      - fixed about 35 bugs in obcs_external_fields_load
2569    
2570    checkpoint55c_post
2571    o obcs stuff
2572      - new runtime flags useOBCSprescribe, useOBCSbalance
2573      - re-arranged obcs_calc
2574      - moved exf_getobcs to obcs_prescibe_read
2575        obcs_prescibe_read is called after ORLANSKI stuff
2576        and independent of it (executable can contain all).
2577      - updated obcs_check
2578      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2579        These may be necessary only if tangential velocities are
2580        prescribed at OB, not sure, needs testing.
2581    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2582      which simplifies the calls and passes the ifc check-bounds test
2583    
2584    checkpoint55b_post
2585    o add a 2D scalar, Z location, exchange_2 routine.
2586    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2587      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2588      affects advect_cs results (for the wrong reason): update output.txt
2589    o use a more standard discretization for biharmonic viscosity ;
2590     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2591      affects results of dome set-up: update output.txt
2592    o fix gad_advection.F (CubedSphere part), back to version 1.23
2593    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2594    
2595    checkpoint55a_post
2596    o merged code to
2597      * prescribe/read time-dependent open boundaries
2598        (works in conjunction with exf, cal)
2599      * sponge layer code for open boundaries
2600      * each boundary N/S/E/W now has its own CPP option
2601        (healthy for the adjoint)
2602    
2603    checkpoint55
2604    o up-to-date adjoint of previous breaks
2605      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2606      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2607      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2608      - carbon: * remove tr1-related adjoint verification
2609                * add ptracer as control variable
2610    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2611      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2612    
2613    checkpoint54f_post
2614    o in verification/carbin/ remove experiment related to
2615      ALLOW_PASSIVE_TRACER (array tr1 etc)
2616      code_ad/ input_ad/ results_ad
2617    
2618    o add two new packages
2619      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2620        + subject to optimization (memory)
2621      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2622        + subject to reordering (many GOTOs in the original code)
2623        + so far opps is called for every (i,j) point, and then operates in
2624          the vertical; one may want to reorder the scheme in order operate in
2625          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2626          fields)
2627    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2628      - all verification tests compile and run with linux_ia32_g77
2629      - defaults are compatible with current input files--nothing
2630        should change if you were not previously using MNC
2631      - MNC output has been added in numerous places (eg. timeave)
2632        but there are still a few writes not yet do-able with MNC
2633        (this is in progress)
2634      - flags now allow for either/or/both use of MDSIO and MNC and
2635        documentation will soon follow
2636      - numerous small formatting cleanups for ProTeX
2637    o add version info (via BUILD_INFO.h) to MNC and stdout
2638    
2639    checkpoint54e_post
2640    o add two new packages
2641      - pp81 (Packanowski and Philander, 1981), Richardson number and
2642        stratification dependent mixing
2643      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2644      - these scheme operate in a similar manner as KPP (without ghat, of
2645        course), however there is only one diffusivity that is used for both
2646        temperature and salinity (and passive tracers)
2647    o add offline package
2648    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2649      provided by Stephanie Dutkiewicz
2650    o genmake2: add ability to search for C compilers and cleanup test output
2651      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2652    
2653    checkpoint54d_post
2654    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2655    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2656      leading to additional shift by 5 days each year of integration
2657       (i.e. leading to considerable offset over the years)
2658    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2659    o start with no AB and no initial filtering (staggerTimeStep):
2660      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2661    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2662      (external loading & cpl import/export stay in forward_step.F)
2663    o update coupling interface to work with new staggerTimeStep
2664    o change MDSIO ptracers_pickup.
2665    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2666    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2667    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2668    
2669    checkpoint54c_post
2670    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2671      this affects (truncation error) output.txt of test-exp:
2672       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2673    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2674    o change Qnet to always be the net heat flux, (+upward).
2675      affects (truncation error) output of natl_box exp.: updated
2676    o define the max number of passive tracers in PTRACERS_SIZE.h
2677    o start to test mnc routinely in exp0
2678    o add sea-ice loading (sIceLoad) as a new forcing field.
2679    
2680    checkpoint54b_post
2681    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2682       impressive on Altix and Opteron systems)
2683    o diagnostics can now write NetCDF files through the mnc package
2684    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2685    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2686    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2687      affects (truncation error) output of lab_sea & natl_box exp.: updated
2688    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2689    
2690    checkpoint54a_post
2691    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2692    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2693    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2694    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2695      + internal_wave (shift in writing cg2d_ini_res)
2696    checkpoint54a_pre
2697    
2698    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2699      - modified verification/lab_sea and natl_box_adjoint accordingly
2700    
2701    checkpoint54
2702    checkpoint53g_post
2703    o prepare splitting of thermodynamics: store convect.counter in common block
2704    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2705      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2706    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2707    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2708    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2709    o restore adjointability
2710    
2711    checkpoint53f_post
2712    o modifications that affect AIM experiment results (update output.txt):
2713      - no advection of S at top interface Nr (pkg/generic_advdiff)
2714      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2715    o AIM pkg:
2716      - include stability function into surf.Flux derivative relative to Tsurf
2717      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2718    
2719    checkpoint53e_post
2720    o merged cylindrical coord configuration
2721    o added rotating_tank experiment
2722    checkpoint53e_pre
2723    
2724    checkpoint53d_post
2725    o faulks upgraded: re-generate output.txt that have changed:
2726       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2727    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2728    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2729    o added Sadourny discretization of Coriolis
2730      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2731      - re-enabled use of omega3 (useAbsVorticity)
2732    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2733      vector-invariant equations
2734      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2735    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2736      hopefully without new bugs
2737      - still to do: biharmonic friction for non-hydrostatic w
2738    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2739    o regenerated output for global_ocean_ebm (using -ieee)
2740    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2741      of mom_common/
2742      - simple re-arrangement of instructions within computing loop
2743    checkpoint53d_pre
2744    
2745    checkpoint53c_post
2746    o new version of coupler for AIM+thSIce and Ocean models
2747     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2748     - land: change Evaporation of snow
2749     - aim with thSIce: fix bug in snow-precip.
2750    o changes to calc_gw.F
2751     - bug fix for w^2 term near the bottom boundary
2752     - (hopefully) improve the lateral slip boundary condtions for use with
2753        partial/looped cells
2754      - because the bug fix changes two verification experiments anyway (exp5
2755        and plume on slope), change the lateral boundary condition from half slip
2756        to the value of no_slip_sides
2757    o ebm package wasnt quite up to the parallel task. Fixed that.
2758    o Adjoint of EBM package + verification
2759      * TLM OK
2760      * ADM not sufficient accuracy yet (needs further testing)
2761    
2762    checkpoint53b_post
2763    o Commiting new energy balance model to repository
2764      * package is pkg/ebm
2765      * verif. is verification/global_ocean_ebm
2766      * references are in ebm_driver.F
2767    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2768    C        Global thermohaline circulation. Part I:
2769    C        Sensitivity to atmospheric moisture transport.
2770    C        J. Climate 12(1), 71-82
2771    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2772    C        Global thermohaline circulation. Part II:
2773    C        Sensitivity with interactive transport.
2774    C        J. Climate 12(1), 83-91
2775    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2776    C        Destabilization of the thermohaline circulation
2777    C        by atmospheric eddy transports.
2778    C        J. Climate 7(12), 1870-1882
2779    o Will need long integration testing.
2780    checkpoint53b_pre
2781    
2782    o created pkg/mom_common in preparation for variable viscosity code
2783    o renamed and split ini_mnc_io
2784    o pkg/land: only liquid water can diffuse or run-off
2785    o AIM using land: soil wetness availability account for snow
2786    o added printMapIncludesZeros to EEPARMS namelist
2787    
2788    checkpoint53a_post
2789    o restore TAMC compatiility for exf_constants.h
2790      (no usage of _d in .h)
2791    o Additional storing in KPP in an attempt to fix
2792      TAMC problem with adjoint of KPP code.
2793      (no success...)
2794      Identical code works fine with TAF.
2795    o Fixed verification/natl_box_adjoint experiments.
2796      Initial conditions for Experiments 4 and 5 are now
2797      set to "SEAICE_initialHEFF=0", which is more reasonable,
2798      and hence gives results closer to that of Experiment 2.
2799      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2800    
2801    checkpoint53
2802    o stable checkpoint with up to date adjoint
2803      TLM tests only run for 1st grdchk at the moment. Its unclear if
2804      this is a code problem or a problem with resetting code for g_
2805      variables that is being autogenerated wrong.
2806      Otherwise:
2807       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2808       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2809         are both still in chaos following their security messes.
2810    
2811    checkpoint52n_post
2812    o various build (mostly genmake2) changes including:
2813      - ability to build/run more easily within Cygwin and MacOS X
2814      - more complicated Makefiles with a stronger dependence on Gnu Make
2815    o pkg/seaice modifications
2816      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2817        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2818        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2819      - changed proxy for geostrophic velocity and updated
2820        verification/lab_sea/results/* accordingly
2821      - removed ADI dynamic solver from pkg/seaice
2822      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2823        they caused a segmentation fault under certain circumstances
2824      - removed unused field WATR
2825    o bug fix in exf-package:
2826      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2827         now reflect that.
2828    o small fixes in the cal-package:
2829      - set reference date to first of January for the 'model'-calendar
2830      - failing of cal_CheckDate in cal_FullDate now actually results in a
2831        warning
2832    o small modifications in exf-package to increase flexibility:
2833      - change climtempfreeze from a constant to a runtime parameter that
2834        is specified in data.exf_clim (default = -1.9)
2835      - introduce runtime parameter windstressmax (default = 2.0) that is
2836        specified in data.exf
2837    o fix in pkg/thsice:
2838      - update Evap (Tsf changes) to be consistent with Latent heat flux
2839      - maintain snow precipitation unchanged (even if Tsf >=0).
2840     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2841    
2842    checkpoint52m_post
2843    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2844      this does not change any of the results, because myIter=0 in swfrac always
2845      lead to jwtype=2 (the default anyway), but the call makes little sense
2846      as a default
2847    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2848    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2849      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2850    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2851    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2852    o extending useSingleCpuIO option to work with new exch2 I/O format
2853      - old-style, missing-tile I/O is still accessible by defining CPP
2854        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2855    o monitor package can write to NetCDF files and/or STDOUT
2856    o fix re-definition bug in MNC_GRID_INIT_ALL()
2857    o doc/api_reference added
2858      - a framework for building an API Reference Manual using all
2859        the "protex" comments embedded in the code
2860      - see pkg/generic_advdiff, pkg/mnc for examples
2861    o MNC:
2862      - make myThid the last argument for all subroutines
2863      - new default for the grid files: NO halos
2864      - add useMNC and other run-time flags
2865      - separate per-file-group handling of the unlimited dimension
2866      - early initialization of MNC w/ flags read at the eeboot stage
2867        and lookup tables set in initialize_fixed
2868      - write all MNC output to a freshly-created directory
2869    o thermodynamics sea-ice (thsice) is now tested with testreport.
2870    o test exp. advect_cs: use the standard cs32 grid ; update output.
2871    o Added functionality to grdchk:
2872      pick global i,j,k position (or nearest wet) where to perform check.
2873    
2874    checkpoint52l_post
2875    o new land formulation:
2876      a) use ground enthalpy as prognostic variable to ensure exact
2877         energy conservation.
2878      b) account for water temperature and for latent heat of freezing
2879         in all processes (rain, run-off, ground storage)
2880      c) compute surface and ground temperature implicitly.
2881    o aim_v23 modification for new land model:
2882      a) Treat separately land / ocean / sea-ice surface fluxes
2883         to allow implicit computation of land & sea-ice surface temp.
2884      b) add snow precipitation.
2885    checkpoint52l_pre
2886    
2887    o fix problem (when 1 tile is empty) in min/max monitor.
2888    o fix bug in timeAve (u,vZetatave in common block)
2889    o no restoring terms under ice for pkg/seaice
2890    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2891    o bug fix for pkg/seaice pickups
2892    o change MNC call locations and add coordinate attributes
2893    o mask vorticity at the corner ; affects global_ocean.cs output
2894    o fix ini_curvilinear_grid ; test CS experiments with mpi
2895    o aim.5l_cs: modify sea-ice fraction input file ; update output
2896    o exf: Adding simple range check routine for exf fields after read
2897    
2898    checkpoint52k_post
2899    o removed top-level directory "diags"
2900      - we migrated these functions to pkg/timeave a long time ago
2901    o fixed bug introduced in pkg/monitor
2902    o accuracy ctrlprec = 32 insuffient for gradient checks using
2903      averaged fields (I/O via cost_averages)
2904      -> use ctrl.h in active_file*.F to control I/O precision.
2905    o paramter list of CALL ADTHE_MAIN_LOOP
2906    o added initial do_the_model_io to ecco
2907    o set all ...Freq to zero after cost_final
2908      taveFreq, dumpFreq, pChkptFreq
2909    o MAIN and ECCO differentiability restored
2910    
2911    checkpoint52j_post
2912    o fix nchklev in tamc.h for global_ocean...
2913    o Bringing flow and store directives up-to-date
2914    o Really weird thing!
2915      call do_the_model_io from the_main_loop with parameters
2916      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2917      TAF places a faulty re-call of initialise_varia
2918      after cost_final call which should not be there!
2919    checkpoint52j_pre
2920    
2921    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2922      error messages
2923    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2924    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2925      debug output
2926    o modfied mdsio_writefield.F to handle non-global files under exch2
2927    o update AIM Cubed-Sphere exp (aim.5l_cs):
2928      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2929    o update AIM Equatorial Channel exp:
2930      use standard aim_v23 pkg and change the SST fields to be more realistic.
2931    o globalFile now works with exch2
2932    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2933      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2934    o limit timeave output for hi-res integrations
2935    
2936    checkpoint52i_post
2937    o removed CPP_EEOPTIONS.h from verification/*/code
2938    o updated the tiling for global_ocean_pressure
2939    checkpoint52i_pre
2940    
2941    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2942      the old pkg/aim).
2943    
2944    checkpoint52h_pre
2945    o shortened offending lines in exch2_send_rx?.template
2946    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2947    o genmake2: add build & execute test for NetCDF code
2948    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2949      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2950    o added useSingleCPUIO flag to monitor.F and mon_out.F
2951    o added temporary hack for sea-ice dynamics on the cube:
2952      metric terms are ignored and it is assumed that
2953      there is no sea-ice on cube faces 1, 2, 4, and 5.
2954    
2955    checkpoint52f_post
2956    o added exch2 cube routines to pkg/exch2
2957    o modified hs94.cs-32x32x5 to use it
2958    o added new grid files to hs94.cs-32x32x5
2959    checkpoint52f_pre
2960    
2961    checkpoint52e_post
2962    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2963      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2964    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2965      to work with implicit vertical advection and AB ;
2966    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2967    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2968     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2969    checkpoint52e_pre
2970    
2971    o fix bug in impldiff when Nr=1 or Nr=2.
2972    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2973    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2974    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2975      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2976    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2977    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2978    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2979    
2980    checkpoint52d_post
2981    o re-tiled many expts to allow comparison in multi-processor mode
2982      - updated output accordingly
2983      - changed hs94.128x64x5 to use intial T from file rather than use the
2984        random number generator
2985    o add infrastructure in model routines for fizhi and gridalt packages
2986    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2987    o changes to permit hi-res, cubed-sphere, configuration
2988      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2989      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2990      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2991        of surface winds for the cube
2992      (A verification experiment, based on global_ocean.cs32x15, but with
2993       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2994       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2995       complete with example surface forcing files and matlab scripts to look
2996       at the output and compare it with that of global_ocean.cs32x15.)
2997    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2998       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2999       to conform to the common rule.
3000    o check-in the first version of the coupler + interfaces for multi-components
3001       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
3002       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
3003       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
3004       - ocean and atmos. share the same horizontal grid (no interpolation).
3005       - exchanges between component and coupler is done in forward_step
3006    o new verification experiment, cpl_aim+ocn:
3007       coupled ocean - AIM atmosphere on cs32 grid.
3008    
3009    checkpoint52d_pre
3010    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
3011    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
3012    
3013    checkpoint52c_post
3014    o Fixing OPTIONS files for use of exf:
3015      - ALLOW_ECCO not needed
3016      - ECCO_CPPOPTIONS.h should not be included from
3017        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
3018        as has been the case in the past
3019      - All cal/exf related options are currently set in
3020        single header file. Should remain so until we
3021        agree on a consistent new policy.
3022    o Removed all CPP options for cal package.
3023      cal has no more CPP options.
3024    o modified STOREs in GAD_ADVECTION
3025    o corrected key comp. for passkey
3026    
3027    checkpoint52b_post
3028    o new version: "thsice" of thermodynamic sea-ice pkg:
3029     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
3030     - modify fluxes but do not change theta directly;
3031     - light cleaning of bulk_force pkg (still needed with thsice).
3032     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
3033       + output_thsice.txt to test thsice & bulk_force pkgs.
3034    o put back grid & coriolis monitor output.
3035    checkpoint52b_pre
3036    
3037    o call "do_the_model_io" at the beginning (=> dump initial state)
3038    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
3039    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
3040      (need info on NUMBER_OF_PTRACERS)
3041    o missing PTRACERS headers in some routines
3042    o default tamc.h in pkg/autodiff supposed to crash
3043      to ensure proper customization
3044    
3045    checkpoint52a_post
3046    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
3047      - moved surfaceTendencyTice from pkg/seaice to main code
3048      - subroutine FREEZE_SURFACE now limits only surface temperature
3049        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
3050        => new output.txt for global_ocean.cs32x15 & global_with_exf
3051      - keep the old version of FREEZE for backward compatibility;
3052        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
3053      - corresponding modifs for TAF directives
3054    o added surface flux output variables to TIMEAVE_STATVARS
3055    o time-averaged output for pkg/ptracers
3056    o fix problem with ECCO-related divided adjoint
3057      snapshot file was missing some ad-variables,
3058      but no warning issued by TAF
3059    
3060    checkpoint52a_pre
3061    o some bug fixes for #undef REAL4_IS_SLOW
3062    
3063    checkpoint52 = ecco_c52_e35
3064    o after testing adjoints of checkpoint51u_post
3065    
3066    checkpoint51u_post
3067    o this is the post-merge tag of the ecco-branch
3068      (needs another clean checkout and re-testing)
3069    o various natl_box_adjoint configs and results
3070      but no input fields
3071    o obcs adjoint not yet merged!
3072    o adding ECCO global 1x1 and 2x2 degree configs
3073    o updated/extended some store directives for seaice
3074    o pkg/ecco now containes ecco-specific part of cost function
3075    o top level routines the_main_loop, forward_step
3076      supersede those in model/src/
3077      previous input data.cost now in data.ecco
3078      (new namelist ecco_cost_nml)
3079    o in ctrl/ cleaned some cross-dependencies and updated CPP options
3080    
3081    checkpoint51t_post
3082    o this is the pre-merge tag of the ecco-branch
3083    
3084    checkpoint51s_post
3085    o cleanup: removed various obsolete #define-s
3086    o pkg/grdchk
3087      - renamed 'ph-grd 3' to 'grad-res'
3088      - merged from ecco-branch
3089        (remaining bug fixes for obcs gradient checks)
3090      - additional high-precision output for testreport
3091        (grep for 'precision_grdchk_result')
3092    
3093    checkpoint51r_post
3094    o cleaned up or removed CPP_OPTIONS.h files
3095    o updated results for some of the tests to reflect the new
3096      optfiles (-ieee: -O0 instead of -O3)
3097    
3098    checkpoint51q_post
3099    o cd_code:
3100      - moved cd_scheme.F -> cd_code_scheme.F
3101      - separate read_checkpoint from cd_code_ini_vars.F
3102      - separated cd_code part from write_checkpoint
3103      - updated AD_SOURCE, generated .flow
3104      - added CD_CODE_VARS.h to the_main_loop
3105      - Moving cd_code specific store dir.s to pkg/cd_code
3106    o ctrl package totally restructured
3107      - pack/unpack now optional and decoupled from
3108        xx_/adxx_ I/O
3109      - ctrl_pack/unpack cleaned
3110        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
3111      - confined inclusion of AD_CONFIG.h to where necessary.
3112    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
3113    
3114    checkpoint51p_post
3115    o create initial cd_code package
3116      - WARNING: the initialization of fields within packages
3117        is broken because INI_FIELDS (where READ_CHECKPOINT is
3118        called) is called *before* PACKAGES_INIT_VARIABLES.
3119        This seems to be backwards since
3120        1) its important to initially zero the entire field including
3121           the "halo" region
3122        2) zeroing needs to be done *before* reading pickup info
3123           and the pickup call might or might not happen in any
3124           particular run
3125      - this needs an overhaul for R2
3126    o cleanup verification/*/code/GMREDI_OPTIONS.h
3127    o cleanup testreport
3128    
3129    checkpoint51o_post
3130    o bringing AD-related verif's up to date with genmake2
3131      - carbon/
3132      - global_ocean.90x40x15/
3133      - hs.94.1x64x5/
3134      - (front_relax/ )
3135    o (more) consistent directory structure for AD-related verif.'s
3136    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
3137    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
3138    o bug fix in find_alpha.F for MDJWF:
3139      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
3140        change rho -> rho-rhoConst
3141      - replace call find_rho to find_rhonum
3142    o initialisation of rFlx extended to full array (required by TAF)
3143      and shifted to thermodynamics
3144    o removed PTRACERS.h in ptracers routine
3145    o added surfacetendencyPtr to S/R parameter list pracers_forcing
3146    o Correcting initialisations for fVerU, fVerV.
3147    o helping TAF to recognize dependency on kUp for
3148      fVerU, fVerV
3149    o Replacing delZ by delR in pkg/ctrl/
3150    checkpoint51o_pre
3151    
3152    o undid all of cp51 pending some cleanups and discussion
3153    o added the [#include "AD_CONFIG.h"] statement to all files that need
3154       it for adjoint/tl #defines
3155     o re-worked the build logic in genmake2 to support AD_CONFIG.h
3156     o removed tools/genmake since it no longer works
3157    
3158    checkpoint51n_post
3159    o modifications to make FREEZE flux visible to pkg/kpp
3160      - moved surfaceTendencyTice from pkg/seaice to main code
3161      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
3162      - subroutine FREEZE now limits only surface temperature
3163        (this means new output.txt for global_ocean.90x40x15,
3164         global_ocean.cs32x15, and global_with_exf)
3165    o added surface flux output variables to TIMEAVE_STATVARS
3166    
3167    checkpoint51n_pre
3168    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
3169    o added [#include "AD_CONFIG.h"] to all files that use the following
3170      defines:
3171      - ALLOW_ADJOINT_RUN
3172      - ALLOW_TANGENTLINEAR_RUN
3173      - ALLOW_ECCO_OPTIMIZATION
3174    
3175    checkpoint51m_post
3176    o incorporating changes to get TAMC/TAF working in genmake2
3177      - added new TAMC/TAF targets to the Makefile
3178      - various cleanups related to package handling
3179      - these changes should have no impact on the forward model
3180    
3181    checkpoint51l_post
3182    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
3183     - faster algorithm for cal_addtime.F
3184     - higher precision arithmetic, where needed
3185     - pkg/exf *startdate variables changed from calendar date to
3186       model integration time
3187    
3188    checkpoint51l_pre
3189    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
3190    o enable to apply restoring on S & T only in a latitude band.
3191    o update output (external_forcing_surf modif. change truncation errors)
3192       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
3193    
3194    checkpoint51k_post
3195    o change default to: useNHMTerms=.FALSE.
3196     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
3197       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
3198     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
3199        exp1, ideal_2D_oce
3200     - change data file of oceanic exp (leave the results unchanged for now)
3201       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
3202    o set gravitySign automatically according to the vertical coordinate used
3203      (and change sign: back to "logical" value: +1 when R increases downward)
3204    o added an include barrier to the default CPP_OPTIONS.h and
3205      removed the #include "PACKAGES_CONFIG.h" from it
3206    o fix a bug in mom_fluxform (from chk51j_post)
3207    
3208    checkpoint51j_post
3209    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
3210    o adjusted some flow directives (dynamics, thermodynamics)
3211    o added cubed-sphere case to test cost function
3212    o heckpoint_lev?_directives.h now include
3213      pkg-specific directives, whenever those are enabled.
3214    o Moving pkg-specific flow directives to corresponding pkg
3215      Moving pkg-specific differentiation list to corresponding pkg
3216      Moving pkg-specific checkpoint-lev storing to corresponding pkg
3217      ---> conventions are
3218           - pkg_ad.flow
3219           - pkg_ad_diff.list
3220           - pkg_ad_check_lev?_dir.h
3221    
3222    checkpoint51i_post
3223    o merge of the branch-genmake2
3224      - knowingly breaks the older genmake
3225      - automatic generation of all ALLOW_${PKG_NAME} defines
3226      - new testreport supersedes older testscript
3227    o large number of package inclusion and header cleanups
3228    checkpoint51i_pre
3229    
3230    o new output for adjoin of global ocean vector invariant
3231    o fix for checkpoint of thermodynamic seaice and bulk_force
3232    o Steph gchem various cleanups
3233    
3234    checkpoint 51h_pre
3235    o fixed some single quotes
3236    o modify gchem pkg to be more versatile
3237    o modifications to clean up dic pkg
3238    o add pkg/cfc
3239    
3240    checkpoint51g_post
3241    o provide links for ARPACK and ADM*TLM
3242    o start removing verification/vero/
3243    o update AD-related stuff
3244      (in particular some IF-statements in model/src/ routines)
3245    o adding to verification/global_ocean.90x40x15/ adjoint of
3246      vector invariant setup
3247    
3248    checkpoint51f_post
3249    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
3250    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
3251      of tracer Green's fucntions for ocean inversion project.
3252    
3253    checkpoint51f_pre
3254    o Added on-the-fly spatial interpolation capability
3255        "USE_EXF_INTERPOLATION" to pkg/exf.
3256      - This is a temporary Cartesian-grid hack until
3257        the super-duper ESMF coupler becomes available.
3258      - See verification/global_with_exf/README for usage example.
3259      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
3260        flags and modified pkg/seaice accordingly.
3261    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
3262        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
3263        non-local transport term.
3264    
3265    checkpoint51e_post
3266    o pkg/mom_vecinv:
3267      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
3268      - add time-ave diagnostic of vorticity advection.
3269    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
3270    o atmospheric geopotential: - include water vapor effect;
3271                                - use p^kappa in p* scaling.
3272    o land pkg: read initial state from files.
3273    o AIM : add stratospheric drag in the upper level
3274    
3275    checkpoint51d_post
3276    o change function ILNBLNK (=> last non-blank char.) to return zero
3277      (instead of the string length) when the string. char is empty
3278    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
3279    o modif's to restore TAMC compatibility
3280      - avoid "_d" constructs in PARAMETER declarations
3281      - avoid interrupting lines by comment lines
3282    o Use cluster local disks for purely local I/O
3283      vs. globally visible disks needed for ctrl stuff
3284      (merged from ecco-branch)
3285      - new active_file_loc... and mdsio_..._loc routines
3286      - affected packages: autodiff, ctrl, grdchk, mdsio
3287    
3288    checkpoint51c_post
3289    o introducing integer flag debugLevel
3290      - debLevZero: suppress all output
3291      - debLevA: standard
3292      - debLevB: equivalent to current debugMode=.TRUE.
3293    o introducing pathname variable mdsioLocalDir for mdsio
3294      that can be specified at runtime
3295      (relevant for cluster I/O to local disk)
3296    `
3297    >>>checkpoint51b_post
3298    adjoint of ptracers
3299    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3300    o extended state in checkpoint_lev?, etc.
3301    o alternative ctrl/cost with tr1 or ptracer
3302    o new comlev1_bibj_ptracers
3303    o new ptracers.flow
3304    o made ptracers_forcing same as external_forcing_s
3305    o added verification for adjoint with ptracers
3306      - adm. grdchk fail so far
3307      - tlm. grdchk OK
3308      - checked tapelev/comlev recomputations: OK
3309    <<<checkpoint51b_pre
3310    
3311    checkpoint51a_post
3312    o added code for biogeochemistry package
3313      - new pkgs: dic, gchem
3314      - new subroutine in ptracers
3315    o modify code for biogeo packages
3316      - in model/src and pkg/ptracers
3317    
3318    checkpoint51
3319    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3320      - autodiff, ctrl, exf, grdchk, seaice
3321      kept separate packages
3322      - cost, ecco, obcs
3323    o updating verification/internal_wave, verification/lab_sea
3324      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3325    
3326    checkpoint50i_post
3327    o Preparing next differentiable checkpoint and sync
3328      of MAIN vs. ecco-branch
3329      - 1st step: this one is differentiable
3330      - 2nd step: next(! not this) checkpoint will have updated packages
3331                  from ecco-branch)
3332    
3333    checkpoint50h_post
3334    o new package "land": provide surface BC for AIM.
3335    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3336    o AIM: use true log-P extrapolation for near surface temp (= as in
3337        F.Molteni paper) ; update aim.5l_cs output.
3338    o New variable in PARM03 for more flexible pickups
3339    o somewhat cleaned package initialisation sequence for
3340      ctrl/ cost/ ecco/ in packages_... routines
3341    
3342    checkpoint50g_post
3343    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3344      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3345      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3346        made the default because of faster convergence than ADI
3347    
3348    checkpoint50f_post
3349    o exf totally restructured
3350      - replaced all exf_set_ routines by one generic exf_set_gen.F
3351        and made sure it's still differentiable
3352      - split exf_getffields.F into new exf_bulkformulae.F
3353      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3354      - updated adjoint/makefile and relevant verif. accordingly
3355    
3356    checkpoint50f_pre
3357     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3358          + change Evap over land. (update aim.5l_cs output)
3359     o added missing .cvsignores and made uniform across expts
3360     o changed configuration of tidal_basin_2d expt
3361     o added pkg/debug functions for tracing code in fatal crashes
3362     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3363     o new fn in pkg/monitor to stop model if solution grows too big
3364     o removed lots of single quotes from comments
3365    
3366    checkpoint50e_post
3367    o make KPP work with PTRACERS
3368     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3369       nearly a copy of kpp_transport_s
3370     - there is no analogue to SurfaceTendencyS, so I have to use
3371       gPtr(of the surface layer) instead
3372    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3373    checkpoint50e_pre
3374    
3375    checkpoint50d_post
3376    o change kpp output from multiple-record state files to single-record state
3377      files analogous to write_state.F
3378    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3379      analogous to the cg2d-related output.
3380    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3381      so that writing to internal file fn (with length 512) fails.
3382    checkpoint50d_pre
3383    
3384    checkpoint50c_post
3385    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3386    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3387    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3388    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3389    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3390    
3391    checkpoint50c_pre
3392    Merging from release1_p13:
3393    o bug fix for pkg/seaice dynamic solver
3394    o Added SEAICE_initialHEFF to pkg/seaice
3395    
3396    checkpoint50b_post
3397    o store u*,v* in gU,V instead of in guNm1,gvNm1
3398    o in order to put the momForcing out of the Adams-Bashforth:
3399      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3400      to timestep.F
3401    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3402    o re-generate output for highly sensitive test-exp:
3403       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3404    
3405    checkpoint50b_pre
3406    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3407    o corrected CPP option mismatch in exf_Bulk... functions for case
3408      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3409    
3410    checkpoint50a_post
3411    o Bug fix for merging between c50 and KPP.
3412      ikey was passed from thermodynamics to kpp_calc via
3413      common block rather than being recomputed in kpp_calc,
3414      in contradiction with new key itdkey.
3415      New key ikppkey created, and tamc.h headers updated.
3416    
3417    checkpoint50
3418    - 2nd step of merge with ecco-branch:
3419      merge changes in ecco-branch back into main trunk
3420    - bug fix in find_alpha
3421    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3422    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3423    - merged some sliced AD support routines
3424    
3425    checkpoint49
3426    merged from ecco-branch:
3427    o exf:
3428      - Enable initialisation of forcing fields to constant
3429        (runtime) values.
3430      - in exf_getffields.F
3431        Reduce i-/j-loop to interior domain, discarding overlaps.
3432        That also fixes wrong TAF-key computations for key_1, key_2
3433        with bulf formulae.
3434      - exf_init.F modify #ifdef for exf_init_evap
3435      - exf_getffieldrec.F, ctrl_getrec.F
3436        The following INT-usages are not safe:
3437          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3438          fldcount = int(fldsecs/fldperiod) + 1
3439        and were modified.
3440    o autodiff: checkpoint_lev...
3441      - updated storing for bulk formulae (some arrays were missing)
3442      - added state for seaice package
3443      - synchronized with main branch
3444    o DIVA:
3445      Modif.s in
3446      - the_main_loop.F
3447      - the_model_main.F
3448      and added cost_final_restore.F cost_final_store.F
3449      o With these changes, it is possible to fully separate
3450        the first forward run to compute the cost function (mdthe_main_loop)
3451        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3452        into separate model executions.
3453        This enables better tuning of DIVA to given queue sizes.
3454      o Loss of cost function value in consecutive DIVA runs is
3455        fixed by storing to 'costfinal' file.
3456      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3457        beginning/end of adjoint integration is accounted for.
3458      The current changes apply to TAF-1.4.26.
3459      TAF has one remaining bug, requiring one manual change
3460      (see MITgcm manual).
3461    o cal: synchronized between MAIN and ecco-branch
3462    
3463    checkpoint48i_post
3464    o Changes to restore differentiability of code w.r.t. previous tag
3465      (mostly adding new routines to make list and replacing
3466      pressure by totPhiHyd).
3467    o Updated and merged grdchk package
3468      - has both ADM and TLM checks
3469      - works for single- and multi-proc.
3470      - output cleaned
3471      - worked successfully for parallel DIVA
3472    o genmake:
3473      - Adding -platform=SP4
3474      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3475    o Modif. for DIVA:
3476      ctrl_unpack should not be called in intermediate DIVA interval.
3477      (similar thing would apply for active files such as
3478      tbar, sbar, psbar, which should not be reinitialised;
3479      only relevant for ecco-branch)
3480    
3481    checkpoint48h_post
3482    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3483    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3484    o Added SEAICE_initialHEFF to pkg/seaice
3485    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3486    
3487    checkpoint48g_post
3488    --- EOS:
3489    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3490      store total Potential in totPhyHyd for diagnostics & EOS.
3491    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3492    --- Pressure/geopotential gradient:
3493    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3494    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3495      ( changes results of global_ocean_pressure )
3496    o NLFS + z-coord.: add eta*Rho' contribution.
3497    o accurate phiHyd when using interface-W at the middle between 2 centers
3498     ( changes results of ideal_2D_oce )
3499    o includes r* 2nd term in potential gradient.
3500    
3501    checkpoint48f_post
3502    Merging from release1_p12:
3503    o Modifications for using pkg/exf with pkg/seaice
3504      - improved description of the various forcing configurations
3505      - added basic radiation bulk formulae to pkg/exf
3506      - units/sign fix for evap computation in exf_getffields.F
3507      - updated verification/global_with_exf/results/output.txt
3508    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3509      (SBO) core products, including oceanic mass, center-of-mass,
3510      angular, and bottom pressure (see pkg/sbo/README.sbo).
3511    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3512      to avoid negative values in shallow regions.
3513      - updated verification/natl_box/results/output.txt
3514      - updated verification/lab_sea/results/output.txt
3515    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3516    o Added useSingleCpuIO option (see PARAMS.h).
3517    o Updated useSingleCpuIO option in mdsio_writefield.F to
3518      work with multi-field files, e.g., for single-file pickup.
3519    o pkg/seaice:
3520      - bug fix in growth.F: QNET for no shortwave case
3521      - added HeffFile for specifying initial sea-ice thickness
3522      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3523    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3524      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3525    o pkg/seaice:
3526      - adjoint-friendly modifications
3527      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3528    
3529    checkpoint48e_post
3530    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3531    o dynamics: change definition of computational domain & adapt mom_fluxform
3532      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3533    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3534        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3535        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3536        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3537        inverted_barometer solid-body.cs-32x32x1
3538      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3539    
3540    checkpoint48d_post
3541    o in preparation for r*:
3542     a) use pre-computed gradient of hydrostatic potential:
3543        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3544     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3545        => affects results of glob_oce_pressure (different truncation error)  
3546      update output.txt of ideal_2D_oce & global_ocean_pressure
3547    
3548    checkpoint48d_pre
3549    o in preparation for r*:
3550      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3551      pass the 2 comp. of the grad. as arguments to momentum S/R.
3552      but for the moment, only used if it does not change the results.
3553    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3554    
3555    checkpoint48c_post
3556    Modifications in treatment of initial flux forcing controls
3557    to avoid extra storing of flux fields.
3558    
3559    checkpoint48c_pre
3560    o Added tidal_basin_2d experiment (currently 1D!)
3561    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3562    
3563    checkpoint48b_post
3564    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3565     (modification to pressure gradient not yet implemented)
3566    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3567      (for U & V) that are used for vertical advection of momentum.
3568    
3569    checkpoint48a_post
3570    o In preparation for r*, use temp. array to compute vertical transport
3571       in flux-form momentum pkg. => change results of few test-exp.
3572      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3573                        lab_sea, natl_box & plume_on_slope
3574    
3575    checkpoint48
3576    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3577    
3578    checkpoint47j_post
3579    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3580    o moved adexch from forward_step to addummy_in_stepping
3581    o added exch in ctrl_map_...
3582    o aveFreq.=0. at end of cost_final to avoid overwrite in
3583      reverse checkpointing loop
3584    o Yet more changes in gmredi:
3585      * adgmredi_calc_tensor
3586        avoiding all recomputation of gmredi_slope_limit
3587      * adgmredi_x/y/rtransport
3588        added flag for excessive storing to avoid recomp. of
3589        u/v/rtans, dTdx/y/z
3590        -> this is not really necessary and very memory-consuming
3591      * adgmredi_slope_psi:
3592        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3593      * gmredi_slope_limit
3594        re-activated full calculation of taperfct for case 'ac02'
3595    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3596    
3597    checkpoint47i_post
3598    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3599    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3600      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3601    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3602    o gmredi: fix few bugs.
3603    
3604    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3605    This will be a good checkpoint to plug into the ecco-branch.
3606    o few modif.'s to get latest version adjointed
3607      (mainly kick out code in ini_linear_phisurf)
3608    o modif's to run adjoint with exactConserv
3609    o case GM_BOLUS_ADVEC should be cleaned
3610      S/R gmredi_slope_psi should be cleaned
3611    o verification/carbon now has exactConserv=.TRUE.
3612    
3613    checkpoint47g_post
3614    o time-average AIM output: becomes independent from statvars time-average
3615      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3616    o After TAF bug fix:
3617      Tested adjoint of gmredi package.
3618      Tests were done with checkpoint47 rather than with latest
3619      checkpoint47f_post since the latter is broken for the adjoint
3620      verification/carbon/ contains both ADM and TLM gradient checks.
3621    Here they are, before they get changed/lost/stolen.
3622    Mostly modif.'s to fix numerical sensitivities.
3623    Gradient checks OK for
3624    - GM_taper_scheme:
3625      * clipping
3626      * ac02
3627      * linear
3628      * glw91
3629      * dm95
3630      * ldd97
3631    - GMREDI_OPTIONS:
3632      * GM_VISBECK_VARIABLE_K
3633      * GM_NON_UNITY_DIAGONAL
3634      * GM_EXTRA_DIAGONAL
3635      * GM_BOLUS_ADVEC
3636    in conjunction with data.gmredi parameters to be checked in
3637    in a few minutes under verification/carbon/code/
3638    
3639    checkpoint47f_post
3640    Merging from release1_p10:
3641    o modifications for using pkg/exf with pkg/seaice
3642      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3643        and SEAICE_EXTERNAL_FLUXES
3644      - pkg/exf CPP options EXF_READ_EVAP and
3645        EXF_NO_BULK_COMPUTATIONS
3646      - usage examples are Experiments 8 and 9 in
3647        verification/lab_sea/README
3648      - verification/lab_sea default experiment now uses
3649        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3650    
3651    checkpoint47e_post
3652    o created a tag prior to creating a branch
3653    
3654    checkpoint47d_post
3655    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3656      at the bottom boundary had an erroneous half slip boundary condition
3657    o added bottom drag and no slip boundary condition capabilities to
3658      oceanic pressure coordinates code
3659    o added new verification experiment global_ocean_pressure, this experiment is
3660      also described in the tutorial section of the manual
3661    checkpoint47d_pre
3662    
3663    checkpoint47c_post
3664    o Added a verification experiment for a global cubed-sphere ocean run
3665      -  verification/global_ocean.cubed32x32x30
3666      -  uses pkg/therm_seaice and pkg/bulk_forcing
3667    
3668    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3669    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3670      when using P-coordinate; only implemented for atmospheric config.
3671    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3672      NOTES: requires option NONLIN_FRSURF to be "#define".
3673    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3674    
3675    checkpoint47b_post
3676    Merging from release1_p9:
3677    o pkg/seaice
3678      - removed GOTO's and added taf directives
3679      - double precision constants to reduce the g77 (Linux)
3680        to F77 (SGI) differences reported in release1_p8
3681    o tools/genmake
3682      - added SGI options
3683    o verification/testscript
3684      - updated to that of checkpoint47a_post
3685    o verification/global_ocean.90x40x15/input/eedata
3686      - modified for SGI f77 compatibility
3687    o verification/lab_sea
3688      - added description of sea-ice model
3689      - added missing matlab routines
3690      - added test of thermodynamics parallelization
3691    
3692    checkpoint47a_post
3693    o new pkg: aim_v23
3694     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3695       for now, keep the same surface forcing as before.
3696     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3697     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3698     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3699    o add diagnostic of surface correction term in monitor output
3700    
3701    o bulk_force and therm_seaice
3702    - Two packages:  bulk_force (Bulk forcing)
3703      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3704    - Earlier integration from Stephaine Dutkiewicz
3705      and Patrick Heimbach.
3706    - Two ifdef statements for compile time,
3707       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3708    
3709    checkpoint47
3710    differentiable version of checkpoint46n_post
3711    o bug fix in quasihydrostaticterms
3712    o * "clean" adjoint code (in terms of extensive recomputations)
3713        can now be obtained for all GMREDI options (i.e. for
3714        - GM_VISBECK_VARIABLE_K
3715        - GM_NON_UNITY_DIAGONAL
3716        - GM_EXTRA_DIAGONAL
3717        - GM_BOLUS_ADVEC )
3718      * However, wrong gradient check problem remains unsolved.
3719      * New CPP options have been introduced for different
3720        tapering schemes
3721    o external_fields_load now part of differentiation list
3722    o pressure needs multiple storing;
3723      would be nice to have store_pressure at beginning or
3724      end of forward_step, e.g. by having phiHyd global (5-dim.)
3725      (NB: pressure is needed for certain cases in find_rho,
3726      which is also invoked through convective_adjustment).
3727    o recomputations in find_rho for cases
3728     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3729    o #define ATMOSPHERIC_LOADING should be differentiable
3730    o ini_forcing shifted to begining of initialise_varia
3731    o Incorporating QNVS line search routines into MITgcm
3732      (this is separate code, and therefore not under pkg)
3733      lsopt/, optim/
3734    o Updated verification/carbon/
3735      - #define GM_VISBECK_VARIABLE_K
3736      - GM_taper_scheme    = 'ldd97'    
3737    
3738    checkpoint46n_post
3739    Merging from release1_p8:
3740    o verification/natl_box:
3741      updating new external_fields_load routine
3742    o New package: pkg/seaice
3743      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3744      The sea-ice code is based on Hibler (1979-1980).
3745      Two sea-ice dynamic solvers, ADI and LSR, are included.
3746      In addition to computing prognostic sea-ice variables and diagnosing
3747      the forcing/external data fields that drive the ocean model,
3748      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3749      The implied surface heat flux is then stored in variable
3750      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3751      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3752      non-local transport term.  Because this call precedes model
3753      thermodynamics, temperature under sea-ice may not be "exactly" at
3754      the freezing point by the time theta is dumped or time-averaged.
3755      N.B.: fairly large differences in accuracy occur across
3756            different platforms/compilers; comparison between
3757            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3758            generated output gives:
3759       T           S           U           V
3760      C D M    c        m  s        m  s        m  s        m  s
3761      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3762      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3763      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3764    
3765      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3766    o GAD:
3767      - generated new common blocks to account for call of
3768        same gad routines with differing traceridentities
3769        (needed to modify tracerIdentity indices in GAD.h)
3770      - generated separate common blocks for case useCubedSphereExchange
3771        (Department of Futurology)
3772      - parameter lists to gmredi_?transport: added tracerIdentity
3773      - added new key indices to tamc.h
3774    o external_fields_load:
3775      - added this routine to TAF list
3776      - needed to make some common blocks global and additional storing
3777        along the same lines as exf package (checkpoint_lev?_directives.h)
3778    o exf:
3779      updated external forcing package
3780      - bug fixes carried over from ecco-branch
3781        (missing OBCS_OPTIONS.h in two routines)
3782      - enable easy to use "no forcing".
3783      - added exf I/O for atmospheric loading
3784      - added exf I/O for runoff data
3785      - transfered scaling between exf <-> MITgcm to exf namelist
3786    o Adding new verification experiment global_with_exf.
3787      This verification experiment is almost identical to the
3788      global_ocean.90x40x15 experiment, except that it uses
3789      the exf (and cal) package instead of the
3790      external_fields_load routine (cf README file).
3791    
3792    checkpoint46m_post
3793    o modified testscript to return -- when there are no lines of "%MON" output
3794    o added new flag "quasiHydrostatic" for QH mode
3795      and new routine quasihydrostaticterms()
3796    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3797      New routine: mom_u_coriolis_nh()
3798    o fixed sign of non-hydrostatic metric terms in u and v equations.
3799      Depend on correct sign of gravitySign.
3800    o added work.pc* to .cvsignore in aim directories using ifc
3801    o introduced flag for controllin non-hydrostatic metric terms
3802    o removed gravitySign from PARM04
3803    o switched to g77/ifc from pgf77 in aim experiments
3804    
3805    checkpoint46l_post
3806    o made convective adjustment work with pressure coordinates:
3807     - changed the direction of k-loop in convective_adjustment.F for the
3808       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3809     - adjusted the reference pressure k-index in convective_adjustment.F
3810     - adjusted the convection condition in convect.F (in analogy to
3811       calc_ivdc.F)
3812     - convective_adjustment no longer computes anything on the halos
3813     - removed the warnings about negative salinity from find_rho.F and
3814       find_alpha.F; instead the new routine look_for_neg_salinity, called
3815       at the beginning of find_rho, find_alpha, and find_beta, does a
3816       check of the entire slice, if CPP-option
3817       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3818    checkpoint46l_pre
3819    
3820    checkpoint46k_post
3821    o fixed the verification/global_ocean.90x40x15 experiment:
3822     - new bathymetry (the world according to A., JMC, and M.)
3823     - new initial fields and forcing fields (*.bin files)
3824     - new POLY3.COEFFS (for the next release one should switch to a full
3825       equation of state: JMD95P or MDJWF)
3826     - fixed several errors and redundancies in the data file
3827     - experiment uses looped cells
3828     - added matlab directory with diagnostic scripts for plotting of output
3829    
3830    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3831     - read AIM physics parameters from a file (data.aimphys)
3832     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3833    
3834    checkpoint46j_post
3835    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3836    o move wVel computation at the end of the time step, in S/R integr_continuity
3837    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3838    o update timeave pkg for wVel diagnostic.
3839    checkpoint46j_pre
3840    
3841    checkpoint46i_post
3842    o Clean up AIM package (and keep the results unchanged):
3843      include CPP_OPTION and use IMPLICT NONE in all routines ;
3844      declare all the variables _RL ; use _d 0 for all numerical constants.
3845      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3846    
3847    checkpoint46h_post
3848    o cleaned up the use of rhoNil and rhoConst.
3849      - rhoNil should only appear in the LINEAR equation of state, everywhere
3850        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3851        and the dynamical equations are all divided by rhoConst
3852    o introduced new parameter rhoConstFresh, a reference density of fresh
3853      water, to remove the fresh water flux's dependence on rhoNil. The default
3854      value is 999.8 kg/m^3
3855    o cleanup up external_forcing.F and external_forcing_surf.F
3856      - can now be used by both OCEANIC and OCEANICP
3857    checkpoint46h_pre
3858    
3859     Added code to convert surface volume flux (fresh water) into
3860     a mass flux when using P coordinates in the ocean (OCEANICP).
3861     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3862    
3863    checkpoint46g_post
3864    o Include a new diagnostic variable phiHydLow for the ocean model
3865      - in z-coordinates, it is the bottom pressure anomaly
3866      - in p-coordinates, it is the sea surface elevation
3867      - in both cases, these variable have global drift, reflecting the mass
3868        drift in z-coordinates and the volume drift in p-coordinates
3869      - included time averaging for phiHydLow, be aware of the drift!
3870    o depth-dependent computation of Bo_surf for pressure coordinates
3871      in the ocean (buoyancyRelation='OCEANICP')
3872      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3873        Theta, Salinity, and Pressure in the parameter list. This routine is
3874        presently contained in find_rho.F. This routine does not give the
3875        correct density for 'POLY3', which would be a z-dependent reference
3876        density.
3877    o cleaned up find_rho
3878      - removed obsolete 'eqn' from the parameter list.
3879    o added two new verification experiments: gop and goz
3880      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3881    checkpoint46g_pre
3882    
3883    checkpoint46f_post
3884    o Enable tangent linear (forward mode) gradient checks:
3885      - extended active file handling to g_... files
3886      - added TANGENT_SIMULATION to theSimulationMode
3887      - extended grdchk package accordingly
3888    o added tangent linear setup in verification/carbon/code_ftl
3889    o added adjoint setup in verification/front_relax/code_ad
3890    
3891    checkpoint46e_post
3892    o Added new equation of state -> MDJWF
3893      - EOS of McDougall et al., 2002, JAOT, submitted
3894      - caveat: the equation of state is only valid for a smaller (more
3895        realistic?) range of values than JMD95P/Z and UNESCO
3896      - added masks to the calculation of pressure in store_pressure
3897      - added more check values for density in check_eos (ini_eos.F), some of
3898        the old check values are out of the range of the MDJWF-eos, so don't
3899        expect perfect matches for those
3900    checkpoint46e_pre
3901    
3902    checkpoint46d_post
3903    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3904      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3905      case of pressure coordinates. eosType='JMD95Z' in
3906      combination with buoyancyRelation='OCEANICP' now causes an error.
3907    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3908      in find_alpha/beta.
3909    checkpoint46d_pre
3910    
3911    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3912      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3913    
3914    checkpoint46c_post
3915    o Changes necessary for ocean in p-coordinates
3916     -  Added new buoyancy relation = 'OCEANICP'
3917     -  Added new parameters = gravitySign (this used to be contained inside
3918        the factor dRdZ which I added when we first switched to R coordinates).
3919     X GM/Redi is not compatible (yet)
3920     X bottom drag and no-slip need to be debugged.
3921    checkpoint46c_pre
3922    
3923    checkpoint46b_post
3924    o Added new equation of state -> JMD95Z and JMD95P
3925      - EOS of Jackett and McDougall, 1995, JAOT
3926      - moved all EOS parameters into EOS.h
3927      - new routines ini_eos.F, store_pressure.F
3928    o Added UNESCO EOS, but not recommended because it requires
3929      in-situ temperature (see JMD95)
3930    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3931      unesco.f to be used with POLY3
3932    checkpoint46b_pre
3933    
3934    checkpoint46a_post
3935    o Added (atmospheric) pressure loading
3936      - new field in FFIELDS.h, etc...
3937      - new cpp flag ATMOSPHERIC_LOADING
3938    o Changed hFacC to _hFacC in calc_phi_hyd.F
3939    o Added SHORTWAVE_HEATING to some files for consistency
3940    checkpoint46a_pre
3941    
3942    checkpoint46
3943    further merges from release1_p5
3944    o new ctrl package
3945      - adopted from ECCO environment to enable optimization
3946      - added Eliassen Palm fluxes to controls
3947    o added Eliassen Palm flux controls to gradient check package
3948    o cost package
3949      - Compatible with new ctrl package
3950      - added Eliassen Palm cost hooks
3951      - modif's of existing cost functions
3952    o Adjoint-related bug fixes in kpp:
3953      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3954      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3955    o autodiff package
3956      - flow directives:
3957        + new for S/R do_the_model_io
3958        + enhanced for S/R checkpoint
3959        + new gmredi.flow
3960      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3961        disable adcommon.h/g_common.h by default.
3962      - fixed problem for adjoint of global_max
3963    o modified verification/carbon/
3964    o New setup for adjoint of global_ocean
3965    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3966    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3967    o incorporated hooks for sponge layer code (external_forcing.F)
3968    
3969    checkpoint45d_post
3970    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3971    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3972      (affects plume_on_slope "cg2d" output)
3973    o add new parameter deltaTfreesurf for free-surface time stepping
3974    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3975  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3976  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
3977  o add new flags:  o add new flags:

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