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revision 1.125 by jmc, Mon Jan 27 21:42:19 2003 UTC revision 1.1118 by jmc, Mon Jun 8 04:33:33 2009 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/mdsio (read/write field):
8     - tiled IO done in 1 piece (all levels at a time);
9     - multi-threaded: allow to read/write local (non-shared) array
10       (was already working with singleCpuIO ; now works also without);
11       => no longer needs barrier call after reading a file (added inside
12       mds_read/write field).
13     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
14     - move barrier calls outside gather/scatter_2d to mds_read/write_field
15    o pkg/obcs/exf
16      - exf_getffieldrec.F: add a few ". _d 0" and
17                            add code to catch the case fldperiod = 0.  
18      - obcs_precribe_read.F: change if statements so that they match
19                              the variable type (_RL)
20      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
21        exf_iprec) as part of namelist EXF_NML_01
22    o pkg/mdsio:
23      - read/write tiled (local) files: read/write 1-level tile chunk at a time
24        (instead of segment of length sNx); expected to speed up tiled IO.
25    o pkg/exch2:
26      - take buffer copy from/to array out of S/R exch2_send/recv into new
27        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
28        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
29      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
30      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
31        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
32        including Topology header file (and common blocks).
33      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
34        remove 2nd exch call in exch2_s3d_rx (no longer needed).
35      - document S/R arg. list (+ update some comments)
36    o pkg/seaice:
37      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
38        temperature and humidity over sea ice based on climatological values.
39      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
40        of LSR (this change is expected to change the results slightly because now
41        it uses slightly difference moduli from the second last LSR solution, but
42        that is more consistent with the stress computations; this part of the code
43        is not tested in the verification experiments)
44      - fix diagnostics for flux of ice in case of B-grid
45      - turn strain rates eij and press into global fields within global
46        common block in SEAICE.h for more straighforward diagnostics
47      - fix diagnostics for principal stress components, press, zeta, eta
48        to give something meaning full
49    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
50      new output (all 4 tests) using default rotationPeriod.
51    o pkg KPP:
52      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
53      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
54        and normal grid from 1 to Nr)
55    o Fix computations of L4rdt in mom_calc_visc.F
56    o eesupp:
57      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
58      should be called before a "stop" if we know that all process are going
59      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
60    
61    checkpoint61o
62    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
63    o model/src/ini_curvilinear_grid.F:
64       compute angleSin/CosC when they are not read from a file
65    o pkg/seaice:
66       add pseudo time stepping for LSOR
67    o pkg/exch2:
68       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
69    o pkg/seaice:
70       Adding separate sea ice albedo, drag coefficients, and HO in Southern
71       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
72    o SingleCpuIO:
73       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
74    o pkg/seaice:
75       put exchanged variable in (local) common block for MPI+Multi-Threads
76       to work (necessary with exch1, and for now with exch2 too).
77    o verification: to get more experiments tested with mpi, mth and mpi+mth,
78      change tiling of:
79       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
80       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
81      update output of exp:
82       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
83       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
84      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
85                       (note: output.txt generated on faulks using only 1 tile)
86    o eesupp & mdsio (SingleCpuIO):
87     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
88       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
89       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
90     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
91     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
92       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
93    o pkg/exch2:
94     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
95       read parameter file "data.exch2" if it exists; otherwise try default regular
96       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
97     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
98       with new code (not to be used, just as a backup solution).
99     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
100       in utils/exch2/input.
101    
102    checkpoint61n
103    o eesupp & mdsio (SingleCpuIO):
104      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
105        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
106        receive real*4 array (instead of real*8) to read/write 32.bit files.
107        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
108         and remove new mapping S/R)
109    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
110      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
111        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
112        when using exch2. Add S/R to map global io-buffer to global model array.
113      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
114    
115    checkpoint61m
116    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
117      and add 3 other S/R for other types (R4,R8,RS).
118      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
119    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
120     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
121     - reduce number of macro definitions (keep only those which are used);
122       can always call directly the corrresponding S/R if needed.
123     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
124       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
125     Fixed wrong type of arg in:
126       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
127       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
128     To fix: global_sum of var in common block is wrong (multi-threaded) in:
129       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
130     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
131    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
132      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
133    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
134    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
135      edges are closed (zero depth); might happen with "blank tiles";
136      for now, disabled if using OBCS.
137    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
138      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
139    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
140      to reduce length of 1.D array print in STDOUT.
141    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
142      + use 48 tiles (16x8): this will allow to test "blank tiles".
143    o start to test MPI + multi-threaded (change testreport to skip tests
144      where number of tiles do not match).
145    o genmake2: add option "-omp" to turn on Open-MP ;
146      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
147    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
148      and keep the original tile numbering. Note: compatible with old
149      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
150    
151    checkpoint61l
152    o Overlaps had been forgotten in calculating ijk keys : fixed
153    o fix cyrus makedepend for gcc 4.4
154    o experiment fizhi-cs-aqualev20:
155      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
156      and generate new output. Note: new output is much closer to the old
157      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
158      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
159    o pkg/fizhi:
160     - change to avoid indices going deliberately over array-bounds
161     - remove unnecessary MPI stuff
162     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
163     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
164       does not go over array-bounds and therefore returns reliable output.
165     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
166       this S/R has 4 output arguments, which are used inside "get_alarm";
167       when it is called with the same variable "ndum" in place of several
168       output arguments, this produces weird side effect inside "get_alarm"
169      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
170       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
171       address) and produces error.
172    o tools/gemake2: (March 27-29 2009)
173      with option "-mpi": link *_mpi files from "MODS" dir (this is what
174      testreport does).
175    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
176    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
177       update lab_sea.lsr & lab_sea.salt_plume results
178    o pkg/seaice:
179      Major overhaul of the LSOR solver: change discretization from original
180      finite differences to finite volume. The old routine is still in the
181      file seaice_lsr.F and can be turned on with the CPP-flag
182      SEAICE_OLD_AND_BAD_DISCRETIZATION
183      Along with this change, the discretization of the strain rates is changed.
184      The same flag turns on the old discretization in seaice_calc_strainrates.F
185      All verification experiments with seaice are affected (except for
186      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
187      results by setting the above flag.
188      Further changes involve changes in defaults:
189      - ALLOW_FLOODING is defined and turned on by default
190      - SEAICEadvSnow = .true. is now the default
191      - SEAICEadvSalt = .true. is now the default
192      - SEAICEadvAge  = .true. is now the default
193      - SEAICE_clipVelocities  = .false. is now the default
194                                         (as per J. Zhang's recommendation)
195      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
196        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
197      - seaice_growth: replace computation of UG by a simple copy from wspeed
198    
199    checkpoint61k
200    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
201      seaice_lsr: fixed a few metric terms,
202                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
203                  add more debugging diagnostics
204      seaice_evp: removed superfluous many metric terms of FV discretization
205                  of stress divergence
206                  affects lab_sea, lab_sea.hb87
207      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
208                  of stress divergence for non-evp solver
209                  (this part is not tested anywhere)
210      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
211                  they were effectively only half slip
212                  affects lab_sea.hb87
213      updated all relevant verification experiments (except lab_sea//output_adm.txt
214        which was left over, but fails at level 7 & 6)
215    
216    checkpoint61j
217    o pkg/seaice: turn a few hard wired parameters into run time parameters
218    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
219      time in seconds as promised by the usints in seaice_monitor and exf_monitor
220    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
221      that are not cubed-sphere grids
222    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
223    o pkg/ctrl:
224      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
225    o non-hydrostatic (calc_gw.F):
226      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
227      update output of exp. global_ocean.cs32x15.viscA4
228    o remove backward compatibility for thetaMin,phiMin
229      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
230    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
231      interpolated wind field not only for curvilineargrid=.true., but also
232      for a rotated grid (rotateGrid=.true.)
233    o pkg/exf: add capability to bypass interpolation for runoff
234      by setting yet another CPP-flag
235    o eesupp/src, B-grid exchange:
236      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
237    o autodiff
238      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
239      allows to switch to single-prec common blocks;
240      corresponding switch occurs in tamc.h, integer isbyte
241      TAF store directivs "byte" and "kind" seem equivalent;
242      Most tamc.h have been updated correspondingly.
243    
244    checkpoint61i
245    o autodiff:
246      fix autodiff_sore/_restore indices for obcs
247      (spotted by I. Hoteit, M. Mazloff)
248    o pkg/autodiff, pkg/ctrl:
249      Add flag to reduce all tapelev I/O to single-prec.
250      In data.ctrl set
251        doSinglePrecTapelev = .TRUE.
252    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
253      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
254    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
255      real fresh water flux (not yet)
256    o pkg/mdsio & rw:
257     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
258     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
259    o pkg/flt:
260     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
261       init_fixed & ini_varia.
262     - clean-up & simplify linear interpolation S/R:
263       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
264     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
265     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
266     - add vert. coordinate & horiz. indices to output files.
267     - change vertical position in initial condition, from index to depth [m].
268     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
269       (easier to get to a curvilinear grid) ; delX,delY no longer used.
270    o pkg/ggl90: a few modifications:
271     - fix bottom boundary condition, and interpolation of KappaE
272       near top and bottom
273     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
274     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
275     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
276    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
277      (maintain temporary backward compatibility, until next checkpoint)
278    
279    checkpoint61h
280    o pkg/diagnostics with "periodic averaging diagnostics":
281      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
282    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
283    o pkg/obcs: fix loop ranges for balancing code
284    o pkg/flt:
285     - improve criteria for finding which tile owns a float.
286     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
287    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
288      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
289      with ocean biogeo)
290    o pkg/flt:
291     - do some cleaning and fix the restart ;
292     - add output.txt in flt_example/results to get this pkg tested.
293    o genmake2: add an EXTENDED_SRC option and flag.
294       for now, cannot be turned on on command line (only through genmake_local)
295    o pkg/mdsio: read/write vector:
296     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
297     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
298       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
299     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
300      (drop to 4 digits matching for grad). But this test does not look very
301      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
302    
303    checkpoint61g
304    o pkg/flt:
305      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
306       + make OPTIONS file more standard.
307      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
308      - fix _BYTESWAPIO CPP-Flag
309      - standard reading of file-parameter "data.flt"
310      - fix argument list of S/R FLT_RESTART
311      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
312    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
313    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
314      a still unfixed compiler/optimization bug
315    
316    checkpoint61f
317    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
318      update results of global_ocean.cs32x15.icedyn test.
319    o move getcon.F from model/src to pkg/fizhi.
320    o pkg/exf: add parameter for extrapolation of temp up to the surface
321       and option to prevent negative evap (in bulk_largeyeager04 only).
322    o Prather Advection scheme: fix tracer conservation for divergent flow
323      (e.g., when using NonLin Free-Surface).
324    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
325    o gmredi (Visbeck-variable-K):
326     - add more parameters to Visbeck-variable-K.
327     - use a 5 points average for dSigmaR in Visbeck-K calculation
328       (more "homogenous": same stencil and same weights as in dSigmaH)
329     - update output of ideal_2D_oce experiment.
330    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
331      (#undef REAL4_IS_SLOW)
332     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
333       coordinate variable
334     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
335       (surface forcing fields), removes some of the functionality
336     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
337     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
338       probably not all: copy _RS surface flux fields to RL field before
339       calling DIAGNOSTICS_FILL
340     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
341       real*4 (CALL EXCH_*_RS) versions.
342     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
343       (generate new output).
344    
345    checkpoint61e
346    o gmredi (Visbeck-variable-K):
347      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
348      - change computation of Visbeck-K where Slope > Smax :        
349        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
350        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
351    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
352      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
353    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
354    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
355      does not become too large (to avoid precision problems in implicit-diffusion
356      solver); update ideal_2D_oce output.
357    o pkg ggl90:
358      - in ggl90_cal.F: compute only one set of visc/diff, used to
359        step forward TKE/T/S/momentum
360      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
361        have Prandlt =1)
362    o gmredi (fm07):
363      - add lower limit on Transition layer thickness + lower limit on 1/lambda
364      - allow to set few more params from data.gmredi
365    o pkg ggl90:
366          - add missing sqrt(2) factor in computation of mixing length
367            scale in ggl90_calc.F
368            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
369    
370    checkpoint61d
371    o adjoint modifs
372      - adapt to new field rhoInSitu
373      - allow to revert from StoreDynVars2D, StoreDynVars3D
374        to individual fields
375        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
376    o store 3-D (in-situ) density in commom block (DYNVARS.h)
377     - save 1 rho computation.
378     - no longer modify T & S inland when using down_slope pkg.
379    o gad_som : allow to switch to SOM advection for T & S without corresponding
380      pickup files (using new S/R: MDS_CHECK4FILE).
381    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
382      (for useSingleCpuIO to work in multi-threaded)
383    o pkg/shelfice:
384     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
385       with SHELFICEtopoFile in data.shelfice
386     - move code for reading ice shelf topography and modifying hFacC into separate
387       subroutines of the shelfice package
388     - separate initialisation of "fixed" and "variable" variables
389     - kTopC is not (yet) replaced by kSurfC, although this is possible
390    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
391    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
392      and rename:
393      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
394      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
395    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
396    
397    checkpoint61c
398    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
399      to add mass source/sink of fluid in the interior (3-D generalisation
400      of oceanic real-fresh water flux).
401    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
402    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
403    o new pkg: down_slope
404      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
405      - presently, modify T & S inland (dwnslp_calc_rho.F).
406        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
407      - implementation for ocean in P-coords not tested.
408      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
409    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
410      (to facilitate conversion of oceanic pkg to p-coordinate).
411    o change FIND_RHO to FIND_RHO_2D :
412      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
413    o new pkg: cheapaml
414    
415    checkpoint61b
416    o exch2:
417      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
418      - no longer depend on the order sequence (N,S,E,W).
419      - 3rd exchange no longer needed (tested with 24 tiles).
420      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
421      - exch_UV_A-grid readily available (but not yet tested).
422      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
423      (both are no longer needed) in exch_uv: no effect in forward run; but
424       get truncation error differences with adjoint exch.
425    o exch2:
426     - change index-bounds storage (moved from target to local tile,
427       more intuitive this way) ; rename/remove some variables.
428     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
429    
430    checkpoint61a
431    o exch2/matlab-topology-generator:
432      fix bug in index bounds for N-S internal exchange (hard to tell if this
433      had any effect on the solution).
434    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
435      is exceeded
436    o testreport: modify syntax of awk, so that it works also with
437      awk, and not only with nawk and gawk
438    
439    checkpoint61
440    o autodiff
441      Change default for TAF usage by removing argument '-nonew_arg'
442      This changes TAF subroutine argument list (ordering of active var.)
443      Omission of this flag leads to incompatibility w.r.t. TAMC
444      To restore TAMC-compatibility, need following modifs:
445      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
446      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
447      Tested TAF version is 1.9.22
448      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
449    
450    checkpoint60
451    --->>> This is the last checkpoint for which generating the adjoint
452    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
453    --->>> by default.
454    --->>> Future checkpoints will ommit this flag by default.
455    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
456    o pkg/grdchk: Add gradient check to etan0 perturbations.
457    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
458    o pkg/autodiff: more flexibility in zeroadj.
459      model/src: modifying do_oceanic_phys.F accordingly.
460    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
461    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
462      special setup of gmredi for which the adjoint is stable
463      enough for parameter optimization.
464    o bridging the gap between eddy stress and GM.
465      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
466          along with a change in CPP option (now ALLOW_EDDYPSI).
467      -> when using GM w/ GM_AdvForm:
468          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
469          is applied either in the tracer Eq. or in momentum Eq.
470          depending on data.gmredi (intro. GM_InMomAsStress).
471      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
472      The key modifications are in model/src/taueddy_external_forcing.F
473      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
474    
475    checkpoint59r
476    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
477      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
478      fix option to read coriolis(@ cell-corner) from files with CS-grid.
479    o pkg/mnc: add some attributes to standard 1D-coordinate variables
480    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
481      mass points, when using mnc for output
482      - add runtime parameter (missing_value, missing_value_int) to override
483        default (which is the value of getcon('UNDEF'))
484    o pkg/mnc: prepare mnc for the actual use of missing values with the
485      diagnostics package: small fix in mnc_cw_readwrite.template and more
486      initialisation of never used fields
487      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
488      versions
489    o pkg/thsice/thsice_ini_vars.F added default initial values so that
490      thermodynamics sea ice solver does not blow up when some initial fields
491      are missing.
492    o move from external_forcing_surf.F to ini_forcing.F
493      the p-coord. hack consisting in using pLoad to set phi0surf ;
494      update output of tutorial_global_oce_in_p (affected @ truncation level).
495    o Freshen up a bit hs94.1x64x5, notably:
496      remove rotationPeriod and tRef=5*0. (adjoint only), and add
497      exactConserv=.TRUE.
498    o pkg/generic_advdiff:
499      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
500      applies to files where Temperature & Salinity 2nd Order moments are used.
501    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
502      this uses a dynamically allocated internal state data structure
503      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
504      and requires a fortran 90 compiler
505    
506    checkpoint59q
507    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
508       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
509    o Refresh tutorial_global_oce_biogeo, notably:
510      - change bathymetry (put back seamounts in ACC, use hFacs)
511      - change EOS (POLY3 --> JMD95Z)
512      - use Bryan-Lewis vertical diffusivity
513      - use multidimensional advection
514      - remove old virtual virtual in dic pkg, now done through ptracer pkg
515      - change a couple of parameters in dic pkg
516    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
517    o pkg/obcs: change default to OBCSfixTopo = .true.,
518      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
519      - replace "debugMode" with "debugLevel .GE. debLevB"
520    o implementation of TAF directives for gchem,cfc,dic
521    o remove "exp5" (replaced by tutorial_deep_convection).
522    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
523      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
524      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
525      --> changes results in exp4, seaice_obcs
526    o tutorial_deep_convection :
527      update the set-up and increase resolution and domain size ; start
528      from pseudo initial conditions = output at t=120mn in order to see
529      something happening when running testreport.
530    o pkg/seaice: add os7mp as an advection scheme
531                  add check for advection schemes
532                  add a flag for restoring T and S underneath sea ice
533    o pkg/my82: add netcdf-support and diagnostics
534    o thsice pkg:
535      - Now hsMax limits snow height by turning it into ice following
536        flooding scheme (and now conserving energy)
537      - Slight rewriting of the formula in thsice_calc_thick.F
538      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
539      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
540    
541    checkpoint59p
542    o gchem / dic / cfc :
543      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
544      - add new parameter files: "data.dic" & "data.cfc" ;
545      - various re-arrangement in initialisation & header file ;
546      - fix tutorial_global_oce_biogeo for multi-threaded test.
547    o pkg/dic: test for "pickup_dic" file when restarting ;
548      if no pickup-file, can restart with a re-initialised pH (same as it did
549      before) providing pickupStrictlyMatch is set to False.
550    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
551      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
552    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
553      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
554    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
555     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
556       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
557    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
558       scheme to use for vorticty-term ;
559     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
560       (with default selectVortScheme, return to original discretisation)
561     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
562    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
563    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
564      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
565      also fix diagnostics VISCAHW & VISCA4W.
566    
567    checkpoint59o
568    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
569    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
570      move a few statemens out the main loop into separate loops
571    o pkg/shelfice:
572      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
573        (kg/m^2/s), does not break tests, because in verification/isomip,
574        rhoConstFresh=rhoConst (by accident)
575      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
576      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
577        new file model/src/seawater.F, so that they are available for all pkgs.
578      - convert potential temperature into in-situ temperature. This changes the
579        isomip tests => update tests
580    o add a flag writePickupAtEnd (default=true) to be able to suppress
581      writing a pickup at the last timestep
582    o tools/mpack-1.6 :
583      - disable automake (not working) and autoconf (not needed).
584      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
585        also cleaner with much less compilation warnings.
586    o pkg/profiles:
587      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
588      (for "less than 32 characters name" compiler requirement)
589    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
590      conditions that have a different sampling frequency than S/T/U/V obcs
591    o pkg/diagnostics (stats-diags):
592      - fix global Min/Max in case 1 processor get only empty tiles
593    o genmake2: replace (4 times)
594         make genmake_tc_1.o >> genmake_warnings 2>&1
595      with
596         COMM="$CC $CFLAGS -c genmake_tc_1.c"
597         echo $COMM >> genmake_warnings
598         $COMM >> genmake_warnings 2>&1
599      to make genmake2 always see the value of CC as specified in the optfile.
600    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
601      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
602      - modify verification advect_cs test to test SOM-advection on CS-grid.
603    o pkg/ctrl:
604      - Rewrite of ctrl_map_ini_ecco.F,
605        introducing a generic routine (ctrl_map_ini_gen.F).
606      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
607    
608    checkpoint59n
609    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
610      number in dedicate array "hdiag":
611      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
612        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
613      - many small changes (integer format) for large number of diagnostics
614      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
615        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
616    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
617      usingSphericalGrid, this allows to define the rotated grid coordinates
618      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
619      geographical coordinates according to the inverse of the rotation defined
620      by the Euler angles, so that Coriolis parameter and online-interpolation by
621      exf works with the geographical coordinates on XC/YC/XG/YG.
622      Naturally, this feature does not work with all packages, so some
623      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
624      profiles), because there the coordinates are assumed to be regular
625      spherical grid coordinates.
626    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
627      - introduce isopycnal diffusion coefficient control.
628    o tools/adjoint_options:
629      - additional control vector components.
630    o pkg/mnc: have mnc create marginally meaning full coordinate variables
631      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
632    o pkg/mypackage:
633      - add example of read/write pickup for state-var ;
634      - add entry points to the main code for state-vars diags & write-pickup.
635    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
636      transitions for useExfYearlyFields
637      - add new subroutine that determines the file to read from for
638        use*YearlyFields = .TRUE. and .FALSE.
639      - add a verification experiment to global_with_exf that tests
640        useExfYearlyFields with USE_EXF_INTERPOLATION defined
641    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
642      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
643      subroutines (which could be generated from a template, because they are
644      almost identical), for now they are included in obcs_prescribe_read.F for
645      simplicity
646    o pkg/exf:
647      - add a little more diagnostic to exf_interp_read (in analogy to
648        mds_read_field, can be turned off with debugLevel < debugLevA=1)
649      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
650        ugly but fast by unrolling short inner loops, inserting a unroll=8
651        directive in routine lagran, and splitting a loop and making do while the
652        outermost loop (the latter requires the intoduction of index arrays)
653    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
654    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
655      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
656    o verification/seaice_obcs: updated for restart test and latest options
657    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
658      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
659      for now this is only available for the C-grid code and also within
660      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
661    
662    checkpoint59m
663    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
664      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
665    o gad_som : fix flux output (& diagnostics) to have same units as other  
666      advection scheme fluxes (was previously multiplied by deltaT).  
667    o added verification/seaice_obcs both to test seaice open boundaries
668      and to provide an example matlab scrpt for generating them
669    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
670    o pkg/salt_plume: clean up salt_plume_frac.F to
671      remove redundancy in PlumeMethod 1 and 4
672    o pkg/kpp: added saltplume diagnostics
673    o pkg/obcs and pkg/seaice:
674      - do not set uice and vice to zero when OB*icefile are unspecified
675      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
676      - moved seaice tracer obcs after call to seaice_growth
677    o pkg/salt_plume: added various options for salt plume depth
678      criterion and for vertical distribution of the salt
679    
680    checkpoint59l
681    o pkg/ptracers: new version of ptracers pickup:
682      read meta file and write only fields which are needed to restart.
683      ( same logic as main pickup file ; also using pickupStrictlyMatch )
684    o pkg/seaice:
685      - add timescale for melting due to warm mixed layer as a means of
686        setting SEAICE_availHeatFrac more conveniently
687      - add a CPP-flag/runtime parameter check for flooding algorithm
688      - reformulated availHeat in seaice_growth.F to be independent of AREA
689    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
690      unit changes
691    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
692    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
693      SX vector computer.
694    o pkg/seaice:
695      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
696        seaice forcing fields can now be read only through pkg/exf
697      - removed some unused halos
698    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
699    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
700      or U/VICE from U/VWIND before computing U/VSTRESS
701    
702    checkpoint59k
703    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
704      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
705    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
706      all experiments pass when compile with un-initialised var. checking option.
707    o added pkg/salt_plume
708    o script to test restart (for now, in MITgcm_contrib/jmc_script)
709    o pkg/seaice: new read/write pickup version.
710      read meta file and write only fields which are needed to restart.
711      ( same logic as main pickup file ; also using pickupStrictlyMatch )
712    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
713    o lab_sea.hb87: modify the domain & update output.hb87.txt :
714      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
715      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
716      process. Fixed here by closing the domain at the Northern boundary.
717    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
718    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
719      a set of consecutive levels in/from a 3-D array.
720    o pkg/ptracers:
721      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
722      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
723    
724    checkpoint59j
725    o in pkgs: dic, obcs, offline, rbcs:
726      standard way to compute coeff. for time interpolation between 2 time reccords
727      which retains full precision (& make results less dependent on compiler).
728      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
729    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
730      packages instead of reading ice cover and wind speed separately
731    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
732     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
733      to allow to compile customized code before the update)
734    o cleaning-up:
735      - fix CPP instruction syntax in pkg/obcs
736      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
737        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
738      - fix some threads issue in IO parts.
739    o pkg/dic:
740      - add tons of "_d 0" (--> much better testreports !)
741       and then update outputs of tutorial_global_oce_biogeo
742    o pkg/mom_fluxform:
743      add a special version of momentum advection intended to conserve momentum
744      next to a bathymetry step or a coastline edge. (default = off = #undef)
745    o new read/write pickup version:
746      - for now, only implemented for main (mdsio) pickup file.
747      - write out only what is needed to restart; merge pickup_nh , pickup_ph
748        and main pickup together.
749      - read meta file; read only what is needed to restart; stop if a field
750        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
751        if it make sense (even if the restart is not perfect).
752      - if no meta file, assume that pickup to read corresponds exactly to
753        a pickup that would currently be written.
754      - read pickup written in the old format (until checkpoint59i) if it
755        recognizes an old meta file (no field-list).
756      - add a meta file in exp. which starts from a pickup: 2 cases:
757        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
758         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
759        b) a meta file describing the content of the associated pickup file
760         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
761    o pkg/mdsio & pkg/rw:
762      - new routine to read a meta file ; new set of routine to read
763        Multiple-fields file (with meta file).
764    o added open boundary conditions capability for seaice
765        HSNOW, HSALT, UICE, and VICE
766    
767    checkpoint59i
768    o adjoint:
769      * fix multiDimAdvection adjoint
770        (partial recomputation problem by TAF for fVerT(:,:,kDown)
771        and comlev1 size definition (maxpass vs. max. number of tracers)
772      * verification/global_ocean.90x45x15 adjoint now tests
773        NLFS and multiDimAdvection using DST3 (=30)
774      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
775    o pkg/kpp: add "_d 0" to real constant (if missing);
776      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
777      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
778    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
779      for internal parameters related to restart process (formerly from PARAMS.h)
780      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
781    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
782      as argument. (only atm2d & obcs write_pickup have not yet been updated)
783    o pkg/monitor:
784      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
785      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
786      - account for deep Atmosphere factor and density factor (anelastic)
787    o added open boundary conditions capability for seaice HEFF and AREA
788    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
789      thermodynamics
790      - requires a little reorganization, which affects the testreport results
791        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
792        so that now the conservative form is tested
793      - add a few comments
794    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
795    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
796    o add new diagnostics to seaice: advective, diffusive fluxes (only for
797      multidim-advection, for scheme 2 they are not filled) and transports,
798      thermodynamic growth rates
799    o change units of EmPmR (inside the code, + within coupling interface)
800      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
801      Affects results @ truncation level (cg2d match) and update output of
802       experiments: lab_sea(6), global_ocean.90x40x15(10),
803      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
804      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
805      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
806      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
807    
808    checkpoint59h
809    o pkg/exf:
810      - improve vectorization by moving if-statement out of loops in
811        exf_mapfields, exf_radiation
812      - exf_bulkformulae.F: introduce 2D fields and vectorize code
813    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
814    o testreport:
815      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
816        monitor & update offline_exf_seaice exp. output.
817      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
818    o pkg/seaice:
819      - bug fix in the evp solver: boundary conditions were affected be
820        masking of zMax/zMin (changes results)
821      - minor bug fix in boundary conditions in seaice_calc_strainrates
822        (changes results for no_slip)
823      - seaice_lsr.F: make interpolation of eta dependent on boundaries
824      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
825      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
826        stress formulation and no-slip boundary conditions
827    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
828      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
829    o pkg/seaice: a first HSALT time stepping equation has been checked in
830    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
831      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
832      without requiring DO-IF statements
833    o pkg/thsice:
834      use continuous power-law function for partition of energy between lateral
835      melting/freezing and thinning/thickening ; old code using step function
836      still available with #undef THSICE_FRACEN_POWERLAW
837      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
838    o testreport: change AD testing : check against results/output_adm.txt
839      using same scripts as for forward test.
840    
841    checkpoint59g
842    o adjoint testing: in preparation for changing testreport:
843      - output format: cost and grad written on separated lines
844      - ad output results in directory "results" (instead of "results_ad")
845    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
846    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
847    o pkg/ecco: allow user defined cost function contributions
848    o testreport:
849      Allow to choose (per experiment) the list of tested output variables
850       and the main variable (used to issue a pass/FAIL ) ;
851      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
852      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
853      Also modify printing of summary:
854       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
855       b) echo the list of tested variables in the individual summary.txt of
856          each experiment.
857    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
858      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
859      (but still depend on the tile decompostion of the domain).
860    o pkg/seaice: change a discretization detail to make the B-grid code
861      "more symmetric". This change is likely to remove all "ridges/leads" that
862      where quasi-aligned with the grid in B-grid solutions. It may also be
863      the solution to the stress coupling issues with the B-grid.
864    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
865      remove .cvsignore from input dir. (since testreport no longer run here).
866    o pkg/thsice:
867     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
868     - fix reshaping of sea-ice just after advection:
869       melt all the ice only if ice-volume is too small.
870     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
871       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
872     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
873    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
874      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
875    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
876      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
877      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
878      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
879      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
880      -> update output.txt
881    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
882     this affects truncation error: -> update output.txt of exp:
883      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
884      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
885    
886    checkpoint59f
887    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
888    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
889      a bounded range (in forward mode)
890    o pkg/ecco, ctrl, autodiff and mom_common:
891     internal parameter controls, completements of implementations
892    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
893    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
894      (not seem any difference in testing results).
895    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
896       at face corners.
897    o pkg/generic_advdiff:
898     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
899      loop range indices for computing vertical advection tendency
900      and do the calculation in the interior only (no overlap) ;
901      for now, only implemented for SOM advection (to save CPU time).
902     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
903    o exch2 adjoint
904      First set of changes:
905      - add exch2 hand-written adjoint templates
906      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
907        This will require cleanup in pkg/autodiff/*.F
908        (changed routines currently kept separate in verif. code/)
909      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
910        that used to hide exch2 or cubed-sphere specific code
911        (commented via 'cph-exch2')
912    o pkg/seaice
913      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
914    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
915       output of global_ocean.cs32x15.thsice .
916    
917    checkpoint59e
918    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
919      for B-grid vector (not yet tested) and C-grid vector (<- only used
920      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
921    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
922      (#ifdef ALLOW_SALT_PLUME)
923    o gather_2d/scatter_2d: removed halo regions
924    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
925      scheme and the corresponding test case (under front_relax dir). For now,
926      only available with Skew-flux form and not yet tested in realistic set-up.
927      adjoint: store directives updated, but gradient checks deteriorated,
928      so maybe GM/Redi adjoint is now broken.
929    o seaice adjoint
930      * add AREA, HEFF, HSNOW as control variable
931        (should not change lab_sea results)
932      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
933    o pkg/seaice:
934      * added computation of saltFlux in seaice_growth;
935        For time being, sea ice salinity is assumed constant
936        contribution of snow flooding to freshening of sea ice is neglected.
937        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
938        defaults to 0.0 in order to maintain backward compatibility.
939        Typical values for SEAICE_salinity are 4 to 10 g/kg.
940      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
941      * added SEAICE_availHeatFrac, which specifies fraction of surface level
942        heat content used to melt or grow ice
943      * commented out cap of HICE: it helps keep ice thinner
944      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
945      * applied OBCS T/S mask to HEFFM sea ice mask
946    
947    checkpoint59d
948    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
949     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
950     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
951    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
952     and change default value of parameter "GM_Small_Number";
953     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
954       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
955       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
956    o pkg/ecco: cost function when applying pkg/smooth to controls
957    o pkg/ctrl: add forcingPrecond run time parameter
958    o pkg/seaice:
959     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
960     - fix bug in metric terms of u-equation in LSR solver (implicit part),
961       changes verification/lab_sea
962     - rearrange implicit part of u-equation in LSR solver to make it easier to
963       read, understand, and debug. This causes changes at the truncation level.
964     - fix (serious) bug in the boundary conditions (sign error in the implicit
965       part) of the LSR solver. Changes all LSR results.
966     - fixed problem with HSNOW initialization to avoid thick snow when AREA
967       is initilized with small values - does not change lab_sea results.
968     - added HsnowFile initialization capability
969    o pkg/smooth: addition to model/src and pkg/ctrl so allow
970     initialization of pkg/smooth and application to control vector
971    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
972    o dependencies: pkg/profiles requires pkg/cal
973    o pkg/profiles:
974     - added option ALLOW_PROFILES_GENERICGRID
975         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
976         that interpolation information (grid points and coefficients) is provided
977         within the netcdf input files.
978         -> sample matlab scripts can be found in MITgcm_contrib/gael
979         that allow you to prepare netcdf input files.
980     - also modified: cleaner include statements, cleaner error print statements,
981       cleaner stops when error, and more tests of the netcdf input files consistency.
982    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
983    o pkg/seaice:
984     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
985       requires a new routine: seaice_diagnostics_fill.F
986     - make sure that seaice does not move if not forced (pressure replacement
987       method, Hibler and Ip, 1995), changes results
988     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
989     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
990       It is turned off by default (=-1.), because it changes the results.
991     - make it possible to read AREA from a file, too.
992    
993    checkpoint59c
994    o add S/R and diagnostics for oceanic mixed-layer depth
995    o move GMRedi call after all vertical mixing schemes (including KPP)
996    o pkg/thsice:
997     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
998      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
999    o pkg/obcs:
1000     - bug fix for balance code
1001    o pkg/seaice:
1002      - allow values of SEAICE_elasticParm > 1
1003      - add new parameter SEAICE_evpTauRelax as an alternative
1004        to SEAICE_elasticParm
1005      - make lsr boundary conditions free slip (by default), changes result
1006      - add code for no slip boundary conditions for lsr
1007      - set minimum of zeta to zero (and not 4e8) (changes results)
1008      - add a cap on AREA after advecting AREA if seaice_growth is not called
1009    o change calculation of Visbeck K:
1010      - no longer depend on tapering scheme; instead, compute slope (limited
1011        by GM_maxSlope). this is equivalent to what was comuted before with
1012        clipping or linear tappering.
1013      - fix vertical averaging (wrong by 1/2 level)
1014      - leave the old version (but will not be maintained) within
1015        #ifdef OLD_VISBECK_CALC / #endif
1016      - update output of exp. ideal_2D_oce
1017    o change error catch in calc_r_star to improve vectorization
1018    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1019      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1020    o adjoint:
1021      Re-organized adjoint checkpointing according to Matt Mazloff
1022      (but with modifs/completions/cleanups)
1023      Storing is now bundled into large arrays to optimized I/O
1024      (and second step in cleanup of the_main_loop)
1025    
1026    checkpoint59b
1027    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1028      - export/import (between ocean & coupler) fields needed for ocean DIC.
1029    o pkg/seaice:
1030      - get rid of three more exchanges seaice_calc_viscosities (required
1031        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1032      - bug fix in seaice_ocean_stress (update of lab_sea required)
1033      - reduce loop boundaries to necessary minimum also in seaice_evp
1034      - go back to the old way of computing deltaC/Z as the adjoint likes that
1035        better
1036    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1037      passive tracer to an Age Tracer) + update output.txt
1038    o pkg/exf:
1039      - implement A-grid / C-grid selection for wind-stress input files.
1040      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1041      for now, in exf_bulk_largeyeager04.F only :
1042      - change implementation for case where windspeed + 2. components wind-stress
1043        are read-in. AND use rhoConstFresh to convert evap.
1044    o pkg/seaice:
1045      - use correct EXCH_UV for wind-forcing (on A-grid).
1046      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1047        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1048    o pkg/exf:
1049      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1050      EXF_INTERPOLATION:
1051      - merge global_with_exf/code version of exf_interp_read.F
1052        to the main code ;
1053      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1054        reading the file ; Important: This options needs to be defined to recover
1055        previous code.
1056        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1057      - no longer loose real*8 precision along the way when using exf_iprec=64.
1058    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1059      - change discretisation of evp-solver in order to avoid another exchange
1060        (changes lab_sea) and clean up a little
1061      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1062        help the adjoint (this also changes the results slightly)
1063      - add a few "_d 0" where they had been missing in seaice_evp.F
1064      - cleaning up: remove unused seaice_calc_rhs.F
1065    o pkg/exf: some cleaning-up:
1066      - change various "constants" into runtime parameters
1067      - cleaned-up Large&Yeager04 routine which should eventually
1068        replace exf_bulkformulae.F (changed names of S/R and CPP)
1069        and merged various ALLOW_ATM_WIND options
1070     only used with thsice pkg (in thsice_get_exf.F):
1071      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1072        which are used when useStabilityFct_overIce=TRUE (= the default)
1073      - change default values of ice & snow emissivity and scale downward LW
1074        by ice & snow emissivity.
1075    o pkg/thsice:
1076     fix few little problems, in thsice_calc_thickn.F:
1077      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1078      - melt only laterally if hIce < hThinIce (as the comments say)
1079      and in thsice_extend.F:
1080      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1081      - start to form ice as soon as the minimum ice-volume is reachable.
1082     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1083      and cpl_aim+ocn
1084    o pkg/kpp
1085     - move computation of surface related input fields to KPP into a new
1086       subroutine kpp_forcing_surf.F
1087     - remove wrong (within bi,bj loops) EXCH calls.
1088     - little cleaning (add argument myThid in last position, cvs header ...)
1089     - for now, fix conservation problem by exchanging KPPviscAz (may not
1090       be the best fix)
1091    o pkg/seaice
1092     - check for inconsistent evp parameter/cpp-flag combination
1093     - remove leftover errIO flat for obsolete name list error handling
1094    o OpenAD
1095     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1096    
1097    checkpoint59a
1098    o pkg/seaice: some parameter clarifications and a little bit of clean up
1099    o pkg/thsice: rename run-time parameters:
1100       himin       -> hIceMin
1101       himin0      -> hThinIce
1102       hihig       -> hThickIce
1103       i0          -> i0swFrac
1104       transCoef   -> bMeltCoef
1105       frac_energy -> fracMelting
1106      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1107       with default values (for now) that do not change the results.
1108      remove old version of thsice vars advection in pkg/seaice.
1109    o in FFIELDS.h:
1110      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1111      - make pLoad & sIceLoad always available (but still only used if
1112         ATMOSPHERIC_LOADING is #define).
1113    o pkg/kpp: replaced _KPP_RL with _RL
1114    o bug fixes for vertical diffusivity computations when both KPP and
1115        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1116        are no longer updating the vertical diffusivity array
1117        (passed as argument) but are (re-) setting those arrays.
1118    o pkg/seaice: fix bug in evp solver, while doing that
1119      - change (improve?) discretization of stress computations for both
1120        cgrid-lsr and evp solver
1121      - add a new routine to compute strain rates
1122      - the above changes lab_sea results
1123      - add no slip conditions for evp solver (off by default), lsr-version
1124        may follow
1125      - fix exchange for shear at Z-points (does not change lab_sea)
1126      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1127        (to force the user to pick a time step since there is not "safe" way
1128        of choosing it)
1129      - add principal stress diagnostics
1130      - rearrange fields for evp a little to avoid having to call a: too many
1131        exchanges and b: exchanges for stress trensor components which we do
1132        not have.
1133      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1134        of evp, complete rewrite for lsr case (latter is does not yet work
1135        in all cases)
1136    o pkg/kpp: add code to have mixing in shelf ice caverns
1137      - add myThid to all kpp routines (long overdue)
1138    
1139    checkpoint59
1140    o pkg/exf:
1141      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1142        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1143      - move exf header files from lower_case.h to UPPER_CASE.h ;
1144        add missing cvs Header & Name
1145      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1146      - add namelist param. selectStressGridPosition, exf_monFreq
1147      - retire many _CLIM routines, and remove data.exf_clim
1148        + params moved to data.exf
1149        + climsst, climsss now handled by exf_set_gen, i.e.
1150          climss?period=0 refers to constant field,
1151          climss?period=-12 to monthly forcing
1152      - split up namelists in data.exf
1153    o pkg/seaice:
1154      - remove seaice_exch and seaice_exch_uv
1155      - remove superfluous exchange of theta
1156      - add myThid to seaice_budget_ocean/ice
1157      - add new interface for atmospheric wind forcing (C-grid only)
1158        + new routine
1159        + two new field (taux, tauy for stress over ice)
1160        + removed one global field (DAIRN) for C-grid case only
1161    o pkg/thsise
1162      - 2nd set of modifs for thsice adjoint in conjunction with exf
1163    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1164    
1165    checkpoint58y_post
1166    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1167      vertical diffusivity, similar to that in MOM4; turned on using
1168      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1169      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1170    o Added capability for 3D specification of background vertical diffusion
1171      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1172      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1173      "data" file that contains the 3D vertical diffusivity coefficients.
1174    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1175      - add code within pkg thsice to advect & diffuse sea-ice fields
1176      similar to (and will replace) what has been added in  seaice_advdiff.F,
1177      but: - conserving Mass, Heat & Salt.
1178           - better when using non-linear advection scheme (not yet fully tested)
1179           - can also be used in atmospheric set-up (for now, only the diffusion).
1180    
1181    checkpoint58x_post
1182    o IO option for global-file compact format:
1183      - add options when generating topology (utils/exch2/matlab-topology-generator)
1184      - add I/O capability (pkg/mdsio).
1185      - adapt utils/matlab/rdmds.m to read this format.
1186      for now long-line format not yet supported by pkg/mdsio (& exch2).
1187    o shelfice: add a few diagnostics
1188    
1189    checkpoint58w_post
1190    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1191      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1192      (and replace horiVertRatio in NH code).
1193      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1194                         and tutorial_plume_on_slope (sensitive to truncation)
1195    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1196      directly to drive seaice model (C-grid only)
1197    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1198     - reintroduce computation of wind from stress,
1199     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1200       mass points to avoid tau = 0
1201     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1202    o rdmnc.m: make it work with "global" files created with gluemnc
1203    o rdmnc.m : some improvements in dealing with singleton dimension
1204      (tested on all testreport mnc output files).
1205    o genmake2: disable pkg/profiles if netcdf test fails.
1206    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1207    o move call to cal_readparms up to make calendar parameters/variable available
1208      to all packages
1209    
1210    checkpoint58v_post
1211    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1212      useDynP_inEos_Zc tested.
1213    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1214    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1215      and portions thereof.  See read_cs.txt for description and examples.
1216    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1217      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1218      following the great-circle arc between those 2 points.
1219    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1220      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1221    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1222     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1223     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1224     - still needs work (not working with some options ; efficiency to improve)
1225       and serious testing.
1226     - use this scheme for temperature & salinity in 2 advection test exp.:
1227       advect_xy & advect_xz, respectively.
1228    
1229    checkpoint58u_post
1230    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1231    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1232    o testreport: add option "-skipdir" to skip some test.
1233    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1234      momentum calculation.
1235    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1236    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1237      remove checkpoint.F and the_correction_step.F (no longer used);
1238      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1239    o add option (linFSConserveTr) to correct for tracer source/sink due to
1240      Linear Free surface
1241    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1242    o pkg/thsice: fix reading mnc-pickups
1243    
1244    checkpoint58t_post
1245    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1246    o pkg/mdsio:
1247     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1248       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1249       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1250     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1251     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1252       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1253     - new S/R (to replace MDSWRITEMETA), which allows to write more
1254       informations (variable names, time ...) to meta files.
1255     - modify rdmds.m to give back the meta file content.
1256    o pkg/diagnostics: change vertical interpolation to be safer, and more
1257       flexible (define p-levels to interpolate to in data.diagnostics);
1258      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1259       diagnostic pointer.
1260    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1261    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1262    o fix multi-category seaice:
1263     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1264       SEAICE_MULTICATEGORY
1265     - fix short wave heat flux
1266    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1267       and allow to use EVP solver. Change forward lab_sea: test both EVP
1268       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1269    o Initial check-in of lab_sea adjoint
1270      (very similar to natl_box_adjoint/code_seaice)
1271      * used C-grid and EVP solver
1272      * used KPP, GM/Redi
1273      * uses inAdExact=.TRUE.
1274      * gradient checks fail for both ADM and TLM
1275        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1276        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1277        issue is related to forward mismatch between g77 an ifort
1278    o pkg/seaice: overhaul of thermodynamics
1279     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1280     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1281     - move a few global fields out of SEAICE.h into seaice_growth.F and
1282       make them 2D (FICE/QNETO/ ...)
1283     - remove FO (it is the same as QNETO)
1284     - introduce a few local fields to avoid modifying external fields such
1285       as atemp, etc.
1286    
1287    checkpoint58s_post
1288    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1289      changed exf_set_gen.F so that
1290        genperiod=0 means input file is one time-constant field and
1291        genperiod=-12 means input file contains 12 monthly means
1292    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1293      this affects truncation error ; generate new output file for exp. which
1294      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1295        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1296        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1297        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1298        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1299        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1300    o start implementation of deep-atmosphere and anelastic formulation
1301    o verification: remove 2nd copy of input files and use script "prepare_run"
1302      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1303    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1304    o profiles: fix for multithreaded case
1305    
1306    o diagnostics: rename few diags:
1307      s/'PRESSURE'/'RCENTER '/g
1308      s/'TICE    '/'oceFreez'/g
1309      s/'TAUX    '/'oceTAUX '/g
1310      s/'TAUY    '/'oceTAUY '/g
1311      s/'SWFLUX  '/'oceQsw  '/g
1312      s/DIFx/DFxE/g
1313      s/DIFy/DFyE/g
1314      and add few ocean-forcing diagnostics:
1315      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1316    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1317      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1318      as actual snow thickness.  It now refers everywhere to effective snow
1319      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1320    
1321    checkpoint58r_post
1322    o modifications to pkg/seaice/growth.F, which change results of
1323      lab_sea experiment: fixes pertain to melting snow over open water, to
1324      masking EVAP under sea ice, and to using the correct AREA variable for
1325      computations of EVAP, PRECIP, HSNOW, and GHEFF
1326    o add ability to read bathy, salt, and theta using MNC (off by def)
1327    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1328      both are turned off by default and do no change any results
1329    o seaice advection with pkg/thsice: a step toward the use of non-linear
1330      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1331    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1332      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1333      in natl_box (affects results @ truncation level: update output.txt)
1334    o multi-threading and IO:
1335      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1336      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1337        (needed to work with SingleCpuIO): tested in all verif. exp.
1338    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1339      affects the results (but none of the verification test uses this scheme).
1340    o Adding some pkg/diagnostics capability to pkg/seaice
1341      (will certainly be subject to changes)
1342    o ctrl: adding new control variables:
1343      lwflux, lwdown, evap, snowprecip, apressure, runoff
1344    
1345    checkpoint58q_post
1346    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1347      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1348      high_res_cube configuration by 4% on Columbia.
1349    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1350      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1351      dynamical allocation (seems to work in multi-threaded).
1352    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1353      single CPU io) so that TAF does not have to see EESUPPORT.h
1354    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1355    
1356    checkpoint58p_post
1357    o obcs: stop if obcs is used with useCDscheme = .true.
1358    o shelfice:
1359     - fix a sign error so that no slip at shelfice interface works
1360     - remove stop for combination non-hydrostatic code and shelfice. That does
1361       not mean, that the results are correct, but at least they are numerically
1362       stable
1363    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1364    o added adjoint exch routined for all exch*3d* routines
1365      and updated flow directives
1366    
1367    checkpoint58o_post
1368    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1369      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1370    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1371      and clean-up reading/writing of pickup files.
1372    o fix local version of read/write pickup (NH part) in rotating_tank/code
1373    o simplify EXCH interface:
1374     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1375     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1376    o added the regrid package
1377    o shelfice:
1378     - add a simple boundary layer scheme to reduce noise
1379     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1380    
1381    checkpoint58n_post
1382    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1383       local variable (not in common block).
1384    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1385      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1386      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1387        to work with SingleCpuIO.
1388    o add "_d 0" to real constant of pkg/cfc subroutines ;
1389       update exp. cfc_exemple & tutorial_cfc_offline output files.
1390    o multi-threading and IO:
1391      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1392        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1393      - barrier before and after reading.
1394      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1395      - avoid using MDS_WRITELOCAL for LAND pkg output.
1396      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1397        common-block variables ; Allows multi-threading with master-thread IO.
1398    o change default MAX_NO_THREADS from 32 to 4 ;
1399      and stop cleanly when MAX_NO_THREADS is too small.
1400    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1401    
1402    checkpoint58m_post
1403    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1404       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1405    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1406       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1407       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1408    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1409        add MITgcm_tutorials (= code + all the tutorials)
1410    o ecco, option to compute cost for total ssh (mean+anom)
1411    o consistent with addition of ptracer and ssh in pkg/profiles
1412    o profiles: adding ptracer and ssh
1413    o testreport: change multi-test output-file name
1414      (from output.txt.{name} to output.{name}.txt)
1415    o profiles: now ok for mutli-tiles case
1416    o seaice: add 4 parameters for different advection schemes for area,
1417      (effective) seaice thickness, enthalphy, and snow height. Their default
1418      is the standard parameter SEAICEadvScheme
1419    o calc_gw:
1420     - add cosFacU in zonal viscous flux (harmonic.visc.).
1421     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1422       of tutorial_plume_on_slope.
1423    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1424    o calc_gw: true flux-form, account for horizontal grid spacing.
1425      update rotating_tank results, but not plume_on_slope (affected at
1426      truncation level, 11 digits).
1427    
1428    checkpoint58l_post
1429    o calc_gw:
1430     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1431     - remove side-drag for now (need to fix it); update plume_on_slope results.
1432     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1433    o commit code to make SST/SSS weights spatially variable
1434      (based on either variable in-situ or variable initial T/S weights)
1435    o pkg/ecco:
1436      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1437        now based on horizontally varying weights wthetaLev, wsaltLev
1438      * cost_averagesflags now returns year indices in addition to day, month
1439      * sflux balance is performed on annual basis
1440        (sflxumm, sfluxmm2, bal_sfluxmm)
1441      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1442        including separate counting and multipliers
1443    o pkg/rbcs
1444      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1445    
1446    checkpoint58k_post
1447    o testreport:
1448     - always build in dir. "build" (if not there, mkdir build instead of building
1449       & running in input)
1450     - run in dir run (if it exists), in build otherwise.
1451     - call prepare_run (if input/prepare_run exists)
1452     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1453    o pkg/exf modifications to interpolation and rotation routines for more
1454       reasonable treatment of North Pole singularity: for tracers North Pole
1455       value is set to northernmost zonal-mean value, for zonal velocity it is
1456       set to zero, and for meridional velocity it is set to northernmost value.
1457    o pkg/exf/exf_check_range.F
1458     - add tile index to diagnostics and move stop statement to the very
1459       end of the routine.
1460    o pkg/diagnostics: (diagnostics_main_init.F)
1461      define title of isomorphic variables according to the current config.
1462    o pkg/thsice with pkg/seaice dynamics:
1463    - fix domain of computation (interior only, required for exf) and do exchanges
1464    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1465    o towards a standard way of dealing with multi-threading in MONITOR
1466      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1467    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1468       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1469    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1470    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1471    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1472       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1473    o tracer advection:
1474     - clean-up and simplify calc_common_factors.F
1475     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1476       advection subroutine (but still not used within DST advection S/R)
1477    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1478    
1479    checkpoint58j_post
1480    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1481      from file (collects calls previously in FORWARD_STEP)
1482    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1483    o adjoint store dir. adjusted accordingly
1484    o genmake2
1485      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1486    
1487    checkpoint58i_post
1488    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1489      on wind stress (SEAICEstressFactor defaults to 1.)
1490    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1491      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1492    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1493      on CS-grid: no longer loosing mass.
1494    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1495    o pkg/ggl90: fix sloppy output and fix a bug
1496    o pkg/seaice: added SEAICEuseEVPpickup parameter
1497      - Set to false in order to start EVP solver with
1498        non-EVP pickup files when using SEAICEuseEVP
1499      - fix sign error in diffusion in seaice_calc_rhs
1500    
1501    checkpoint58h_post
1502    * Modifications for bottom topography control
1503      o replace hFacC by _hFacC at various places
1504      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1505      o add non-self-adjoint cg2d_nsa
1506      o update autodiff support routines
1507      o re-initialise hfac after ctrl_depth_ini
1508      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1509    * Adding verification for 5x5 box (4-layer) bottom topography control
1510    
1511    checkpoint58g_post
1512    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1513       used for mean seasonal cycle, mean diurnal cycle); add an example
1514       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1515    o pkg/ggl90:
1516      - add parameter (minimum surface kinetic energy)
1517      - fix bug (avoiding division by zero)
1518    o couple pkg/thsice to pkg/seaice:
1519      - modify advection in seaice to accomodate new scalar fields to be advected
1520      - only muliDimAdection scheme work with seaice/thsice
1521      - mapping of thsice-variables to seaice-variables, back and forth
1522      - does not break the verification experiments, but does not give the
1523        desired results either
1524    o pkg/seaice
1525      - make (default) second order advection a bit less confusing?
1526    
1527    checkpoint58f_post
1528    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1529      to pkg/seaice):
1530      - new routines thsice_map_exf and thsice_get_exf provide the interface
1531      - add an additional formal parameter to thsice_solve4temp
1532    o pkg/exf:
1533      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1534      - correct Stefan-Boltzmann constant
1535      - new parameter for longwave surface emittance
1536      - separate some stuff from exf_bulkformulae into new routines  
1537        exf_radiation, exf_wind
1538      - add new parameters and constants: longwave emissivity for ocean, ice
1539        and snow, evaporation parameters over ice
1540      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1541        either wind from stress or stress from wind
1542    o pkg/thSIce:
1543    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1544    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1545       and THSICE_CALC_THICKN
1546    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1547    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1548      to make debugging easier.
1549    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1550    o pkg/bulk_force:
1551      - clean-up comments and parameters ;
1552      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1553    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1554      generate new output for test-experiment: aim.5l_cs.thSI
1555    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1556      testreport accordingly
1557    
1558    checkpoint58e_post
1559    o SEAICE_CGRID adjoint done
1560    o R_STAR adjoint implemented.
1561      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1562      * need to sort out init. of h0facc, etc.
1563    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1564      to be able to use it in pure forward.
1565    
1566    checkpoint58d_post
1567    o upgrade simple test-experiment to tutorial example:
1568     step.1: duplicate the experiment and (step.2) will remove the old copy.
1569      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1570      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1571      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1572      tutorial_global_oce_biogeo    <- copy of dic_example
1573      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1574      tutorial_plume_on_slope       <- copy of plume_on_slope
1575      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1576      tutorial_global_oce_optim     <- empty for now (David ?)
1577      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1578     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1579    o correct a sign problem in cost_scat.F
1580    o obcs and ptracers: fix boundary conditions for advections schemes
1581      with larger stencil
1582    o thsice adjoint: start
1583    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1584      completeness
1585    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1586      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1587    o ptracers adjoint:
1588      * avoid extensive recomputatations
1589      * fix missing re-init. of gptr (missed by TAF)
1590    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1591      me to turn off the excessive output to STDOUT that this package produces
1592    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1593      and add those terms in Vector-Invariant formulation.
1594    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1595      if the control period (xx_hfluxperiod etc) is 0
1596    o in profiles pkg, clean routines and fix details
1597    o in ecco pkg, reading ssh data:
1598      fix problem in case the model does not start at iter0=0
1599    o fix mnc-pickup/restart for ptracers
1600    o new package prifiles:
1601      code to compute profile-based cost by Gael Forget
1602      (modifs in ecco, ctrl, autodiff)
1603    o Benign bug fix in initialization (spotted by M. Mazloff) of
1604      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1605    
1606    checkpoint58c_post
1607    o adjoint: finish NLFS adjoint and provide reference output in
1608      verification/global_ocean.90x40x15/results_ad_nlfs
1609    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1610      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1611      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1612      with SEAICE_CGRID defined.
1613    o move calendarDumps from "data" to "data.cal" and clean-up the code
1614      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1615    o add useEXF & useCAL flags (for now, set in hard-coded way)
1616    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1617      (were missing in NH mode, and wrong in quasihydrostatic mode).
1618      waiting for Chris updated version of calc_gw to add those CALLs.
1619    o fix bug in quasihydrostatic S/R ;
1620      add a test for this option: global_ocean.90x40x15.qshyd
1621    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1622      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1623    o add on/off flag useOffLine for package OFFLINE
1624    o seaice:
1625      - modify advection so that it works also on the C-grid
1626      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1627        problem in multi-tile runs with C-grid
1628      - add flags for clipping ice velocities and/or masking solver forcing
1629      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1630        C-grid solver
1631      - added a few comments to seaice_diffusion.F
1632      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1633        are now exclusive)
1634      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1635        required re-ordering the code a little:
1636       + make DAIRN global variable (defined in SEAICE)
1637       + move computation of the viscosities eta and zeta into a new separate
1638         routine (because I need to recompute them in seaice_ocean_stress.F)
1639    
1640    checkpoint58b_post
1641    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1642      update output.txt of exp. aim.5l_cs.thSI
1643    o various mnc cleanups and improvements:
1644      + shrink lookup tables by factor of ~4
1645      + better error reporting when running out of lookup space
1646      + able to handle longer path/file names (up to 500 chars)
1647    o adjoint:
1648      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1649      - TBD: "hidden" mom_vecinv recomp. in dynamics
1650    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1651     (allow to differentiate between forcing components using new integer flags:
1652      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1653     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1654    o ecco
1655      - enable trend removal from SSH anomaly obs.
1656    o adjoint
1657      - a fix for PmEpR when #undef EXACT_CONSERV
1658      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1659      - try to fix "hidden" recomp. in forward_step for NLFS
1660        (NLFS seems broken sometimes after I checked it in)
1661    o seaice:
1662     - add c-grid version of the dynamic solver:
1663       + three new routines that are the c-grid substitute lsr, dynsolver
1664         and ostres
1665       + put a few fields that were local to dynsolver into global common
1666         blocks, so that I can move the computation of stresses etc into
1667         seaice_lsr (saves coding but may break the adjoint).
1668     - replace more hardwired parameters by runtime parameters
1669     - add ice masks that mask the rhs of the implicit solvers where there
1670       is no ice (commented out in seaice_dynsolver, because i am not sure
1671       if this works properly), eventually this should replace the clipping
1672       of ice velocities in seaice_dynsolver to +/-40cm/s.
1673    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1674      include it only where its needed
1675    o move balancing of fluxes before the call of external_forcing_surf
1676    o seaice:
1677      - correct units of turning angles (now they are really in degrees)
1678      - move computation of GWATX/Y out of main routine into dynsolver
1679      - initialize GWATX/Y in seaice_init
1680    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1681      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1682    o seaice: add runtime flags for turning angles (default to zero)
1683    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1684      and trend from exf forcing and ctrl control adjustments
1685    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1686      (since checkpoint57x_post)
1687    o change the default rotation period to 86164.s = the Earth rotation
1688    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1689      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1690    o seaice advection: add code for choosing between the default (2nd order
1691      central differences) and multiDim advection schemes provided by
1692      pkg/generic_advdiff
1693    o seaice:
1694      - removed all references to SEAICE_GRID.h fields from
1695        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1696        (cubed-sphere configuration will change a little)
1697      - grid computations in seaice_init are obsolete now.
1698      - cleaned up code a little so that is easier to read (hopefully).
1699      - added new (better?) discretizations of default advection and diffusion
1700        (turn on with SEAICEuseFluxForm)
1701      - replace 1 in 3d global fields by kSurface in growth.F
1702      
1703    checkpoint58a_post
1704    o seaice:
1705      - bug fix in advect.F
1706    o shelfice:
1707      - separate shelfice load anomaly from pload (breaks with time
1708        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1709        Its default is 0., but it may be computed more cleverly from (unknown)
1710        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1711        done offline. A good approximation of the pressure load anomaly is
1712        necessary to avoid large initial adjustment processes underneath
1713        deep-reaching shelfice.
1714      - small fix in ISOMIP shelfice_thermodynamics
1715      - add more sophisticated thermodynamics of Hellmer (1989), this is
1716        now the default
1717      - give a few constants more intuitive names
1718    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1719      if bulk formulae are used in long integration (especially EmPmR). Turn
1720      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1721      if balancePrintMean, the imbalance that is substracted is printed to
1722      STDOUT.
1723    o fix bug (typo) in obcs_apply_eta.F
1724    o add a new package shelfice which enables us to model the circulation
1725      underneath shelf-ice with draughts of hundreds of meters.
1726     - works
1727     - to do: + include improved thermodynamics
1728              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1729                instead of new field kTopC
1730              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1731                instead of new field R_shelfIce and new code in ini_depth.F
1732                and ini_mask_etc.F?
1733              + adjust vertical mixing schemes?
1734    o seaice pkg:
1735     - add a cpp-flag to include a simple formula for a salinity dependent
1736       freezing point of sea water at the surface
1737     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1738       meridional stresses are now different (and hopefully correct)
1739    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1740       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1741       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1742    o pkg/diagnostics: add options and parameters for regional-statistics
1743       diagnostics ; define regions by reading a region-mask from a file
1744       (might add other options later)
1745    o pkg/bulk_force:
1746     - add option and parameters to use AIM surface-flux formulae.
1747     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1748       others forcing fields (defined in PARM05, parameter file "data") are loaded
1749       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1750     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1751     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1752     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1753       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1754     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1755    
1756    checkpoint58
1757    o add "--embed-source" option to genmake2 which, when the supporting
1758      tools can be compiled (as determined by genmake2) will turn on the
1759      embed_files package which then embeds the entire MITgcm source code
1760      (*.[fFhc] + Makefile) used for the build within the executable
1761      - requested by CNH but off by default
1762      - adds a paltry <9MB to the mitgcmuv executable in most cases
1763      - only writes the output when useEMBEDSRC in eedata is true
1764    o clean up 3-dim. relaxation codes:
1765      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1766      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1767      * Thanks to Tom Haine for testing!
1768    
1769    checkpoint57z_post
1770    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1771      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1772    o fix the pickup behavior for obcs in combination with ptracers
1773    o fix a bug in ptracers_external_fields_load
1774    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1775      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1776    o transfered surface NH pressure to eta field (if exactConserv).
1777    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1778         and update lab_sea output.txt file.
1779    o completing 3-dim. relaxation code: additional term
1780         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1781      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1782      * At compile time, in "EXF_OPTIONS.h" set
1783          #define  ALLOW_CLIMTEMP_RELAXATION
1784          #define  ALLOW_CLIMSALT_RELAXATION
1785      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1786          tauThetaClimRelax3Dim = 15552000.0,
1787          tauSaltClimRelax3Dim  = 15552000.0,
1788      * 3 cases:
1789          1) Use a constant-in-time 3-dim. field
1790          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1791          3) Real-time relax. to time-evolving prescribed field
1792    o Adding Laplacian-type smoothness constraint on
1793      initial and boundary (forcing) controls (ic, bc)
1794      * enable at compile-time via
1795        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1796      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1797      * Absolute scale somewhat unclear so far
1798      * no area weighting was included since no other cost term does so far
1799    
1800    checkpoint57y_post
1801    First step for a NLFS adjoint
1802    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1803    o new init. routines for calc_r_star, calc_surf_dr
1804    o still need to deal with ini_masks_etc
1805    o testreport seemed happy
1806    checkpoint57y_pre
1807    
1808    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1809    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1810    o add new offset feature to offline pkg (plus minor cleanup)
1811    o cfc fixes for final year of integration
1812    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1813      be in GCHEM_OPTIONS).
1814    
1815    checkpoint57x_post
1816    o fix testreport Pb in multiple test experiment.
1817    o cleanup our namelist syntax in verification:
1818      - make it more F95 standards compliant (some work still needed)
1819      - allows the vast majority of our tests to work with gfortran
1820    o Non-Hydrostatic:
1821     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1822     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1823    o Allow to apply AB on T,S rather than on AB(gT,gS):
1824     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1825     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1826       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1827     - need a "clever" read_pickup to restart from the other AB formulation
1828    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1829    o remove some unused variables (reduces number of compiler warnings)
1830    o adjoint
1831      * Disable useVariableViscosity for adjoint for time being
1832        (there are a number of extensive recomputations)
1833      * Initialize certain variables needed for adjoint
1834    
1835    checkpoint57w_post
1836    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1837                 fix the singleCpuIO RS version of MDSWRITEFIELD
1838       and add a WARNING if using globalFiles=T with multi-processors.
1839    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1840      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1841    o tracer advection scheme:
1842      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1843       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1844       was not very convenient).
1845      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1846       (further tests needed for the implicit DST & Flux-Limiter schemes).
1847    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1848      and sRef for convenience, handy, when you want to initialize
1849      ptracers in a large domain with a constant non-zero value. Also,
1850      untangle ptracers_init.F a little.
1851    
1852    checkpoint57v_post
1853    o change dome exp. to use variable viscosity in side-drag terms.
1854    o remove all the files from the cfc_offline test since they are now
1855      incorporated into tutorial_cfc_offline which has been producing
1856      identical results for a few days of testing
1857    o add new parameter: sideDragFactor to enable half-slip-side BC
1858      and change side-drag S/R to use viscosity from mom_calc_visc
1859      (can switch back by setting sideDragFactor=0.); affects results at
1860      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1861       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1862    o vorticity & strain are now computed without masking, to account for
1863      no-slip-side BC in variable viscosity calculation ; mask is applied
1864      anyway later on, before computing advection/coriolis terms.
1865    o modify exp4 to test new obcs support for reading from external files
1866      and for passive tracers
1867    o fix behavior of ptracers_monitor when monitor output is written to a
1868      netcdf-file; still not independent of monitor.F (writes in the same
1869      file).
1870    o change default value of tRef (put a uniform, meaningful value for ocean
1871      & atmos) and initialize sRef (was missing, as Martin mentioned).
1872    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1873      to be proportional to enstrophy dissipation length.  Thus,
1874       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1875      This is now consistent with Smagorinsky and with the manual.
1876    
1877    checkpoint57u_post
1878    o OBCS and PTRACERS: add open boundary support for passive tracers
1879      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1880        OB-values from file; this is not different from the way theta and salinity
1881        are treated
1882      - however, Orlanski-radiation conditions are not supported, and the model
1883        will stop if you use pTracers and Orlanski at the same time.
1884      - beefed up the rountine obcs_external_fields_load: now only those open
1885        boundary values are overwritten with values from files for which there
1886        are really files, otherwise the OB-fields remain untouched. This makes
1887        it possible to use different OBs at different ends of the domain (as
1888        with EXF)
1889    o reduce number of exch calls in shap_filt (s2).
1890    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1891      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1892    
1893    checkpoint57t_post
1894    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1895    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1896      same truncation, independent of the face number: affects affects several
1897      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1898    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1899      note that biharmonic viscosity + no-slip was not tested in any experiment.
1900    o fix bug in non-linear free-surf side-drag ; generate new output for
1901      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1902    o make mnc honor the writeBinaryPrec flag for most kinds of output
1903    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1904    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1905      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1906    o add brackets in multi-terms sum to get same truncation, independent of
1907      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1908      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1909    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1910      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1911      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1912      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1913      Suggested values of viscosity parameters found in mom_calc_visc.
1914      Many new viscosity diagnostics available.
1915    
1916    checkpoint57s_post
1917    o Add clearing-house for viscosity calculations, mom_calc_visc and
1918      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1919      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1920      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1921      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1922      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1923      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1924      ViscAhStrain and viscAhTension are now retired.
1925    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1926    o In response to JMC's bug report, genmake2 now ignores any soft-links
1927      that it finds in the *current* directory when searching for files.
1928      Soft-links found in any other source directories will still work as
1929      they did before.
1930    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1931      a C routine to unlimit the stack size
1932    o mnc-ify pkg/aim snapshot vars
1933    o mnc-ify pkg/land as requested by Daniel
1934    o various changes to mnc including:
1935      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1936      - output can now be grouped so that all files within a group
1937          change the ITER portion of their names in lock-step together
1938      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1939          and works with both EXCH1 and EXCH2 (but needs more testing)
1940      - writing works for all verification test cases w/ g77 on Linux
1941    
1942    checkpoint57r_post
1943    o make MNC variable initialization happen earlier
1944    o add diagnostics for (almost) each term of the momentum Eq.
1945    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1946    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1947    o remove MINIMAL_TAVE_OUTPUT option ;
1948      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1949    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1950      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1951    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1952    o add time-dependent SST, SSS control
1953    o cost terms in ecco/ modularized (new cost_generic.F)
1954    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1955    o new infrastructure for seaice model vs. obs misfits in seaice/
1956      * driver from the_main_loop.F is seaice_cost_driver.F
1957      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1958      * gradient check in Exp. 6a of natl_box_adjoint/
1959    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1960      (see README file)
1961    
1962    checkpoint57q_post
1963    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1964    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1965      - bug was reported by Jean-Michel and Ian Fenty
1966    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1967      update exp. cpl_aim+ocn output.
1968    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1969      Needed for high-res. runs with large global files
1970      to be able to limit tapelev size
1971    o Changed some tests for adjoint:
1972      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1973      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1974      * global_ocean.90x40x15/ back to default 3-level checkpointing
1975    o Modifications to enable scripted COMMON to MODULE conversion
1976      * verification/OpenAD/code/ has necessary scripts and description;
1977      * converts, compiles and runs successfully;
1978    
1979    checkpoint57p_post
1980    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1981    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1982      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1983    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1984    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1985      (was already the case for dissipation with mom_vecinv,
1986       and also the case for grad.PhiHyd when staggered-timeStep)
1987      This will allow to put dissipation out-off the AB time-stepping.
1988     Unfortunately, affects truncation error. Update output of exp. that "fails"
1989      (cg2d matching number) and leave the others for later: front_relax(10),
1990      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1991      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1992    
1993    checkpoint57o_post
1994    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1995      (2) its ready to be documented during the 20050801 DocFest
1996    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1997      for ideal_2D_oce and lab_sea on linux_ia32_g77
1998    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1999      in global1x1_tot/code_seaice_adj to access indices 32, 33
2000      (worth another tag)
2001    
2002    checkpoint57n_post
2003    o adding precip control xx_precip 32
2004    o adding swflux control xx_swflux 33
2005    o Replacing 10 forcing penalty cost routines by 1 generic.
2006    o Implementing partitioning in time-mean and variable adjustment
2007      for atmos. state.
2008    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2009    o in natl_box_adjoint:
2010      * updated exp 1 to 10
2011        (but does not have time-mean vs. variable split results yet)
2012    o updated global1x1/*_seaice_adj/
2013      to incorporate latest changes
2014    o enable useSingleCpuIO for mdsio vector routines
2015      (applies in particular to tapelev I/O)
2016    o removed inefficient K-loop in all active_file*control*.F
2017    
2018    checkpoint57m_post
2019    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2020      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2021    o pkg/exch2: filling of face-corner halo regions is optional
2022      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2023    
2024    checkpoint57l_post
2025     tag before updating tutorials (pre-release-2)
2026    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2027       for output and interpolation of input fields onto model grid)
2028    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2029       Affects results of exp. rotating_tank ; update output.txt.
2030    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2031          and taking the square quantity and/or using a fraction-weight field.
2032    o fix aim_diagnostics_init.F mate numbers.
2033    o add mnc output capability to diagnostics/diagstat and update
2034      our cvsignore files for the ACSII output generated
2035    
2036    checkpoint57k_post
2037    o lab_sea now uses diagnostics package and provides a suite of
2038      new EXF diagnostics output.
2039    
2040    checkpoint57j_post
2041    o exf
2042      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2043        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2044        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2045      * extended diagnostics output
2046        - now includes all EXF variables
2047        - hs, hl moved to common block
2048        - separate S/R for diagnostics, called after ctrl vector is added
2049        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2050        - EXFqnet contains true Qnet (i.e. includes qsw)
2051      * updated verif. lab_sea, global_with_exf
2052      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2053        to ensure that diagnostics sees a true EXFqnet
2054    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2055    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2056      several times with different frequencies.
2057    o mnc-ify the thsice package as requested by Daniel Enderton
2058      - the monitor--MNC output needs work
2059      - many attributes need to be added (most are currently blank)
2060    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2061      - many attributes need to be added (most are currently blank)
2062    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2063    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2064    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2065      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2066         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2067    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2068     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2069    
2070    checkpoint57i_post
2071    o Diagnostics package was changed: diagnostic allocation is now deactivated
2072      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2073    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2074      add 1rst Order upwind vertical Shear.
2075    o add a quick fix for A/B checkpointing in OFFLINE mode
2076    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2077      end-run around the C/Fortran linking horror in eesup/src/timers.F
2078    o added pkg/runclock: allows user to terminate run based on wall clock
2079    o added non-hydrostatic scaling parameter: nh_am2
2080    o pkg/my82: futile attempt to make results compiler-independent by adding
2081      some "_d 0", etc. no effect.
2082    o for mnc output, fill the 'T' coordinate var with myTime and create a
2083      separate 'iter' variable for iteration count
2084    o pkg/diagnostics:
2085      add new capability: output of Global/Regional & per-level statistics ;
2086      tested against monitor output (including land & thSIce) on various exp.
2087    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2088    
2089    checkpoint57h_done
2090      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2091      data.diagnostics, data.gchem, data.ptracers) is done.
2092    
2093    o pkg/diagnostics: prepare for Global/Regional statistics.
2094      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2095    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2096      and rename it: DIFFERENT_MULTIPLE
2097    
2098    checkpoint57h_post
2099    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2100    o pkg/diagnostics: change output frequency, now in seconds (instead
2101      of Nb of iterations). This requires to change data.diagnostics.
2102    checkpoint57h_pre
2103    
2104    o in mnc, let the user create the output dir if both mnc_outdir_date
2105      and mnc_outdir_num are false
2106    o add fflags() to pkg/diagnostics which allows one to specify, on a
2107      per-file basis, the file precision [default behavior is unchanged]
2108    o added diagnostics to pkg/kpp, including computation of mixed layer
2109      depth based on a temperature/density criterion
2110    o updated verification/natl_box to test the new pkg/kpp diagnostics
2111    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2112    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2113    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2114      not mnc -- this mistake was found by JMC and is now corrected
2115    
2116    checkpoint57g_post
2117    o add Adams-Bashforth 3rd Order time stepping:
2118      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2119      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2120    checkpoint57g_pre
2121    
2122    o make lambda[Theta,Salt]ClimRelax spatially varying
2123      (default remains spatially uniform constant based on tau)
2124    o added new control variables
2125      * init. uVel, vVel, etanN
2126      * lambda[Theta,Salt]ClimRelax
2127    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2128      (suggested by G. Forget)
2129    
2130    checkpoint57f_post
2131    o add parameter "baseTime" = model base time = time at iteration zero
2132      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2133      account for baseTime shift
2134    o move Coriolis arrays from PARAMS.h to GRID.h
2135    checkpoint57f_pre
2136    
2137    o mnc-ifying the seaice package
2138    o introduced an alternative length scale calculation for use in the limiting
2139      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2140    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2141    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2142      as well as grad(vort3).  Made it compatible with both approximate form
2143      for the cubed sphere and full form of these gradients.  Added flag
2144      useFullLeith to select between approximate and full form.  
2145    o add "d0" in getcon.F to reduce differences between compilers/platforms
2146      update output.txt of exp. fizhi-gridalt-hs
2147    o change port_rand funtion to allow to set the seed.
2148    o fix obscure MNC bug involving conversion between reals and integers
2149      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2150        new version is now more standards-compliant
2151    o adjoint-related modifications
2152      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2153      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2154      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2155    
2156    checkpoint57e_post
2157    o Adding eddy stress controls a la Ferreira et al.
2158    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2159    
2160    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2161      update output.txt of exp. fizhi-gridalt-hs
2162    o add more "Z" dimensions and associated coordinate vars to MNC
2163    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2164    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2165      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2166      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2167      months and years.  Requires pkg/cal.
2168    o diagnostics: add pickup functionality
2169      - off by default for backwards compatibility
2170      - current version only uses MDSIO -- MNC will be added
2171    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2172    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2173    
2174    checkpoint57d_post
2175    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2176    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2177      output from the diagnostics package
2178    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2179    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2180      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2181    o add coordinate variables to the MNC output from the diagnostics package
2182    o change MNC-flags default value: true when useMNC=TRUE
2183    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2184      the ability (off by default) to read the grid information using MNC
2185    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2186    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2187    o do snap-shot diagnostics at the middle of the time-interval (instead of
2188      at the end).
2189    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2190      new test for AIM with thSIce + slab-ocean
2191    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2192    o move state variable diagnostics to the beginning of the time step ;
2193      (note: still needs some work specially for snap-shot diagnostics)
2194      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2195    
2196    checkpoint57c_post
2197    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2198    o generate new output.txt files on faulks with g77 & the new -ieee option
2199    checkpoint57c_pre
2200    
2201    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2202      update output.txt of exp. global_ocean.90x40x15
2203    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2204      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2205    o add saltFlux(+File) forcing capability with periodicExternalForcing
2206    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2207    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2208    o improvements for the MNC output from DIAGNOSTICS:
2209      - correct handling of the unlimitied dimension
2210      - all dims now have associated coordinate variables
2211      - variables located at U, V, and Corner ("Z") points are now written
2212        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2213        *all* data points are output
2214    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2215    o added pkg/seaice/seaice_monitor.F
2216    o mdsio_readfield.F can now read files visible only to master MPI process.
2217    o pkg/seaice: some test code for ice-modified ocean stress
2218    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2219      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2220      spurious negative numbers for precipitation and humidity.  Will cause
2221      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2222    o pkg/ctrl/
2223      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2224        May be enabled via doPackDiag
2225      *  introduce z-scaling of
2226         + gradient (doZscalePack) and
2227         + control (doZscaleUnpack)
2228    o pkg/mdsio/
2229      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2230      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2231    
2232    checkpoint57b_post
2233    o simplify options in diagnostics_fill arguments (remove weird combinations)
2234    o fix MNC coordinate variables so that they now contain per-face index
2235      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2236      general, EXCH2 grids are only aligned to a "local" coordinate system
2237    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2238    o Implement instantaneous output within pkg diagnostics:
2239      setting a negative frequency in data.diagnostics produces
2240     "snap-shot" output (as opposed to time-average if freq > 0)
2241    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2242      NOTE: change ptracer diagnostics name: use 2 characters to work with
2243            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2244    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2245      becomes the coordinate variable for the 'T' dimension
2246    o add CF-style coordinate variables to MNC
2247      - just a first cut:  numbers are meaningless on the cubesphere and
2248        missing along the T axis but otherwise it works!
2249    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2250    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2251    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2252      this is based directly on what the model compute, so that the content of
2253      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2254    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2255    o clean up build options files for SunOS, in particular
2256      - remove -traditional from xmakedepend
2257      - change -xarch=v9 to -xarch=native for f77
2258      - restore use of make (not gmake)
2259      - add CC=gcc if using g77
2260    o changes per discussion of AM, JMC, & EH3 today:
2261      - move redundant "grid" variables out of "state" -- in preparation of
2262        creating proper CF-style coordinate variables and in recognition
2263        that any/all grid variables can be easily copied (eg. w/NCO) from
2264        the grid files into any of the other NetCDF files
2265      - *always* output grid variables with MDSIO (this will eventually be
2266        changed)
2267      - output MNC grid file if useMNC is true
2268    o every instance of _END_MASTER() has been found and replaced with
2269      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2270      preprocessors
2271    o re-arrange diagnostics pkg initialisation:
2272     - allow each package to extend the available diagnostics list
2273     - add some checking and fix small problems (multi-threaded, ...)
2274     - new S/R diagnostics_fill (replace fill_diagnostics):
2275       look through the short list of active diag. (instead of the long list)
2276       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2277    
2278    checkpoint57a_post
2279    o this set of changes restores TAMC compatibility
2280      tested for global_ocean.90x40x15 adjoint on trough
2281      (what a pain)
2282    
2283    checkpoint57a_pre
2284    o some modifs in tools/build_options for sunos
2285    o call ctrl_pack for ctrl at end for optimcycle=0
2286    
2287    checkpoint57
2288    o add horizontal bi-harmonic viscosity for vertical velocity
2289      - new parameter viscA4W (defaults to viscA4)
2290      - affects only non-hydrostatic code
2291      - to be done: no-slip lateral boundary conditions
2292    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2293    o implement Implicit Vertical advection for pTracers
2294    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2295      (implemented also for implicit vertical diffusion & advection)
2296    o OBCS: extend application of tracer open boundary conditions
2297      to a strip beyond the boundary of width Olx/Oly
2298    o add call monitor to TAF set of required calls (flow directives)
2299      and include in natl_box_adjoint
2300    o untangle a few ifdefs related to cost, ctrl, autodiff
2301      untangel a few ALLOW_ECCO_OPTIMIZATION
2302    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2303      (theta2, salt2 in ecco_cost_weights)
2304    
2305    checkpoint56c_post
2306    o OBCS as control variables
2307      - update ctrl_ad_diff.list, obcs_ad_diff.list
2308      - remove balance of obcs controls from default
2309      - fix index bug nobcs in ctrl_init
2310      - fix dummy fields filen in ctrl_pack
2311      - add dummy weights for obcs
2312    o lsopt: comment out fort.94 output
2313    o optim:
2314      - remove unnecessary header files
2315      - adjusted namelists
2316      - add xerbla.F to Makefile
2317    o exf:
2318      - multiple modifications of exf_check_range
2319      - unit change in exf_init_runoff from [m/year] to [m/s]
2320    o mdsio:
2321      - i/o-vector change debugLevel from debLevA to debLevB
2322    
2323    checkpoint56b_post
2324    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2325      is called from DO_THE_MODEL_IO
2326      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2327      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2328      - clean up PTRACERS_WRITE_TIMEAVE a little
2329    o add another verification experiment that tests both the cfc-pkg and
2330      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2331      reactive tendencies treated inline with regular timestepping
2332    o testreport previously did a lousy job of comparing small numbers, so
2333      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2334      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2335      testreport.
2336    o ptracers_monitor: bug fix for MPI
2337    
2338    checkpoint56a_post
2339    o GCHEM: finish reorganizating the package
2340      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2341        (introduces another 3D-array for each passive tracer, but only if
2342        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2343        gchemTendency is not needed because the timestep is done separately)
2344      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2345      - GCHEM is now---more or less cleanly---separate from PTRACERS
2346      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2347        so clear to me how that should be done in a general way.
2348    o CFC: improve formatting of output in CFC_ATMOS
2349    o PTRACERS:
2350      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2351        that ALL experiments with ptracers enable can be checked. This makes
2352        GCHEM_MONITOR obsolete.
2353      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2354        monitorFreq
2355      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2356    o add PTRACERS (PTR0[1-5]) to testreport output
2357    o exf_check_range:
2358      * default changed to .TRUE.
2359      * will check values for niter0 if debLevA, every timestep if debLevB
2360      * STOP in exf_check_range if 'out of range'
2361      * range chosen generous to allow for potential extema
2362      TBD: a version with stricter range
2363           permitted range would be runtime parameters
2364    o GMredi:
2365      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2366      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2367      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2368    o GCHEM:
2369      - move call to GCHEM_FORCING_SEP, so that it is now called before
2370        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2371      - introduced a useGCHEM runtime flag and applied it everywhere.
2372      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2373        this flag is now only visible within GCHEM-pkg routines.
2374      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2375        be replaced by a 3D array that is computed before thermodynamics; for
2376        this, the tracer ID iTracer had to be included into the parameter list
2377        of ptracers_forcing
2378      - set up forward_step to call gchem_forcing, that will replace
2379        gchem_forcing_int in ptracers_forcing
2380      - cleaning up
2381    o small cleaning of exch2: remove files that are also in eesupp/src
2382    
2383    checkpoint56
2384    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2385    o mnc: cleanup "full" files--fixes out-of-memory problem
2386    o ECCO-GODAE
2387      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2388      * fully merged and updated from SIO code
2389        windstress sign change affects
2390        - exf_inscal_[u/v]stress
2391        - sign of xx_tau[u/v] adjustments
2392        - signs in cost_scat
2393      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2394      * natl_box_adjoint updated and compressed
2395      * 2-level checkpoint switch added
2396        (tested in EXP. 1 of natl_box_adjoint)
2397      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2398    o SVD
2399      * first complete, non-hacked version for SVD calculations
2400      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2401        performed via direct access files admtlm_vector.it????
2402        (via ctrl_[un]pack)
2403      * optimcycle is used for ARPACK iteration counter
2404        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2405      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2406        and add linear transforms where necessary
2407      * controls are initial/final SST, SSS (can be extended; need to check
2408        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2409    o mdsio: filename info to both stderr, stdout
2410    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2411      from sign change
2412    
2413    checkpoint55j_post
2414    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2415      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2416    o add consistent build directories and .cvsignore files to verification
2417    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2418    o make all subroutines 30 or less characters in length for certain older
2419      compilers to work (a thorough search only turns up two routines in
2420      pkg/ptracers)
2421    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2422      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2423    
2424    checkpoint55i_post
2425    o change arrays for total vertical diffusivity (2.D if explicit,
2426      3.D if implicit) ; each ptracer uses its own background value.
2427    o added mnc/NetCDF output capability to ocn_compon_interf
2428      - added bits to verification/cpl_aim+ocn so that it can run on
2429        ITRDA and other clusters without the mpirun "-wd" option
2430    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2431      configuration
2432    o give MNC the ability to create additional files rather than
2433      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2434      - the default is just less than 2GB which is a practical limit
2435        on many systems
2436    o Compute the non-local term using either KPP vertical diffusivity (=default)
2437       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2438    
2439    checkpoint55h_post
2440    o add verification test "vermix"
2441    o remove all the *_ioinc flags and replace with the single global
2442      outputTypesInclusive flag
2443    o allow to set a vertical profile of vertical diffusivity for T & S
2444    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2445    o useMNC moved from data.mnc to data.pkg
2446    
2447    checkpoint55g_post
2448    o Renaming carbon AD experiments to comply with testreport conventions
2449    o Updating adjoint of Held-Suarez hs94.1x64x5
2450    o Fixing directives for non-ECCO forward_step, after ECCO directives
2451      have been fixed to avoid recomp. of do_oceanic_phys
2452      Works well for global_ocean.90x40x15,
2453      but recomp. issue remains for carbon
2454    o Updating adjoint output for natl_box_adjoint after
2455      pkg/ecco has been modified (see taga c55d_post)
2456    
2457    checkpoint55f_post
2458    o rename to timeave_init_fixed
2459    
2460    checkpoint55e_post
2461    o some delicate re-shuffle of store directives to avoid one
2462      extra call of do_oceanic_physics
2463      affects ecco_the_main_loop.F, do_oceanic_physics.F
2464      checkpoint_lev1_directives.h
2465    o NB: this may break global_ocean adjoint temporarily,
2466      but it is clear how to fix it. Will do later, need this now.
2467    
2468    checkpoint55d_post
2469    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2470    o ecco_cost_weights is modified to 1x1 runs
2471    o modifs to allow observations to be read in as
2472      single file or yearly files
2473    o enable to read exf forcing fields as either
2474      single file or yearly files (flag useExfYearlyFields)
2475    checkpoint55d_pre
2476    
2477    o switch between 2-level and 3-level checkpointing
2478    o add ability of MNC to write local and "partial" (eg. 2D slices where
2479      the full 3D field is never actually stored) arrays to NetCDF files
2480      with the correct (that is, the complete multi-dimensional) set of
2481      array indicies
2482      - used in mom_vecinv() to write the diagFreq output
2483      - tested (demonstrated) in verification/aim.5l_cs
2484    o further mnc-ification
2485      - add verification/lab_sea to the list with mnc setups
2486      - fix undefined mnc v-names in cd_code
2487      - add kpp to mnc output (both snapshot and timeave)
2488    o non-hydrostatic code
2489      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2490        in calc_gw.F
2491      - defaults to viscAh
2492      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2493        friction or Leith) in non-hydrostatic mode, as long as there is
2494        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2495    o pkg/cost
2496      extend simple cost functions to treat time mean quantities
2497      (T,U,V) via cost_accumulate_state from cost_tile
2498    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2499        be 2 times larger than the minimum size the advection scheme requires.
2500        now get a perfect conservation of salt in advect_cs test-exp (updated)
2501    o GGL90 (Gaspar's TKE mixed layer)
2502      - add horizontal diffusion of TKE, requires exchanges in
2503        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2504        default. In OPA there is no horizontal diffusion of TKE but the
2505        mixing coefficients are computed from a horizontal average of TKE of
2506        6 points or so. I think that diffusion has a little more physical
2507        justification.
2508      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2509        was in vain)
2510      - mask tke-variable in ggl90_init
2511    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2512    o fix biharmonic diffusion on CS-grid.
2513    o more obcs stuff
2514      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2515        for reading boundary values. This routine is called from
2516        obcs_prescribe_read
2517      - updated obcs_check
2518      - changed sponge layer relaxation parameter units for days to seconds
2519      - turned off sponge layer by default
2520      - changed argument list of OBCS_CALC to myTime+deltaTclock
2521      - fixed about 35 bugs in obcs_external_fields_load
2522    
2523    checkpoint55c_post
2524    o obcs stuff
2525      - new runtime flags useOBCSprescribe, useOBCSbalance
2526      - re-arranged obcs_calc
2527      - moved exf_getobcs to obcs_prescibe_read
2528        obcs_prescibe_read is called after ORLANSKI stuff
2529        and independent of it (executable can contain all).
2530      - updated obcs_check
2531      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2532        These may be necessary only if tangential velocities are
2533        prescribed at OB, not sure, needs testing.
2534    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2535      which simplifies the calls and passes the ifc check-bounds test
2536    
2537    checkpoint55b_post
2538    o add a 2D scalar, Z location, exchange_2 routine.
2539    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2540      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2541      affects advect_cs results (for the wrong reason): update output.txt
2542    o use a more standard discretization for biharmonic viscosity ;
2543     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2544      affects results of dome set-up: update output.txt
2545    o fix gad_advection.F (CubedSphere part), back to version 1.23
2546    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2547    
2548    checkpoint55a_post
2549    o merged code to
2550      * prescribe/read time-dependent open boundaries
2551        (works in conjunction with exf, cal)
2552      * sponge layer code for open boundaries
2553      * each boundary N/S/E/W now has its own CPP option
2554        (healthy for the adjoint)
2555    
2556    checkpoint55
2557    o up-to-date adjoint of previous breaks
2558      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2559      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2560      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2561      - carbon: * remove tr1-related adjoint verification
2562                * add ptracer as control variable
2563    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2564      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2565    
2566    checkpoint54f_post
2567    o in verification/carbin/ remove experiment related to
2568      ALLOW_PASSIVE_TRACER (array tr1 etc)
2569      code_ad/ input_ad/ results_ad
2570    
2571    o add two new packages
2572      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2573        + subject to optimization (memory)
2574      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2575        + subject to reordering (many GOTOs in the original code)
2576        + so far opps is called for every (i,j) point, and then operates in
2577          the vertical; one may want to reorder the scheme in order operate in
2578          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2579          fields)
2580    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2581      - all verification tests compile and run with linux_ia32_g77
2582      - defaults are compatible with current input files--nothing
2583        should change if you were not previously using MNC
2584      - MNC output has been added in numerous places (eg. timeave)
2585        but there are still a few writes not yet do-able with MNC
2586        (this is in progress)
2587      - flags now allow for either/or/both use of MDSIO and MNC and
2588        documentation will soon follow
2589      - numerous small formatting cleanups for ProTeX
2590    o add version info (via BUILD_INFO.h) to MNC and stdout
2591    
2592    checkpoint54e_post
2593    o add two new packages
2594      - pp81 (Packanowski and Philander, 1981), Richardson number and
2595        stratification dependent mixing
2596      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2597      - these scheme operate in a similar manner as KPP (without ghat, of
2598        course), however there is only one diffusivity that is used for both
2599        temperature and salinity (and passive tracers)
2600    o add offline package
2601    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2602      provided by Stephanie Dutkiewicz
2603    o genmake2: add ability to search for C compilers and cleanup test output
2604      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2605    
2606    checkpoint54d_post
2607    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2608    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2609      leading to additional shift by 5 days each year of integration
2610       (i.e. leading to considerable offset over the years)
2611    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2612    o start with no AB and no initial filtering (staggerTimeStep):
2613      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2614    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2615      (external loading & cpl import/export stay in forward_step.F)
2616    o update coupling interface to work with new staggerTimeStep
2617    o change MDSIO ptracers_pickup.
2618    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2619    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2620    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2621    
2622    checkpoint54c_post
2623    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2624      this affects (truncation error) output.txt of test-exp:
2625       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2626    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2627    o change Qnet to always be the net heat flux, (+upward).
2628      affects (truncation error) output of natl_box exp.: updated
2629    o define the max number of passive tracers in PTRACERS_SIZE.h
2630    o start to test mnc routinely in exp0
2631    o add sea-ice loading (sIceLoad) as a new forcing field.
2632    
2633    checkpoint54b_post
2634    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2635       impressive on Altix and Opteron systems)
2636    o diagnostics can now write NetCDF files through the mnc package
2637    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2638    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2639    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2640      affects (truncation error) output of lab_sea & natl_box exp.: updated
2641    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2642    
2643    checkpoint54a_post
2644    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2645    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2646    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2647    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2648      + internal_wave (shift in writing cg2d_ini_res)
2649    checkpoint54a_pre
2650    
2651    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2652      - modified verification/lab_sea and natl_box_adjoint accordingly
2653    
2654    checkpoint54
2655    checkpoint53g_post
2656    o prepare splitting of thermodynamics: store convect.counter in common block
2657    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2658      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2659    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2660    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2661    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2662    o restore adjointability
2663    
2664    checkpoint53f_post
2665    o modifications that affect AIM experiment results (update output.txt):
2666      - no advection of S at top interface Nr (pkg/generic_advdiff)
2667      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2668    o AIM pkg:
2669      - include stability function into surf.Flux derivative relative to Tsurf
2670      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2671    
2672    checkpoint53e_post
2673    o merged cylindrical coord configuration
2674    o added rotating_tank experiment
2675    checkpoint53e_pre
2676    
2677    checkpoint53d_post
2678    o faulks upgraded: re-generate output.txt that have changed:
2679       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2680    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2681    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2682    o added Sadourny discretization of Coriolis
2683      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2684      - re-enabled use of omega3 (useAbsVorticity)
2685    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2686      vector-invariant equations
2687      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2688    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2689      hopefully without new bugs
2690      - still to do: biharmonic friction for non-hydrostatic w
2691    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2692    o regenerated output for global_ocean_ebm (using -ieee)
2693    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2694      of mom_common/
2695      - simple re-arrangement of instructions within computing loop
2696    checkpoint53d_pre
2697    
2698    checkpoint53c_post
2699    o new version of coupler for AIM+thSIce and Ocean models
2700     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2701     - land: change Evaporation of snow
2702     - aim with thSIce: fix bug in snow-precip.
2703    o changes to calc_gw.F
2704     - bug fix for w^2 term near the bottom boundary
2705     - (hopefully) improve the lateral slip boundary condtions for use with
2706        partial/looped cells
2707      - because the bug fix changes two verification experiments anyway (exp5
2708        and plume on slope), change the lateral boundary condition from half slip
2709        to the value of no_slip_sides
2710    o ebm package wasnt quite up to the parallel task. Fixed that.
2711    o Adjoint of EBM package + verification
2712      * TLM OK
2713      * ADM not sufficient accuracy yet (needs further testing)
2714    
2715    checkpoint53b_post
2716    o Commiting new energy balance model to repository
2717      * package is pkg/ebm
2718      * verif. is verification/global_ocean_ebm
2719      * references are in ebm_driver.F
2720    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2721    C        Global thermohaline circulation. Part I:
2722    C        Sensitivity to atmospheric moisture transport.
2723    C        J. Climate 12(1), 71-82
2724    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2725    C        Global thermohaline circulation. Part II:
2726    C        Sensitivity with interactive transport.
2727    C        J. Climate 12(1), 83-91
2728    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2729    C        Destabilization of the thermohaline circulation
2730    C        by atmospheric eddy transports.
2731    C        J. Climate 7(12), 1870-1882
2732    o Will need long integration testing.
2733    checkpoint53b_pre
2734    
2735    o created pkg/mom_common in preparation for variable viscosity code
2736    o renamed and split ini_mnc_io
2737    o pkg/land: only liquid water can diffuse or run-off
2738    o AIM using land: soil wetness availability account for snow
2739    o added printMapIncludesZeros to EEPARMS namelist
2740    
2741    checkpoint53a_post
2742    o restore TAMC compatiility for exf_constants.h
2743      (no usage of _d in .h)
2744    o Additional storing in KPP in an attempt to fix
2745      TAMC problem with adjoint of KPP code.
2746      (no success...)
2747      Identical code works fine with TAF.
2748    o Fixed verification/natl_box_adjoint experiments.
2749      Initial conditions for Experiments 4 and 5 are now
2750      set to "SEAICE_initialHEFF=0", which is more reasonable,
2751      and hence gives results closer to that of Experiment 2.
2752      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2753    
2754    checkpoint53
2755    o stable checkpoint with up to date adjoint
2756      TLM tests only run for 1st grdchk at the moment. Its unclear if
2757      this is a code problem or a problem with resetting code for g_
2758      variables that is being autogenerated wrong.
2759      Otherwise:
2760       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2761       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2762         are both still in chaos following their security messes.
2763    
2764    checkpoint52n_post
2765    o various build (mostly genmake2) changes including:
2766      - ability to build/run more easily within Cygwin and MacOS X
2767      - more complicated Makefiles with a stronger dependence on Gnu Make
2768    o pkg/seaice modifications
2769      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2770        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2771        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2772      - changed proxy for geostrophic velocity and updated
2773        verification/lab_sea/results/* accordingly
2774      - removed ADI dynamic solver from pkg/seaice
2775      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2776        they caused a segmentation fault under certain circumstances
2777      - removed unused field WATR
2778    o bug fix in exf-package:
2779      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2780         now reflect that.
2781    o small fixes in the cal-package:
2782      - set reference date to first of January for the 'model'-calendar
2783      - failing of cal_CheckDate in cal_FullDate now actually results in a
2784        warning
2785    o small modifications in exf-package to increase flexibility:
2786      - change climtempfreeze from a constant to a runtime parameter that
2787        is specified in data.exf_clim (default = -1.9)
2788      - introduce runtime parameter windstressmax (default = 2.0) that is
2789        specified in data.exf
2790    o fix in pkg/thsice:
2791      - update Evap (Tsf changes) to be consistent with Latent heat flux
2792      - maintain snow precipitation unchanged (even if Tsf >=0).
2793     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2794    
2795    checkpoint52m_post
2796    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2797      this does not change any of the results, because myIter=0 in swfrac always
2798      lead to jwtype=2 (the default anyway), but the call makes little sense
2799      as a default
2800    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2801    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2802      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2803    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2804    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2805    o extending useSingleCpuIO option to work with new exch2 I/O format
2806      - old-style, missing-tile I/O is still accessible by defining CPP
2807        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2808    o monitor package can write to NetCDF files and/or STDOUT
2809    o fix re-definition bug in MNC_GRID_INIT_ALL()
2810    o doc/api_reference added
2811      - a framework for building an API Reference Manual using all
2812        the "protex" comments embedded in the code
2813      - see pkg/generic_advdiff, pkg/mnc for examples
2814    o MNC:
2815      - make myThid the last argument for all subroutines
2816      - new default for the grid files: NO halos
2817      - add useMNC and other run-time flags
2818      - separate per-file-group handling of the unlimited dimension
2819      - early initialization of MNC w/ flags read at the eeboot stage
2820        and lookup tables set in initialize_fixed
2821      - write all MNC output to a freshly-created directory
2822    o thermodynamics sea-ice (thsice) is now tested with testreport.
2823    o test exp. advect_cs: use the standard cs32 grid ; update output.
2824    o Added functionality to grdchk:
2825      pick global i,j,k position (or nearest wet) where to perform check.
2826    
2827    checkpoint52l_post
2828    o new land formulation:
2829      a) use ground enthalpy as prognostic variable to ensure exact
2830         energy conservation.
2831      b) account for water temperature and for latent heat of freezing
2832         in all processes (rain, run-off, ground storage)
2833      c) compute surface and ground temperature implicitly.
2834    o aim_v23 modification for new land model:
2835      a) Treat separately land / ocean / sea-ice surface fluxes
2836         to allow implicit computation of land & sea-ice surface temp.
2837      b) add snow precipitation.
2838    checkpoint52l_pre
2839    
2840    o fix problem (when 1 tile is empty) in min/max monitor.
2841    o fix bug in timeAve (u,vZetatave in common block)
2842    o no restoring terms under ice for pkg/seaice
2843    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2844    o bug fix for pkg/seaice pickups
2845    o change MNC call locations and add coordinate attributes
2846    o mask vorticity at the corner ; affects global_ocean.cs output
2847    o fix ini_curvilinear_grid ; test CS experiments with mpi
2848    o aim.5l_cs: modify sea-ice fraction input file ; update output
2849    o exf: Adding simple range check routine for exf fields after read
2850    
2851    checkpoint52k_post
2852    o removed top-level directory "diags"
2853      - we migrated these functions to pkg/timeave a long time ago
2854    o fixed bug introduced in pkg/monitor
2855    o accuracy ctrlprec = 32 insuffient for gradient checks using
2856      averaged fields (I/O via cost_averages)
2857      -> use ctrl.h in active_file*.F to control I/O precision.
2858    o paramter list of CALL ADTHE_MAIN_LOOP
2859    o added initial do_the_model_io to ecco
2860    o set all ...Freq to zero after cost_final
2861      taveFreq, dumpFreq, pChkptFreq
2862    o MAIN and ECCO differentiability restored
2863    
2864    checkpoint52j_post
2865    o fix nchklev in tamc.h for global_ocean...
2866    o Bringing flow and store directives up-to-date
2867    o Really weird thing!
2868      call do_the_model_io from the_main_loop with parameters
2869      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2870      TAF places a faulty re-call of initialise_varia
2871      after cost_final call which should not be there!
2872    checkpoint52j_pre
2873    
2874    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2875      error messages
2876    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2877    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2878      debug output
2879    o modfied mdsio_writefield.F to handle non-global files under exch2
2880    o update AIM Cubed-Sphere exp (aim.5l_cs):
2881      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2882    o update AIM Equatorial Channel exp:
2883      use standard aim_v23 pkg and change the SST fields to be more realistic.
2884    o globalFile now works with exch2
2885    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2886      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2887    o limit timeave output for hi-res integrations
2888    
2889    checkpoint52i_post
2890    o removed CPP_EEOPTIONS.h from verification/*/code
2891    o updated the tiling for global_ocean_pressure
2892    checkpoint52i_pre
2893    
2894    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2895      the old pkg/aim).
2896    
2897    checkpoint52h_pre
2898    o shortened offending lines in exch2_send_rx?.template
2899    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2900    o genmake2: add build & execute test for NetCDF code
2901    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2902      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2903    o added useSingleCPUIO flag to monitor.F and mon_out.F
2904    o added temporary hack for sea-ice dynamics on the cube:
2905      metric terms are ignored and it is assumed that
2906      there is no sea-ice on cube faces 1, 2, 4, and 5.
2907    
2908    checkpoint52f_post
2909    o added exch2 cube routines to pkg/exch2
2910    o modified hs94.cs-32x32x5 to use it
2911    o added new grid files to hs94.cs-32x32x5
2912    checkpoint52f_pre
2913    
2914    checkpoint52e_post
2915    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2916      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2917    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2918      to work with implicit vertical advection and AB ;
2919    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2920    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2921     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2922    checkpoint52e_pre
2923    
2924    o fix bug in impldiff when Nr=1 or Nr=2.
2925    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2926    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2927    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2928      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2929    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2930    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2931    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2932    
2933    checkpoint52d_post
2934    o re-tiled many expts to allow comparison in multi-processor mode
2935      - updated output accordingly
2936      - changed hs94.128x64x5 to use intial T from file rather than use the
2937        random number generator
2938    o add infrastructure in model routines for fizhi and gridalt packages
2939    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2940    o changes to permit hi-res, cubed-sphere, configuration
2941      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2942      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2943      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2944        of surface winds for the cube
2945      (A verification experiment, based on global_ocean.cs32x15, but with
2946       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2947       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2948       complete with example surface forcing files and matlab scripts to look
2949       at the output and compare it with that of global_ocean.cs32x15.)
2950    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2951       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2952       to conform to the common rule.
2953    o check-in the first version of the coupler + interfaces for multi-components
2954       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2955       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2956       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2957       - ocean and atmos. share the same horizontal grid (no interpolation).
2958       - exchanges between component and coupler is done in forward_step
2959    o new verification experiment, cpl_aim+ocn:
2960       coupled ocean - AIM atmosphere on cs32 grid.
2961    
2962    checkpoint52d_pre
2963    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2964    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2965    
2966    checkpoint52c_post
2967    o Fixing OPTIONS files for use of exf:
2968      - ALLOW_ECCO not needed
2969      - ECCO_CPPOPTIONS.h should not be included from
2970        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2971        as has been the case in the past
2972      - All cal/exf related options are currently set in
2973        single header file. Should remain so until we
2974        agree on a consistent new policy.
2975    o Removed all CPP options for cal package.
2976      cal has no more CPP options.
2977    o modified STOREs in GAD_ADVECTION
2978    o corrected key comp. for passkey
2979    
2980    checkpoint52b_post
2981    o new version: "thsice" of thermodynamic sea-ice pkg:
2982     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2983     - modify fluxes but do not change theta directly;
2984     - light cleaning of bulk_force pkg (still needed with thsice).
2985     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2986       + output_thsice.txt to test thsice & bulk_force pkgs.
2987    o put back grid & coriolis monitor output.
2988    checkpoint52b_pre
2989    
2990    o call "do_the_model_io" at the beginning (=> dump initial state)
2991    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2992    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2993      (need info on NUMBER_OF_PTRACERS)
2994    o missing PTRACERS headers in some routines
2995    o default tamc.h in pkg/autodiff supposed to crash
2996      to ensure proper customization
2997    
2998    checkpoint52a_post
2999    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
3000      - moved surfaceTendencyTice from pkg/seaice to main code
3001      - subroutine FREEZE_SURFACE now limits only surface temperature
3002        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
3003        => new output.txt for global_ocean.cs32x15 & global_with_exf
3004      - keep the old version of FREEZE for backward compatibility;
3005        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
3006      - corresponding modifs for TAF directives
3007    o added surface flux output variables to TIMEAVE_STATVARS
3008    o time-averaged output for pkg/ptracers
3009    o fix problem with ECCO-related divided adjoint
3010      snapshot file was missing some ad-variables,
3011      but no warning issued by TAF
3012    
3013    checkpoint52a_pre
3014    o some bug fixes for #undef REAL4_IS_SLOW
3015    
3016    checkpoint52 = ecco_c52_e35
3017    o after testing adjoints of checkpoint51u_post
3018    
3019    checkpoint51u_post
3020    o this is the post-merge tag of the ecco-branch
3021      (needs another clean checkout and re-testing)
3022    o various natl_box_adjoint configs and results
3023      but no input fields
3024    o obcs adjoint not yet merged!
3025    o adding ECCO global 1x1 and 2x2 degree configs
3026    o updated/extended some store directives for seaice
3027    o pkg/ecco now containes ecco-specific part of cost function
3028    o top level routines the_main_loop, forward_step
3029      supersede those in model/src/
3030      previous input data.cost now in data.ecco
3031      (new namelist ecco_cost_nml)
3032    o in ctrl/ cleaned some cross-dependencies and updated CPP options
3033    
3034    checkpoint51t_post
3035    o this is the pre-merge tag of the ecco-branch
3036    
3037    checkpoint51s_post
3038    o cleanup: removed various obsolete #define-s
3039    o pkg/grdchk
3040      - renamed 'ph-grd 3' to 'grad-res'
3041      - merged from ecco-branch
3042        (remaining bug fixes for obcs gradient checks)
3043      - additional high-precision output for testreport
3044        (grep for 'precision_grdchk_result')
3045    
3046    checkpoint51r_post
3047    o cleaned up or removed CPP_OPTIONS.h files
3048    o updated results for some of the tests to reflect the new
3049      optfiles (-ieee: -O0 instead of -O3)
3050    
3051    checkpoint51q_post
3052    o cd_code:
3053      - moved cd_scheme.F -> cd_code_scheme.F
3054      - separate read_checkpoint from cd_code_ini_vars.F
3055      - separated cd_code part from write_checkpoint
3056      - updated AD_SOURCE, generated .flow
3057      - added CD_CODE_VARS.h to the_main_loop
3058      - Moving cd_code specific store dir.s to pkg/cd_code
3059    o ctrl package totally restructured
3060      - pack/unpack now optional and decoupled from
3061        xx_/adxx_ I/O
3062      - ctrl_pack/unpack cleaned
3063        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
3064      - confined inclusion of AD_CONFIG.h to where necessary.
3065    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
3066    
3067    checkpoint51p_post
3068    o create initial cd_code package
3069      - WARNING: the initialization of fields within packages
3070        is broken because INI_FIELDS (where READ_CHECKPOINT is
3071        called) is called *before* PACKAGES_INIT_VARIABLES.
3072        This seems to be backwards since
3073        1) its important to initially zero the entire field including
3074           the "halo" region
3075        2) zeroing needs to be done *before* reading pickup info
3076           and the pickup call might or might not happen in any
3077           particular run
3078      - this needs an overhaul for R2
3079    o cleanup verification/*/code/GMREDI_OPTIONS.h
3080    o cleanup testreport
3081    
3082    checkpoint51o_post
3083    o bringing AD-related verif's up to date with genmake2
3084      - carbon/
3085      - global_ocean.90x40x15/
3086      - hs.94.1x64x5/
3087      - (front_relax/ )
3088    o (more) consistent directory structure for AD-related verif.'s
3089    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
3090    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
3091    o bug fix in find_alpha.F for MDJWF:
3092      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
3093        change rho -> rho-rhoConst
3094      - replace call find_rho to find_rhonum
3095    o initialisation of rFlx extended to full array (required by TAF)
3096      and shifted to thermodynamics
3097    o removed PTRACERS.h in ptracers routine
3098    o added surfacetendencyPtr to S/R parameter list pracers_forcing
3099    o Correcting initialisations for fVerU, fVerV.
3100    o helping TAF to recognize dependency on kUp for
3101      fVerU, fVerV
3102    o Replacing delZ by delR in pkg/ctrl/
3103    checkpoint51o_pre
3104    
3105    o undid all of cp51 pending some cleanups and discussion
3106    o added the [#include "AD_CONFIG.h"] statement to all files that need
3107       it for adjoint/tl #defines
3108     o re-worked the build logic in genmake2 to support AD_CONFIG.h
3109     o removed tools/genmake since it no longer works
3110    
3111    checkpoint51n_post
3112    o modifications to make FREEZE flux visible to pkg/kpp
3113      - moved surfaceTendencyTice from pkg/seaice to main code
3114      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
3115      - subroutine FREEZE now limits only surface temperature
3116        (this means new output.txt for global_ocean.90x40x15,
3117         global_ocean.cs32x15, and global_with_exf)
3118    o added surface flux output variables to TIMEAVE_STATVARS
3119    
3120    checkpoint51n_pre
3121    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
3122    o added [#include "AD_CONFIG.h"] to all files that use the following
3123      defines:
3124      - ALLOW_ADJOINT_RUN
3125      - ALLOW_TANGENTLINEAR_RUN
3126      - ALLOW_ECCO_OPTIMIZATION
3127    
3128    checkpoint51m_post
3129    o incorporating changes to get TAMC/TAF working in genmake2
3130      - added new TAMC/TAF targets to the Makefile
3131      - various cleanups related to package handling
3132      - these changes should have no impact on the forward model
3133    
3134    checkpoint51l_post
3135    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
3136     - faster algorithm for cal_addtime.F
3137     - higher precision arithmetic, where needed
3138     - pkg/exf *startdate variables changed from calendar date to
3139       model integration time
3140    
3141    checkpoint51l_pre
3142    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
3143    o enable to apply restoring on S & T only in a latitude band.
3144    o update output (external_forcing_surf modif. change truncation errors)
3145       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
3146    
3147    checkpoint51k_post
3148    o change default to: useNHMTerms=.FALSE.
3149     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
3150       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
3151     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
3152        exp1, ideal_2D_oce
3153     - change data file of oceanic exp (leave the results unchanged for now)
3154       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
3155    o set gravitySign automatically according to the vertical coordinate used
3156      (and change sign: back to "logical" value: +1 when R increases downward)
3157    o added an include barrier to the default CPP_OPTIONS.h and
3158      removed the #include "PACKAGES_CONFIG.h" from it
3159    o fix a bug in mom_fluxform (from chk51j_post)
3160    
3161    checkpoint51j_post
3162    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
3163    o adjusted some flow directives (dynamics, thermodynamics)
3164    o added cubed-sphere case to test cost function
3165    o heckpoint_lev?_directives.h now include
3166      pkg-specific directives, whenever those are enabled.
3167    o Moving pkg-specific flow directives to corresponding pkg
3168      Moving pkg-specific differentiation list to corresponding pkg
3169      Moving pkg-specific checkpoint-lev storing to corresponding pkg
3170      ---> conventions are
3171           - pkg_ad.flow
3172           - pkg_ad_diff.list
3173           - pkg_ad_check_lev?_dir.h
3174    
3175    checkpoint51i_post
3176    o merge of the branch-genmake2
3177      - knowingly breaks the older genmake
3178      - automatic generation of all ALLOW_${PKG_NAME} defines
3179      - new testreport supersedes older testscript
3180    o large number of package inclusion and header cleanups
3181    checkpoint51i_pre
3182    
3183    o new output for adjoin of global ocean vector invariant
3184    o fix for checkpoint of thermodynamic seaice and bulk_force
3185    o Steph gchem various cleanups
3186    
3187    checkpoint 51h_pre
3188    o fixed some single quotes
3189    o modify gchem pkg to be more versatile
3190    o modifications to clean up dic pkg
3191    o add pkg/cfc
3192    
3193    checkpoint51g_post
3194    o provide links for ARPACK and ADM*TLM
3195    o start removing verification/vero/
3196    o update AD-related stuff
3197      (in particular some IF-statements in model/src/ routines)
3198    o adding to verification/global_ocean.90x40x15/ adjoint of
3199      vector invariant setup
3200    
3201    checkpoint51f_post
3202    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
3203    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
3204      of tracer Green's fucntions for ocean inversion project.
3205    
3206    checkpoint51f_pre
3207    o Added on-the-fly spatial interpolation capability
3208        "USE_EXF_INTERPOLATION" to pkg/exf.
3209      - This is a temporary Cartesian-grid hack until
3210        the super-duper ESMF coupler becomes available.
3211      - See verification/global_with_exf/README for usage example.
3212      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
3213        flags and modified pkg/seaice accordingly.
3214    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
3215        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
3216        non-local transport term.
3217    
3218    checkpoint51e_post
3219    o pkg/mom_vecinv:
3220      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
3221      - add time-ave diagnostic of vorticity advection.
3222    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
3223    o atmospheric geopotential: - include water vapor effect;
3224                                - use p^kappa in p* scaling.
3225    o land pkg: read initial state from files.
3226    o AIM : add stratospheric drag in the upper level
3227    
3228    checkpoint51d_post
3229    o change function ILNBLNK (=> last non-blank char.) to return zero
3230      (instead of the string length) when the string. char is empty
3231    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
3232    o modif's to restore TAMC compatibility
3233      - avoid "_d" constructs in PARAMETER declarations
3234      - avoid interrupting lines by comment lines
3235    o Use cluster local disks for purely local I/O
3236      vs. globally visible disks needed for ctrl stuff
3237      (merged from ecco-branch)
3238      - new active_file_loc... and mdsio_..._loc routines
3239      - affected packages: autodiff, ctrl, grdchk, mdsio
3240    
3241    checkpoint51c_post
3242    o introducing integer flag debugLevel
3243      - debLevZero: suppress all output
3244      - debLevA: standard
3245      - debLevB: equivalent to current debugMode=.TRUE.
3246    o introducing pathname variable mdsioLocalDir for mdsio
3247      that can be specified at runtime
3248      (relevant for cluster I/O to local disk)
3249    `
3250    >>>checkpoint51b_post
3251    adjoint of ptracers
3252    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3253    o extended state in checkpoint_lev?, etc.
3254    o alternative ctrl/cost with tr1 or ptracer
3255    o new comlev1_bibj_ptracers
3256    o new ptracers.flow
3257    o made ptracers_forcing same as external_forcing_s
3258    o added verification for adjoint with ptracers
3259      - adm. grdchk fail so far
3260      - tlm. grdchk OK
3261      - checked tapelev/comlev recomputations: OK
3262    <<<checkpoint51b_pre
3263    
3264    checkpoint51a_post
3265    o added code for biogeochemistry package
3266      - new pkgs: dic, gchem
3267      - new subroutine in ptracers
3268    o modify code for biogeo packages
3269      - in model/src and pkg/ptracers
3270    
3271    checkpoint51
3272    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3273      - autodiff, ctrl, exf, grdchk, seaice
3274      kept separate packages
3275      - cost, ecco, obcs
3276    o updating verification/internal_wave, verification/lab_sea
3277      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3278    
3279    checkpoint50i_post
3280    o Preparing next differentiable checkpoint and sync
3281      of MAIN vs. ecco-branch
3282      - 1st step: this one is differentiable
3283      - 2nd step: next(! not this) checkpoint will have updated packages
3284                  from ecco-branch)
3285    
3286    checkpoint50h_post
3287    o new package "land": provide surface BC for AIM.
3288    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3289    o AIM: use true log-P extrapolation for near surface temp (= as in
3290        F.Molteni paper) ; update aim.5l_cs output.
3291    o New variable in PARM03 for more flexible pickups
3292    o somewhat cleaned package initialisation sequence for
3293      ctrl/ cost/ ecco/ in packages_... routines
3294    
3295    checkpoint50g_post
3296    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3297      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3298      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3299        made the default because of faster convergence than ADI
3300    
3301    checkpoint50f_post
3302    o exf totally restructured
3303      - replaced all exf_set_ routines by one generic exf_set_gen.F
3304        and made sure it's still differentiable
3305      - split exf_getffields.F into new exf_bulkformulae.F
3306      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3307      - updated adjoint/makefile and relevant verif. accordingly
3308    
3309    checkpoint50f_pre
3310     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3311          + change Evap over land. (update aim.5l_cs output)
3312     o added missing .cvsignores and made uniform across expts
3313     o changed configuration of tidal_basin_2d expt
3314     o added pkg/debug functions for tracing code in fatal crashes
3315     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3316     o new fn in pkg/monitor to stop model if solution grows too big
3317     o removed lots of single quotes from comments
3318    
3319    checkpoint50e_post
3320    o make KPP work with PTRACERS
3321     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3322       nearly a copy of kpp_transport_s
3323     - there is no analogue to SurfaceTendencyS, so I have to use
3324       gPtr(of the surface layer) instead
3325    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3326    checkpoint50e_pre
3327    
3328    checkpoint50d_post
3329    o change kpp output from multiple-record state files to single-record state
3330      files analogous to write_state.F
3331    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3332      analogous to the cg2d-related output.
3333    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3334      so that writing to internal file fn (with length 512) fails.
3335    checkpoint50d_pre
3336    
3337    checkpoint50c_post
3338    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3339    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3340    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3341    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3342    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3343    
3344    checkpoint50c_pre
3345    Merging from release1_p13:
3346    o bug fix for pkg/seaice dynamic solver
3347    o Added SEAICE_initialHEFF to pkg/seaice
3348    
3349    checkpoint50b_post
3350    o store u*,v* in gU,V instead of in guNm1,gvNm1
3351    o in order to put the momForcing out of the Adams-Bashforth:
3352      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3353      to timestep.F
3354    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3355    o re-generate output for highly sensitive test-exp:
3356       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3357    
3358    checkpoint50b_pre
3359    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3360    o corrected CPP option mismatch in exf_Bulk... functions for case
3361      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3362    
3363    checkpoint50a_post
3364    o Bug fix for merging between c50 and KPP.
3365      ikey was passed from thermodynamics to kpp_calc via
3366      common block rather than being recomputed in kpp_calc,
3367      in contradiction with new key itdkey.
3368      New key ikppkey created, and tamc.h headers updated.
3369    
3370    checkpoint50
3371    - 2nd step of merge with ecco-branch:
3372      merge changes in ecco-branch back into main trunk
3373    - bug fix in find_alpha
3374    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3375    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3376    - merged some sliced AD support routines
3377    
3378    checkpoint49
3379    merged from ecco-branch:
3380    o exf:
3381      - Enable initialisation of forcing fields to constant
3382        (runtime) values.
3383      - in exf_getffields.F
3384        Reduce i-/j-loop to interior domain, discarding overlaps.
3385        That also fixes wrong TAF-key computations for key_1, key_2
3386        with bulf formulae.
3387      - exf_init.F modify #ifdef for exf_init_evap
3388      - exf_getffieldrec.F, ctrl_getrec.F
3389        The following INT-usages are not safe:
3390          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3391          fldcount = int(fldsecs/fldperiod) + 1
3392        and were modified.
3393    o autodiff: checkpoint_lev...
3394      - updated storing for bulk formulae (some arrays were missing)
3395      - added state for seaice package
3396      - synchronized with main branch
3397    o DIVA:
3398      Modif.s in
3399      - the_main_loop.F
3400      - the_model_main.F
3401      and added cost_final_restore.F cost_final_store.F
3402      o With these changes, it is possible to fully separate
3403        the first forward run to compute the cost function (mdthe_main_loop)
3404        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3405        into separate model executions.
3406        This enables better tuning of DIVA to given queue sizes.
3407      o Loss of cost function value in consecutive DIVA runs is
3408        fixed by storing to 'costfinal' file.
3409      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3410        beginning/end of adjoint integration is accounted for.
3411      The current changes apply to TAF-1.4.26.
3412      TAF has one remaining bug, requiring one manual change
3413      (see MITgcm manual).
3414    o cal: synchronized between MAIN and ecco-branch
3415    
3416    checkpoint48i_post
3417    o Changes to restore differentiability of code w.r.t. previous tag
3418      (mostly adding new routines to make list and replacing
3419      pressure by totPhiHyd).
3420    o Updated and merged grdchk package
3421      - has both ADM and TLM checks
3422      - works for single- and multi-proc.
3423      - output cleaned
3424      - worked successfully for parallel DIVA
3425    o genmake:
3426      - Adding -platform=SP4
3427      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3428    o Modif. for DIVA:
3429      ctrl_unpack should not be called in intermediate DIVA interval.
3430      (similar thing would apply for active files such as
3431      tbar, sbar, psbar, which should not be reinitialised;
3432      only relevant for ecco-branch)
3433    
3434    checkpoint48h_post
3435    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3436    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3437    o Added SEAICE_initialHEFF to pkg/seaice
3438    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3439    
3440    checkpoint48g_post
3441    --- EOS:
3442    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3443      store total Potential in totPhyHyd for diagnostics & EOS.
3444    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3445    --- Pressure/geopotential gradient:
3446    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3447    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3448      ( changes results of global_ocean_pressure )
3449    o NLFS + z-coord.: add eta*Rho' contribution.
3450    o accurate phiHyd when using interface-W at the middle between 2 centers
3451     ( changes results of ideal_2D_oce )
3452    o includes r* 2nd term in potential gradient.
3453    
3454    checkpoint48f_post
3455    Merging from release1_p12:
3456    o Modifications for using pkg/exf with pkg/seaice
3457      - improved description of the various forcing configurations
3458      - added basic radiation bulk formulae to pkg/exf
3459      - units/sign fix for evap computation in exf_getffields.F
3460      - updated verification/global_with_exf/results/output.txt
3461    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3462      (SBO) core products, including oceanic mass, center-of-mass,
3463      angular, and bottom pressure (see pkg/sbo/README.sbo).
3464    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3465      to avoid negative values in shallow regions.
3466      - updated verification/natl_box/results/output.txt
3467      - updated verification/lab_sea/results/output.txt
3468    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3469    o Added useSingleCpuIO option (see PARAMS.h).
3470    o Updated useSingleCpuIO option in mdsio_writefield.F to
3471      work with multi-field files, e.g., for single-file pickup.
3472    o pkg/seaice:
3473      - bug fix in growth.F: QNET for no shortwave case
3474      - added HeffFile for specifying initial sea-ice thickness
3475      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3476    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3477      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3478    o pkg/seaice:
3479      - adjoint-friendly modifications
3480      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3481    
3482    checkpoint48e_post
3483    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3484    o dynamics: change definition of computational domain & adapt mom_fluxform
3485      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3486    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3487        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3488        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3489        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3490        inverted_barometer solid-body.cs-32x32x1
3491      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3492    
3493    checkpoint48d_post
3494    o in preparation for r*:
3495     a) use pre-computed gradient of hydrostatic potential:
3496        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3497     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3498        => affects results of glob_oce_pressure (different truncation error)  
3499      update output.txt of ideal_2D_oce & global_ocean_pressure
3500    
3501    checkpoint48d_pre
3502    o in preparation for r*:
3503      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3504      pass the 2 comp. of the grad. as arguments to momentum S/R.
3505      but for the moment, only used if it does not change the results.
3506    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3507    
3508    checkpoint48c_post
3509    Modifications in treatment of initial flux forcing controls
3510    to avoid extra storing of flux fields.
3511    
3512    checkpoint48c_pre
3513    o Added tidal_basin_2d experiment (currently 1D!)
3514    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3515    
3516  checkpoint48b_post  checkpoint48b_post
3517  o r* coordinate added in #ifdef NONLIN_FRSURF block.  o r* coordinate added in #ifdef NONLIN_FRSURF block.
3518   (modification to pressure gradient not yet implemented)   (modification to pressure gradient not yet implemented)

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