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revision 1.194 by dimitri, Thu Oct 23 07:14:48 2003 UTC revision 1.1106 by jmc, Tue May 26 19:21:14 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    checkpoint61o
8    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
9    o model/src/ini_curvilinear_grid.F:
10       compute angleSin/CosC when they are not read from a file
11    o pkg/seaice:
12       add pseudo time stepping for LSOR
13    o pkg/exch2:
14       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
15    o pkg/seaice:
16       Adding separate sea ice albedo, drag coefficients, and HO in Southern
17       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
18    o SingleCpuIO:
19       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
20    o pkg/seaice:
21       put exchanged variable in (local) common block for MPI+Multi-Threads
22       to work (necessary with exch1, and for now with exch2 too).
23    o verification: to get more experiments tested with mpi, mth and mpi+mth,
24      change tiling of:
25       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
26       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
27      update output of exp:
28       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
29       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
30      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
31                       (note: output.txt generated on faulks using only 1 tile)
32    o eesupp & mdsio (SingleCpuIO):
33     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
34       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
35       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
36     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
37     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
38       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
39    o pkg/exch2:
40     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
41       read parameter file "data.exch2" if it exists; otherwise try default regular
42       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
43     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
44       with new code (not to be used, just as a backup solution).
45     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
46       in utils/exch2/input.
47    
48    checkpoint61n
49    o eesupp & mdsio (SingleCpuIO):
50      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
51        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
52        receive real*4 array (instead of real*8) to read/write 32.bit files.
53        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
54         and remove new mapping S/R)
55    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
56      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
57        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
58        when using exch2. Add S/R to map global io-buffer to global model array.
59      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
60    
61    checkpoint61m
62    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
63      and add 3 other S/R for other types (R4,R8,RS).
64      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
65    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
66     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
67     - reduce number of macro definitions (keep only those which are used);
68       can always call directly the corrresponding S/R if needed.
69     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
70       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
71     Fixed wrong type of arg in:
72       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
73       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
74     To fix: global_sum of var in common block is wrong (multi-threaded) in:
75       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
76     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
77    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
78      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
79    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
80    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
81      edges are closed (zero depth); might happen with "blank tiles";
82      for now, disabled if using OBCS.
83    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
84      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
85    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
86      to reduce length of 1.D array print in STDOUT.
87    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
88      + use 48 tiles (16x8): this will allow to test "blank tiles".
89    o start to test MPI + multi-threaded (change testreport to skip tests
90      where number of tiles do not match).
91    o genmake2: add option "-omp" to turn on Open-MP ;
92      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
93    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
94      and keep the original tile numbering. Note: compatible with old
95      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
96    
97    checkpoint61l
98    o Overlaps had been forgotten in calculating ijk keys : fixed
99    o fix cyrus makedepend for gcc 4.4
100    o experiment fizhi-cs-aqualev20:
101      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
102      and generate new output. Note: new output is much closer to the old
103      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
104      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
105    o pkg/fizhi:
106     - change to avoid indices going deliberately over array-bounds
107     - remove unnecessary MPI stuff
108     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
109     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
110       does not go over array-bounds and therefore returns reliable output.
111     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
112       this S/R has 4 output arguments, which are used inside "get_alarm";
113       when it is called with the same variable "ndum" in place of several
114       output arguments, this produces weird side effect inside "get_alarm"
115      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
116       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
117       address) and produces error.
118    o tools/gemake2: (March 27-29 2009)
119      with option "-mpi": link *_mpi files from "MODS" dir (this is what
120      testreport does).
121    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
122    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
123       update lab_sea.lsr & lab_sea.salt_plume results
124    o pkg/seaice:
125      Major overhaul of the LSOR solver: change discretization from original
126      finite differences to finite volume. The old routine is still in the
127      file seaice_lsr.F and can be turned on with the CPP-flag
128      SEAICE_OLD_AND_BAD_DISCRETIZATION
129      Along with this change, the discretization of the strain rates is changed.
130      The same flag turns on the old discretization in seaice_calc_strainrates.F
131      All verification experiments with seaice are affected (except for
132      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
133      results by setting the above flag.
134      Further changes involve changes in defaults:
135      - ALLOW_FLOODING is defined and turned on by default
136      - SEAICEadvSnow = .true. is now the default
137      - SEAICEadvSalt = .true. is now the default
138      - SEAICEadvAge  = .true. is now the default
139      - SEAICE_clipVelocities  = .false. is now the default
140                                         (as per J. Zhang's recommendation)
141      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
142        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
143      - seaice_growth: replace computation of UG by a simple copy from wspeed
144    
145    checkpoint61k
146    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
147      seaice_lsr: fixed a few metric terms,
148                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
149                  add more debugging diagnostics
150      seaice_evp: removed superfluous many metric terms of FV discretization
151                  of stress divergence
152                  affects lab_sea, lab_sea.hb87
153      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
154                  of stress divergence for non-evp solver
155                  (this part is not tested anywhere)
156      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
157                  they were effectively only half slip
158                  affects lab_sea.hb87
159      updated all relevant verification experiments (except lab_sea//output_adm.txt
160        which was left over, but fails at level 7 & 6)
161    
162    checkpoint61j
163    o pkg/seaice: turn a few hard wired parameters into run time parameters
164    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
165      time in seconds as promised by the usints in seaice_monitor and exf_monitor
166    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
167      that are not cubed-sphere grids
168    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
169    o pkg/ctrl:
170      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
171    o non-hydrostatic (calc_gw.F):
172      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
173      update output of exp. global_ocean.cs32x15.viscA4
174    o remove backward compatibility for thetaMin,phiMin
175      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
176    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
177      interpolated wind field not only for curvilineargrid=.true., but also
178      for a rotated grid (rotateGrid=.true.)
179    o pkg/exf: add capability to bypass interpolation for runoff
180      by setting yet another CPP-flag
181    o eesupp/src, B-grid exchange:
182      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
183    o autodiff
184      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
185      allows to switch to single-prec common blocks;
186      corresponding switch occurs in tamc.h, integer isbyte
187      TAF store directivs "byte" and "kind" seem equivalent;
188      Most tamc.h have been updated correspondingly.
189    
190    checkpoint61i
191    o autodiff:
192      fix autodiff_sore/_restore indices for obcs
193      (spotted by I. Hoteit, M. Mazloff)
194    o pkg/autodiff, pkg/ctrl:
195      Add flag to reduce all tapelev I/O to single-prec.
196      In data.ctrl set
197        doSinglePrecTapelev = .TRUE.
198    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
199      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
200    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
201      real fresh water flux (not yet)
202    o pkg/mdsio & rw:
203     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
204     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
205    o pkg/flt:
206     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
207       init_fixed & ini_varia.
208     - clean-up & simplify linear interpolation S/R:
209       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
210     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
211     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
212     - add vert. coordinate & horiz. indices to output files.
213     - change vertical position in initial condition, from index to depth [m].
214     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
215       (easier to get to a curvilinear grid) ; delX,delY no longer used.
216    o pkg/ggl90: a few modifications:
217     - fix bottom boundary condition, and interpolation of KappaE
218       near top and bottom
219     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
220     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
221     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
222    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
223      (maintain temporary backward compatibility, until next checkpoint)
224    
225    checkpoint61h
226    o pkg/diagnostics with "periodic averaging diagnostics":
227      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
228    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
229    o pkg/obcs: fix loop ranges for balancing code
230    o pkg/flt:
231     - improve criteria for finding which tile owns a float.
232     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
233    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
234      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
235      with ocean biogeo)
236    o pkg/flt:
237     - do some cleaning and fix the restart ;
238     - add output.txt in flt_example/results to get this pkg tested.
239    o genmake2: add an EXTENDED_SRC option and flag.
240       for now, cannot be turned on on command line (only through genmake_local)
241    o pkg/mdsio: read/write vector:
242     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
243     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
244       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
245     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
246      (drop to 4 digits matching for grad). But this test does not look very
247      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
248    
249    checkpoint61g
250    o pkg/flt:
251      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
252       + make OPTIONS file more standard.
253      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
254      - fix _BYTESWAPIO CPP-Flag
255      - standard reading of file-parameter "data.flt"
256      - fix argument list of S/R FLT_RESTART
257      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
258    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
259    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
260      a still unfixed compiler/optimization bug
261    
262    checkpoint61f
263    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
264      update results of global_ocean.cs32x15.icedyn test.
265    o move getcon.F from model/src to pkg/fizhi.
266    o pkg/exf: add parameter for extrapolation of temp up to the surface
267       and option to prevent negative evap (in bulk_largeyeager04 only).
268    o Prather Advection scheme: fix tracer conservation for divergent flow
269      (e.g., when using NonLin Free-Surface).
270    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
271    o gmredi (Visbeck-variable-K):
272     - add more parameters to Visbeck-variable-K.
273     - use a 5 points average for dSigmaR in Visbeck-K calculation
274       (more "homogenous": same stencil and same weights as in dSigmaH)
275     - update output of ideal_2D_oce experiment.
276    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
277      (#undef REAL4_IS_SLOW)
278     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
279       coordinate variable
280     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
281       (surface forcing fields), removes some of the functionality
282     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
283     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
284       probably not all: copy _RS surface flux fields to RL field before
285       calling DIAGNOSTICS_FILL
286     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
287       real*4 (CALL EXCH_*_RS) versions.
288     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
289       (generate new output).
290    
291    checkpoint61e
292    o gmredi (Visbeck-variable-K):
293      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
294      - change computation of Visbeck-K where Slope > Smax :        
295        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
296        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
297    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
298      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
299    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
300    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
301      does not become too large (to avoid precision problems in implicit-diffusion
302      solver); update ideal_2D_oce output.
303    o pkg ggl90:
304      - in ggl90_cal.F: compute only one set of visc/diff, used to
305        step forward TKE/T/S/momentum
306      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
307        have Prandlt =1)
308    o gmredi (fm07):
309      - add lower limit on Transition layer thickness + lower limit on 1/lambda
310      - allow to set few more params from data.gmredi
311    o pkg ggl90:
312          - add missing sqrt(2) factor in computation of mixing length
313            scale in ggl90_calc.F
314            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
315    
316    checkpoint61d
317    o adjoint modifs
318      - adapt to new field rhoInSitu
319      - allow to revert from StoreDynVars2D, StoreDynVars3D
320        to individual fields
321        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
322    o store 3-D (in-situ) density in commom block (DYNVARS.h)
323     - save 1 rho computation.
324     - no longer modify T & S inland when using down_slope pkg.
325    o gad_som : allow to switch to SOM advection for T & S without corresponding
326      pickup files (using new S/R: MDS_CHECK4FILE).
327    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
328      (for useSingleCpuIO to work in multi-threaded)
329    o pkg/shelfice:
330     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
331       with SHELFICEtopoFile in data.shelfice
332     - move code for reading ice shelf topography and modifying hFacC into separate
333       subroutines of the shelfice package
334     - separate initialisation of "fixed" and "variable" variables
335     - kTopC is not (yet) replaced by kSurfC, although this is possible
336    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
337    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
338      and rename:
339      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
340      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
341    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
342    
343    checkpoint61c
344    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
345      to add mass source/sink of fluid in the interior (3-D generalisation
346      of oceanic real-fresh water flux).
347    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
348    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
349    o new pkg: down_slope
350      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
351      - presently, modify T & S inland (dwnslp_calc_rho.F).
352        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
353      - implementation for ocean in P-coords not tested.
354      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
355    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
356      (to facilitate conversion of oceanic pkg to p-coordinate).
357    o change FIND_RHO to FIND_RHO_2D :
358      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
359    o new pkg: cheapaml
360    
361    checkpoint61b
362    o exch2:
363      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
364      - no longer depend on the order sequence (N,S,E,W).
365      - 3rd exchange no longer needed (tested with 24 tiles).
366      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
367      - exch_UV_A-grid readily available (but not yet tested).
368      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
369      (both are no longer needed) in exch_uv: no effect in forward run; but
370       get truncation error differences with adjoint exch.
371    o exch2:
372     - change index-bounds storage (moved from target to local tile,
373       more intuitive this way) ; rename/remove some variables.
374     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
375    
376    checkpoint61a
377    o exch2/matlab-topology-generator:
378      fix bug in index bounds for N-S internal exchange (hard to tell if this
379      had any effect on the solution).
380    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
381      is exceeded
382    o testreport: modify syntax of awk, so that it works also with
383      awk, and not only with nawk and gawk
384    
385    checkpoint61
386    o autodiff
387      Change default for TAF usage by removing argument '-nonew_arg'
388      This changes TAF subroutine argument list (ordering of active var.)
389      Omission of this flag leads to incompatibility w.r.t. TAMC
390      To restore TAMC-compatibility, need following modifs:
391      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
392      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
393      Tested TAF version is 1.9.22
394      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
395    
396    checkpoint60
397    --->>> This is the last checkpoint for which generating the adjoint
398    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
399    --->>> by default.
400    --->>> Future checkpoints will ommit this flag by default.
401    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
402    o pkg/grdchk: Add gradient check to etan0 perturbations.
403    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
404    o pkg/autodiff: more flexibility in zeroadj.
405      model/src: modifying do_oceanic_phys.F accordingly.
406    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
407    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
408      special setup of gmredi for which the adjoint is stable
409      enough for parameter optimization.
410    o bridging the gap between eddy stress and GM.
411      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
412          along with a change in CPP option (now ALLOW_EDDYPSI).
413      -> when using GM w/ GM_AdvForm:
414          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
415          is applied either in the tracer Eq. or in momentum Eq.
416          depending on data.gmredi (intro. GM_InMomAsStress).
417      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
418      The key modifications are in model/src/taueddy_external_forcing.F
419      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
420    
421    checkpoint59r
422    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
423      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
424      fix option to read coriolis(@ cell-corner) from files with CS-grid.
425    o pkg/mnc: add some attributes to standard 1D-coordinate variables
426    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
427      mass points, when using mnc for output
428      - add runtime parameter (missing_value, missing_value_int) to override
429        default (which is the value of getcon('UNDEF'))
430    o pkg/mnc: prepare mnc for the actual use of missing values with the
431      diagnostics package: small fix in mnc_cw_readwrite.template and more
432      initialisation of never used fields
433      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
434      versions
435    o pkg/thsice/thsice_ini_vars.F added default initial values so that
436      thermodynamics sea ice solver does not blow up when some initial fields
437      are missing.
438    o move from external_forcing_surf.F to ini_forcing.F
439      the p-coord. hack consisting in using pLoad to set phi0surf ;
440      update output of tutorial_global_oce_in_p (affected @ truncation level).
441    o Freshen up a bit hs94.1x64x5, notably:
442      remove rotationPeriod and tRef=5*0. (adjoint only), and add
443      exactConserv=.TRUE.
444    o pkg/generic_advdiff:
445      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
446      applies to files where Temperature & Salinity 2nd Order moments are used.
447    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
448      this uses a dynamically allocated internal state data structure
449      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
450      and requires a fortran 90 compiler
451    
452    checkpoint59q
453    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
454       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
455    o Refresh tutorial_global_oce_biogeo, notably:
456      - change bathymetry (put back seamounts in ACC, use hFacs)
457      - change EOS (POLY3 --> JMD95Z)
458      - use Bryan-Lewis vertical diffusivity
459      - use multidimensional advection
460      - remove old virtual virtual in dic pkg, now done through ptracer pkg
461      - change a couple of parameters in dic pkg
462    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
463    o pkg/obcs: change default to OBCSfixTopo = .true.,
464      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
465      - replace "debugMode" with "debugLevel .GE. debLevB"
466    o implementation of TAF directives for gchem,cfc,dic
467    o remove "exp5" (replaced by tutorial_deep_convection).
468    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
469      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
470      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
471      --> changes results in exp4, seaice_obcs
472    o tutorial_deep_convection :
473      update the set-up and increase resolution and domain size ; start
474      from pseudo initial conditions = output at t=120mn in order to see
475      something happening when running testreport.
476    o pkg/seaice: add os7mp as an advection scheme
477                  add check for advection schemes
478                  add a flag for restoring T and S underneath sea ice
479    o pkg/my82: add netcdf-support and diagnostics
480    o thsice pkg:
481      - Now hsMax limits snow height by turning it into ice following
482        flooding scheme (and now conserving energy)
483      - Slight rewriting of the formula in thsice_calc_thick.F
484      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
485      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
486    
487    checkpoint59p
488    o gchem / dic / cfc :
489      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
490      - add new parameter files: "data.dic" & "data.cfc" ;
491      - various re-arrangement in initialisation & header file ;
492      - fix tutorial_global_oce_biogeo for multi-threaded test.
493    o pkg/dic: test for "pickup_dic" file when restarting ;
494      if no pickup-file, can restart with a re-initialised pH (same as it did
495      before) providing pickupStrictlyMatch is set to False.
496    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
497      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
498    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
499      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
500    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
501     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
502       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
503    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
504       scheme to use for vorticty-term ;
505     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
506       (with default selectVortScheme, return to original discretisation)
507     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
508    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
509    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
510      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
511      also fix diagnostics VISCAHW & VISCA4W.
512    
513    checkpoint59o
514    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
515    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
516      move a few statemens out the main loop into separate loops
517    o pkg/shelfice:
518      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
519        (kg/m^2/s), does not break tests, because in verification/isomip,
520        rhoConstFresh=rhoConst (by accident)
521      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
522      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
523        new file model/src/seawater.F, so that they are available for all pkgs.
524      - convert potential temperature into in-situ temperature. This changes the
525        isomip tests => update tests
526    o add a flag writePickupAtEnd (default=true) to be able to suppress
527      writing a pickup at the last timestep
528    o tools/mpack-1.6 :
529      - disable automake (not working) and autoconf (not needed).
530      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
531        also cleaner with much less compilation warnings.
532    o pkg/profiles:
533      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
534      (for "less than 32 characters name" compiler requirement)
535    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
536      conditions that have a different sampling frequency than S/T/U/V obcs
537    o pkg/diagnostics (stats-diags):
538      - fix global Min/Max in case 1 processor get only empty tiles
539    o genmake2: replace (4 times)
540         make genmake_tc_1.o >> genmake_warnings 2>&1
541      with
542         COMM="$CC $CFLAGS -c genmake_tc_1.c"
543         echo $COMM >> genmake_warnings
544         $COMM >> genmake_warnings 2>&1
545      to make genmake2 always see the value of CC as specified in the optfile.
546    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
547      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
548      - modify verification advect_cs test to test SOM-advection on CS-grid.
549    o pkg/ctrl:
550      - Rewrite of ctrl_map_ini_ecco.F,
551        introducing a generic routine (ctrl_map_ini_gen.F).
552      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
553    
554    checkpoint59n
555    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
556      number in dedicate array "hdiag":
557      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
558        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
559      - many small changes (integer format) for large number of diagnostics
560      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
561        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
562    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
563      usingSphericalGrid, this allows to define the rotated grid coordinates
564      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
565      geographical coordinates according to the inverse of the rotation defined
566      by the Euler angles, so that Coriolis parameter and online-interpolation by
567      exf works with the geographical coordinates on XC/YC/XG/YG.
568      Naturally, this feature does not work with all packages, so some
569      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
570      profiles), because there the coordinates are assumed to be regular
571      spherical grid coordinates.
572    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
573      - introduce isopycnal diffusion coefficient control.
574    o tools/adjoint_options:
575      - additional control vector components.
576    o pkg/mnc: have mnc create marginally meaning full coordinate variables
577      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
578    o pkg/mypackage:
579      - add example of read/write pickup for state-var ;
580      - add entry points to the main code for state-vars diags & write-pickup.
581    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
582      transitions for useExfYearlyFields
583      - add new subroutine that determines the file to read from for
584        use*YearlyFields = .TRUE. and .FALSE.
585      - add a verification experiment to global_with_exf that tests
586        useExfYearlyFields with USE_EXF_INTERPOLATION defined
587    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
588      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
589      subroutines (which could be generated from a template, because they are
590      almost identical), for now they are included in obcs_prescribe_read.F for
591      simplicity
592    o pkg/exf:
593      - add a little more diagnostic to exf_interp_read (in analogy to
594        mds_read_field, can be turned off with debugLevel < debugLevA=1)
595      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
596        ugly but fast by unrolling short inner loops, inserting a unroll=8
597        directive in routine lagran, and splitting a loop and making do while the
598        outermost loop (the latter requires the intoduction of index arrays)
599    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
600    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
601      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
602    o verification/seaice_obcs: updated for restart test and latest options
603    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
604      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
605      for now this is only available for the C-grid code and also within
606      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
607    
608    checkpoint59m
609    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
610      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
611    o gad_som : fix flux output (& diagnostics) to have same units as other  
612      advection scheme fluxes (was previously multiplied by deltaT).  
613    o added verification/seaice_obcs both to test seaice open boundaries
614      and to provide an example matlab scrpt for generating them
615    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
616    o pkg/salt_plume: clean up salt_plume_frac.F to
617      remove redundancy in PlumeMethod 1 and 4
618    o pkg/kpp: added saltplume diagnostics
619    o pkg/obcs and pkg/seaice:
620      - do not set uice and vice to zero when OB*icefile are unspecified
621      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
622      - moved seaice tracer obcs after call to seaice_growth
623    o pkg/salt_plume: added various options for salt plume depth
624      criterion and for vertical distribution of the salt
625    
626    checkpoint59l
627    o pkg/ptracers: new version of ptracers pickup:
628      read meta file and write only fields which are needed to restart.
629      ( same logic as main pickup file ; also using pickupStrictlyMatch )
630    o pkg/seaice:
631      - add timescale for melting due to warm mixed layer as a means of
632        setting SEAICE_availHeatFrac more conveniently
633      - add a CPP-flag/runtime parameter check for flooding algorithm
634      - reformulated availHeat in seaice_growth.F to be independent of AREA
635    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
636      unit changes
637    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
638    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
639      SX vector computer.
640    o pkg/seaice:
641      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
642        seaice forcing fields can now be read only through pkg/exf
643      - removed some unused halos
644    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
645    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
646      or U/VICE from U/VWIND before computing U/VSTRESS
647    
648    checkpoint59k
649    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
650      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
651    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
652      all experiments pass when compile with un-initialised var. checking option.
653    o added pkg/salt_plume
654    o script to test restart (for now, in MITgcm_contrib/jmc_script)
655    o pkg/seaice: new read/write pickup version.
656      read meta file and write only fields which are needed to restart.
657      ( same logic as main pickup file ; also using pickupStrictlyMatch )
658    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
659    o lab_sea.hb87: modify the domain & update output.hb87.txt :
660      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
661      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
662      process. Fixed here by closing the domain at the Northern boundary.
663    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
664    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
665      a set of consecutive levels in/from a 3-D array.
666    o pkg/ptracers:
667      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
668      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
669    
670    checkpoint59j
671    o in pkgs: dic, obcs, offline, rbcs:
672      standard way to compute coeff. for time interpolation between 2 time reccords
673      which retains full precision (& make results less dependent on compiler).
674      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
675    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
676      packages instead of reading ice cover and wind speed separately
677    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
678     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
679      to allow to compile customized code before the update)
680    o cleaning-up:
681      - fix CPP instruction syntax in pkg/obcs
682      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
683        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
684      - fix some threads issue in IO parts.
685    o pkg/dic:
686      - add tons of "_d 0" (--> much better testreports !)
687       and then update outputs of tutorial_global_oce_biogeo
688    o pkg/mom_fluxform:
689      add a special version of momentum advection intended to conserve momentum
690      next to a bathymetry step or a coastline edge. (default = off = #undef)
691    o new read/write pickup version:
692      - for now, only implemented for main (mdsio) pickup file.
693      - write out only what is needed to restart; merge pickup_nh , pickup_ph
694        and main pickup together.
695      - read meta file; read only what is needed to restart; stop if a field
696        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
697        if it make sense (even if the restart is not perfect).
698      - if no meta file, assume that pickup to read corresponds exactly to
699        a pickup that would currently be written.
700      - read pickup written in the old format (until checkpoint59i) if it
701        recognizes an old meta file (no field-list).
702      - add a meta file in exp. which starts from a pickup: 2 cases:
703        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
704         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
705        b) a meta file describing the content of the associated pickup file
706         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
707    o pkg/mdsio & pkg/rw:
708      - new routine to read a meta file ; new set of routine to read
709        Multiple-fields file (with meta file).
710    o added open boundary conditions capability for seaice
711        HSNOW, HSALT, UICE, and VICE
712    
713    checkpoint59i
714    o adjoint:
715      * fix multiDimAdvection adjoint
716        (partial recomputation problem by TAF for fVerT(:,:,kDown)
717        and comlev1 size definition (maxpass vs. max. number of tracers)
718      * verification/global_ocean.90x45x15 adjoint now tests
719        NLFS and multiDimAdvection using DST3 (=30)
720      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
721    o pkg/kpp: add "_d 0" to real constant (if missing);
722      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
723      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
724    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
725      for internal parameters related to restart process (formerly from PARAMS.h)
726      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
727    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
728      as argument. (only atm2d & obcs write_pickup have not yet been updated)
729    o pkg/monitor:
730      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
731      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
732      - account for deep Atmosphere factor and density factor (anelastic)
733    o added open boundary conditions capability for seaice HEFF and AREA
734    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
735      thermodynamics
736      - requires a little reorganization, which affects the testreport results
737        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
738        so that now the conservative form is tested
739      - add a few comments
740    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
741    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
742    o add new diagnostics to seaice: advective, diffusive fluxes (only for
743      multidim-advection, for scheme 2 they are not filled) and transports,
744      thermodynamic growth rates
745    o change units of EmPmR (inside the code, + within coupling interface)
746      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
747      Affects results @ truncation level (cg2d match) and update output of
748       experiments: lab_sea(6), global_ocean.90x40x15(10),
749      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
750      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
751      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
752      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
753    
754    checkpoint59h
755    o pkg/exf:
756      - improve vectorization by moving if-statement out of loops in
757        exf_mapfields, exf_radiation
758      - exf_bulkformulae.F: introduce 2D fields and vectorize code
759    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
760    o testreport:
761      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
762        monitor & update offline_exf_seaice exp. output.
763      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
764    o pkg/seaice:
765      - bug fix in the evp solver: boundary conditions were affected be
766        masking of zMax/zMin (changes results)
767      - minor bug fix in boundary conditions in seaice_calc_strainrates
768        (changes results for no_slip)
769      - seaice_lsr.F: make interpolation of eta dependent on boundaries
770      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
771      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
772        stress formulation and no-slip boundary conditions
773    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
774      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
775    o pkg/seaice: a first HSALT time stepping equation has been checked in
776    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
777      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
778      without requiring DO-IF statements
779    o pkg/thsice:
780      use continuous power-law function for partition of energy between lateral
781      melting/freezing and thinning/thickening ; old code using step function
782      still available with #undef THSICE_FRACEN_POWERLAW
783      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
784    o testreport: change AD testing : check against results/output_adm.txt
785      using same scripts as for forward test.
786    
787    checkpoint59g
788    o adjoint testing: in preparation for changing testreport:
789      - output format: cost and grad written on separated lines
790      - ad output results in directory "results" (instead of "results_ad")
791    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
792    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
793    o pkg/ecco: allow user defined cost function contributions
794    o testreport:
795      Allow to choose (per experiment) the list of tested output variables
796       and the main variable (used to issue a pass/FAIL ) ;
797      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
798      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
799      Also modify printing of summary:
800       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
801       b) echo the list of tested variables in the individual summary.txt of
802          each experiment.
803    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
804      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
805      (but still depend on the tile decompostion of the domain).
806    o pkg/seaice: change a discretization detail to make the B-grid code
807      "more symmetric". This change is likely to remove all "ridges/leads" that
808      where quasi-aligned with the grid in B-grid solutions. It may also be
809      the solution to the stress coupling issues with the B-grid.
810    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
811      remove .cvsignore from input dir. (since testreport no longer run here).
812    o pkg/thsice:
813     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
814     - fix reshaping of sea-ice just after advection:
815       melt all the ice only if ice-volume is too small.
816     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
817       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
818     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
819    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
820      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
821    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
822      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
823      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
824      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
825      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
826      -> update output.txt
827    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
828     this affects truncation error: -> update output.txt of exp:
829      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
830      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
831    
832    checkpoint59f
833    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
834    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
835      a bounded range (in forward mode)
836    o pkg/ecco, ctrl, autodiff and mom_common:
837     internal parameter controls, completements of implementations
838    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
839    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
840      (not seem any difference in testing results).
841    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
842       at face corners.
843    o pkg/generic_advdiff:
844     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
845      loop range indices for computing vertical advection tendency
846      and do the calculation in the interior only (no overlap) ;
847      for now, only implemented for SOM advection (to save CPU time).
848     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
849    o exch2 adjoint
850      First set of changes:
851      - add exch2 hand-written adjoint templates
852      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
853        This will require cleanup in pkg/autodiff/*.F
854        (changed routines currently kept separate in verif. code/)
855      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
856        that used to hide exch2 or cubed-sphere specific code
857        (commented via 'cph-exch2')
858    o pkg/seaice
859      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
860    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
861       output of global_ocean.cs32x15.thsice .
862    
863    checkpoint59e
864    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
865      for B-grid vector (not yet tested) and C-grid vector (<- only used
866      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
867    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
868      (#ifdef ALLOW_SALT_PLUME)
869    o gather_2d/scatter_2d: removed halo regions
870    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
871      scheme and the corresponding test case (under front_relax dir). For now,
872      only available with Skew-flux form and not yet tested in realistic set-up.
873      adjoint: store directives updated, but gradient checks deteriorated,
874      so maybe GM/Redi adjoint is now broken.
875    o seaice adjoint
876      * add AREA, HEFF, HSNOW as control variable
877        (should not change lab_sea results)
878      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
879    o pkg/seaice:
880      * added computation of saltFlux in seaice_growth;
881        For time being, sea ice salinity is assumed constant
882        contribution of snow flooding to freshening of sea ice is neglected.
883        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
884        defaults to 0.0 in order to maintain backward compatibility.
885        Typical values for SEAICE_salinity are 4 to 10 g/kg.
886      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
887      * added SEAICE_availHeatFrac, which specifies fraction of surface level
888        heat content used to melt or grow ice
889      * commented out cap of HICE: it helps keep ice thinner
890      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
891      * applied OBCS T/S mask to HEFFM sea ice mask
892    
893    checkpoint59d
894    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
895     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
896     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
897    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
898     and change default value of parameter "GM_Small_Number";
899     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
900       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
901       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
902    o pkg/ecco: cost function when applying pkg/smooth to controls
903    o pkg/ctrl: add forcingPrecond run time parameter
904    o pkg/seaice:
905     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
906     - fix bug in metric terms of u-equation in LSR solver (implicit part),
907       changes verification/lab_sea
908     - rearrange implicit part of u-equation in LSR solver to make it easier to
909       read, understand, and debug. This causes changes at the truncation level.
910     - fix (serious) bug in the boundary conditions (sign error in the implicit
911       part) of the LSR solver. Changes all LSR results.
912     - fixed problem with HSNOW initialization to avoid thick snow when AREA
913       is initilized with small values - does not change lab_sea results.
914     - added HsnowFile initialization capability
915    o pkg/smooth: addition to model/src and pkg/ctrl so allow
916     initialization of pkg/smooth and application to control vector
917    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
918    o dependencies: pkg/profiles requires pkg/cal
919    o pkg/profiles:
920     - added option ALLOW_PROFILES_GENERICGRID
921         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
922         that interpolation information (grid points and coefficients) is provided
923         within the netcdf input files.
924         -> sample matlab scripts can be found in MITgcm_contrib/gael
925         that allow you to prepare netcdf input files.
926     - also modified: cleaner include statements, cleaner error print statements,
927       cleaner stops when error, and more tests of the netcdf input files consistency.
928    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
929    o pkg/seaice:
930     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
931       requires a new routine: seaice_diagnostics_fill.F
932     - make sure that seaice does not move if not forced (pressure replacement
933       method, Hibler and Ip, 1995), changes results
934     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
935     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
936       It is turned off by default (=-1.), because it changes the results.
937     - make it possible to read AREA from a file, too.
938    
939    checkpoint59c
940    o add S/R and diagnostics for oceanic mixed-layer depth
941    o move GMRedi call after all vertical mixing schemes (including KPP)
942    o pkg/thsice:
943     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
944      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
945    o pkg/obcs:
946     - bug fix for balance code
947    o pkg/seaice:
948      - allow values of SEAICE_elasticParm > 1
949      - add new parameter SEAICE_evpTauRelax as an alternative
950        to SEAICE_elasticParm
951      - make lsr boundary conditions free slip (by default), changes result
952      - add code for no slip boundary conditions for lsr
953      - set minimum of zeta to zero (and not 4e8) (changes results)
954      - add a cap on AREA after advecting AREA if seaice_growth is not called
955    o change calculation of Visbeck K:
956      - no longer depend on tapering scheme; instead, compute slope (limited
957        by GM_maxSlope). this is equivalent to what was comuted before with
958        clipping or linear tappering.
959      - fix vertical averaging (wrong by 1/2 level)
960      - leave the old version (but will not be maintained) within
961        #ifdef OLD_VISBECK_CALC / #endif
962      - update output of exp. ideal_2D_oce
963    o change error catch in calc_r_star to improve vectorization
964    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
965      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
966    o adjoint:
967      Re-organized adjoint checkpointing according to Matt Mazloff
968      (but with modifs/completions/cleanups)
969      Storing is now bundled into large arrays to optimized I/O
970      (and second step in cleanup of the_main_loop)
971    
972    checkpoint59b
973    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
974      - export/import (between ocean & coupler) fields needed for ocean DIC.
975    o pkg/seaice:
976      - get rid of three more exchanges seaice_calc_viscosities (required
977        different loop boundaries in seaice_lsr and seaice_ocean_stress)
978      - bug fix in seaice_ocean_stress (update of lab_sea required)
979      - reduce loop boundaries to necessary minimum also in seaice_evp
980      - go back to the old way of computing deltaC/Z as the adjoint likes that
981        better
982    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
983      passive tracer to an Age Tracer) + update output.txt
984    o pkg/exf:
985      - implement A-grid / C-grid selection for wind-stress input files.
986      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
987      for now, in exf_bulk_largeyeager04.F only :
988      - change implementation for case where windspeed + 2. components wind-stress
989        are read-in. AND use rhoConstFresh to convert evap.
990    o pkg/seaice:
991      - use correct EXCH_UV for wind-forcing (on A-grid).
992      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
993        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
994    o pkg/exf:
995      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
996      EXF_INTERPOLATION:
997      - merge global_with_exf/code version of exf_interp_read.F
998        to the main code ;
999      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1000        reading the file ; Important: This options needs to be defined to recover
1001        previous code.
1002        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1003      - no longer loose real*8 precision along the way when using exf_iprec=64.
1004    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1005      - change discretisation of evp-solver in order to avoid another exchange
1006        (changes lab_sea) and clean up a little
1007      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1008        help the adjoint (this also changes the results slightly)
1009      - add a few "_d 0" where they had been missing in seaice_evp.F
1010      - cleaning up: remove unused seaice_calc_rhs.F
1011    o pkg/exf: some cleaning-up:
1012      - change various "constants" into runtime parameters
1013      - cleaned-up Large&Yeager04 routine which should eventually
1014        replace exf_bulkformulae.F (changed names of S/R and CPP)
1015        and merged various ALLOW_ATM_WIND options
1016     only used with thsice pkg (in thsice_get_exf.F):
1017      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1018        which are used when useStabilityFct_overIce=TRUE (= the default)
1019      - change default values of ice & snow emissivity and scale downward LW
1020        by ice & snow emissivity.
1021    o pkg/thsice:
1022     fix few little problems, in thsice_calc_thickn.F:
1023      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1024      - melt only laterally if hIce < hThinIce (as the comments say)
1025      and in thsice_extend.F:
1026      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1027      - start to form ice as soon as the minimum ice-volume is reachable.
1028     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1029      and cpl_aim+ocn
1030    o pkg/kpp
1031     - move computation of surface related input fields to KPP into a new
1032       subroutine kpp_forcing_surf.F
1033     - remove wrong (within bi,bj loops) EXCH calls.
1034     - little cleaning (add argument myThid in last position, cvs header ...)
1035     - for now, fix conservation problem by exchanging KPPviscAz (may not
1036       be the best fix)
1037    o pkg/seaice
1038     - check for inconsistent evp parameter/cpp-flag combination
1039     - remove leftover errIO flat for obsolete name list error handling
1040    o OpenAD
1041     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1042    
1043    checkpoint59a
1044    o pkg/seaice: some parameter clarifications and a little bit of clean up
1045    o pkg/thsice: rename run-time parameters:
1046       himin       -> hIceMin
1047       himin0      -> hThinIce
1048       hihig       -> hThickIce
1049       i0          -> i0swFrac
1050       transCoef   -> bMeltCoef
1051       frac_energy -> fracMelting
1052      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1053       with default values (for now) that do not change the results.
1054      remove old version of thsice vars advection in pkg/seaice.
1055    o in FFIELDS.h:
1056      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1057      - make pLoad & sIceLoad always available (but still only used if
1058         ATMOSPHERIC_LOADING is #define).
1059    o pkg/kpp: replaced _KPP_RL with _RL
1060    o bug fixes for vertical diffusivity computations when both KPP and
1061        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1062        are no longer updating the vertical diffusivity array
1063        (passed as argument) but are (re-) setting those arrays.
1064    o pkg/seaice: fix bug in evp solver, while doing that
1065      - change (improve?) discretization of stress computations for both
1066        cgrid-lsr and evp solver
1067      - add a new routine to compute strain rates
1068      - the above changes lab_sea results
1069      - add no slip conditions for evp solver (off by default), lsr-version
1070        may follow
1071      - fix exchange for shear at Z-points (does not change lab_sea)
1072      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1073        (to force the user to pick a time step since there is not "safe" way
1074        of choosing it)
1075      - add principal stress diagnostics
1076      - rearrange fields for evp a little to avoid having to call a: too many
1077        exchanges and b: exchanges for stress trensor components which we do
1078        not have.
1079      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1080        of evp, complete rewrite for lsr case (latter is does not yet work
1081        in all cases)
1082    o pkg/kpp: add code to have mixing in shelf ice caverns
1083      - add myThid to all kpp routines (long overdue)
1084    
1085    checkpoint59
1086    o pkg/exf:
1087      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1088        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1089      - move exf header files from lower_case.h to UPPER_CASE.h ;
1090        add missing cvs Header & Name
1091      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1092      - add namelist param. selectStressGridPosition, exf_monFreq
1093      - retire many _CLIM routines, and remove data.exf_clim
1094        + params moved to data.exf
1095        + climsst, climsss now handled by exf_set_gen, i.e.
1096          climss?period=0 refers to constant field,
1097          climss?period=-12 to monthly forcing
1098      - split up namelists in data.exf
1099    o pkg/seaice:
1100      - remove seaice_exch and seaice_exch_uv
1101      - remove superfluous exchange of theta
1102      - add myThid to seaice_budget_ocean/ice
1103      - add new interface for atmospheric wind forcing (C-grid only)
1104        + new routine
1105        + two new field (taux, tauy for stress over ice)
1106        + removed one global field (DAIRN) for C-grid case only
1107    o pkg/thsise
1108      - 2nd set of modifs for thsice adjoint in conjunction with exf
1109    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1110    
1111    checkpoint58y_post
1112    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1113      vertical diffusivity, similar to that in MOM4; turned on using
1114      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1115      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1116    o Added capability for 3D specification of background vertical diffusion
1117      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1118      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1119      "data" file that contains the 3D vertical diffusivity coefficients.
1120    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1121      - add code within pkg thsice to advect & diffuse sea-ice fields
1122      similar to (and will replace) what has been added in  seaice_advdiff.F,
1123      but: - conserving Mass, Heat & Salt.
1124           - better when using non-linear advection scheme (not yet fully tested)
1125           - can also be used in atmospheric set-up (for now, only the diffusion).
1126    
1127    checkpoint58x_post
1128    o IO option for global-file compact format:
1129      - add options when generating topology (utils/exch2/matlab-topology-generator)
1130      - add I/O capability (pkg/mdsio).
1131      - adapt utils/matlab/rdmds.m to read this format.
1132      for now long-line format not yet supported by pkg/mdsio (& exch2).
1133    o shelfice: add a few diagnostics
1134    
1135    checkpoint58w_post
1136    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1137      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1138      (and replace horiVertRatio in NH code).
1139      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1140                         and tutorial_plume_on_slope (sensitive to truncation)
1141    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1142      directly to drive seaice model (C-grid only)
1143    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1144     - reintroduce computation of wind from stress,
1145     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1146       mass points to avoid tau = 0
1147     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1148    o rdmnc.m: make it work with "global" files created with gluemnc
1149    o rdmnc.m : some improvements in dealing with singleton dimension
1150      (tested on all testreport mnc output files).
1151    o genmake2: disable pkg/profiles if netcdf test fails.
1152    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1153    o move call to cal_readparms up to make calendar parameters/variable available
1154      to all packages
1155    
1156    checkpoint58v_post
1157    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1158      useDynP_inEos_Zc tested.
1159    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1160    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1161      and portions thereof.  See read_cs.txt for description and examples.
1162    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1163      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1164      following the great-circle arc between those 2 points.
1165    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1166      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1167    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1168     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1169     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1170     - still needs work (not working with some options ; efficiency to improve)
1171       and serious testing.
1172     - use this scheme for temperature & salinity in 2 advection test exp.:
1173       advect_xy & advect_xz, respectively.
1174    
1175    checkpoint58u_post
1176    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1177    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1178    o testreport: add option "-skipdir" to skip some test.
1179    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1180      momentum calculation.
1181    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1182    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1183      remove checkpoint.F and the_correction_step.F (no longer used);
1184      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1185    o add option (linFSConserveTr) to correct for tracer source/sink due to
1186      Linear Free surface
1187    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1188    o pkg/thsice: fix reading mnc-pickups
1189    
1190    checkpoint58t_post
1191    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1192    o pkg/mdsio:
1193     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1194       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1195       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1196     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1197     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1198       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1199     - new S/R (to replace MDSWRITEMETA), which allows to write more
1200       informations (variable names, time ...) to meta files.
1201     - modify rdmds.m to give back the meta file content.
1202    o pkg/diagnostics: change vertical interpolation to be safer, and more
1203       flexible (define p-levels to interpolate to in data.diagnostics);
1204      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1205       diagnostic pointer.
1206    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1207    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1208    o fix multi-category seaice:
1209     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1210       SEAICE_MULTICATEGORY
1211     - fix short wave heat flux
1212    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1213       and allow to use EVP solver. Change forward lab_sea: test both EVP
1214       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1215    o Initial check-in of lab_sea adjoint
1216      (very similar to natl_box_adjoint/code_seaice)
1217      * used C-grid and EVP solver
1218      * used KPP, GM/Redi
1219      * uses inAdExact=.TRUE.
1220      * gradient checks fail for both ADM and TLM
1221        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1222        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1223        issue is related to forward mismatch between g77 an ifort
1224    o pkg/seaice: overhaul of thermodynamics
1225     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1226     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1227     - move a few global fields out of SEAICE.h into seaice_growth.F and
1228       make them 2D (FICE/QNETO/ ...)
1229     - remove FO (it is the same as QNETO)
1230     - introduce a few local fields to avoid modifying external fields such
1231       as atemp, etc.
1232    
1233    checkpoint58s_post
1234    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1235      changed exf_set_gen.F so that
1236        genperiod=0 means input file is one time-constant field and
1237        genperiod=-12 means input file contains 12 monthly means
1238    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1239      this affects truncation error ; generate new output file for exp. which
1240      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1241        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1242        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1243        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1244        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1245        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1246    o start implementation of deep-atmosphere and anelastic formulation
1247    o verification: remove 2nd copy of input files and use script "prepare_run"
1248      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1249    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1250    o profiles: fix for multithreaded case
1251    
1252    o diagnostics: rename few diags:
1253      s/'PRESSURE'/'RCENTER '/g
1254      s/'TICE    '/'oceFreez'/g
1255      s/'TAUX    '/'oceTAUX '/g
1256      s/'TAUY    '/'oceTAUY '/g
1257      s/'SWFLUX  '/'oceQsw  '/g
1258      s/DIFx/DFxE/g
1259      s/DIFy/DFyE/g
1260      and add few ocean-forcing diagnostics:
1261      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1262    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1263      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1264      as actual snow thickness.  It now refers everywhere to effective snow
1265      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1266    
1267    checkpoint58r_post
1268    o modifications to pkg/seaice/growth.F, which change results of
1269      lab_sea experiment: fixes pertain to melting snow over open water, to
1270      masking EVAP under sea ice, and to using the correct AREA variable for
1271      computations of EVAP, PRECIP, HSNOW, and GHEFF
1272    o add ability to read bathy, salt, and theta using MNC (off by def)
1273    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1274      both are turned off by default and do no change any results
1275    o seaice advection with pkg/thsice: a step toward the use of non-linear
1276      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1277    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1278      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1279      in natl_box (affects results @ truncation level: update output.txt)
1280    o multi-threading and IO:
1281      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1282      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1283        (needed to work with SingleCpuIO): tested in all verif. exp.
1284    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1285      affects the results (but none of the verification test uses this scheme).
1286    o Adding some pkg/diagnostics capability to pkg/seaice
1287      (will certainly be subject to changes)
1288    o ctrl: adding new control variables:
1289      lwflux, lwdown, evap, snowprecip, apressure, runoff
1290    
1291    checkpoint58q_post
1292    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1293      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1294      high_res_cube configuration by 4% on Columbia.
1295    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1296      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1297      dynamical allocation (seems to work in multi-threaded).
1298    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1299      single CPU io) so that TAF does not have to see EESUPPORT.h
1300    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1301    
1302    checkpoint58p_post
1303    o obcs: stop if obcs is used with useCDscheme = .true.
1304    o shelfice:
1305     - fix a sign error so that no slip at shelfice interface works
1306     - remove stop for combination non-hydrostatic code and shelfice. That does
1307       not mean, that the results are correct, but at least they are numerically
1308       stable
1309    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1310    o added adjoint exch routined for all exch*3d* routines
1311      and updated flow directives
1312    
1313    checkpoint58o_post
1314    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1315      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1316    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1317      and clean-up reading/writing of pickup files.
1318    o fix local version of read/write pickup (NH part) in rotating_tank/code
1319    o simplify EXCH interface:
1320     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1321     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1322    o added the regrid package
1323    o shelfice:
1324     - add a simple boundary layer scheme to reduce noise
1325     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1326    
1327    checkpoint58n_post
1328    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1329       local variable (not in common block).
1330    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1331      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1332      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1333        to work with SingleCpuIO.
1334    o add "_d 0" to real constant of pkg/cfc subroutines ;
1335       update exp. cfc_exemple & tutorial_cfc_offline output files.
1336    o multi-threading and IO:
1337      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1338        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1339      - barrier before and after reading.
1340      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1341      - avoid using MDS_WRITELOCAL for LAND pkg output.
1342      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1343        common-block variables ; Allows multi-threading with master-thread IO.
1344    o change default MAX_NO_THREADS from 32 to 4 ;
1345      and stop cleanly when MAX_NO_THREADS is too small.
1346    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1347    
1348    checkpoint58m_post
1349    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1350       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1351    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1352       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1353       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1354    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1355        add MITgcm_tutorials (= code + all the tutorials)
1356    o ecco, option to compute cost for total ssh (mean+anom)
1357    o consistent with addition of ptracer and ssh in pkg/profiles
1358    o profiles: adding ptracer and ssh
1359    o testreport: change multi-test output-file name
1360      (from output.txt.{name} to output.{name}.txt)
1361    o profiles: now ok for mutli-tiles case
1362    o seaice: add 4 parameters for different advection schemes for area,
1363      (effective) seaice thickness, enthalphy, and snow height. Their default
1364      is the standard parameter SEAICEadvScheme
1365    o calc_gw:
1366     - add cosFacU in zonal viscous flux (harmonic.visc.).
1367     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1368       of tutorial_plume_on_slope.
1369    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1370    o calc_gw: true flux-form, account for horizontal grid spacing.
1371      update rotating_tank results, but not plume_on_slope (affected at
1372      truncation level, 11 digits).
1373    
1374    checkpoint58l_post
1375    o calc_gw:
1376     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1377     - remove side-drag for now (need to fix it); update plume_on_slope results.
1378     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1379    o commit code to make SST/SSS weights spatially variable
1380      (based on either variable in-situ or variable initial T/S weights)
1381    o pkg/ecco:
1382      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1383        now based on horizontally varying weights wthetaLev, wsaltLev
1384      * cost_averagesflags now returns year indices in addition to day, month
1385      * sflux balance is performed on annual basis
1386        (sflxumm, sfluxmm2, bal_sfluxmm)
1387      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1388        including separate counting and multipliers
1389    o pkg/rbcs
1390      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1391    
1392    checkpoint58k_post
1393    o testreport:
1394     - always build in dir. "build" (if not there, mkdir build instead of building
1395       & running in input)
1396     - run in dir run (if it exists), in build otherwise.
1397     - call prepare_run (if input/prepare_run exists)
1398     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1399    o pkg/exf modifications to interpolation and rotation routines for more
1400       reasonable treatment of North Pole singularity: for tracers North Pole
1401       value is set to northernmost zonal-mean value, for zonal velocity it is
1402       set to zero, and for meridional velocity it is set to northernmost value.
1403    o pkg/exf/exf_check_range.F
1404     - add tile index to diagnostics and move stop statement to the very
1405       end of the routine.
1406    o pkg/diagnostics: (diagnostics_main_init.F)
1407      define title of isomorphic variables according to the current config.
1408    o pkg/thsice with pkg/seaice dynamics:
1409    - fix domain of computation (interior only, required for exf) and do exchanges
1410    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1411    o towards a standard way of dealing with multi-threading in MONITOR
1412      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1413    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1414       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1415    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1416    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1417    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1418       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1419    o tracer advection:
1420     - clean-up and simplify calc_common_factors.F
1421     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1422       advection subroutine (but still not used within DST advection S/R)
1423    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1424    
1425    checkpoint58j_post
1426    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1427      from file (collects calls previously in FORWARD_STEP)
1428    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1429    o adjoint store dir. adjusted accordingly
1430    o genmake2
1431      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1432    
1433    checkpoint58i_post
1434    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1435      on wind stress (SEAICEstressFactor defaults to 1.)
1436    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1437      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1438    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1439      on CS-grid: no longer loosing mass.
1440    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1441    o pkg/ggl90: fix sloppy output and fix a bug
1442    o pkg/seaice: added SEAICEuseEVPpickup parameter
1443      - Set to false in order to start EVP solver with
1444        non-EVP pickup files when using SEAICEuseEVP
1445      - fix sign error in diffusion in seaice_calc_rhs
1446    
1447    checkpoint58h_post
1448    * Modifications for bottom topography control
1449      o replace hFacC by _hFacC at various places
1450      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1451      o add non-self-adjoint cg2d_nsa
1452      o update autodiff support routines
1453      o re-initialise hfac after ctrl_depth_ini
1454      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1455    * Adding verification for 5x5 box (4-layer) bottom topography control
1456    
1457    checkpoint58g_post
1458    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1459       used for mean seasonal cycle, mean diurnal cycle); add an example
1460       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1461    o pkg/ggl90:
1462      - add parameter (minimum surface kinetic energy)
1463      - fix bug (avoiding division by zero)
1464    o couple pkg/thsice to pkg/seaice:
1465      - modify advection in seaice to accomodate new scalar fields to be advected
1466      - only muliDimAdection scheme work with seaice/thsice
1467      - mapping of thsice-variables to seaice-variables, back and forth
1468      - does not break the verification experiments, but does not give the
1469        desired results either
1470    o pkg/seaice
1471      - make (default) second order advection a bit less confusing?
1472    
1473    checkpoint58f_post
1474    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1475      to pkg/seaice):
1476      - new routines thsice_map_exf and thsice_get_exf provide the interface
1477      - add an additional formal parameter to thsice_solve4temp
1478    o pkg/exf:
1479      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1480      - correct Stefan-Boltzmann constant
1481      - new parameter for longwave surface emittance
1482      - separate some stuff from exf_bulkformulae into new routines  
1483        exf_radiation, exf_wind
1484      - add new parameters and constants: longwave emissivity for ocean, ice
1485        and snow, evaporation parameters over ice
1486      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1487        either wind from stress or stress from wind
1488    o pkg/thSIce:
1489    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1490    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1491       and THSICE_CALC_THICKN
1492    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1493    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1494      to make debugging easier.
1495    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1496    o pkg/bulk_force:
1497      - clean-up comments and parameters ;
1498      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1499    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1500      generate new output for test-experiment: aim.5l_cs.thSI
1501    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1502      testreport accordingly
1503    
1504    checkpoint58e_post
1505    o SEAICE_CGRID adjoint done
1506    o R_STAR adjoint implemented.
1507      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1508      * need to sort out init. of h0facc, etc.
1509    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1510      to be able to use it in pure forward.
1511    
1512    checkpoint58d_post
1513    o upgrade simple test-experiment to tutorial example:
1514     step.1: duplicate the experiment and (step.2) will remove the old copy.
1515      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1516      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1517      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1518      tutorial_global_oce_biogeo    <- copy of dic_example
1519      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1520      tutorial_plume_on_slope       <- copy of plume_on_slope
1521      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1522      tutorial_global_oce_optim     <- empty for now (David ?)
1523      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1524     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1525    o correct a sign problem in cost_scat.F
1526    o obcs and ptracers: fix boundary conditions for advections schemes
1527      with larger stencil
1528    o thsice adjoint: start
1529    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1530      completeness
1531    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1532      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1533    o ptracers adjoint:
1534      * avoid extensive recomputatations
1535      * fix missing re-init. of gptr (missed by TAF)
1536    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1537      me to turn off the excessive output to STDOUT that this package produces
1538    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1539      and add those terms in Vector-Invariant formulation.
1540    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1541      if the control period (xx_hfluxperiod etc) is 0
1542    o in profiles pkg, clean routines and fix details
1543    o in ecco pkg, reading ssh data:
1544      fix problem in case the model does not start at iter0=0
1545    o fix mnc-pickup/restart for ptracers
1546    o new package prifiles:
1547      code to compute profile-based cost by Gael Forget
1548      (modifs in ecco, ctrl, autodiff)
1549    o Benign bug fix in initialization (spotted by M. Mazloff) of
1550      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1551    
1552    checkpoint58c_post
1553    o adjoint: finish NLFS adjoint and provide reference output in
1554      verification/global_ocean.90x40x15/results_ad_nlfs
1555    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1556      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1557      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1558      with SEAICE_CGRID defined.
1559    o move calendarDumps from "data" to "data.cal" and clean-up the code
1560      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1561    o add useEXF & useCAL flags (for now, set in hard-coded way)
1562    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1563      (were missing in NH mode, and wrong in quasihydrostatic mode).
1564      waiting for Chris updated version of calc_gw to add those CALLs.
1565    o fix bug in quasihydrostatic S/R ;
1566      add a test for this option: global_ocean.90x40x15.qshyd
1567    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1568      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1569    o add on/off flag useOffLine for package OFFLINE
1570    o seaice:
1571      - modify advection so that it works also on the C-grid
1572      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1573        problem in multi-tile runs with C-grid
1574      - add flags for clipping ice velocities and/or masking solver forcing
1575      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1576        C-grid solver
1577      - added a few comments to seaice_diffusion.F
1578      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1579        are now exclusive)
1580      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1581        required re-ordering the code a little:
1582       + make DAIRN global variable (defined in SEAICE)
1583       + move computation of the viscosities eta and zeta into a new separate
1584         routine (because I need to recompute them in seaice_ocean_stress.F)
1585    
1586    checkpoint58b_post
1587    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1588      update output.txt of exp. aim.5l_cs.thSI
1589    o various mnc cleanups and improvements:
1590      + shrink lookup tables by factor of ~4
1591      + better error reporting when running out of lookup space
1592      + able to handle longer path/file names (up to 500 chars)
1593    o adjoint:
1594      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1595      - TBD: "hidden" mom_vecinv recomp. in dynamics
1596    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1597     (allow to differentiate between forcing components using new integer flags:
1598      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1599     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1600    o ecco
1601      - enable trend removal from SSH anomaly obs.
1602    o adjoint
1603      - a fix for PmEpR when #undef EXACT_CONSERV
1604      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1605      - try to fix "hidden" recomp. in forward_step for NLFS
1606        (NLFS seems broken sometimes after I checked it in)
1607    o seaice:
1608     - add c-grid version of the dynamic solver:
1609       + three new routines that are the c-grid substitute lsr, dynsolver
1610         and ostres
1611       + put a few fields that were local to dynsolver into global common
1612         blocks, so that I can move the computation of stresses etc into
1613         seaice_lsr (saves coding but may break the adjoint).
1614     - replace more hardwired parameters by runtime parameters
1615     - add ice masks that mask the rhs of the implicit solvers where there
1616       is no ice (commented out in seaice_dynsolver, because i am not sure
1617       if this works properly), eventually this should replace the clipping
1618       of ice velocities in seaice_dynsolver to +/-40cm/s.
1619    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1620      include it only where its needed
1621    o move balancing of fluxes before the call of external_forcing_surf
1622    o seaice:
1623      - correct units of turning angles (now they are really in degrees)
1624      - move computation of GWATX/Y out of main routine into dynsolver
1625      - initialize GWATX/Y in seaice_init
1626    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1627      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1628    o seaice: add runtime flags for turning angles (default to zero)
1629    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1630      and trend from exf forcing and ctrl control adjustments
1631    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1632      (since checkpoint57x_post)
1633    o change the default rotation period to 86164.s = the Earth rotation
1634    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1635      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1636    o seaice advection: add code for choosing between the default (2nd order
1637      central differences) and multiDim advection schemes provided by
1638      pkg/generic_advdiff
1639    o seaice:
1640      - removed all references to SEAICE_GRID.h fields from
1641        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1642        (cubed-sphere configuration will change a little)
1643      - grid computations in seaice_init are obsolete now.
1644      - cleaned up code a little so that is easier to read (hopefully).
1645      - added new (better?) discretizations of default advection and diffusion
1646        (turn on with SEAICEuseFluxForm)
1647      - replace 1 in 3d global fields by kSurface in growth.F
1648      
1649    checkpoint58a_post
1650    o seaice:
1651      - bug fix in advect.F
1652    o shelfice:
1653      - separate shelfice load anomaly from pload (breaks with time
1654        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1655        Its default is 0., but it may be computed more cleverly from (unknown)
1656        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1657        done offline. A good approximation of the pressure load anomaly is
1658        necessary to avoid large initial adjustment processes underneath
1659        deep-reaching shelfice.
1660      - small fix in ISOMIP shelfice_thermodynamics
1661      - add more sophisticated thermodynamics of Hellmer (1989), this is
1662        now the default
1663      - give a few constants more intuitive names
1664    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1665      if bulk formulae are used in long integration (especially EmPmR). Turn
1666      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1667      if balancePrintMean, the imbalance that is substracted is printed to
1668      STDOUT.
1669    o fix bug (typo) in obcs_apply_eta.F
1670    o add a new package shelfice which enables us to model the circulation
1671      underneath shelf-ice with draughts of hundreds of meters.
1672     - works
1673     - to do: + include improved thermodynamics
1674              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1675                instead of new field kTopC
1676              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1677                instead of new field R_shelfIce and new code in ini_depth.F
1678                and ini_mask_etc.F?
1679              + adjust vertical mixing schemes?
1680    o seaice pkg:
1681     - add a cpp-flag to include a simple formula for a salinity dependent
1682       freezing point of sea water at the surface
1683     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1684       meridional stresses are now different (and hopefully correct)
1685    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1686       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1687       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1688    o pkg/diagnostics: add options and parameters for regional-statistics
1689       diagnostics ; define regions by reading a region-mask from a file
1690       (might add other options later)
1691    o pkg/bulk_force:
1692     - add option and parameters to use AIM surface-flux formulae.
1693     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1694       others forcing fields (defined in PARM05, parameter file "data") are loaded
1695       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1696     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1697     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1698     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1699       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1700     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1701    
1702    checkpoint58
1703    o add "--embed-source" option to genmake2 which, when the supporting
1704      tools can be compiled (as determined by genmake2) will turn on the
1705      embed_files package which then embeds the entire MITgcm source code
1706      (*.[fFhc] + Makefile) used for the build within the executable
1707      - requested by CNH but off by default
1708      - adds a paltry <9MB to the mitgcmuv executable in most cases
1709      - only writes the output when useEMBEDSRC in eedata is true
1710    o clean up 3-dim. relaxation codes:
1711      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1712      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1713      * Thanks to Tom Haine for testing!
1714    
1715    checkpoint57z_post
1716    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1717      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1718    o fix the pickup behavior for obcs in combination with ptracers
1719    o fix a bug in ptracers_external_fields_load
1720    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1721      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1722    o transfered surface NH pressure to eta field (if exactConserv).
1723    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1724         and update lab_sea output.txt file.
1725    o completing 3-dim. relaxation code: additional term
1726         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1727      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1728      * At compile time, in "EXF_OPTIONS.h" set
1729          #define  ALLOW_CLIMTEMP_RELAXATION
1730          #define  ALLOW_CLIMSALT_RELAXATION
1731      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1732          tauThetaClimRelax3Dim = 15552000.0,
1733          tauSaltClimRelax3Dim  = 15552000.0,
1734      * 3 cases:
1735          1) Use a constant-in-time 3-dim. field
1736          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1737          3) Real-time relax. to time-evolving prescribed field
1738    o Adding Laplacian-type smoothness constraint on
1739      initial and boundary (forcing) controls (ic, bc)
1740      * enable at compile-time via
1741        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1742      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1743      * Absolute scale somewhat unclear so far
1744      * no area weighting was included since no other cost term does so far
1745    
1746    checkpoint57y_post
1747    First step for a NLFS adjoint
1748    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1749    o new init. routines for calc_r_star, calc_surf_dr
1750    o still need to deal with ini_masks_etc
1751    o testreport seemed happy
1752    checkpoint57y_pre
1753    
1754    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1755    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1756    o add new offset feature to offline pkg (plus minor cleanup)
1757    o cfc fixes for final year of integration
1758    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1759      be in GCHEM_OPTIONS).
1760    
1761    checkpoint57x_post
1762    o fix testreport Pb in multiple test experiment.
1763    o cleanup our namelist syntax in verification:
1764      - make it more F95 standards compliant (some work still needed)
1765      - allows the vast majority of our tests to work with gfortran
1766    o Non-Hydrostatic:
1767     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1768     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1769    o Allow to apply AB on T,S rather than on AB(gT,gS):
1770     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1771     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1772       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1773     - need a "clever" read_pickup to restart from the other AB formulation
1774    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1775    o remove some unused variables (reduces number of compiler warnings)
1776    o adjoint
1777      * Disable useVariableViscosity for adjoint for time being
1778        (there are a number of extensive recomputations)
1779      * Initialize certain variables needed for adjoint
1780    
1781    checkpoint57w_post
1782    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1783                 fix the singleCpuIO RS version of MDSWRITEFIELD
1784       and add a WARNING if using globalFiles=T with multi-processors.
1785    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1786      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1787    o tracer advection scheme:
1788      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1789       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1790       was not very convenient).
1791      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1792       (further tests needed for the implicit DST & Flux-Limiter schemes).
1793    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1794      and sRef for convenience, handy, when you want to initialize
1795      ptracers in a large domain with a constant non-zero value. Also,
1796      untangle ptracers_init.F a little.
1797    
1798    checkpoint57v_post
1799    o change dome exp. to use variable viscosity in side-drag terms.
1800    o remove all the files from the cfc_offline test since they are now
1801      incorporated into tutorial_cfc_offline which has been producing
1802      identical results for a few days of testing
1803    o add new parameter: sideDragFactor to enable half-slip-side BC
1804      and change side-drag S/R to use viscosity from mom_calc_visc
1805      (can switch back by setting sideDragFactor=0.); affects results at
1806      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1807       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1808    o vorticity & strain are now computed without masking, to account for
1809      no-slip-side BC in variable viscosity calculation ; mask is applied
1810      anyway later on, before computing advection/coriolis terms.
1811    o modify exp4 to test new obcs support for reading from external files
1812      and for passive tracers
1813    o fix behavior of ptracers_monitor when monitor output is written to a
1814      netcdf-file; still not independent of monitor.F (writes in the same
1815      file).
1816    o change default value of tRef (put a uniform, meaningful value for ocean
1817      & atmos) and initialize sRef (was missing, as Martin mentioned).
1818    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1819      to be proportional to enstrophy dissipation length.  Thus,
1820       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1821      This is now consistent with Smagorinsky and with the manual.
1822    
1823    checkpoint57u_post
1824    o OBCS and PTRACERS: add open boundary support for passive tracers
1825      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1826        OB-values from file; this is not different from the way theta and salinity
1827        are treated
1828      - however, Orlanski-radiation conditions are not supported, and the model
1829        will stop if you use pTracers and Orlanski at the same time.
1830      - beefed up the rountine obcs_external_fields_load: now only those open
1831        boundary values are overwritten with values from files for which there
1832        are really files, otherwise the OB-fields remain untouched. This makes
1833        it possible to use different OBs at different ends of the domain (as
1834        with EXF)
1835    o reduce number of exch calls in shap_filt (s2).
1836    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1837      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1838    
1839    checkpoint57t_post
1840    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1841    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1842      same truncation, independent of the face number: affects affects several
1843      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1844    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1845      note that biharmonic viscosity + no-slip was not tested in any experiment.
1846    o fix bug in non-linear free-surf side-drag ; generate new output for
1847      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1848    o make mnc honor the writeBinaryPrec flag for most kinds of output
1849    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1850    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1851      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1852    o add brackets in multi-terms sum to get same truncation, independent of
1853      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1854      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1855    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1856      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1857      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1858      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1859      Suggested values of viscosity parameters found in mom_calc_visc.
1860      Many new viscosity diagnostics available.
1861    
1862    checkpoint57s_post
1863    o Add clearing-house for viscosity calculations, mom_calc_visc and
1864      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1865      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1866      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1867      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1868      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1869      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1870      ViscAhStrain and viscAhTension are now retired.
1871    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1872    o In response to JMC's bug report, genmake2 now ignores any soft-links
1873      that it finds in the *current* directory when searching for files.
1874      Soft-links found in any other source directories will still work as
1875      they did before.
1876    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1877      a C routine to unlimit the stack size
1878    o mnc-ify pkg/aim snapshot vars
1879    o mnc-ify pkg/land as requested by Daniel
1880    o various changes to mnc including:
1881      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1882      - output can now be grouped so that all files within a group
1883          change the ITER portion of their names in lock-step together
1884      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1885          and works with both EXCH1 and EXCH2 (but needs more testing)
1886      - writing works for all verification test cases w/ g77 on Linux
1887    
1888    checkpoint57r_post
1889    o make MNC variable initialization happen earlier
1890    o add diagnostics for (almost) each term of the momentum Eq.
1891    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1892    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1893    o remove MINIMAL_TAVE_OUTPUT option ;
1894      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1895    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1896      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1897    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1898    o add time-dependent SST, SSS control
1899    o cost terms in ecco/ modularized (new cost_generic.F)
1900    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1901    o new infrastructure for seaice model vs. obs misfits in seaice/
1902      * driver from the_main_loop.F is seaice_cost_driver.F
1903      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1904      * gradient check in Exp. 6a of natl_box_adjoint/
1905    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1906      (see README file)
1907    
1908    checkpoint57q_post
1909    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1910    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1911      - bug was reported by Jean-Michel and Ian Fenty
1912    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1913      update exp. cpl_aim+ocn output.
1914    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1915      Needed for high-res. runs with large global files
1916      to be able to limit tapelev size
1917    o Changed some tests for adjoint:
1918      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1919      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1920      * global_ocean.90x40x15/ back to default 3-level checkpointing
1921    o Modifications to enable scripted COMMON to MODULE conversion
1922      * verification/OpenAD/code/ has necessary scripts and description;
1923      * converts, compiles and runs successfully;
1924    
1925    checkpoint57p_post
1926    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1927    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1928      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1929    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1930    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1931      (was already the case for dissipation with mom_vecinv,
1932       and also the case for grad.PhiHyd when staggered-timeStep)
1933      This will allow to put dissipation out-off the AB time-stepping.
1934     Unfortunately, affects truncation error. Update output of exp. that "fails"
1935      (cg2d matching number) and leave the others for later: front_relax(10),
1936      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1937      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1938    
1939    checkpoint57o_post
1940    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1941      (2) its ready to be documented during the 20050801 DocFest
1942    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1943      for ideal_2D_oce and lab_sea on linux_ia32_g77
1944    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1945      in global1x1_tot/code_seaice_adj to access indices 32, 33
1946      (worth another tag)
1947    
1948    checkpoint57n_post
1949    o adding precip control xx_precip 32
1950    o adding swflux control xx_swflux 33
1951    o Replacing 10 forcing penalty cost routines by 1 generic.
1952    o Implementing partitioning in time-mean and variable adjustment
1953      for atmos. state.
1954    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1955    o in natl_box_adjoint:
1956      * updated exp 1 to 10
1957        (but does not have time-mean vs. variable split results yet)
1958    o updated global1x1/*_seaice_adj/
1959      to incorporate latest changes
1960    o enable useSingleCpuIO for mdsio vector routines
1961      (applies in particular to tapelev I/O)
1962    o removed inefficient K-loop in all active_file*control*.F
1963    
1964    checkpoint57m_post
1965    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1966      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1967    o pkg/exch2: filling of face-corner halo regions is optional
1968      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1969    
1970    checkpoint57l_post
1971     tag before updating tutorials (pre-release-2)
1972    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1973       for output and interpolation of input fields onto model grid)
1974    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1975       Affects results of exp. rotating_tank ; update output.txt.
1976    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1977          and taking the square quantity and/or using a fraction-weight field.
1978    o fix aim_diagnostics_init.F mate numbers.
1979    o add mnc output capability to diagnostics/diagstat and update
1980      our cvsignore files for the ACSII output generated
1981    
1982    checkpoint57k_post
1983    o lab_sea now uses diagnostics package and provides a suite of
1984      new EXF diagnostics output.
1985    
1986    checkpoint57j_post
1987    o exf
1988      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1989        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1990        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1991      * extended diagnostics output
1992        - now includes all EXF variables
1993        - hs, hl moved to common block
1994        - separate S/R for diagnostics, called after ctrl vector is added
1995        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1996        - EXFqnet contains true Qnet (i.e. includes qsw)
1997      * updated verif. lab_sea, global_with_exf
1998      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1999        to ensure that diagnostics sees a true EXFqnet
2000    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2001    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2002      several times with different frequencies.
2003    o mnc-ify the thsice package as requested by Daniel Enderton
2004      - the monitor--MNC output needs work
2005      - many attributes need to be added (most are currently blank)
2006    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2007      - many attributes need to be added (most are currently blank)
2008    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2009    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2010    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2011      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2012         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2013    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2014     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2015    
2016    checkpoint57i_post
2017    o Diagnostics package was changed: diagnostic allocation is now deactivated
2018      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2019    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2020      add 1rst Order upwind vertical Shear.
2021    o add a quick fix for A/B checkpointing in OFFLINE mode
2022    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2023      end-run around the C/Fortran linking horror in eesup/src/timers.F
2024    o added pkg/runclock: allows user to terminate run based on wall clock
2025    o added non-hydrostatic scaling parameter: nh_am2
2026    o pkg/my82: futile attempt to make results compiler-independent by adding
2027      some "_d 0", etc. no effect.
2028    o for mnc output, fill the 'T' coordinate var with myTime and create a
2029      separate 'iter' variable for iteration count
2030    o pkg/diagnostics:
2031      add new capability: output of Global/Regional & per-level statistics ;
2032      tested against monitor output (including land & thSIce) on various exp.
2033    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2034    
2035    checkpoint57h_done
2036      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2037      data.diagnostics, data.gchem, data.ptracers) is done.
2038    
2039    o pkg/diagnostics: prepare for Global/Regional statistics.
2040      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2041    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2042      and rename it: DIFFERENT_MULTIPLE
2043    
2044    checkpoint57h_post
2045    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2046    o pkg/diagnostics: change output frequency, now in seconds (instead
2047      of Nb of iterations). This requires to change data.diagnostics.
2048    checkpoint57h_pre
2049    
2050    o in mnc, let the user create the output dir if both mnc_outdir_date
2051      and mnc_outdir_num are false
2052    o add fflags() to pkg/diagnostics which allows one to specify, on a
2053      per-file basis, the file precision [default behavior is unchanged]
2054    o added diagnostics to pkg/kpp, including computation of mixed layer
2055      depth based on a temperature/density criterion
2056    o updated verification/natl_box to test the new pkg/kpp diagnostics
2057    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2058    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2059    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2060      not mnc -- this mistake was found by JMC and is now corrected
2061    
2062    checkpoint57g_post
2063    o add Adams-Bashforth 3rd Order time stepping:
2064      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2065      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2066    checkpoint57g_pre
2067    
2068    o make lambda[Theta,Salt]ClimRelax spatially varying
2069      (default remains spatially uniform constant based on tau)
2070    o added new control variables
2071      * init. uVel, vVel, etanN
2072      * lambda[Theta,Salt]ClimRelax
2073    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2074      (suggested by G. Forget)
2075    
2076    checkpoint57f_post
2077    o add parameter "baseTime" = model base time = time at iteration zero
2078      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2079      account for baseTime shift
2080    o move Coriolis arrays from PARAMS.h to GRID.h
2081    checkpoint57f_pre
2082    
2083    o mnc-ifying the seaice package
2084    o introduced an alternative length scale calculation for use in the limiting
2085      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2086    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2087    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2088      as well as grad(vort3).  Made it compatible with both approximate form
2089      for the cubed sphere and full form of these gradients.  Added flag
2090      useFullLeith to select between approximate and full form.  
2091    o add "d0" in getcon.F to reduce differences between compilers/platforms
2092      update output.txt of exp. fizhi-gridalt-hs
2093    o change port_rand funtion to allow to set the seed.
2094    o fix obscure MNC bug involving conversion between reals and integers
2095      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2096        new version is now more standards-compliant
2097    o adjoint-related modifications
2098      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2099      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2100      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2101    
2102    checkpoint57e_post
2103    o Adding eddy stress controls a la Ferreira et al.
2104    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2105    
2106    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2107      update output.txt of exp. fizhi-gridalt-hs
2108    o add more "Z" dimensions and associated coordinate vars to MNC
2109    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2110    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2111      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2112      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2113      months and years.  Requires pkg/cal.
2114    o diagnostics: add pickup functionality
2115      - off by default for backwards compatibility
2116      - current version only uses MDSIO -- MNC will be added
2117    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2118    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2119    
2120    checkpoint57d_post
2121    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2122    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2123      output from the diagnostics package
2124    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2125    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2126      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2127    o add coordinate variables to the MNC output from the diagnostics package
2128    o change MNC-flags default value: true when useMNC=TRUE
2129    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2130      the ability (off by default) to read the grid information using MNC
2131    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2132    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2133    o do snap-shot diagnostics at the middle of the time-interval (instead of
2134      at the end).
2135    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2136      new test for AIM with thSIce + slab-ocean
2137    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2138    o move state variable diagnostics to the beginning of the time step ;
2139      (note: still needs some work specially for snap-shot diagnostics)
2140      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2141    
2142    checkpoint57c_post
2143    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2144    o generate new output.txt files on faulks with g77 & the new -ieee option
2145    checkpoint57c_pre
2146    
2147    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2148      update output.txt of exp. global_ocean.90x40x15
2149    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2150      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2151    o add saltFlux(+File) forcing capability with periodicExternalForcing
2152    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2153    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2154    o improvements for the MNC output from DIAGNOSTICS:
2155      - correct handling of the unlimitied dimension
2156      - all dims now have associated coordinate variables
2157      - variables located at U, V, and Corner ("Z") points are now written
2158        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2159        *all* data points are output
2160    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2161    o added pkg/seaice/seaice_monitor.F
2162    o mdsio_readfield.F can now read files visible only to master MPI process.
2163    o pkg/seaice: some test code for ice-modified ocean stress
2164    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2165      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2166      spurious negative numbers for precipitation and humidity.  Will cause
2167      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2168    o pkg/ctrl/
2169      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2170        May be enabled via doPackDiag
2171      *  introduce z-scaling of
2172         + gradient (doZscalePack) and
2173         + control (doZscaleUnpack)
2174    o pkg/mdsio/
2175      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2176      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2177    
2178    checkpoint57b_post
2179    o simplify options in diagnostics_fill arguments (remove weird combinations)
2180    o fix MNC coordinate variables so that they now contain per-face index
2181      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2182      general, EXCH2 grids are only aligned to a "local" coordinate system
2183    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2184    o Implement instantaneous output within pkg diagnostics:
2185      setting a negative frequency in data.diagnostics produces
2186     "snap-shot" output (as opposed to time-average if freq > 0)
2187    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2188      NOTE: change ptracer diagnostics name: use 2 characters to work with
2189            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2190    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2191      becomes the coordinate variable for the 'T' dimension
2192    o add CF-style coordinate variables to MNC
2193      - just a first cut:  numbers are meaningless on the cubesphere and
2194        missing along the T axis but otherwise it works!
2195    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2196    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2197    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2198      this is based directly on what the model compute, so that the content of
2199      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2200    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2201    o clean up build options files for SunOS, in particular
2202      - remove -traditional from xmakedepend
2203      - change -xarch=v9 to -xarch=native for f77
2204      - restore use of make (not gmake)
2205      - add CC=gcc if using g77
2206    o changes per discussion of AM, JMC, & EH3 today:
2207      - move redundant "grid" variables out of "state" -- in preparation of
2208        creating proper CF-style coordinate variables and in recognition
2209        that any/all grid variables can be easily copied (eg. w/NCO) from
2210        the grid files into any of the other NetCDF files
2211      - *always* output grid variables with MDSIO (this will eventually be
2212        changed)
2213      - output MNC grid file if useMNC is true
2214    o every instance of _END_MASTER() has been found and replaced with
2215      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2216      preprocessors
2217    o re-arrange diagnostics pkg initialisation:
2218     - allow each package to extend the available diagnostics list
2219     - add some checking and fix small problems (multi-threaded, ...)
2220     - new S/R diagnostics_fill (replace fill_diagnostics):
2221       look through the short list of active diag. (instead of the long list)
2222       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2223    
2224    checkpoint57a_post
2225    o this set of changes restores TAMC compatibility
2226      tested for global_ocean.90x40x15 adjoint on trough
2227      (what a pain)
2228    
2229    checkpoint57a_pre
2230    o some modifs in tools/build_options for sunos
2231    o call ctrl_pack for ctrl at end for optimcycle=0
2232    
2233    checkpoint57
2234    o add horizontal bi-harmonic viscosity for vertical velocity
2235      - new parameter viscA4W (defaults to viscA4)
2236      - affects only non-hydrostatic code
2237      - to be done: no-slip lateral boundary conditions
2238    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2239    o implement Implicit Vertical advection for pTracers
2240    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2241      (implemented also for implicit vertical diffusion & advection)
2242    o OBCS: extend application of tracer open boundary conditions
2243      to a strip beyond the boundary of width Olx/Oly
2244    o add call monitor to TAF set of required calls (flow directives)
2245      and include in natl_box_adjoint
2246    o untangle a few ifdefs related to cost, ctrl, autodiff
2247      untangel a few ALLOW_ECCO_OPTIMIZATION
2248    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2249      (theta2, salt2 in ecco_cost_weights)
2250    
2251    checkpoint56c_post
2252    o OBCS as control variables
2253      - update ctrl_ad_diff.list, obcs_ad_diff.list
2254      - remove balance of obcs controls from default
2255      - fix index bug nobcs in ctrl_init
2256      - fix dummy fields filen in ctrl_pack
2257      - add dummy weights for obcs
2258    o lsopt: comment out fort.94 output
2259    o optim:
2260      - remove unnecessary header files
2261      - adjusted namelists
2262      - add xerbla.F to Makefile
2263    o exf:
2264      - multiple modifications of exf_check_range
2265      - unit change in exf_init_runoff from [m/year] to [m/s]
2266    o mdsio:
2267      - i/o-vector change debugLevel from debLevA to debLevB
2268    
2269    checkpoint56b_post
2270    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2271      is called from DO_THE_MODEL_IO
2272      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2273      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2274      - clean up PTRACERS_WRITE_TIMEAVE a little
2275    o add another verification experiment that tests both the cfc-pkg and
2276      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2277      reactive tendencies treated inline with regular timestepping
2278    o testreport previously did a lousy job of comparing small numbers, so
2279      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2280      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2281      testreport.
2282    o ptracers_monitor: bug fix for MPI
2283    
2284    checkpoint56a_post
2285    o GCHEM: finish reorganizating the package
2286      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2287        (introduces another 3D-array for each passive tracer, but only if
2288        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2289        gchemTendency is not needed because the timestep is done separately)
2290      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2291      - GCHEM is now---more or less cleanly---separate from PTRACERS
2292      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2293        so clear to me how that should be done in a general way.
2294    o CFC: improve formatting of output in CFC_ATMOS
2295    o PTRACERS:
2296      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2297        that ALL experiments with ptracers enable can be checked. This makes
2298        GCHEM_MONITOR obsolete.
2299      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2300        monitorFreq
2301      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2302    o add PTRACERS (PTR0[1-5]) to testreport output
2303    o exf_check_range:
2304      * default changed to .TRUE.
2305      * will check values for niter0 if debLevA, every timestep if debLevB
2306      * STOP in exf_check_range if 'out of range'
2307      * range chosen generous to allow for potential extema
2308      TBD: a version with stricter range
2309           permitted range would be runtime parameters
2310    o GMredi:
2311      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2312      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2313      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2314    o GCHEM:
2315      - move call to GCHEM_FORCING_SEP, so that it is now called before
2316        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2317      - introduced a useGCHEM runtime flag and applied it everywhere.
2318      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2319        this flag is now only visible within GCHEM-pkg routines.
2320      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2321        be replaced by a 3D array that is computed before thermodynamics; for
2322        this, the tracer ID iTracer had to be included into the parameter list
2323        of ptracers_forcing
2324      - set up forward_step to call gchem_forcing, that will replace
2325        gchem_forcing_int in ptracers_forcing
2326      - cleaning up
2327    o small cleaning of exch2: remove files that are also in eesupp/src
2328    
2329    checkpoint56
2330    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2331    o mnc: cleanup "full" files--fixes out-of-memory problem
2332    o ECCO-GODAE
2333      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2334      * fully merged and updated from SIO code
2335        windstress sign change affects
2336        - exf_inscal_[u/v]stress
2337        - sign of xx_tau[u/v] adjustments
2338        - signs in cost_scat
2339      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2340      * natl_box_adjoint updated and compressed
2341      * 2-level checkpoint switch added
2342        (tested in EXP. 1 of natl_box_adjoint)
2343      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2344    o SVD
2345      * first complete, non-hacked version for SVD calculations
2346      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2347        performed via direct access files admtlm_vector.it????
2348        (via ctrl_[un]pack)
2349      * optimcycle is used for ARPACK iteration counter
2350        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2351      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2352        and add linear transforms where necessary
2353      * controls are initial/final SST, SSS (can be extended; need to check
2354        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2355    o mdsio: filename info to both stderr, stdout
2356    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2357      from sign change
2358    
2359    checkpoint55j_post
2360    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2361      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2362    o add consistent build directories and .cvsignore files to verification
2363    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2364    o make all subroutines 30 or less characters in length for certain older
2365      compilers to work (a thorough search only turns up two routines in
2366      pkg/ptracers)
2367    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2368      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2369    
2370    checkpoint55i_post
2371    o change arrays for total vertical diffusivity (2.D if explicit,
2372      3.D if implicit) ; each ptracer uses its own background value.
2373    o added mnc/NetCDF output capability to ocn_compon_interf
2374      - added bits to verification/cpl_aim+ocn so that it can run on
2375        ITRDA and other clusters without the mpirun "-wd" option
2376    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2377      configuration
2378    o give MNC the ability to create additional files rather than
2379      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2380      - the default is just less than 2GB which is a practical limit
2381        on many systems
2382    o Compute the non-local term using either KPP vertical diffusivity (=default)
2383       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2384    
2385    checkpoint55h_post
2386    o add verification test "vermix"
2387    o remove all the *_ioinc flags and replace with the single global
2388      outputTypesInclusive flag
2389    o allow to set a vertical profile of vertical diffusivity for T & S
2390    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2391    o useMNC moved from data.mnc to data.pkg
2392    
2393    checkpoint55g_post
2394    o Renaming carbon AD experiments to comply with testreport conventions
2395    o Updating adjoint of Held-Suarez hs94.1x64x5
2396    o Fixing directives for non-ECCO forward_step, after ECCO directives
2397      have been fixed to avoid recomp. of do_oceanic_phys
2398      Works well for global_ocean.90x40x15,
2399      but recomp. issue remains for carbon
2400    o Updating adjoint output for natl_box_adjoint after
2401      pkg/ecco has been modified (see taga c55d_post)
2402    
2403    checkpoint55f_post
2404    o rename to timeave_init_fixed
2405    
2406    checkpoint55e_post
2407    o some delicate re-shuffle of store directives to avoid one
2408      extra call of do_oceanic_physics
2409      affects ecco_the_main_loop.F, do_oceanic_physics.F
2410      checkpoint_lev1_directives.h
2411    o NB: this may break global_ocean adjoint temporarily,
2412      but it is clear how to fix it. Will do later, need this now.
2413    
2414    checkpoint55d_post
2415    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2416    o ecco_cost_weights is modified to 1x1 runs
2417    o modifs to allow observations to be read in as
2418      single file or yearly files
2419    o enable to read exf forcing fields as either
2420      single file or yearly files (flag useExfYearlyFields)
2421    checkpoint55d_pre
2422    
2423    o switch between 2-level and 3-level checkpointing
2424    o add ability of MNC to write local and "partial" (eg. 2D slices where
2425      the full 3D field is never actually stored) arrays to NetCDF files
2426      with the correct (that is, the complete multi-dimensional) set of
2427      array indicies
2428      - used in mom_vecinv() to write the diagFreq output
2429      - tested (demonstrated) in verification/aim.5l_cs
2430    o further mnc-ification
2431      - add verification/lab_sea to the list with mnc setups
2432      - fix undefined mnc v-names in cd_code
2433      - add kpp to mnc output (both snapshot and timeave)
2434    o non-hydrostatic code
2435      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2436        in calc_gw.F
2437      - defaults to viscAh
2438      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2439        friction or Leith) in non-hydrostatic mode, as long as there is
2440        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2441    o pkg/cost
2442      extend simple cost functions to treat time mean quantities
2443      (T,U,V) via cost_accumulate_state from cost_tile
2444    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2445        be 2 times larger than the minimum size the advection scheme requires.
2446        now get a perfect conservation of salt in advect_cs test-exp (updated)
2447    o GGL90 (Gaspar's TKE mixed layer)
2448      - add horizontal diffusion of TKE, requires exchanges in
2449        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2450        default. In OPA there is no horizontal diffusion of TKE but the
2451        mixing coefficients are computed from a horizontal average of TKE of
2452        6 points or so. I think that diffusion has a little more physical
2453        justification.
2454      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2455        was in vain)
2456      - mask tke-variable in ggl90_init
2457    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2458    o fix biharmonic diffusion on CS-grid.
2459    o more obcs stuff
2460      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2461        for reading boundary values. This routine is called from
2462        obcs_prescribe_read
2463      - updated obcs_check
2464      - changed sponge layer relaxation parameter units for days to seconds
2465      - turned off sponge layer by default
2466      - changed argument list of OBCS_CALC to myTime+deltaTclock
2467      - fixed about 35 bugs in obcs_external_fields_load
2468    
2469    checkpoint55c_post
2470    o obcs stuff
2471      - new runtime flags useOBCSprescribe, useOBCSbalance
2472      - re-arranged obcs_calc
2473      - moved exf_getobcs to obcs_prescibe_read
2474        obcs_prescibe_read is called after ORLANSKI stuff
2475        and independent of it (executable can contain all).
2476      - updated obcs_check
2477      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2478        These may be necessary only if tangential velocities are
2479        prescribed at OB, not sure, needs testing.
2480    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2481      which simplifies the calls and passes the ifc check-bounds test
2482    
2483    checkpoint55b_post
2484    o add a 2D scalar, Z location, exchange_2 routine.
2485    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2486      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2487      affects advect_cs results (for the wrong reason): update output.txt
2488    o use a more standard discretization for biharmonic viscosity ;
2489     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2490      affects results of dome set-up: update output.txt
2491    o fix gad_advection.F (CubedSphere part), back to version 1.23
2492    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2493    
2494    checkpoint55a_post
2495    o merged code to
2496      * prescribe/read time-dependent open boundaries
2497        (works in conjunction with exf, cal)
2498      * sponge layer code for open boundaries
2499      * each boundary N/S/E/W now has its own CPP option
2500        (healthy for the adjoint)
2501    
2502    checkpoint55
2503    o up-to-date adjoint of previous breaks
2504      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2505      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2506      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2507      - carbon: * remove tr1-related adjoint verification
2508                * add ptracer as control variable
2509    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2510      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2511    
2512    checkpoint54f_post
2513    o in verification/carbin/ remove experiment related to
2514      ALLOW_PASSIVE_TRACER (array tr1 etc)
2515      code_ad/ input_ad/ results_ad
2516    
2517    o add two new packages
2518      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2519        + subject to optimization (memory)
2520      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2521        + subject to reordering (many GOTOs in the original code)
2522        + so far opps is called for every (i,j) point, and then operates in
2523          the vertical; one may want to reorder the scheme in order operate in
2524          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2525          fields)
2526    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2527      - all verification tests compile and run with linux_ia32_g77
2528      - defaults are compatible with current input files--nothing
2529        should change if you were not previously using MNC
2530      - MNC output has been added in numerous places (eg. timeave)
2531        but there are still a few writes not yet do-able with MNC
2532        (this is in progress)
2533      - flags now allow for either/or/both use of MDSIO and MNC and
2534        documentation will soon follow
2535      - numerous small formatting cleanups for ProTeX
2536    o add version info (via BUILD_INFO.h) to MNC and stdout
2537    
2538    checkpoint54e_post
2539    o add two new packages
2540      - pp81 (Packanowski and Philander, 1981), Richardson number and
2541        stratification dependent mixing
2542      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2543      - these scheme operate in a similar manner as KPP (without ghat, of
2544        course), however there is only one diffusivity that is used for both
2545        temperature and salinity (and passive tracers)
2546    o add offline package
2547    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2548      provided by Stephanie Dutkiewicz
2549    o genmake2: add ability to search for C compilers and cleanup test output
2550      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2551    
2552    checkpoint54d_post
2553    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2554    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2555      leading to additional shift by 5 days each year of integration
2556       (i.e. leading to considerable offset over the years)
2557    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2558    o start with no AB and no initial filtering (staggerTimeStep):
2559      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2560    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2561      (external loading & cpl import/export stay in forward_step.F)
2562    o update coupling interface to work with new staggerTimeStep
2563    o change MDSIO ptracers_pickup.
2564    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2565    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2566    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2567    
2568    checkpoint54c_post
2569    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2570      this affects (truncation error) output.txt of test-exp:
2571       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2572    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2573    o change Qnet to always be the net heat flux, (+upward).
2574      affects (truncation error) output of natl_box exp.: updated
2575    o define the max number of passive tracers in PTRACERS_SIZE.h
2576    o start to test mnc routinely in exp0
2577    o add sea-ice loading (sIceLoad) as a new forcing field.
2578    
2579    checkpoint54b_post
2580    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2581       impressive on Altix and Opteron systems)
2582    o diagnostics can now write NetCDF files through the mnc package
2583    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2584    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2585    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2586      affects (truncation error) output of lab_sea & natl_box exp.: updated
2587    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2588    
2589    checkpoint54a_post
2590    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2591    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2592    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2593    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2594      + internal_wave (shift in writing cg2d_ini_res)
2595    checkpoint54a_pre
2596    
2597    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2598      - modified verification/lab_sea and natl_box_adjoint accordingly
2599    
2600    checkpoint54
2601    checkpoint53g_post
2602    o prepare splitting of thermodynamics: store convect.counter in common block
2603    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2604      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2605    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2606    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2607    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2608    o restore adjointability
2609    
2610    checkpoint53f_post
2611    o modifications that affect AIM experiment results (update output.txt):
2612      - no advection of S at top interface Nr (pkg/generic_advdiff)
2613      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2614    o AIM pkg:
2615      - include stability function into surf.Flux derivative relative to Tsurf
2616      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2617    
2618    checkpoint53e_post
2619    o merged cylindrical coord configuration
2620    o added rotating_tank experiment
2621    checkpoint53e_pre
2622    
2623    checkpoint53d_post
2624    o faulks upgraded: re-generate output.txt that have changed:
2625       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2626    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2627    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2628    o added Sadourny discretization of Coriolis
2629      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2630      - re-enabled use of omega3 (useAbsVorticity)
2631    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2632      vector-invariant equations
2633      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2634    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2635      hopefully without new bugs
2636      - still to do: biharmonic friction for non-hydrostatic w
2637    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2638    o regenerated output for global_ocean_ebm (using -ieee)
2639    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2640      of mom_common/
2641      - simple re-arrangement of instructions within computing loop
2642    checkpoint53d_pre
2643    
2644    checkpoint53c_post
2645    o new version of coupler for AIM+thSIce and Ocean models
2646     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2647     - land: change Evaporation of snow
2648     - aim with thSIce: fix bug in snow-precip.
2649    o changes to calc_gw.F
2650     - bug fix for w^2 term near the bottom boundary
2651     - (hopefully) improve the lateral slip boundary condtions for use with
2652        partial/looped cells
2653      - because the bug fix changes two verification experiments anyway (exp5
2654        and plume on slope), change the lateral boundary condition from half slip
2655        to the value of no_slip_sides
2656    o ebm package wasnt quite up to the parallel task. Fixed that.
2657    o Adjoint of EBM package + verification
2658      * TLM OK
2659      * ADM not sufficient accuracy yet (needs further testing)
2660    
2661    checkpoint53b_post
2662    o Commiting new energy balance model to repository
2663      * package is pkg/ebm
2664      * verif. is verification/global_ocean_ebm
2665      * references are in ebm_driver.F
2666    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2667    C        Global thermohaline circulation. Part I:
2668    C        Sensitivity to atmospheric moisture transport.
2669    C        J. Climate 12(1), 71-82
2670    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2671    C        Global thermohaline circulation. Part II:
2672    C        Sensitivity with interactive transport.
2673    C        J. Climate 12(1), 83-91
2674    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2675    C        Destabilization of the thermohaline circulation
2676    C        by atmospheric eddy transports.
2677    C        J. Climate 7(12), 1870-1882
2678    o Will need long integration testing.
2679    checkpoint53b_pre
2680    
2681    o created pkg/mom_common in preparation for variable viscosity code
2682    o renamed and split ini_mnc_io
2683    o pkg/land: only liquid water can diffuse or run-off
2684    o AIM using land: soil wetness availability account for snow
2685    o added printMapIncludesZeros to EEPARMS namelist
2686    
2687    checkpoint53a_post
2688    o restore TAMC compatiility for exf_constants.h
2689      (no usage of _d in .h)
2690    o Additional storing in KPP in an attempt to fix
2691      TAMC problem with adjoint of KPP code.
2692      (no success...)
2693      Identical code works fine with TAF.
2694    o Fixed verification/natl_box_adjoint experiments.
2695      Initial conditions for Experiments 4 and 5 are now
2696      set to "SEAICE_initialHEFF=0", which is more reasonable,
2697      and hence gives results closer to that of Experiment 2.
2698      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2699    
2700    checkpoint53
2701    o stable checkpoint with up to date adjoint
2702      TLM tests only run for 1st grdchk at the moment. Its unclear if
2703      this is a code problem or a problem with resetting code for g_
2704      variables that is being autogenerated wrong.
2705      Otherwise:
2706       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2707       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2708         are both still in chaos following their security messes.
2709    
2710    checkpoint52n_post
2711    o various build (mostly genmake2) changes including:
2712      - ability to build/run more easily within Cygwin and MacOS X
2713      - more complicated Makefiles with a stronger dependence on Gnu Make
2714    o pkg/seaice modifications
2715      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2716        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2717        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2718      - changed proxy for geostrophic velocity and updated
2719        verification/lab_sea/results/* accordingly
2720      - removed ADI dynamic solver from pkg/seaice
2721      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2722        they caused a segmentation fault under certain circumstances
2723      - removed unused field WATR
2724    o bug fix in exf-package:
2725      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2726         now reflect that.
2727    o small fixes in the cal-package:
2728      - set reference date to first of January for the 'model'-calendar
2729      - failing of cal_CheckDate in cal_FullDate now actually results in a
2730        warning
2731    o small modifications in exf-package to increase flexibility:
2732      - change climtempfreeze from a constant to a runtime parameter that
2733        is specified in data.exf_clim (default = -1.9)
2734      - introduce runtime parameter windstressmax (default = 2.0) that is
2735        specified in data.exf
2736    o fix in pkg/thsice:
2737      - update Evap (Tsf changes) to be consistent with Latent heat flux
2738      - maintain snow precipitation unchanged (even if Tsf >=0).
2739     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2740    
2741    checkpoint52m_post
2742    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2743      this does not change any of the results, because myIter=0 in swfrac always
2744      lead to jwtype=2 (the default anyway), but the call makes little sense
2745      as a default
2746    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2747    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2748      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2749    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2750    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2751    o extending useSingleCpuIO option to work with new exch2 I/O format
2752      - old-style, missing-tile I/O is still accessible by defining CPP
2753        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2754    o monitor package can write to NetCDF files and/or STDOUT
2755    o fix re-definition bug in MNC_GRID_INIT_ALL()
2756    o doc/api_reference added
2757      - a framework for building an API Reference Manual using all
2758        the "protex" comments embedded in the code
2759      - see pkg/generic_advdiff, pkg/mnc for examples
2760    o MNC:
2761      - make myThid the last argument for all subroutines
2762      - new default for the grid files: NO halos
2763      - add useMNC and other run-time flags
2764      - separate per-file-group handling of the unlimited dimension
2765      - early initialization of MNC w/ flags read at the eeboot stage
2766        and lookup tables set in initialize_fixed
2767      - write all MNC output to a freshly-created directory
2768    o thermodynamics sea-ice (thsice) is now tested with testreport.
2769    o test exp. advect_cs: use the standard cs32 grid ; update output.
2770    o Added functionality to grdchk:
2771      pick global i,j,k position (or nearest wet) where to perform check.
2772    
2773    checkpoint52l_post
2774    o new land formulation:
2775      a) use ground enthalpy as prognostic variable to ensure exact
2776         energy conservation.
2777      b) account for water temperature and for latent heat of freezing
2778         in all processes (rain, run-off, ground storage)
2779      c) compute surface and ground temperature implicitly.
2780    o aim_v23 modification for new land model:
2781      a) Treat separately land / ocean / sea-ice surface fluxes
2782         to allow implicit computation of land & sea-ice surface temp.
2783      b) add snow precipitation.
2784    checkpoint52l_pre
2785    
2786    o fix problem (when 1 tile is empty) in min/max monitor.
2787    o fix bug in timeAve (u,vZetatave in common block)
2788    o no restoring terms under ice for pkg/seaice
2789    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2790    o bug fix for pkg/seaice pickups
2791    o change MNC call locations and add coordinate attributes
2792    o mask vorticity at the corner ; affects global_ocean.cs output
2793    o fix ini_curvilinear_grid ; test CS experiments with mpi
2794    o aim.5l_cs: modify sea-ice fraction input file ; update output
2795    o exf: Adding simple range check routine for exf fields after read
2796    
2797    checkpoint52k_post
2798    o removed top-level directory "diags"
2799      - we migrated these functions to pkg/timeave a long time ago
2800    o fixed bug introduced in pkg/monitor
2801    o accuracy ctrlprec = 32 insuffient for gradient checks using
2802      averaged fields (I/O via cost_averages)
2803      -> use ctrl.h in active_file*.F to control I/O precision.
2804    o paramter list of CALL ADTHE_MAIN_LOOP
2805    o added initial do_the_model_io to ecco
2806    o set all ...Freq to zero after cost_final
2807      taveFreq, dumpFreq, pChkptFreq
2808    o MAIN and ECCO differentiability restored
2809    
2810    checkpoint52j_post
2811    o fix nchklev in tamc.h for global_ocean...
2812    o Bringing flow and store directives up-to-date
2813    o Really weird thing!
2814      call do_the_model_io from the_main_loop with parameters
2815      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2816      TAF places a faulty re-call of initialise_varia
2817      after cost_final call which should not be there!
2818    checkpoint52j_pre
2819    
2820    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2821      error messages
2822    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2823    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2824      debug output
2825    o modfied mdsio_writefield.F to handle non-global files under exch2
2826    o update AIM Cubed-Sphere exp (aim.5l_cs):
2827      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2828    o update AIM Equatorial Channel exp:
2829      use standard aim_v23 pkg and change the SST fields to be more realistic.
2830    o globalFile now works with exch2
2831    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2832      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2833    o limit timeave output for hi-res integrations
2834    
2835    checkpoint52i_post
2836    o removed CPP_EEOPTIONS.h from verification/*/code
2837    o updated the tiling for global_ocean_pressure
2838    checkpoint52i_pre
2839    
2840    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2841      the old pkg/aim).
2842    
2843    checkpoint52h_pre
2844    o shortened offending lines in exch2_send_rx?.template
2845    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2846    o genmake2: add build & execute test for NetCDF code
2847    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2848      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2849    o added useSingleCPUIO flag to monitor.F and mon_out.F
2850    o added temporary hack for sea-ice dynamics on the cube:
2851      metric terms are ignored and it is assumed that
2852      there is no sea-ice on cube faces 1, 2, 4, and 5.
2853    
2854    checkpoint52f_post
2855    o added exch2 cube routines to pkg/exch2
2856    o modified hs94.cs-32x32x5 to use it
2857    o added new grid files to hs94.cs-32x32x5
2858    checkpoint52f_pre
2859    
2860    checkpoint52e_post
2861    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2862      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2863    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2864      to work with implicit vertical advection and AB ;
2865    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2866    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2867     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2868    checkpoint52e_pre
2869    
2870    o fix bug in impldiff when Nr=1 or Nr=2.
2871    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2872    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2873    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2874      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2875    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2876    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2877    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2878    
2879    checkpoint52d_post
2880    o re-tiled many expts to allow comparison in multi-processor mode
2881      - updated output accordingly
2882      - changed hs94.128x64x5 to use intial T from file rather than use the
2883        random number generator
2884    o add infrastructure in model routines for fizhi and gridalt packages
2885    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2886    o changes to permit hi-res, cubed-sphere, configuration
2887      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2888      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2889      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2890        of surface winds for the cube
2891      (A verification experiment, based on global_ocean.cs32x15, but with
2892       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2893       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2894       complete with example surface forcing files and matlab scripts to look
2895       at the output and compare it with that of global_ocean.cs32x15.)
2896    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2897       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2898       to conform to the common rule.
2899    o check-in the first version of the coupler + interfaces for multi-components
2900       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2901       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2902       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2903       - ocean and atmos. share the same horizontal grid (no interpolation).
2904       - exchanges between component and coupler is done in forward_step
2905    o new verification experiment, cpl_aim+ocn:
2906       coupled ocean - AIM atmosphere on cs32 grid.
2907    
2908    checkpoint52d_pre
2909    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2910    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2911    
2912    checkpoint52c_post
2913    o Fixing OPTIONS files for use of exf:
2914      - ALLOW_ECCO not needed
2915      - ECCO_CPPOPTIONS.h should not be included from
2916        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2917        as has been the case in the past
2918      - All cal/exf related options are currently set in
2919        single header file. Should remain so until we
2920        agree on a consistent new policy.
2921    o Removed all CPP options for cal package.
2922      cal has no more CPP options.
2923    o modified STOREs in GAD_ADVECTION
2924    o corrected key comp. for passkey
2925    
2926    checkpoint52b_post
2927    o new version: "thsice" of thermodynamic sea-ice pkg:
2928     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2929     - modify fluxes but do not change theta directly;
2930     - light cleaning of bulk_force pkg (still needed with thsice).
2931     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2932       + output_thsice.txt to test thsice & bulk_force pkgs.
2933    o put back grid & coriolis monitor output.
2934    checkpoint52b_pre
2935    
2936    o call "do_the_model_io" at the beginning (=> dump initial state)
2937    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2938    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2939      (need info on NUMBER_OF_PTRACERS)
2940    o missing PTRACERS headers in some routines
2941    o default tamc.h in pkg/autodiff supposed to crash
2942      to ensure proper customization
2943    
2944    checkpoint52a_post
2945    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2946      - moved surfaceTendencyTice from pkg/seaice to main code
2947      - subroutine FREEZE_SURFACE now limits only surface temperature
2948        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2949        => new output.txt for global_ocean.cs32x15 & global_with_exf
2950      - keep the old version of FREEZE for backward compatibility;
2951        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2952      - corresponding modifs for TAF directives
2953    o added surface flux output variables to TIMEAVE_STATVARS
2954    o time-averaged output for pkg/ptracers
2955    o fix problem with ECCO-related divided adjoint
2956      snapshot file was missing some ad-variables,
2957      but no warning issued by TAF
2958    
2959    checkpoint52a_pre
2960    o some bug fixes for #undef REAL4_IS_SLOW
2961    
2962    checkpoint52 = ecco_c52_e35
2963    o after testing adjoints of checkpoint51u_post
2964    
2965    checkpoint51u_post
2966    o this is the post-merge tag of the ecco-branch
2967      (needs another clean checkout and re-testing)
2968    o various natl_box_adjoint configs and results
2969      but no input fields
2970    o obcs adjoint not yet merged!
2971    o adding ECCO global 1x1 and 2x2 degree configs
2972    o updated/extended some store directives for seaice
2973    o pkg/ecco now containes ecco-specific part of cost function
2974    o top level routines the_main_loop, forward_step
2975      supersede those in model/src/
2976      previous input data.cost now in data.ecco
2977      (new namelist ecco_cost_nml)
2978    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2979    
2980    checkpoint51t_post
2981    o this is the pre-merge tag of the ecco-branch
2982    
2983    checkpoint51s_post
2984    o cleanup: removed various obsolete #define-s
2985    o pkg/grdchk
2986      - renamed 'ph-grd 3' to 'grad-res'
2987      - merged from ecco-branch
2988        (remaining bug fixes for obcs gradient checks)
2989      - additional high-precision output for testreport
2990        (grep for 'precision_grdchk_result')
2991    
2992    checkpoint51r_post
2993    o cleaned up or removed CPP_OPTIONS.h files
2994    o updated results for some of the tests to reflect the new
2995      optfiles (-ieee: -O0 instead of -O3)
2996    
2997    checkpoint51q_post
2998    o cd_code:
2999      - moved cd_scheme.F -> cd_code_scheme.F
3000      - separate read_checkpoint from cd_code_ini_vars.F
3001      - separated cd_code part from write_checkpoint
3002      - updated AD_SOURCE, generated .flow
3003      - added CD_CODE_VARS.h to the_main_loop
3004      - Moving cd_code specific store dir.s to pkg/cd_code
3005    o ctrl package totally restructured
3006      - pack/unpack now optional and decoupled from
3007        xx_/adxx_ I/O
3008      - ctrl_pack/unpack cleaned
3009        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
3010      - confined inclusion of AD_CONFIG.h to where necessary.
3011    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
3012    
3013    checkpoint51p_post
3014    o create initial cd_code package
3015      - WARNING: the initialization of fields within packages
3016        is broken because INI_FIELDS (where READ_CHECKPOINT is
3017        called) is called *before* PACKAGES_INIT_VARIABLES.
3018        This seems to be backwards since
3019        1) its important to initially zero the entire field including
3020           the "halo" region
3021        2) zeroing needs to be done *before* reading pickup info
3022           and the pickup call might or might not happen in any
3023           particular run
3024      - this needs an overhaul for R2
3025    o cleanup verification/*/code/GMREDI_OPTIONS.h
3026    o cleanup testreport
3027    
3028    checkpoint51o_post
3029    o bringing AD-related verif's up to date with genmake2
3030      - carbon/
3031      - global_ocean.90x40x15/
3032      - hs.94.1x64x5/
3033      - (front_relax/ )
3034    o (more) consistent directory structure for AD-related verif.'s
3035    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
3036    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
3037    o bug fix in find_alpha.F for MDJWF:
3038      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
3039        change rho -> rho-rhoConst
3040      - replace call find_rho to find_rhonum
3041    o initialisation of rFlx extended to full array (required by TAF)
3042      and shifted to thermodynamics
3043    o removed PTRACERS.h in ptracers routine
3044    o added surfacetendencyPtr to S/R parameter list pracers_forcing
3045    o Correcting initialisations for fVerU, fVerV.
3046    o helping TAF to recognize dependency on kUp for
3047      fVerU, fVerV
3048    o Replacing delZ by delR in pkg/ctrl/
3049    checkpoint51o_pre
3050    
3051    o undid all of cp51 pending some cleanups and discussion
3052    o added the [#include "AD_CONFIG.h"] statement to all files that need
3053       it for adjoint/tl #defines
3054     o re-worked the build logic in genmake2 to support AD_CONFIG.h
3055     o removed tools/genmake since it no longer works
3056    
3057  checkpoint51n_post  checkpoint51n_post
3058  o modifications to make FREEZE flux visible to pkg/kpp  o modifications to make FREEZE flux visible to pkg/kpp

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