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revision 1.76 by jmc, Fri Jul 12 14:52:08 2002 UTC revision 1.1115 by mlosch, Tue Jun 2 15:01:00 2009 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/obcs/exf
8      - obcs_precribe_read.F: change if statements so that they match
9                              the variable type (_RL)
10      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
11        exf_iprec) as part of namelist EXF_NML_01
12    o pkg/mdsio:
13      - read/write tiled (local) files: read/write 1-level tile chunk at a time
14        (instead of segment of length sNx); expected to speed up tiled IO.
15    o pkg/exch2:
16      - take buffer copy from/to array out of S/R exch2_send/recv into new
17        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
18        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
19      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
20      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
21        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
22        including Topology header file (and common blocks).
23      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
24        remove 2nd exch call in exch2_s3d_rx (no longer needed).
25      - document S/R arg. list (+ update some comments)
26    o pkg/seaice:
27      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
28        of LSR (this change is expected to change the results slightly because now
29        it uses slightly difference moduli from the second last LSR solution, but
30        that is more consistent with the stress computations; this part of the code
31        is not tested in the verification experiments)
32      - fix diagnostics for flux of ice in case of B-grid
33      - turn strain rates eij and press into global fields within global
34        common block in SEAICE.h for more straighforward diagnostics
35      - fix diagnostics for principal stress components, press, zeta, eta
36        to give something meaning full
37    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
38      new output (all 4 tests) using default rotationPeriod.
39    o pkg KPP:
40      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
41      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
42        and normal grid from 1 to Nr)
43    o Fix computations of L4rdt in mom_calc_visc.F
44    o eesupp:
45      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
46      should be called before a "stop" if we know that all process are going
47      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
48    
49    checkpoint61o
50    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
51    o model/src/ini_curvilinear_grid.F:
52       compute angleSin/CosC when they are not read from a file
53    o pkg/seaice:
54       add pseudo time stepping for LSOR
55    o pkg/exch2:
56       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
57    o pkg/seaice:
58       Adding separate sea ice albedo, drag coefficients, and HO in Southern
59       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
60    o SingleCpuIO:
61       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
62    o pkg/seaice:
63       put exchanged variable in (local) common block for MPI+Multi-Threads
64       to work (necessary with exch1, and for now with exch2 too).
65    o verification: to get more experiments tested with mpi, mth and mpi+mth,
66      change tiling of:
67       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
68       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
69      update output of exp:
70       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
71       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
72      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
73                       (note: output.txt generated on faulks using only 1 tile)
74    o eesupp & mdsio (SingleCpuIO):
75     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
76       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
77       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
78     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
79     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
80       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
81    o pkg/exch2:
82     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
83       read parameter file "data.exch2" if it exists; otherwise try default regular
84       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
85     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
86       with new code (not to be used, just as a backup solution).
87     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
88       in utils/exch2/input.
89    
90    checkpoint61n
91    o eesupp & mdsio (SingleCpuIO):
92      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
93        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
94        receive real*4 array (instead of real*8) to read/write 32.bit files.
95        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
96         and remove new mapping S/R)
97    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
98      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
99        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
100        when using exch2. Add S/R to map global io-buffer to global model array.
101      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
102    
103    checkpoint61m
104    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
105      and add 3 other S/R for other types (R4,R8,RS).
106      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
107    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
108     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
109     - reduce number of macro definitions (keep only those which are used);
110       can always call directly the corrresponding S/R if needed.
111     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
112       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
113     Fixed wrong type of arg in:
114       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
115       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
116     To fix: global_sum of var in common block is wrong (multi-threaded) in:
117       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
118     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
119    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
120      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
121    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
122    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
123      edges are closed (zero depth); might happen with "blank tiles";
124      for now, disabled if using OBCS.
125    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
126      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
127    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
128      to reduce length of 1.D array print in STDOUT.
129    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
130      + use 48 tiles (16x8): this will allow to test "blank tiles".
131    o start to test MPI + multi-threaded (change testreport to skip tests
132      where number of tiles do not match).
133    o genmake2: add option "-omp" to turn on Open-MP ;
134      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
135    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
136      and keep the original tile numbering. Note: compatible with old
137      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
138    
139    checkpoint61l
140    o Overlaps had been forgotten in calculating ijk keys : fixed
141    o fix cyrus makedepend for gcc 4.4
142    o experiment fizhi-cs-aqualev20:
143      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
144      and generate new output. Note: new output is much closer to the old
145      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
146      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
147    o pkg/fizhi:
148     - change to avoid indices going deliberately over array-bounds
149     - remove unnecessary MPI stuff
150     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
151     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
152       does not go over array-bounds and therefore returns reliable output.
153     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
154       this S/R has 4 output arguments, which are used inside "get_alarm";
155       when it is called with the same variable "ndum" in place of several
156       output arguments, this produces weird side effect inside "get_alarm"
157      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
158       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
159       address) and produces error.
160    o tools/gemake2: (March 27-29 2009)
161      with option "-mpi": link *_mpi files from "MODS" dir (this is what
162      testreport does).
163    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
164    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
165       update lab_sea.lsr & lab_sea.salt_plume results
166    o pkg/seaice:
167      Major overhaul of the LSOR solver: change discretization from original
168      finite differences to finite volume. The old routine is still in the
169      file seaice_lsr.F and can be turned on with the CPP-flag
170      SEAICE_OLD_AND_BAD_DISCRETIZATION
171      Along with this change, the discretization of the strain rates is changed.
172      The same flag turns on the old discretization in seaice_calc_strainrates.F
173      All verification experiments with seaice are affected (except for
174      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
175      results by setting the above flag.
176      Further changes involve changes in defaults:
177      - ALLOW_FLOODING is defined and turned on by default
178      - SEAICEadvSnow = .true. is now the default
179      - SEAICEadvSalt = .true. is now the default
180      - SEAICEadvAge  = .true. is now the default
181      - SEAICE_clipVelocities  = .false. is now the default
182                                         (as per J. Zhang's recommendation)
183      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
184        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
185      - seaice_growth: replace computation of UG by a simple copy from wspeed
186    
187    checkpoint61k
188    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
189      seaice_lsr: fixed a few metric terms,
190                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
191                  add more debugging diagnostics
192      seaice_evp: removed superfluous many metric terms of FV discretization
193                  of stress divergence
194                  affects lab_sea, lab_sea.hb87
195      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
196                  of stress divergence for non-evp solver
197                  (this part is not tested anywhere)
198      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
199                  they were effectively only half slip
200                  affects lab_sea.hb87
201      updated all relevant verification experiments (except lab_sea//output_adm.txt
202        which was left over, but fails at level 7 & 6)
203    
204    checkpoint61j
205    o pkg/seaice: turn a few hard wired parameters into run time parameters
206    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
207      time in seconds as promised by the usints in seaice_monitor and exf_monitor
208    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
209      that are not cubed-sphere grids
210    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
211    o pkg/ctrl:
212      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
213    o non-hydrostatic (calc_gw.F):
214      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
215      update output of exp. global_ocean.cs32x15.viscA4
216    o remove backward compatibility for thetaMin,phiMin
217      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
218    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
219      interpolated wind field not only for curvilineargrid=.true., but also
220      for a rotated grid (rotateGrid=.true.)
221    o pkg/exf: add capability to bypass interpolation for runoff
222      by setting yet another CPP-flag
223    o eesupp/src, B-grid exchange:
224      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
225    o autodiff
226      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
227      allows to switch to single-prec common blocks;
228      corresponding switch occurs in tamc.h, integer isbyte
229      TAF store directivs "byte" and "kind" seem equivalent;
230      Most tamc.h have been updated correspondingly.
231    
232    checkpoint61i
233    o autodiff:
234      fix autodiff_sore/_restore indices for obcs
235      (spotted by I. Hoteit, M. Mazloff)
236    o pkg/autodiff, pkg/ctrl:
237      Add flag to reduce all tapelev I/O to single-prec.
238      In data.ctrl set
239        doSinglePrecTapelev = .TRUE.
240    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
241      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
242    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
243      real fresh water flux (not yet)
244    o pkg/mdsio & rw:
245     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
246     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
247    o pkg/flt:
248     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
249       init_fixed & ini_varia.
250     - clean-up & simplify linear interpolation S/R:
251       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
252     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
253     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
254     - add vert. coordinate & horiz. indices to output files.
255     - change vertical position in initial condition, from index to depth [m].
256     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
257       (easier to get to a curvilinear grid) ; delX,delY no longer used.
258    o pkg/ggl90: a few modifications:
259     - fix bottom boundary condition, and interpolation of KappaE
260       near top and bottom
261     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
262     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
263     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
264    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
265      (maintain temporary backward compatibility, until next checkpoint)
266    
267    checkpoint61h
268    o pkg/diagnostics with "periodic averaging diagnostics":
269      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
270    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
271    o pkg/obcs: fix loop ranges for balancing code
272    o pkg/flt:
273     - improve criteria for finding which tile owns a float.
274     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
275    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
276      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
277      with ocean biogeo)
278    o pkg/flt:
279     - do some cleaning and fix the restart ;
280     - add output.txt in flt_example/results to get this pkg tested.
281    o genmake2: add an EXTENDED_SRC option and flag.
282       for now, cannot be turned on on command line (only through genmake_local)
283    o pkg/mdsio: read/write vector:
284     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
285     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
286       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
287     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
288      (drop to 4 digits matching for grad). But this test does not look very
289      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
290    
291    checkpoint61g
292    o pkg/flt:
293      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
294       + make OPTIONS file more standard.
295      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
296      - fix _BYTESWAPIO CPP-Flag
297      - standard reading of file-parameter "data.flt"
298      - fix argument list of S/R FLT_RESTART
299      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
300    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
301    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
302      a still unfixed compiler/optimization bug
303    
304    checkpoint61f
305    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
306      update results of global_ocean.cs32x15.icedyn test.
307    o move getcon.F from model/src to pkg/fizhi.
308    o pkg/exf: add parameter for extrapolation of temp up to the surface
309       and option to prevent negative evap (in bulk_largeyeager04 only).
310    o Prather Advection scheme: fix tracer conservation for divergent flow
311      (e.g., when using NonLin Free-Surface).
312    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
313    o gmredi (Visbeck-variable-K):
314     - add more parameters to Visbeck-variable-K.
315     - use a 5 points average for dSigmaR in Visbeck-K calculation
316       (more "homogenous": same stencil and same weights as in dSigmaH)
317     - update output of ideal_2D_oce experiment.
318    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
319      (#undef REAL4_IS_SLOW)
320     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
321       coordinate variable
322     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
323       (surface forcing fields), removes some of the functionality
324     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
325     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
326       probably not all: copy _RS surface flux fields to RL field before
327       calling DIAGNOSTICS_FILL
328     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
329       real*4 (CALL EXCH_*_RS) versions.
330     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
331       (generate new output).
332    
333    checkpoint61e
334    o gmredi (Visbeck-variable-K):
335      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
336      - change computation of Visbeck-K where Slope > Smax :        
337        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
338        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
339    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
340      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
341    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
342    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
343      does not become too large (to avoid precision problems in implicit-diffusion
344      solver); update ideal_2D_oce output.
345    o pkg ggl90:
346      - in ggl90_cal.F: compute only one set of visc/diff, used to
347        step forward TKE/T/S/momentum
348      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
349        have Prandlt =1)
350    o gmredi (fm07):
351      - add lower limit on Transition layer thickness + lower limit on 1/lambda
352      - allow to set few more params from data.gmredi
353    o pkg ggl90:
354          - add missing sqrt(2) factor in computation of mixing length
355            scale in ggl90_calc.F
356            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
357    
358    checkpoint61d
359    o adjoint modifs
360      - adapt to new field rhoInSitu
361      - allow to revert from StoreDynVars2D, StoreDynVars3D
362        to individual fields
363        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
364    o store 3-D (in-situ) density in commom block (DYNVARS.h)
365     - save 1 rho computation.
366     - no longer modify T & S inland when using down_slope pkg.
367    o gad_som : allow to switch to SOM advection for T & S without corresponding
368      pickup files (using new S/R: MDS_CHECK4FILE).
369    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
370      (for useSingleCpuIO to work in multi-threaded)
371    o pkg/shelfice:
372     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
373       with SHELFICEtopoFile in data.shelfice
374     - move code for reading ice shelf topography and modifying hFacC into separate
375       subroutines of the shelfice package
376     - separate initialisation of "fixed" and "variable" variables
377     - kTopC is not (yet) replaced by kSurfC, although this is possible
378    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
379    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
380      and rename:
381      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
382      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
383    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
384    
385    checkpoint61c
386    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
387      to add mass source/sink of fluid in the interior (3-D generalisation
388      of oceanic real-fresh water flux).
389    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
390    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
391    o new pkg: down_slope
392      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
393      - presently, modify T & S inland (dwnslp_calc_rho.F).
394        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
395      - implementation for ocean in P-coords not tested.
396      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
397    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
398      (to facilitate conversion of oceanic pkg to p-coordinate).
399    o change FIND_RHO to FIND_RHO_2D :
400      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
401    o new pkg: cheapaml
402    
403    checkpoint61b
404    o exch2:
405      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
406      - no longer depend on the order sequence (N,S,E,W).
407      - 3rd exchange no longer needed (tested with 24 tiles).
408      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
409      - exch_UV_A-grid readily available (but not yet tested).
410      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
411      (both are no longer needed) in exch_uv: no effect in forward run; but
412       get truncation error differences with adjoint exch.
413    o exch2:
414     - change index-bounds storage (moved from target to local tile,
415       more intuitive this way) ; rename/remove some variables.
416     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
417    
418    checkpoint61a
419    o exch2/matlab-topology-generator:
420      fix bug in index bounds for N-S internal exchange (hard to tell if this
421      had any effect on the solution).
422    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
423      is exceeded
424    o testreport: modify syntax of awk, so that it works also with
425      awk, and not only with nawk and gawk
426    
427    checkpoint61
428    o autodiff
429      Change default for TAF usage by removing argument '-nonew_arg'
430      This changes TAF subroutine argument list (ordering of active var.)
431      Omission of this flag leads to incompatibility w.r.t. TAMC
432      To restore TAMC-compatibility, need following modifs:
433      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
434      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
435      Tested TAF version is 1.9.22
436      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
437    
438    checkpoint60
439    --->>> This is the last checkpoint for which generating the adjoint
440    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
441    --->>> by default.
442    --->>> Future checkpoints will ommit this flag by default.
443    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
444    o pkg/grdchk: Add gradient check to etan0 perturbations.
445    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
446    o pkg/autodiff: more flexibility in zeroadj.
447      model/src: modifying do_oceanic_phys.F accordingly.
448    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
449    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
450      special setup of gmredi for which the adjoint is stable
451      enough for parameter optimization.
452    o bridging the gap between eddy stress and GM.
453      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
454          along with a change in CPP option (now ALLOW_EDDYPSI).
455      -> when using GM w/ GM_AdvForm:
456          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
457          is applied either in the tracer Eq. or in momentum Eq.
458          depending on data.gmredi (intro. GM_InMomAsStress).
459      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
460      The key modifications are in model/src/taueddy_external_forcing.F
461      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
462    
463    checkpoint59r
464    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
465      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
466      fix option to read coriolis(@ cell-corner) from files with CS-grid.
467    o pkg/mnc: add some attributes to standard 1D-coordinate variables
468    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
469      mass points, when using mnc for output
470      - add runtime parameter (missing_value, missing_value_int) to override
471        default (which is the value of getcon('UNDEF'))
472    o pkg/mnc: prepare mnc for the actual use of missing values with the
473      diagnostics package: small fix in mnc_cw_readwrite.template and more
474      initialisation of never used fields
475      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
476      versions
477    o pkg/thsice/thsice_ini_vars.F added default initial values so that
478      thermodynamics sea ice solver does not blow up when some initial fields
479      are missing.
480    o move from external_forcing_surf.F to ini_forcing.F
481      the p-coord. hack consisting in using pLoad to set phi0surf ;
482      update output of tutorial_global_oce_in_p (affected @ truncation level).
483    o Freshen up a bit hs94.1x64x5, notably:
484      remove rotationPeriod and tRef=5*0. (adjoint only), and add
485      exactConserv=.TRUE.
486    o pkg/generic_advdiff:
487      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
488      applies to files where Temperature & Salinity 2nd Order moments are used.
489    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
490      this uses a dynamically allocated internal state data structure
491      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
492      and requires a fortran 90 compiler
493    
494    checkpoint59q
495    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
496       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
497    o Refresh tutorial_global_oce_biogeo, notably:
498      - change bathymetry (put back seamounts in ACC, use hFacs)
499      - change EOS (POLY3 --> JMD95Z)
500      - use Bryan-Lewis vertical diffusivity
501      - use multidimensional advection
502      - remove old virtual virtual in dic pkg, now done through ptracer pkg
503      - change a couple of parameters in dic pkg
504    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
505    o pkg/obcs: change default to OBCSfixTopo = .true.,
506      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
507      - replace "debugMode" with "debugLevel .GE. debLevB"
508    o implementation of TAF directives for gchem,cfc,dic
509    o remove "exp5" (replaced by tutorial_deep_convection).
510    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
511      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
512      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
513      --> changes results in exp4, seaice_obcs
514    o tutorial_deep_convection :
515      update the set-up and increase resolution and domain size ; start
516      from pseudo initial conditions = output at t=120mn in order to see
517      something happening when running testreport.
518    o pkg/seaice: add os7mp as an advection scheme
519                  add check for advection schemes
520                  add a flag for restoring T and S underneath sea ice
521    o pkg/my82: add netcdf-support and diagnostics
522    o thsice pkg:
523      - Now hsMax limits snow height by turning it into ice following
524        flooding scheme (and now conserving energy)
525      - Slight rewriting of the formula in thsice_calc_thick.F
526      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
527      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
528    
529    checkpoint59p
530    o gchem / dic / cfc :
531      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
532      - add new parameter files: "data.dic" & "data.cfc" ;
533      - various re-arrangement in initialisation & header file ;
534      - fix tutorial_global_oce_biogeo for multi-threaded test.
535    o pkg/dic: test for "pickup_dic" file when restarting ;
536      if no pickup-file, can restart with a re-initialised pH (same as it did
537      before) providing pickupStrictlyMatch is set to False.
538    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
539      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
540    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
541      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
542    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
543     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
544       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
545    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
546       scheme to use for vorticty-term ;
547     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
548       (with default selectVortScheme, return to original discretisation)
549     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
550    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
551    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
552      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
553      also fix diagnostics VISCAHW & VISCA4W.
554    
555    checkpoint59o
556    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
557    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
558      move a few statemens out the main loop into separate loops
559    o pkg/shelfice:
560      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
561        (kg/m^2/s), does not break tests, because in verification/isomip,
562        rhoConstFresh=rhoConst (by accident)
563      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
564      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
565        new file model/src/seawater.F, so that they are available for all pkgs.
566      - convert potential temperature into in-situ temperature. This changes the
567        isomip tests => update tests
568    o add a flag writePickupAtEnd (default=true) to be able to suppress
569      writing a pickup at the last timestep
570    o tools/mpack-1.6 :
571      - disable automake (not working) and autoconf (not needed).
572      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
573        also cleaner with much less compilation warnings.
574    o pkg/profiles:
575      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
576      (for "less than 32 characters name" compiler requirement)
577    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
578      conditions that have a different sampling frequency than S/T/U/V obcs
579    o pkg/diagnostics (stats-diags):
580      - fix global Min/Max in case 1 processor get only empty tiles
581    o genmake2: replace (4 times)
582         make genmake_tc_1.o >> genmake_warnings 2>&1
583      with
584         COMM="$CC $CFLAGS -c genmake_tc_1.c"
585         echo $COMM >> genmake_warnings
586         $COMM >> genmake_warnings 2>&1
587      to make genmake2 always see the value of CC as specified in the optfile.
588    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
589      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
590      - modify verification advect_cs test to test SOM-advection on CS-grid.
591    o pkg/ctrl:
592      - Rewrite of ctrl_map_ini_ecco.F,
593        introducing a generic routine (ctrl_map_ini_gen.F).
594      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
595    
596    checkpoint59n
597    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
598      number in dedicate array "hdiag":
599      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
600        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
601      - many small changes (integer format) for large number of diagnostics
602      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
603        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
604    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
605      usingSphericalGrid, this allows to define the rotated grid coordinates
606      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
607      geographical coordinates according to the inverse of the rotation defined
608      by the Euler angles, so that Coriolis parameter and online-interpolation by
609      exf works with the geographical coordinates on XC/YC/XG/YG.
610      Naturally, this feature does not work with all packages, so some
611      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
612      profiles), because there the coordinates are assumed to be regular
613      spherical grid coordinates.
614    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
615      - introduce isopycnal diffusion coefficient control.
616    o tools/adjoint_options:
617      - additional control vector components.
618    o pkg/mnc: have mnc create marginally meaning full coordinate variables
619      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
620    o pkg/mypackage:
621      - add example of read/write pickup for state-var ;
622      - add entry points to the main code for state-vars diags & write-pickup.
623    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
624      transitions for useExfYearlyFields
625      - add new subroutine that determines the file to read from for
626        use*YearlyFields = .TRUE. and .FALSE.
627      - add a verification experiment to global_with_exf that tests
628        useExfYearlyFields with USE_EXF_INTERPOLATION defined
629    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
630      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
631      subroutines (which could be generated from a template, because they are
632      almost identical), for now they are included in obcs_prescribe_read.F for
633      simplicity
634    o pkg/exf:
635      - add a little more diagnostic to exf_interp_read (in analogy to
636        mds_read_field, can be turned off with debugLevel < debugLevA=1)
637      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
638        ugly but fast by unrolling short inner loops, inserting a unroll=8
639        directive in routine lagran, and splitting a loop and making do while the
640        outermost loop (the latter requires the intoduction of index arrays)
641    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
642    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
643      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
644    o verification/seaice_obcs: updated for restart test and latest options
645    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
646      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
647      for now this is only available for the C-grid code and also within
648      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
649    
650    checkpoint59m
651    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
652      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
653    o gad_som : fix flux output (& diagnostics) to have same units as other  
654      advection scheme fluxes (was previously multiplied by deltaT).  
655    o added verification/seaice_obcs both to test seaice open boundaries
656      and to provide an example matlab scrpt for generating them
657    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
658    o pkg/salt_plume: clean up salt_plume_frac.F to
659      remove redundancy in PlumeMethod 1 and 4
660    o pkg/kpp: added saltplume diagnostics
661    o pkg/obcs and pkg/seaice:
662      - do not set uice and vice to zero when OB*icefile are unspecified
663      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
664      - moved seaice tracer obcs after call to seaice_growth
665    o pkg/salt_plume: added various options for salt plume depth
666      criterion and for vertical distribution of the salt
667    
668    checkpoint59l
669    o pkg/ptracers: new version of ptracers pickup:
670      read meta file and write only fields which are needed to restart.
671      ( same logic as main pickup file ; also using pickupStrictlyMatch )
672    o pkg/seaice:
673      - add timescale for melting due to warm mixed layer as a means of
674        setting SEAICE_availHeatFrac more conveniently
675      - add a CPP-flag/runtime parameter check for flooding algorithm
676      - reformulated availHeat in seaice_growth.F to be independent of AREA
677    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
678      unit changes
679    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
680    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
681      SX vector computer.
682    o pkg/seaice:
683      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
684        seaice forcing fields can now be read only through pkg/exf
685      - removed some unused halos
686    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
687    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
688      or U/VICE from U/VWIND before computing U/VSTRESS
689    
690    checkpoint59k
691    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
692      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
693    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
694      all experiments pass when compile with un-initialised var. checking option.
695    o added pkg/salt_plume
696    o script to test restart (for now, in MITgcm_contrib/jmc_script)
697    o pkg/seaice: new read/write pickup version.
698      read meta file and write only fields which are needed to restart.
699      ( same logic as main pickup file ; also using pickupStrictlyMatch )
700    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
701    o lab_sea.hb87: modify the domain & update output.hb87.txt :
702      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
703      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
704      process. Fixed here by closing the domain at the Northern boundary.
705    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
706    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
707      a set of consecutive levels in/from a 3-D array.
708    o pkg/ptracers:
709      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
710      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
711    
712    checkpoint59j
713    o in pkgs: dic, obcs, offline, rbcs:
714      standard way to compute coeff. for time interpolation between 2 time reccords
715      which retains full precision (& make results less dependent on compiler).
716      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
717    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
718      packages instead of reading ice cover and wind speed separately
719    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
720     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
721      to allow to compile customized code before the update)
722    o cleaning-up:
723      - fix CPP instruction syntax in pkg/obcs
724      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
725        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
726      - fix some threads issue in IO parts.
727    o pkg/dic:
728      - add tons of "_d 0" (--> much better testreports !)
729       and then update outputs of tutorial_global_oce_biogeo
730    o pkg/mom_fluxform:
731      add a special version of momentum advection intended to conserve momentum
732      next to a bathymetry step or a coastline edge. (default = off = #undef)
733    o new read/write pickup version:
734      - for now, only implemented for main (mdsio) pickup file.
735      - write out only what is needed to restart; merge pickup_nh , pickup_ph
736        and main pickup together.
737      - read meta file; read only what is needed to restart; stop if a field
738        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
739        if it make sense (even if the restart is not perfect).
740      - if no meta file, assume that pickup to read corresponds exactly to
741        a pickup that would currently be written.
742      - read pickup written in the old format (until checkpoint59i) if it
743        recognizes an old meta file (no field-list).
744      - add a meta file in exp. which starts from a pickup: 2 cases:
745        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
746         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
747        b) a meta file describing the content of the associated pickup file
748         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
749    o pkg/mdsio & pkg/rw:
750      - new routine to read a meta file ; new set of routine to read
751        Multiple-fields file (with meta file).
752    o added open boundary conditions capability for seaice
753        HSNOW, HSALT, UICE, and VICE
754    
755    checkpoint59i
756    o adjoint:
757      * fix multiDimAdvection adjoint
758        (partial recomputation problem by TAF for fVerT(:,:,kDown)
759        and comlev1 size definition (maxpass vs. max. number of tracers)
760      * verification/global_ocean.90x45x15 adjoint now tests
761        NLFS and multiDimAdvection using DST3 (=30)
762      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
763    o pkg/kpp: add "_d 0" to real constant (if missing);
764      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
765      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
766    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
767      for internal parameters related to restart process (formerly from PARAMS.h)
768      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
769    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
770      as argument. (only atm2d & obcs write_pickup have not yet been updated)
771    o pkg/monitor:
772      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
773      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
774      - account for deep Atmosphere factor and density factor (anelastic)
775    o added open boundary conditions capability for seaice HEFF and AREA
776    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
777      thermodynamics
778      - requires a little reorganization, which affects the testreport results
779        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
780        so that now the conservative form is tested
781      - add a few comments
782    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
783    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
784    o add new diagnostics to seaice: advective, diffusive fluxes (only for
785      multidim-advection, for scheme 2 they are not filled) and transports,
786      thermodynamic growth rates
787    o change units of EmPmR (inside the code, + within coupling interface)
788      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
789      Affects results @ truncation level (cg2d match) and update output of
790       experiments: lab_sea(6), global_ocean.90x40x15(10),
791      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
792      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
793      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
794      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
795    
796    checkpoint59h
797    o pkg/exf:
798      - improve vectorization by moving if-statement out of loops in
799        exf_mapfields, exf_radiation
800      - exf_bulkformulae.F: introduce 2D fields and vectorize code
801    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
802    o testreport:
803      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
804        monitor & update offline_exf_seaice exp. output.
805      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
806    o pkg/seaice:
807      - bug fix in the evp solver: boundary conditions were affected be
808        masking of zMax/zMin (changes results)
809      - minor bug fix in boundary conditions in seaice_calc_strainrates
810        (changes results for no_slip)
811      - seaice_lsr.F: make interpolation of eta dependent on boundaries
812      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
813      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
814        stress formulation and no-slip boundary conditions
815    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
816      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
817    o pkg/seaice: a first HSALT time stepping equation has been checked in
818    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
819      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
820      without requiring DO-IF statements
821    o pkg/thsice:
822      use continuous power-law function for partition of energy between lateral
823      melting/freezing and thinning/thickening ; old code using step function
824      still available with #undef THSICE_FRACEN_POWERLAW
825      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
826    o testreport: change AD testing : check against results/output_adm.txt
827      using same scripts as for forward test.
828    
829    checkpoint59g
830    o adjoint testing: in preparation for changing testreport:
831      - output format: cost and grad written on separated lines
832      - ad output results in directory "results" (instead of "results_ad")
833    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
834    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
835    o pkg/ecco: allow user defined cost function contributions
836    o testreport:
837      Allow to choose (per experiment) the list of tested output variables
838       and the main variable (used to issue a pass/FAIL ) ;
839      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
840      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
841      Also modify printing of summary:
842       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
843       b) echo the list of tested variables in the individual summary.txt of
844          each experiment.
845    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
846      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
847      (but still depend on the tile decompostion of the domain).
848    o pkg/seaice: change a discretization detail to make the B-grid code
849      "more symmetric". This change is likely to remove all "ridges/leads" that
850      where quasi-aligned with the grid in B-grid solutions. It may also be
851      the solution to the stress coupling issues with the B-grid.
852    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
853      remove .cvsignore from input dir. (since testreport no longer run here).
854    o pkg/thsice:
855     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
856     - fix reshaping of sea-ice just after advection:
857       melt all the ice only if ice-volume is too small.
858     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
859       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
860     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
861    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
862      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
863    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
864      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
865      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
866      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
867      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
868      -> update output.txt
869    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
870     this affects truncation error: -> update output.txt of exp:
871      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
872      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
873    
874    checkpoint59f
875    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
876    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
877      a bounded range (in forward mode)
878    o pkg/ecco, ctrl, autodiff and mom_common:
879     internal parameter controls, completements of implementations
880    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
881    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
882      (not seem any difference in testing results).
883    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
884       at face corners.
885    o pkg/generic_advdiff:
886     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
887      loop range indices for computing vertical advection tendency
888      and do the calculation in the interior only (no overlap) ;
889      for now, only implemented for SOM advection (to save CPU time).
890     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
891    o exch2 adjoint
892      First set of changes:
893      - add exch2 hand-written adjoint templates
894      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
895        This will require cleanup in pkg/autodiff/*.F
896        (changed routines currently kept separate in verif. code/)
897      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
898        that used to hide exch2 or cubed-sphere specific code
899        (commented via 'cph-exch2')
900    o pkg/seaice
901      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
902    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
903       output of global_ocean.cs32x15.thsice .
904    
905    checkpoint59e
906    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
907      for B-grid vector (not yet tested) and C-grid vector (<- only used
908      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
909    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
910      (#ifdef ALLOW_SALT_PLUME)
911    o gather_2d/scatter_2d: removed halo regions
912    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
913      scheme and the corresponding test case (under front_relax dir). For now,
914      only available with Skew-flux form and not yet tested in realistic set-up.
915      adjoint: store directives updated, but gradient checks deteriorated,
916      so maybe GM/Redi adjoint is now broken.
917    o seaice adjoint
918      * add AREA, HEFF, HSNOW as control variable
919        (should not change lab_sea results)
920      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
921    o pkg/seaice:
922      * added computation of saltFlux in seaice_growth;
923        For time being, sea ice salinity is assumed constant
924        contribution of snow flooding to freshening of sea ice is neglected.
925        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
926        defaults to 0.0 in order to maintain backward compatibility.
927        Typical values for SEAICE_salinity are 4 to 10 g/kg.
928      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
929      * added SEAICE_availHeatFrac, which specifies fraction of surface level
930        heat content used to melt or grow ice
931      * commented out cap of HICE: it helps keep ice thinner
932      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
933      * applied OBCS T/S mask to HEFFM sea ice mask
934    
935    checkpoint59d
936    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
937     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
938     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
939    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
940     and change default value of parameter "GM_Small_Number";
941     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
942       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
943       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
944    o pkg/ecco: cost function when applying pkg/smooth to controls
945    o pkg/ctrl: add forcingPrecond run time parameter
946    o pkg/seaice:
947     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
948     - fix bug in metric terms of u-equation in LSR solver (implicit part),
949       changes verification/lab_sea
950     - rearrange implicit part of u-equation in LSR solver to make it easier to
951       read, understand, and debug. This causes changes at the truncation level.
952     - fix (serious) bug in the boundary conditions (sign error in the implicit
953       part) of the LSR solver. Changes all LSR results.
954     - fixed problem with HSNOW initialization to avoid thick snow when AREA
955       is initilized with small values - does not change lab_sea results.
956     - added HsnowFile initialization capability
957    o pkg/smooth: addition to model/src and pkg/ctrl so allow
958     initialization of pkg/smooth and application to control vector
959    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
960    o dependencies: pkg/profiles requires pkg/cal
961    o pkg/profiles:
962     - added option ALLOW_PROFILES_GENERICGRID
963         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
964         that interpolation information (grid points and coefficients) is provided
965         within the netcdf input files.
966         -> sample matlab scripts can be found in MITgcm_contrib/gael
967         that allow you to prepare netcdf input files.
968     - also modified: cleaner include statements, cleaner error print statements,
969       cleaner stops when error, and more tests of the netcdf input files consistency.
970    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
971    o pkg/seaice:
972     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
973       requires a new routine: seaice_diagnostics_fill.F
974     - make sure that seaice does not move if not forced (pressure replacement
975       method, Hibler and Ip, 1995), changes results
976     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
977     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
978       It is turned off by default (=-1.), because it changes the results.
979     - make it possible to read AREA from a file, too.
980    
981    checkpoint59c
982    o add S/R and diagnostics for oceanic mixed-layer depth
983    o move GMRedi call after all vertical mixing schemes (including KPP)
984    o pkg/thsice:
985     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
986      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
987    o pkg/obcs:
988     - bug fix for balance code
989    o pkg/seaice:
990      - allow values of SEAICE_elasticParm > 1
991      - add new parameter SEAICE_evpTauRelax as an alternative
992        to SEAICE_elasticParm
993      - make lsr boundary conditions free slip (by default), changes result
994      - add code for no slip boundary conditions for lsr
995      - set minimum of zeta to zero (and not 4e8) (changes results)
996      - add a cap on AREA after advecting AREA if seaice_growth is not called
997    o change calculation of Visbeck K:
998      - no longer depend on tapering scheme; instead, compute slope (limited
999        by GM_maxSlope). this is equivalent to what was comuted before with
1000        clipping or linear tappering.
1001      - fix vertical averaging (wrong by 1/2 level)
1002      - leave the old version (but will not be maintained) within
1003        #ifdef OLD_VISBECK_CALC / #endif
1004      - update output of exp. ideal_2D_oce
1005    o change error catch in calc_r_star to improve vectorization
1006    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1007      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1008    o adjoint:
1009      Re-organized adjoint checkpointing according to Matt Mazloff
1010      (but with modifs/completions/cleanups)
1011      Storing is now bundled into large arrays to optimized I/O
1012      (and second step in cleanup of the_main_loop)
1013    
1014    checkpoint59b
1015    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1016      - export/import (between ocean & coupler) fields needed for ocean DIC.
1017    o pkg/seaice:
1018      - get rid of three more exchanges seaice_calc_viscosities (required
1019        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1020      - bug fix in seaice_ocean_stress (update of lab_sea required)
1021      - reduce loop boundaries to necessary minimum also in seaice_evp
1022      - go back to the old way of computing deltaC/Z as the adjoint likes that
1023        better
1024    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1025      passive tracer to an Age Tracer) + update output.txt
1026    o pkg/exf:
1027      - implement A-grid / C-grid selection for wind-stress input files.
1028      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1029      for now, in exf_bulk_largeyeager04.F only :
1030      - change implementation for case where windspeed + 2. components wind-stress
1031        are read-in. AND use rhoConstFresh to convert evap.
1032    o pkg/seaice:
1033      - use correct EXCH_UV for wind-forcing (on A-grid).
1034      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1035        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1036    o pkg/exf:
1037      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1038      EXF_INTERPOLATION:
1039      - merge global_with_exf/code version of exf_interp_read.F
1040        to the main code ;
1041      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1042        reading the file ; Important: This options needs to be defined to recover
1043        previous code.
1044        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1045      - no longer loose real*8 precision along the way when using exf_iprec=64.
1046    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1047      - change discretisation of evp-solver in order to avoid another exchange
1048        (changes lab_sea) and clean up a little
1049      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1050        help the adjoint (this also changes the results slightly)
1051      - add a few "_d 0" where they had been missing in seaice_evp.F
1052      - cleaning up: remove unused seaice_calc_rhs.F
1053    o pkg/exf: some cleaning-up:
1054      - change various "constants" into runtime parameters
1055      - cleaned-up Large&Yeager04 routine which should eventually
1056        replace exf_bulkformulae.F (changed names of S/R and CPP)
1057        and merged various ALLOW_ATM_WIND options
1058     only used with thsice pkg (in thsice_get_exf.F):
1059      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1060        which are used when useStabilityFct_overIce=TRUE (= the default)
1061      - change default values of ice & snow emissivity and scale downward LW
1062        by ice & snow emissivity.
1063    o pkg/thsice:
1064     fix few little problems, in thsice_calc_thickn.F:
1065      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1066      - melt only laterally if hIce < hThinIce (as the comments say)
1067      and in thsice_extend.F:
1068      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1069      - start to form ice as soon as the minimum ice-volume is reachable.
1070     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1071      and cpl_aim+ocn
1072    o pkg/kpp
1073     - move computation of surface related input fields to KPP into a new
1074       subroutine kpp_forcing_surf.F
1075     - remove wrong (within bi,bj loops) EXCH calls.
1076     - little cleaning (add argument myThid in last position, cvs header ...)
1077     - for now, fix conservation problem by exchanging KPPviscAz (may not
1078       be the best fix)
1079    o pkg/seaice
1080     - check for inconsistent evp parameter/cpp-flag combination
1081     - remove leftover errIO flat for obsolete name list error handling
1082    o OpenAD
1083     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1084    
1085    checkpoint59a
1086    o pkg/seaice: some parameter clarifications and a little bit of clean up
1087    o pkg/thsice: rename run-time parameters:
1088       himin       -> hIceMin
1089       himin0      -> hThinIce
1090       hihig       -> hThickIce
1091       i0          -> i0swFrac
1092       transCoef   -> bMeltCoef
1093       frac_energy -> fracMelting
1094      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1095       with default values (for now) that do not change the results.
1096      remove old version of thsice vars advection in pkg/seaice.
1097    o in FFIELDS.h:
1098      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1099      - make pLoad & sIceLoad always available (but still only used if
1100         ATMOSPHERIC_LOADING is #define).
1101    o pkg/kpp: replaced _KPP_RL with _RL
1102    o bug fixes for vertical diffusivity computations when both KPP and
1103        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1104        are no longer updating the vertical diffusivity array
1105        (passed as argument) but are (re-) setting those arrays.
1106    o pkg/seaice: fix bug in evp solver, while doing that
1107      - change (improve?) discretization of stress computations for both
1108        cgrid-lsr and evp solver
1109      - add a new routine to compute strain rates
1110      - the above changes lab_sea results
1111      - add no slip conditions for evp solver (off by default), lsr-version
1112        may follow
1113      - fix exchange for shear at Z-points (does not change lab_sea)
1114      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1115        (to force the user to pick a time step since there is not "safe" way
1116        of choosing it)
1117      - add principal stress diagnostics
1118      - rearrange fields for evp a little to avoid having to call a: too many
1119        exchanges and b: exchanges for stress trensor components which we do
1120        not have.
1121      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1122        of evp, complete rewrite for lsr case (latter is does not yet work
1123        in all cases)
1124    o pkg/kpp: add code to have mixing in shelf ice caverns
1125      - add myThid to all kpp routines (long overdue)
1126    
1127    checkpoint59
1128    o pkg/exf:
1129      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1130        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1131      - move exf header files from lower_case.h to UPPER_CASE.h ;
1132        add missing cvs Header & Name
1133      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1134      - add namelist param. selectStressGridPosition, exf_monFreq
1135      - retire many _CLIM routines, and remove data.exf_clim
1136        + params moved to data.exf
1137        + climsst, climsss now handled by exf_set_gen, i.e.
1138          climss?period=0 refers to constant field,
1139          climss?period=-12 to monthly forcing
1140      - split up namelists in data.exf
1141    o pkg/seaice:
1142      - remove seaice_exch and seaice_exch_uv
1143      - remove superfluous exchange of theta
1144      - add myThid to seaice_budget_ocean/ice
1145      - add new interface for atmospheric wind forcing (C-grid only)
1146        + new routine
1147        + two new field (taux, tauy for stress over ice)
1148        + removed one global field (DAIRN) for C-grid case only
1149    o pkg/thsise
1150      - 2nd set of modifs for thsice adjoint in conjunction with exf
1151    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1152    
1153    checkpoint58y_post
1154    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1155      vertical diffusivity, similar to that in MOM4; turned on using
1156      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1157      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1158    o Added capability for 3D specification of background vertical diffusion
1159      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1160      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1161      "data" file that contains the 3D vertical diffusivity coefficients.
1162    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1163      - add code within pkg thsice to advect & diffuse sea-ice fields
1164      similar to (and will replace) what has been added in  seaice_advdiff.F,
1165      but: - conserving Mass, Heat & Salt.
1166           - better when using non-linear advection scheme (not yet fully tested)
1167           - can also be used in atmospheric set-up (for now, only the diffusion).
1168    
1169    checkpoint58x_post
1170    o IO option for global-file compact format:
1171      - add options when generating topology (utils/exch2/matlab-topology-generator)
1172      - add I/O capability (pkg/mdsio).
1173      - adapt utils/matlab/rdmds.m to read this format.
1174      for now long-line format not yet supported by pkg/mdsio (& exch2).
1175    o shelfice: add a few diagnostics
1176    
1177    checkpoint58w_post
1178    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1179      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1180      (and replace horiVertRatio in NH code).
1181      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1182                         and tutorial_plume_on_slope (sensitive to truncation)
1183    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1184      directly to drive seaice model (C-grid only)
1185    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1186     - reintroduce computation of wind from stress,
1187     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1188       mass points to avoid tau = 0
1189     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1190    o rdmnc.m: make it work with "global" files created with gluemnc
1191    o rdmnc.m : some improvements in dealing with singleton dimension
1192      (tested on all testreport mnc output files).
1193    o genmake2: disable pkg/profiles if netcdf test fails.
1194    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1195    o move call to cal_readparms up to make calendar parameters/variable available
1196      to all packages
1197    
1198    checkpoint58v_post
1199    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1200      useDynP_inEos_Zc tested.
1201    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1202    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1203      and portions thereof.  See read_cs.txt for description and examples.
1204    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1205      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1206      following the great-circle arc between those 2 points.
1207    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1208      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1209    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1210     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1211     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1212     - still needs work (not working with some options ; efficiency to improve)
1213       and serious testing.
1214     - use this scheme for temperature & salinity in 2 advection test exp.:
1215       advect_xy & advect_xz, respectively.
1216    
1217    checkpoint58u_post
1218    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1219    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1220    o testreport: add option "-skipdir" to skip some test.
1221    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1222      momentum calculation.
1223    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1224    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1225      remove checkpoint.F and the_correction_step.F (no longer used);
1226      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1227    o add option (linFSConserveTr) to correct for tracer source/sink due to
1228      Linear Free surface
1229    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1230    o pkg/thsice: fix reading mnc-pickups
1231    
1232    checkpoint58t_post
1233    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1234    o pkg/mdsio:
1235     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1236       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1237       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1238     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1239     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1240       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1241     - new S/R (to replace MDSWRITEMETA), which allows to write more
1242       informations (variable names, time ...) to meta files.
1243     - modify rdmds.m to give back the meta file content.
1244    o pkg/diagnostics: change vertical interpolation to be safer, and more
1245       flexible (define p-levels to interpolate to in data.diagnostics);
1246      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1247       diagnostic pointer.
1248    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1249    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1250    o fix multi-category seaice:
1251     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1252       SEAICE_MULTICATEGORY
1253     - fix short wave heat flux
1254    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1255       and allow to use EVP solver. Change forward lab_sea: test both EVP
1256       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1257    o Initial check-in of lab_sea adjoint
1258      (very similar to natl_box_adjoint/code_seaice)
1259      * used C-grid and EVP solver
1260      * used KPP, GM/Redi
1261      * uses inAdExact=.TRUE.
1262      * gradient checks fail for both ADM and TLM
1263        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1264        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1265        issue is related to forward mismatch between g77 an ifort
1266    o pkg/seaice: overhaul of thermodynamics
1267     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1268     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1269     - move a few global fields out of SEAICE.h into seaice_growth.F and
1270       make them 2D (FICE/QNETO/ ...)
1271     - remove FO (it is the same as QNETO)
1272     - introduce a few local fields to avoid modifying external fields such
1273       as atemp, etc.
1274    
1275    checkpoint58s_post
1276    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1277      changed exf_set_gen.F so that
1278        genperiod=0 means input file is one time-constant field and
1279        genperiod=-12 means input file contains 12 monthly means
1280    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1281      this affects truncation error ; generate new output file for exp. which
1282      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1283        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1284        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1285        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1286        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1287        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1288    o start implementation of deep-atmosphere and anelastic formulation
1289    o verification: remove 2nd copy of input files and use script "prepare_run"
1290      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1291    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1292    o profiles: fix for multithreaded case
1293    
1294    o diagnostics: rename few diags:
1295      s/'PRESSURE'/'RCENTER '/g
1296      s/'TICE    '/'oceFreez'/g
1297      s/'TAUX    '/'oceTAUX '/g
1298      s/'TAUY    '/'oceTAUY '/g
1299      s/'SWFLUX  '/'oceQsw  '/g
1300      s/DIFx/DFxE/g
1301      s/DIFy/DFyE/g
1302      and add few ocean-forcing diagnostics:
1303      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1304    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1305      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1306      as actual snow thickness.  It now refers everywhere to effective snow
1307      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1308    
1309    checkpoint58r_post
1310    o modifications to pkg/seaice/growth.F, which change results of
1311      lab_sea experiment: fixes pertain to melting snow over open water, to
1312      masking EVAP under sea ice, and to using the correct AREA variable for
1313      computations of EVAP, PRECIP, HSNOW, and GHEFF
1314    o add ability to read bathy, salt, and theta using MNC (off by def)
1315    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1316      both are turned off by default and do no change any results
1317    o seaice advection with pkg/thsice: a step toward the use of non-linear
1318      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1319    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1320      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1321      in natl_box (affects results @ truncation level: update output.txt)
1322    o multi-threading and IO:
1323      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1324      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1325        (needed to work with SingleCpuIO): tested in all verif. exp.
1326    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1327      affects the results (but none of the verification test uses this scheme).
1328    o Adding some pkg/diagnostics capability to pkg/seaice
1329      (will certainly be subject to changes)
1330    o ctrl: adding new control variables:
1331      lwflux, lwdown, evap, snowprecip, apressure, runoff
1332    
1333    checkpoint58q_post
1334    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1335      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1336      high_res_cube configuration by 4% on Columbia.
1337    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1338      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1339      dynamical allocation (seems to work in multi-threaded).
1340    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1341      single CPU io) so that TAF does not have to see EESUPPORT.h
1342    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1343    
1344    checkpoint58p_post
1345    o obcs: stop if obcs is used with useCDscheme = .true.
1346    o shelfice:
1347     - fix a sign error so that no slip at shelfice interface works
1348     - remove stop for combination non-hydrostatic code and shelfice. That does
1349       not mean, that the results are correct, but at least they are numerically
1350       stable
1351    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1352    o added adjoint exch routined for all exch*3d* routines
1353      and updated flow directives
1354    
1355    checkpoint58o_post
1356    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1357      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1358    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1359      and clean-up reading/writing of pickup files.
1360    o fix local version of read/write pickup (NH part) in rotating_tank/code
1361    o simplify EXCH interface:
1362     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1363     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1364    o added the regrid package
1365    o shelfice:
1366     - add a simple boundary layer scheme to reduce noise
1367     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1368    
1369    checkpoint58n_post
1370    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1371       local variable (not in common block).
1372    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1373      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1374      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1375        to work with SingleCpuIO.
1376    o add "_d 0" to real constant of pkg/cfc subroutines ;
1377       update exp. cfc_exemple & tutorial_cfc_offline output files.
1378    o multi-threading and IO:
1379      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1380        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1381      - barrier before and after reading.
1382      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1383      - avoid using MDS_WRITELOCAL for LAND pkg output.
1384      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1385        common-block variables ; Allows multi-threading with master-thread IO.
1386    o change default MAX_NO_THREADS from 32 to 4 ;
1387      and stop cleanly when MAX_NO_THREADS is too small.
1388    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1389    
1390    checkpoint58m_post
1391    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1392       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1393    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1394       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1395       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1396    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1397        add MITgcm_tutorials (= code + all the tutorials)
1398    o ecco, option to compute cost for total ssh (mean+anom)
1399    o consistent with addition of ptracer and ssh in pkg/profiles
1400    o profiles: adding ptracer and ssh
1401    o testreport: change multi-test output-file name
1402      (from output.txt.{name} to output.{name}.txt)
1403    o profiles: now ok for mutli-tiles case
1404    o seaice: add 4 parameters for different advection schemes for area,
1405      (effective) seaice thickness, enthalphy, and snow height. Their default
1406      is the standard parameter SEAICEadvScheme
1407    o calc_gw:
1408     - add cosFacU in zonal viscous flux (harmonic.visc.).
1409     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1410       of tutorial_plume_on_slope.
1411    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1412    o calc_gw: true flux-form, account for horizontal grid spacing.
1413      update rotating_tank results, but not plume_on_slope (affected at
1414      truncation level, 11 digits).
1415    
1416    checkpoint58l_post
1417    o calc_gw:
1418     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1419     - remove side-drag for now (need to fix it); update plume_on_slope results.
1420     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1421    o commit code to make SST/SSS weights spatially variable
1422      (based on either variable in-situ or variable initial T/S weights)
1423    o pkg/ecco:
1424      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1425        now based on horizontally varying weights wthetaLev, wsaltLev
1426      * cost_averagesflags now returns year indices in addition to day, month
1427      * sflux balance is performed on annual basis
1428        (sflxumm, sfluxmm2, bal_sfluxmm)
1429      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1430        including separate counting and multipliers
1431    o pkg/rbcs
1432      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1433    
1434    checkpoint58k_post
1435    o testreport:
1436     - always build in dir. "build" (if not there, mkdir build instead of building
1437       & running in input)
1438     - run in dir run (if it exists), in build otherwise.
1439     - call prepare_run (if input/prepare_run exists)
1440     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1441    o pkg/exf modifications to interpolation and rotation routines for more
1442       reasonable treatment of North Pole singularity: for tracers North Pole
1443       value is set to northernmost zonal-mean value, for zonal velocity it is
1444       set to zero, and for meridional velocity it is set to northernmost value.
1445    o pkg/exf/exf_check_range.F
1446     - add tile index to diagnostics and move stop statement to the very
1447       end of the routine.
1448    o pkg/diagnostics: (diagnostics_main_init.F)
1449      define title of isomorphic variables according to the current config.
1450    o pkg/thsice with pkg/seaice dynamics:
1451    - fix domain of computation (interior only, required for exf) and do exchanges
1452    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1453    o towards a standard way of dealing with multi-threading in MONITOR
1454      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1455    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1456       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1457    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1458    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1459    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1460       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1461    o tracer advection:
1462     - clean-up and simplify calc_common_factors.F
1463     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1464       advection subroutine (but still not used within DST advection S/R)
1465    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1466    
1467    checkpoint58j_post
1468    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1469      from file (collects calls previously in FORWARD_STEP)
1470    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1471    o adjoint store dir. adjusted accordingly
1472    o genmake2
1473      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1474    
1475    checkpoint58i_post
1476    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1477      on wind stress (SEAICEstressFactor defaults to 1.)
1478    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1479      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1480    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1481      on CS-grid: no longer loosing mass.
1482    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1483    o pkg/ggl90: fix sloppy output and fix a bug
1484    o pkg/seaice: added SEAICEuseEVPpickup parameter
1485      - Set to false in order to start EVP solver with
1486        non-EVP pickup files when using SEAICEuseEVP
1487      - fix sign error in diffusion in seaice_calc_rhs
1488    
1489    checkpoint58h_post
1490    * Modifications for bottom topography control
1491      o replace hFacC by _hFacC at various places
1492      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1493      o add non-self-adjoint cg2d_nsa
1494      o update autodiff support routines
1495      o re-initialise hfac after ctrl_depth_ini
1496      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1497    * Adding verification for 5x5 box (4-layer) bottom topography control
1498    
1499    checkpoint58g_post
1500    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1501       used for mean seasonal cycle, mean diurnal cycle); add an example
1502       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1503    o pkg/ggl90:
1504      - add parameter (minimum surface kinetic energy)
1505      - fix bug (avoiding division by zero)
1506    o couple pkg/thsice to pkg/seaice:
1507      - modify advection in seaice to accomodate new scalar fields to be advected
1508      - only muliDimAdection scheme work with seaice/thsice
1509      - mapping of thsice-variables to seaice-variables, back and forth
1510      - does not break the verification experiments, but does not give the
1511        desired results either
1512    o pkg/seaice
1513      - make (default) second order advection a bit less confusing?
1514    
1515    checkpoint58f_post
1516    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1517      to pkg/seaice):
1518      - new routines thsice_map_exf and thsice_get_exf provide the interface
1519      - add an additional formal parameter to thsice_solve4temp
1520    o pkg/exf:
1521      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1522      - correct Stefan-Boltzmann constant
1523      - new parameter for longwave surface emittance
1524      - separate some stuff from exf_bulkformulae into new routines  
1525        exf_radiation, exf_wind
1526      - add new parameters and constants: longwave emissivity for ocean, ice
1527        and snow, evaporation parameters over ice
1528      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1529        either wind from stress or stress from wind
1530    o pkg/thSIce:
1531    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1532    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1533       and THSICE_CALC_THICKN
1534    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1535    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1536      to make debugging easier.
1537    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1538    o pkg/bulk_force:
1539      - clean-up comments and parameters ;
1540      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1541    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1542      generate new output for test-experiment: aim.5l_cs.thSI
1543    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1544      testreport accordingly
1545    
1546    checkpoint58e_post
1547    o SEAICE_CGRID adjoint done
1548    o R_STAR adjoint implemented.
1549      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1550      * need to sort out init. of h0facc, etc.
1551    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1552      to be able to use it in pure forward.
1553    
1554    checkpoint58d_post
1555    o upgrade simple test-experiment to tutorial example:
1556     step.1: duplicate the experiment and (step.2) will remove the old copy.
1557      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1558      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1559      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1560      tutorial_global_oce_biogeo    <- copy of dic_example
1561      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1562      tutorial_plume_on_slope       <- copy of plume_on_slope
1563      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1564      tutorial_global_oce_optim     <- empty for now (David ?)
1565      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1566     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1567    o correct a sign problem in cost_scat.F
1568    o obcs and ptracers: fix boundary conditions for advections schemes
1569      with larger stencil
1570    o thsice adjoint: start
1571    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1572      completeness
1573    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1574      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1575    o ptracers adjoint:
1576      * avoid extensive recomputatations
1577      * fix missing re-init. of gptr (missed by TAF)
1578    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1579      me to turn off the excessive output to STDOUT that this package produces
1580    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1581      and add those terms in Vector-Invariant formulation.
1582    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1583      if the control period (xx_hfluxperiod etc) is 0
1584    o in profiles pkg, clean routines and fix details
1585    o in ecco pkg, reading ssh data:
1586      fix problem in case the model does not start at iter0=0
1587    o fix mnc-pickup/restart for ptracers
1588    o new package prifiles:
1589      code to compute profile-based cost by Gael Forget
1590      (modifs in ecco, ctrl, autodiff)
1591    o Benign bug fix in initialization (spotted by M. Mazloff) of
1592      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1593    
1594    checkpoint58c_post
1595    o adjoint: finish NLFS adjoint and provide reference output in
1596      verification/global_ocean.90x40x15/results_ad_nlfs
1597    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1598      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1599      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1600      with SEAICE_CGRID defined.
1601    o move calendarDumps from "data" to "data.cal" and clean-up the code
1602      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1603    o add useEXF & useCAL flags (for now, set in hard-coded way)
1604    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1605      (were missing in NH mode, and wrong in quasihydrostatic mode).
1606      waiting for Chris updated version of calc_gw to add those CALLs.
1607    o fix bug in quasihydrostatic S/R ;
1608      add a test for this option: global_ocean.90x40x15.qshyd
1609    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1610      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1611    o add on/off flag useOffLine for package OFFLINE
1612    o seaice:
1613      - modify advection so that it works also on the C-grid
1614      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1615        problem in multi-tile runs with C-grid
1616      - add flags for clipping ice velocities and/or masking solver forcing
1617      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1618        C-grid solver
1619      - added a few comments to seaice_diffusion.F
1620      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1621        are now exclusive)
1622      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1623        required re-ordering the code a little:
1624       + make DAIRN global variable (defined in SEAICE)
1625       + move computation of the viscosities eta and zeta into a new separate
1626         routine (because I need to recompute them in seaice_ocean_stress.F)
1627    
1628    checkpoint58b_post
1629    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1630      update output.txt of exp. aim.5l_cs.thSI
1631    o various mnc cleanups and improvements:
1632      + shrink lookup tables by factor of ~4
1633      + better error reporting when running out of lookup space
1634      + able to handle longer path/file names (up to 500 chars)
1635    o adjoint:
1636      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1637      - TBD: "hidden" mom_vecinv recomp. in dynamics
1638    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1639     (allow to differentiate between forcing components using new integer flags:
1640      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1641     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1642    o ecco
1643      - enable trend removal from SSH anomaly obs.
1644    o adjoint
1645      - a fix for PmEpR when #undef EXACT_CONSERV
1646      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1647      - try to fix "hidden" recomp. in forward_step for NLFS
1648        (NLFS seems broken sometimes after I checked it in)
1649    o seaice:
1650     - add c-grid version of the dynamic solver:
1651       + three new routines that are the c-grid substitute lsr, dynsolver
1652         and ostres
1653       + put a few fields that were local to dynsolver into global common
1654         blocks, so that I can move the computation of stresses etc into
1655         seaice_lsr (saves coding but may break the adjoint).
1656     - replace more hardwired parameters by runtime parameters
1657     - add ice masks that mask the rhs of the implicit solvers where there
1658       is no ice (commented out in seaice_dynsolver, because i am not sure
1659       if this works properly), eventually this should replace the clipping
1660       of ice velocities in seaice_dynsolver to +/-40cm/s.
1661    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1662      include it only where its needed
1663    o move balancing of fluxes before the call of external_forcing_surf
1664    o seaice:
1665      - correct units of turning angles (now they are really in degrees)
1666      - move computation of GWATX/Y out of main routine into dynsolver
1667      - initialize GWATX/Y in seaice_init
1668    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1669      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1670    o seaice: add runtime flags for turning angles (default to zero)
1671    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1672      and trend from exf forcing and ctrl control adjustments
1673    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1674      (since checkpoint57x_post)
1675    o change the default rotation period to 86164.s = the Earth rotation
1676    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1677      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1678    o seaice advection: add code for choosing between the default (2nd order
1679      central differences) and multiDim advection schemes provided by
1680      pkg/generic_advdiff
1681    o seaice:
1682      - removed all references to SEAICE_GRID.h fields from
1683        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1684        (cubed-sphere configuration will change a little)
1685      - grid computations in seaice_init are obsolete now.
1686      - cleaned up code a little so that is easier to read (hopefully).
1687      - added new (better?) discretizations of default advection and diffusion
1688        (turn on with SEAICEuseFluxForm)
1689      - replace 1 in 3d global fields by kSurface in growth.F
1690      
1691    checkpoint58a_post
1692    o seaice:
1693      - bug fix in advect.F
1694    o shelfice:
1695      - separate shelfice load anomaly from pload (breaks with time
1696        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1697        Its default is 0., but it may be computed more cleverly from (unknown)
1698        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1699        done offline. A good approximation of the pressure load anomaly is
1700        necessary to avoid large initial adjustment processes underneath
1701        deep-reaching shelfice.
1702      - small fix in ISOMIP shelfice_thermodynamics
1703      - add more sophisticated thermodynamics of Hellmer (1989), this is
1704        now the default
1705      - give a few constants more intuitive names
1706    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1707      if bulk formulae are used in long integration (especially EmPmR). Turn
1708      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1709      if balancePrintMean, the imbalance that is substracted is printed to
1710      STDOUT.
1711    o fix bug (typo) in obcs_apply_eta.F
1712    o add a new package shelfice which enables us to model the circulation
1713      underneath shelf-ice with draughts of hundreds of meters.
1714     - works
1715     - to do: + include improved thermodynamics
1716              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1717                instead of new field kTopC
1718              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1719                instead of new field R_shelfIce and new code in ini_depth.F
1720                and ini_mask_etc.F?
1721              + adjust vertical mixing schemes?
1722    o seaice pkg:
1723     - add a cpp-flag to include a simple formula for a salinity dependent
1724       freezing point of sea water at the surface
1725     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1726       meridional stresses are now different (and hopefully correct)
1727    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1728       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1729       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1730    o pkg/diagnostics: add options and parameters for regional-statistics
1731       diagnostics ; define regions by reading a region-mask from a file
1732       (might add other options later)
1733    o pkg/bulk_force:
1734     - add option and parameters to use AIM surface-flux formulae.
1735     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1736       others forcing fields (defined in PARM05, parameter file "data") are loaded
1737       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1738     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1739     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1740     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1741       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1742     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1743    
1744    checkpoint58
1745    o add "--embed-source" option to genmake2 which, when the supporting
1746      tools can be compiled (as determined by genmake2) will turn on the
1747      embed_files package which then embeds the entire MITgcm source code
1748      (*.[fFhc] + Makefile) used for the build within the executable
1749      - requested by CNH but off by default
1750      - adds a paltry <9MB to the mitgcmuv executable in most cases
1751      - only writes the output when useEMBEDSRC in eedata is true
1752    o clean up 3-dim. relaxation codes:
1753      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1754      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1755      * Thanks to Tom Haine for testing!
1756    
1757    checkpoint57z_post
1758    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1759      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1760    o fix the pickup behavior for obcs in combination with ptracers
1761    o fix a bug in ptracers_external_fields_load
1762    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1763      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1764    o transfered surface NH pressure to eta field (if exactConserv).
1765    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1766         and update lab_sea output.txt file.
1767    o completing 3-dim. relaxation code: additional term
1768         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1769      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1770      * At compile time, in "EXF_OPTIONS.h" set
1771          #define  ALLOW_CLIMTEMP_RELAXATION
1772          #define  ALLOW_CLIMSALT_RELAXATION
1773      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1774          tauThetaClimRelax3Dim = 15552000.0,
1775          tauSaltClimRelax3Dim  = 15552000.0,
1776      * 3 cases:
1777          1) Use a constant-in-time 3-dim. field
1778          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1779          3) Real-time relax. to time-evolving prescribed field
1780    o Adding Laplacian-type smoothness constraint on
1781      initial and boundary (forcing) controls (ic, bc)
1782      * enable at compile-time via
1783        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1784      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1785      * Absolute scale somewhat unclear so far
1786      * no area weighting was included since no other cost term does so far
1787    
1788    checkpoint57y_post
1789    First step for a NLFS adjoint
1790    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1791    o new init. routines for calc_r_star, calc_surf_dr
1792    o still need to deal with ini_masks_etc
1793    o testreport seemed happy
1794    checkpoint57y_pre
1795    
1796    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1797    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1798    o add new offset feature to offline pkg (plus minor cleanup)
1799    o cfc fixes for final year of integration
1800    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1801      be in GCHEM_OPTIONS).
1802    
1803    checkpoint57x_post
1804    o fix testreport Pb in multiple test experiment.
1805    o cleanup our namelist syntax in verification:
1806      - make it more F95 standards compliant (some work still needed)
1807      - allows the vast majority of our tests to work with gfortran
1808    o Non-Hydrostatic:
1809     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1810     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1811    o Allow to apply AB on T,S rather than on AB(gT,gS):
1812     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1813     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1814       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1815     - need a "clever" read_pickup to restart from the other AB formulation
1816    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1817    o remove some unused variables (reduces number of compiler warnings)
1818    o adjoint
1819      * Disable useVariableViscosity for adjoint for time being
1820        (there are a number of extensive recomputations)
1821      * Initialize certain variables needed for adjoint
1822    
1823    checkpoint57w_post
1824    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1825                 fix the singleCpuIO RS version of MDSWRITEFIELD
1826       and add a WARNING if using globalFiles=T with multi-processors.
1827    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1828      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1829    o tracer advection scheme:
1830      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1831       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1832       was not very convenient).
1833      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1834       (further tests needed for the implicit DST & Flux-Limiter schemes).
1835    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1836      and sRef for convenience, handy, when you want to initialize
1837      ptracers in a large domain with a constant non-zero value. Also,
1838      untangle ptracers_init.F a little.
1839    
1840    checkpoint57v_post
1841    o change dome exp. to use variable viscosity in side-drag terms.
1842    o remove all the files from the cfc_offline test since they are now
1843      incorporated into tutorial_cfc_offline which has been producing
1844      identical results for a few days of testing
1845    o add new parameter: sideDragFactor to enable half-slip-side BC
1846      and change side-drag S/R to use viscosity from mom_calc_visc
1847      (can switch back by setting sideDragFactor=0.); affects results at
1848      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1849       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1850    o vorticity & strain are now computed without masking, to account for
1851      no-slip-side BC in variable viscosity calculation ; mask is applied
1852      anyway later on, before computing advection/coriolis terms.
1853    o modify exp4 to test new obcs support for reading from external files
1854      and for passive tracers
1855    o fix behavior of ptracers_monitor when monitor output is written to a
1856      netcdf-file; still not independent of monitor.F (writes in the same
1857      file).
1858    o change default value of tRef (put a uniform, meaningful value for ocean
1859      & atmos) and initialize sRef (was missing, as Martin mentioned).
1860    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1861      to be proportional to enstrophy dissipation length.  Thus,
1862       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1863      This is now consistent with Smagorinsky and with the manual.
1864    
1865    checkpoint57u_post
1866    o OBCS and PTRACERS: add open boundary support for passive tracers
1867      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1868        OB-values from file; this is not different from the way theta and salinity
1869        are treated
1870      - however, Orlanski-radiation conditions are not supported, and the model
1871        will stop if you use pTracers and Orlanski at the same time.
1872      - beefed up the rountine obcs_external_fields_load: now only those open
1873        boundary values are overwritten with values from files for which there
1874        are really files, otherwise the OB-fields remain untouched. This makes
1875        it possible to use different OBs at different ends of the domain (as
1876        with EXF)
1877    o reduce number of exch calls in shap_filt (s2).
1878    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1879      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1880    
1881    checkpoint57t_post
1882    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1883    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1884      same truncation, independent of the face number: affects affects several
1885      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1886    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1887      note that biharmonic viscosity + no-slip was not tested in any experiment.
1888    o fix bug in non-linear free-surf side-drag ; generate new output for
1889      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1890    o make mnc honor the writeBinaryPrec flag for most kinds of output
1891    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1892    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1893      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1894    o add brackets in multi-terms sum to get same truncation, independent of
1895      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1896      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1897    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1898      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1899      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1900      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1901      Suggested values of viscosity parameters found in mom_calc_visc.
1902      Many new viscosity diagnostics available.
1903    
1904    checkpoint57s_post
1905    o Add clearing-house for viscosity calculations, mom_calc_visc and
1906      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1907      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1908      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1909      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1910      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1911      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1912      ViscAhStrain and viscAhTension are now retired.
1913    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1914    o In response to JMC's bug report, genmake2 now ignores any soft-links
1915      that it finds in the *current* directory when searching for files.
1916      Soft-links found in any other source directories will still work as
1917      they did before.
1918    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1919      a C routine to unlimit the stack size
1920    o mnc-ify pkg/aim snapshot vars
1921    o mnc-ify pkg/land as requested by Daniel
1922    o various changes to mnc including:
1923      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1924      - output can now be grouped so that all files within a group
1925          change the ITER portion of their names in lock-step together
1926      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1927          and works with both EXCH1 and EXCH2 (but needs more testing)
1928      - writing works for all verification test cases w/ g77 on Linux
1929    
1930    checkpoint57r_post
1931    o make MNC variable initialization happen earlier
1932    o add diagnostics for (almost) each term of the momentum Eq.
1933    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1934    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1935    o remove MINIMAL_TAVE_OUTPUT option ;
1936      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1937    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1938      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1939    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1940    o add time-dependent SST, SSS control
1941    o cost terms in ecco/ modularized (new cost_generic.F)
1942    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1943    o new infrastructure for seaice model vs. obs misfits in seaice/
1944      * driver from the_main_loop.F is seaice_cost_driver.F
1945      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1946      * gradient check in Exp. 6a of natl_box_adjoint/
1947    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1948      (see README file)
1949    
1950    checkpoint57q_post
1951    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1952    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1953      - bug was reported by Jean-Michel and Ian Fenty
1954    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1955      update exp. cpl_aim+ocn output.
1956    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1957      Needed for high-res. runs with large global files
1958      to be able to limit tapelev size
1959    o Changed some tests for adjoint:
1960      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1961      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1962      * global_ocean.90x40x15/ back to default 3-level checkpointing
1963    o Modifications to enable scripted COMMON to MODULE conversion
1964      * verification/OpenAD/code/ has necessary scripts and description;
1965      * converts, compiles and runs successfully;
1966    
1967    checkpoint57p_post
1968    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1969    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1970      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1971    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1972    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1973      (was already the case for dissipation with mom_vecinv,
1974       and also the case for grad.PhiHyd when staggered-timeStep)
1975      This will allow to put dissipation out-off the AB time-stepping.
1976     Unfortunately, affects truncation error. Update output of exp. that "fails"
1977      (cg2d matching number) and leave the others for later: front_relax(10),
1978      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1979      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1980    
1981    checkpoint57o_post
1982    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1983      (2) its ready to be documented during the 20050801 DocFest
1984    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1985      for ideal_2D_oce and lab_sea on linux_ia32_g77
1986    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1987      in global1x1_tot/code_seaice_adj to access indices 32, 33
1988      (worth another tag)
1989    
1990    checkpoint57n_post
1991    o adding precip control xx_precip 32
1992    o adding swflux control xx_swflux 33
1993    o Replacing 10 forcing penalty cost routines by 1 generic.
1994    o Implementing partitioning in time-mean and variable adjustment
1995      for atmos. state.
1996    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1997    o in natl_box_adjoint:
1998      * updated exp 1 to 10
1999        (but does not have time-mean vs. variable split results yet)
2000    o updated global1x1/*_seaice_adj/
2001      to incorporate latest changes
2002    o enable useSingleCpuIO for mdsio vector routines
2003      (applies in particular to tapelev I/O)
2004    o removed inefficient K-loop in all active_file*control*.F
2005    
2006    checkpoint57m_post
2007    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2008      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2009    o pkg/exch2: filling of face-corner halo regions is optional
2010      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2011    
2012    checkpoint57l_post
2013     tag before updating tutorials (pre-release-2)
2014    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2015       for output and interpolation of input fields onto model grid)
2016    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2017       Affects results of exp. rotating_tank ; update output.txt.
2018    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2019          and taking the square quantity and/or using a fraction-weight field.
2020    o fix aim_diagnostics_init.F mate numbers.
2021    o add mnc output capability to diagnostics/diagstat and update
2022      our cvsignore files for the ACSII output generated
2023    
2024    checkpoint57k_post
2025    o lab_sea now uses diagnostics package and provides a suite of
2026      new EXF diagnostics output.
2027    
2028    checkpoint57j_post
2029    o exf
2030      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2031        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2032        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2033      * extended diagnostics output
2034        - now includes all EXF variables
2035        - hs, hl moved to common block
2036        - separate S/R for diagnostics, called after ctrl vector is added
2037        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2038        - EXFqnet contains true Qnet (i.e. includes qsw)
2039      * updated verif. lab_sea, global_with_exf
2040      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2041        to ensure that diagnostics sees a true EXFqnet
2042    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2043    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2044      several times with different frequencies.
2045    o mnc-ify the thsice package as requested by Daniel Enderton
2046      - the monitor--MNC output needs work
2047      - many attributes need to be added (most are currently blank)
2048    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2049      - many attributes need to be added (most are currently blank)
2050    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2051    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2052    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2053      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2054         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2055    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2056     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2057    
2058    checkpoint57i_post
2059    o Diagnostics package was changed: diagnostic allocation is now deactivated
2060      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2061    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2062      add 1rst Order upwind vertical Shear.
2063    o add a quick fix for A/B checkpointing in OFFLINE mode
2064    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2065      end-run around the C/Fortran linking horror in eesup/src/timers.F
2066    o added pkg/runclock: allows user to terminate run based on wall clock
2067    o added non-hydrostatic scaling parameter: nh_am2
2068    o pkg/my82: futile attempt to make results compiler-independent by adding
2069      some "_d 0", etc. no effect.
2070    o for mnc output, fill the 'T' coordinate var with myTime and create a
2071      separate 'iter' variable for iteration count
2072    o pkg/diagnostics:
2073      add new capability: output of Global/Regional & per-level statistics ;
2074      tested against monitor output (including land & thSIce) on various exp.
2075    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2076    
2077    checkpoint57h_done
2078      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2079      data.diagnostics, data.gchem, data.ptracers) is done.
2080    
2081    o pkg/diagnostics: prepare for Global/Regional statistics.
2082      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2083    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2084      and rename it: DIFFERENT_MULTIPLE
2085    
2086    checkpoint57h_post
2087    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2088    o pkg/diagnostics: change output frequency, now in seconds (instead
2089      of Nb of iterations). This requires to change data.diagnostics.
2090    checkpoint57h_pre
2091    
2092    o in mnc, let the user create the output dir if both mnc_outdir_date
2093      and mnc_outdir_num are false
2094    o add fflags() to pkg/diagnostics which allows one to specify, on a
2095      per-file basis, the file precision [default behavior is unchanged]
2096    o added diagnostics to pkg/kpp, including computation of mixed layer
2097      depth based on a temperature/density criterion
2098    o updated verification/natl_box to test the new pkg/kpp diagnostics
2099    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2100    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2101    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2102      not mnc -- this mistake was found by JMC and is now corrected
2103    
2104    checkpoint57g_post
2105    o add Adams-Bashforth 3rd Order time stepping:
2106      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2107      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2108    checkpoint57g_pre
2109    
2110    o make lambda[Theta,Salt]ClimRelax spatially varying
2111      (default remains spatially uniform constant based on tau)
2112    o added new control variables
2113      * init. uVel, vVel, etanN
2114      * lambda[Theta,Salt]ClimRelax
2115    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2116      (suggested by G. Forget)
2117    
2118    checkpoint57f_post
2119    o add parameter "baseTime" = model base time = time at iteration zero
2120      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2121      account for baseTime shift
2122    o move Coriolis arrays from PARAMS.h to GRID.h
2123    checkpoint57f_pre
2124    
2125    o mnc-ifying the seaice package
2126    o introduced an alternative length scale calculation for use in the limiting
2127      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2128    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2129    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2130      as well as grad(vort3).  Made it compatible with both approximate form
2131      for the cubed sphere and full form of these gradients.  Added flag
2132      useFullLeith to select between approximate and full form.  
2133    o add "d0" in getcon.F to reduce differences between compilers/platforms
2134      update output.txt of exp. fizhi-gridalt-hs
2135    o change port_rand funtion to allow to set the seed.
2136    o fix obscure MNC bug involving conversion between reals and integers
2137      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2138        new version is now more standards-compliant
2139    o adjoint-related modifications
2140      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2141      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2142      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2143    
2144    checkpoint57e_post
2145    o Adding eddy stress controls a la Ferreira et al.
2146    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2147    
2148    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2149      update output.txt of exp. fizhi-gridalt-hs
2150    o add more "Z" dimensions and associated coordinate vars to MNC
2151    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2152    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2153      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2154      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2155      months and years.  Requires pkg/cal.
2156    o diagnostics: add pickup functionality
2157      - off by default for backwards compatibility
2158      - current version only uses MDSIO -- MNC will be added
2159    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2160    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2161    
2162    checkpoint57d_post
2163    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2164    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2165      output from the diagnostics package
2166    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2167    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2168      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2169    o add coordinate variables to the MNC output from the diagnostics package
2170    o change MNC-flags default value: true when useMNC=TRUE
2171    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2172      the ability (off by default) to read the grid information using MNC
2173    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2174    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2175    o do snap-shot diagnostics at the middle of the time-interval (instead of
2176      at the end).
2177    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2178      new test for AIM with thSIce + slab-ocean
2179    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2180    o move state variable diagnostics to the beginning of the time step ;
2181      (note: still needs some work specially for snap-shot diagnostics)
2182      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2183    
2184    checkpoint57c_post
2185    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2186    o generate new output.txt files on faulks with g77 & the new -ieee option
2187    checkpoint57c_pre
2188    
2189    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2190      update output.txt of exp. global_ocean.90x40x15
2191    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2192      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2193    o add saltFlux(+File) forcing capability with periodicExternalForcing
2194    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2195    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2196    o improvements for the MNC output from DIAGNOSTICS:
2197      - correct handling of the unlimitied dimension
2198      - all dims now have associated coordinate variables
2199      - variables located at U, V, and Corner ("Z") points are now written
2200        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2201        *all* data points are output
2202    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2203    o added pkg/seaice/seaice_monitor.F
2204    o mdsio_readfield.F can now read files visible only to master MPI process.
2205    o pkg/seaice: some test code for ice-modified ocean stress
2206    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2207      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2208      spurious negative numbers for precipitation and humidity.  Will cause
2209      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2210    o pkg/ctrl/
2211      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2212        May be enabled via doPackDiag
2213      *  introduce z-scaling of
2214         + gradient (doZscalePack) and
2215         + control (doZscaleUnpack)
2216    o pkg/mdsio/
2217      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2218      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2219    
2220    checkpoint57b_post
2221    o simplify options in diagnostics_fill arguments (remove weird combinations)
2222    o fix MNC coordinate variables so that they now contain per-face index
2223      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2224      general, EXCH2 grids are only aligned to a "local" coordinate system
2225    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2226    o Implement instantaneous output within pkg diagnostics:
2227      setting a negative frequency in data.diagnostics produces
2228     "snap-shot" output (as opposed to time-average if freq > 0)
2229    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2230      NOTE: change ptracer diagnostics name: use 2 characters to work with
2231            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2232    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2233      becomes the coordinate variable for the 'T' dimension
2234    o add CF-style coordinate variables to MNC
2235      - just a first cut:  numbers are meaningless on the cubesphere and
2236        missing along the T axis but otherwise it works!
2237    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2238    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2239    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2240      this is based directly on what the model compute, so that the content of
2241      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2242    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2243    o clean up build options files for SunOS, in particular
2244      - remove -traditional from xmakedepend
2245      - change -xarch=v9 to -xarch=native for f77
2246      - restore use of make (not gmake)
2247      - add CC=gcc if using g77
2248    o changes per discussion of AM, JMC, & EH3 today:
2249      - move redundant "grid" variables out of "state" -- in preparation of
2250        creating proper CF-style coordinate variables and in recognition
2251        that any/all grid variables can be easily copied (eg. w/NCO) from
2252        the grid files into any of the other NetCDF files
2253      - *always* output grid variables with MDSIO (this will eventually be
2254        changed)
2255      - output MNC grid file if useMNC is true
2256    o every instance of _END_MASTER() has been found and replaced with
2257      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2258      preprocessors
2259    o re-arrange diagnostics pkg initialisation:
2260     - allow each package to extend the available diagnostics list
2261     - add some checking and fix small problems (multi-threaded, ...)
2262     - new S/R diagnostics_fill (replace fill_diagnostics):
2263       look through the short list of active diag. (instead of the long list)
2264       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2265    
2266    checkpoint57a_post
2267    o this set of changes restores TAMC compatibility
2268      tested for global_ocean.90x40x15 adjoint on trough
2269      (what a pain)
2270    
2271    checkpoint57a_pre
2272    o some modifs in tools/build_options for sunos
2273    o call ctrl_pack for ctrl at end for optimcycle=0
2274    
2275    checkpoint57
2276    o add horizontal bi-harmonic viscosity for vertical velocity
2277      - new parameter viscA4W (defaults to viscA4)
2278      - affects only non-hydrostatic code
2279      - to be done: no-slip lateral boundary conditions
2280    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2281    o implement Implicit Vertical advection for pTracers
2282    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2283      (implemented also for implicit vertical diffusion & advection)
2284    o OBCS: extend application of tracer open boundary conditions
2285      to a strip beyond the boundary of width Olx/Oly
2286    o add call monitor to TAF set of required calls (flow directives)
2287      and include in natl_box_adjoint
2288    o untangle a few ifdefs related to cost, ctrl, autodiff
2289      untangel a few ALLOW_ECCO_OPTIMIZATION
2290    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2291      (theta2, salt2 in ecco_cost_weights)
2292    
2293    checkpoint56c_post
2294    o OBCS as control variables
2295      - update ctrl_ad_diff.list, obcs_ad_diff.list
2296      - remove balance of obcs controls from default
2297      - fix index bug nobcs in ctrl_init
2298      - fix dummy fields filen in ctrl_pack
2299      - add dummy weights for obcs
2300    o lsopt: comment out fort.94 output
2301    o optim:
2302      - remove unnecessary header files
2303      - adjusted namelists
2304      - add xerbla.F to Makefile
2305    o exf:
2306      - multiple modifications of exf_check_range
2307      - unit change in exf_init_runoff from [m/year] to [m/s]
2308    o mdsio:
2309      - i/o-vector change debugLevel from debLevA to debLevB
2310    
2311    checkpoint56b_post
2312    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2313      is called from DO_THE_MODEL_IO
2314      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2315      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2316      - clean up PTRACERS_WRITE_TIMEAVE a little
2317    o add another verification experiment that tests both the cfc-pkg and
2318      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2319      reactive tendencies treated inline with regular timestepping
2320    o testreport previously did a lousy job of comparing small numbers, so
2321      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2322      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2323      testreport.
2324    o ptracers_monitor: bug fix for MPI
2325    
2326    checkpoint56a_post
2327    o GCHEM: finish reorganizating the package
2328      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2329        (introduces another 3D-array for each passive tracer, but only if
2330        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2331        gchemTendency is not needed because the timestep is done separately)
2332      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2333      - GCHEM is now---more or less cleanly---separate from PTRACERS
2334      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2335        so clear to me how that should be done in a general way.
2336    o CFC: improve formatting of output in CFC_ATMOS
2337    o PTRACERS:
2338      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2339        that ALL experiments with ptracers enable can be checked. This makes
2340        GCHEM_MONITOR obsolete.
2341      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2342        monitorFreq
2343      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2344    o add PTRACERS (PTR0[1-5]) to testreport output
2345    o exf_check_range:
2346      * default changed to .TRUE.
2347      * will check values for niter0 if debLevA, every timestep if debLevB
2348      * STOP in exf_check_range if 'out of range'
2349      * range chosen generous to allow for potential extema
2350      TBD: a version with stricter range
2351           permitted range would be runtime parameters
2352    o GMredi:
2353      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2354      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2355      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2356    o GCHEM:
2357      - move call to GCHEM_FORCING_SEP, so that it is now called before
2358        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2359      - introduced a useGCHEM runtime flag and applied it everywhere.
2360      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2361        this flag is now only visible within GCHEM-pkg routines.
2362      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2363        be replaced by a 3D array that is computed before thermodynamics; for
2364        this, the tracer ID iTracer had to be included into the parameter list
2365        of ptracers_forcing
2366      - set up forward_step to call gchem_forcing, that will replace
2367        gchem_forcing_int in ptracers_forcing
2368      - cleaning up
2369    o small cleaning of exch2: remove files that are also in eesupp/src
2370    
2371    checkpoint56
2372    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2373    o mnc: cleanup "full" files--fixes out-of-memory problem
2374    o ECCO-GODAE
2375      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2376      * fully merged and updated from SIO code
2377        windstress sign change affects
2378        - exf_inscal_[u/v]stress
2379        - sign of xx_tau[u/v] adjustments
2380        - signs in cost_scat
2381      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2382      * natl_box_adjoint updated and compressed
2383      * 2-level checkpoint switch added
2384        (tested in EXP. 1 of natl_box_adjoint)
2385      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2386    o SVD
2387      * first complete, non-hacked version for SVD calculations
2388      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2389        performed via direct access files admtlm_vector.it????
2390        (via ctrl_[un]pack)
2391      * optimcycle is used for ARPACK iteration counter
2392        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2393      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2394        and add linear transforms where necessary
2395      * controls are initial/final SST, SSS (can be extended; need to check
2396        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2397    o mdsio: filename info to both stderr, stdout
2398    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2399      from sign change
2400    
2401    checkpoint55j_post
2402    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2403      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2404    o add consistent build directories and .cvsignore files to verification
2405    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2406    o make all subroutines 30 or less characters in length for certain older
2407      compilers to work (a thorough search only turns up two routines in
2408      pkg/ptracers)
2409    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2410      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2411    
2412    checkpoint55i_post
2413    o change arrays for total vertical diffusivity (2.D if explicit,
2414      3.D if implicit) ; each ptracer uses its own background value.
2415    o added mnc/NetCDF output capability to ocn_compon_interf
2416      - added bits to verification/cpl_aim+ocn so that it can run on
2417        ITRDA and other clusters without the mpirun "-wd" option
2418    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2419      configuration
2420    o give MNC the ability to create additional files rather than
2421      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2422      - the default is just less than 2GB which is a practical limit
2423        on many systems
2424    o Compute the non-local term using either KPP vertical diffusivity (=default)
2425       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2426    
2427    checkpoint55h_post
2428    o add verification test "vermix"
2429    o remove all the *_ioinc flags and replace with the single global
2430      outputTypesInclusive flag
2431    o allow to set a vertical profile of vertical diffusivity for T & S
2432    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2433    o useMNC moved from data.mnc to data.pkg
2434    
2435    checkpoint55g_post
2436    o Renaming carbon AD experiments to comply with testreport conventions
2437    o Updating adjoint of Held-Suarez hs94.1x64x5
2438    o Fixing directives for non-ECCO forward_step, after ECCO directives
2439      have been fixed to avoid recomp. of do_oceanic_phys
2440      Works well for global_ocean.90x40x15,
2441      but recomp. issue remains for carbon
2442    o Updating adjoint output for natl_box_adjoint after
2443      pkg/ecco has been modified (see taga c55d_post)
2444    
2445    checkpoint55f_post
2446    o rename to timeave_init_fixed
2447    
2448    checkpoint55e_post
2449    o some delicate re-shuffle of store directives to avoid one
2450      extra call of do_oceanic_physics
2451      affects ecco_the_main_loop.F, do_oceanic_physics.F
2452      checkpoint_lev1_directives.h
2453    o NB: this may break global_ocean adjoint temporarily,
2454      but it is clear how to fix it. Will do later, need this now.
2455    
2456    checkpoint55d_post
2457    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2458    o ecco_cost_weights is modified to 1x1 runs
2459    o modifs to allow observations to be read in as
2460      single file or yearly files
2461    o enable to read exf forcing fields as either
2462      single file or yearly files (flag useExfYearlyFields)
2463    checkpoint55d_pre
2464    
2465    o switch between 2-level and 3-level checkpointing
2466    o add ability of MNC to write local and "partial" (eg. 2D slices where
2467      the full 3D field is never actually stored) arrays to NetCDF files
2468      with the correct (that is, the complete multi-dimensional) set of
2469      array indicies
2470      - used in mom_vecinv() to write the diagFreq output
2471      - tested (demonstrated) in verification/aim.5l_cs
2472    o further mnc-ification
2473      - add verification/lab_sea to the list with mnc setups
2474      - fix undefined mnc v-names in cd_code
2475      - add kpp to mnc output (both snapshot and timeave)
2476    o non-hydrostatic code
2477      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2478        in calc_gw.F
2479      - defaults to viscAh
2480      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2481        friction or Leith) in non-hydrostatic mode, as long as there is
2482        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2483    o pkg/cost
2484      extend simple cost functions to treat time mean quantities
2485      (T,U,V) via cost_accumulate_state from cost_tile
2486    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2487        be 2 times larger than the minimum size the advection scheme requires.
2488        now get a perfect conservation of salt in advect_cs test-exp (updated)
2489    o GGL90 (Gaspar's TKE mixed layer)
2490      - add horizontal diffusion of TKE, requires exchanges in
2491        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2492        default. In OPA there is no horizontal diffusion of TKE but the
2493        mixing coefficients are computed from a horizontal average of TKE of
2494        6 points or so. I think that diffusion has a little more physical
2495        justification.
2496      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2497        was in vain)
2498      - mask tke-variable in ggl90_init
2499    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2500    o fix biharmonic diffusion on CS-grid.
2501    o more obcs stuff
2502      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2503        for reading boundary values. This routine is called from
2504        obcs_prescribe_read
2505      - updated obcs_check
2506      - changed sponge layer relaxation parameter units for days to seconds
2507      - turned off sponge layer by default
2508      - changed argument list of OBCS_CALC to myTime+deltaTclock
2509      - fixed about 35 bugs in obcs_external_fields_load
2510    
2511    checkpoint55c_post
2512    o obcs stuff
2513      - new runtime flags useOBCSprescribe, useOBCSbalance
2514      - re-arranged obcs_calc
2515      - moved exf_getobcs to obcs_prescibe_read
2516        obcs_prescibe_read is called after ORLANSKI stuff
2517        and independent of it (executable can contain all).
2518      - updated obcs_check
2519      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2520        These may be necessary only if tangential velocities are
2521        prescribed at OB, not sure, needs testing.
2522    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2523      which simplifies the calls and passes the ifc check-bounds test
2524    
2525    checkpoint55b_post
2526    o add a 2D scalar, Z location, exchange_2 routine.
2527    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2528      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2529      affects advect_cs results (for the wrong reason): update output.txt
2530    o use a more standard discretization for biharmonic viscosity ;
2531     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2532      affects results of dome set-up: update output.txt
2533    o fix gad_advection.F (CubedSphere part), back to version 1.23
2534    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2535    
2536    checkpoint55a_post
2537    o merged code to
2538      * prescribe/read time-dependent open boundaries
2539        (works in conjunction with exf, cal)
2540      * sponge layer code for open boundaries
2541      * each boundary N/S/E/W now has its own CPP option
2542        (healthy for the adjoint)
2543    
2544    checkpoint55
2545    o up-to-date adjoint of previous breaks
2546      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2547      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2548      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2549      - carbon: * remove tr1-related adjoint verification
2550                * add ptracer as control variable
2551    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2552      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2553    
2554    checkpoint54f_post
2555    o in verification/carbin/ remove experiment related to
2556      ALLOW_PASSIVE_TRACER (array tr1 etc)
2557      code_ad/ input_ad/ results_ad
2558    
2559    o add two new packages
2560      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2561        + subject to optimization (memory)
2562      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2563        + subject to reordering (many GOTOs in the original code)
2564        + so far opps is called for every (i,j) point, and then operates in
2565          the vertical; one may want to reorder the scheme in order operate in
2566          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2567          fields)
2568    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2569      - all verification tests compile and run with linux_ia32_g77
2570      - defaults are compatible with current input files--nothing
2571        should change if you were not previously using MNC
2572      - MNC output has been added in numerous places (eg. timeave)
2573        but there are still a few writes not yet do-able with MNC
2574        (this is in progress)
2575      - flags now allow for either/or/both use of MDSIO and MNC and
2576        documentation will soon follow
2577      - numerous small formatting cleanups for ProTeX
2578    o add version info (via BUILD_INFO.h) to MNC and stdout
2579    
2580    checkpoint54e_post
2581    o add two new packages
2582      - pp81 (Packanowski and Philander, 1981), Richardson number and
2583        stratification dependent mixing
2584      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2585      - these scheme operate in a similar manner as KPP (without ghat, of
2586        course), however there is only one diffusivity that is used for both
2587        temperature and salinity (and passive tracers)
2588    o add offline package
2589    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2590      provided by Stephanie Dutkiewicz
2591    o genmake2: add ability to search for C compilers and cleanup test output
2592      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2593    
2594    checkpoint54d_post
2595    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2596    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2597      leading to additional shift by 5 days each year of integration
2598       (i.e. leading to considerable offset over the years)
2599    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2600    o start with no AB and no initial filtering (staggerTimeStep):
2601      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2602    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2603      (external loading & cpl import/export stay in forward_step.F)
2604    o update coupling interface to work with new staggerTimeStep
2605    o change MDSIO ptracers_pickup.
2606    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2607    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2608    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2609    
2610    checkpoint54c_post
2611    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2612      this affects (truncation error) output.txt of test-exp:
2613       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2614    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2615    o change Qnet to always be the net heat flux, (+upward).
2616      affects (truncation error) output of natl_box exp.: updated
2617    o define the max number of passive tracers in PTRACERS_SIZE.h
2618    o start to test mnc routinely in exp0
2619    o add sea-ice loading (sIceLoad) as a new forcing field.
2620    
2621    checkpoint54b_post
2622    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2623       impressive on Altix and Opteron systems)
2624    o diagnostics can now write NetCDF files through the mnc package
2625    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2626    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2627    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2628      affects (truncation error) output of lab_sea & natl_box exp.: updated
2629    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2630    
2631    checkpoint54a_post
2632    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2633    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2634    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2635    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2636      + internal_wave (shift in writing cg2d_ini_res)
2637    checkpoint54a_pre
2638    
2639    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2640      - modified verification/lab_sea and natl_box_adjoint accordingly
2641    
2642    checkpoint54
2643    checkpoint53g_post
2644    o prepare splitting of thermodynamics: store convect.counter in common block
2645    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2646      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2647    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2648    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2649    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2650    o restore adjointability
2651    
2652    checkpoint53f_post
2653    o modifications that affect AIM experiment results (update output.txt):
2654      - no advection of S at top interface Nr (pkg/generic_advdiff)
2655      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2656    o AIM pkg:
2657      - include stability function into surf.Flux derivative relative to Tsurf
2658      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2659    
2660    checkpoint53e_post
2661    o merged cylindrical coord configuration
2662    o added rotating_tank experiment
2663    checkpoint53e_pre
2664    
2665    checkpoint53d_post
2666    o faulks upgraded: re-generate output.txt that have changed:
2667       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2668    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2669    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2670    o added Sadourny discretization of Coriolis
2671      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2672      - re-enabled use of omega3 (useAbsVorticity)
2673    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2674      vector-invariant equations
2675      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2676    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2677      hopefully without new bugs
2678      - still to do: biharmonic friction for non-hydrostatic w
2679    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2680    o regenerated output for global_ocean_ebm (using -ieee)
2681    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2682      of mom_common/
2683      - simple re-arrangement of instructions within computing loop
2684    checkpoint53d_pre
2685    
2686    checkpoint53c_post
2687    o new version of coupler for AIM+thSIce and Ocean models
2688     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2689     - land: change Evaporation of snow
2690     - aim with thSIce: fix bug in snow-precip.
2691    o changes to calc_gw.F
2692     - bug fix for w^2 term near the bottom boundary
2693     - (hopefully) improve the lateral slip boundary condtions for use with
2694        partial/looped cells
2695      - because the bug fix changes two verification experiments anyway (exp5
2696        and plume on slope), change the lateral boundary condition from half slip
2697        to the value of no_slip_sides
2698    o ebm package wasnt quite up to the parallel task. Fixed that.
2699    o Adjoint of EBM package + verification
2700      * TLM OK
2701      * ADM not sufficient accuracy yet (needs further testing)
2702    
2703    checkpoint53b_post
2704    o Commiting new energy balance model to repository
2705      * package is pkg/ebm
2706      * verif. is verification/global_ocean_ebm
2707      * references are in ebm_driver.F
2708    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2709    C        Global thermohaline circulation. Part I:
2710    C        Sensitivity to atmospheric moisture transport.
2711    C        J. Climate 12(1), 71-82
2712    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2713    C        Global thermohaline circulation. Part II:
2714    C        Sensitivity with interactive transport.
2715    C        J. Climate 12(1), 83-91
2716    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2717    C        Destabilization of the thermohaline circulation
2718    C        by atmospheric eddy transports.
2719    C        J. Climate 7(12), 1870-1882
2720    o Will need long integration testing.
2721    checkpoint53b_pre
2722    
2723    o created pkg/mom_common in preparation for variable viscosity code
2724    o renamed and split ini_mnc_io
2725    o pkg/land: only liquid water can diffuse or run-off
2726    o AIM using land: soil wetness availability account for snow
2727    o added printMapIncludesZeros to EEPARMS namelist
2728    
2729    checkpoint53a_post
2730    o restore TAMC compatiility for exf_constants.h
2731      (no usage of _d in .h)
2732    o Additional storing in KPP in an attempt to fix
2733      TAMC problem with adjoint of KPP code.
2734      (no success...)
2735      Identical code works fine with TAF.
2736    o Fixed verification/natl_box_adjoint experiments.
2737      Initial conditions for Experiments 4 and 5 are now
2738      set to "SEAICE_initialHEFF=0", which is more reasonable,
2739      and hence gives results closer to that of Experiment 2.
2740      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2741    
2742    checkpoint53
2743    o stable checkpoint with up to date adjoint
2744      TLM tests only run for 1st grdchk at the moment. Its unclear if
2745      this is a code problem or a problem with resetting code for g_
2746      variables that is being autogenerated wrong.
2747      Otherwise:
2748       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2749       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2750         are both still in chaos following their security messes.
2751    
2752    checkpoint52n_post
2753    o various build (mostly genmake2) changes including:
2754      - ability to build/run more easily within Cygwin and MacOS X
2755      - more complicated Makefiles with a stronger dependence on Gnu Make
2756    o pkg/seaice modifications
2757      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2758        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2759        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2760      - changed proxy for geostrophic velocity and updated
2761        verification/lab_sea/results/* accordingly
2762      - removed ADI dynamic solver from pkg/seaice
2763      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2764        they caused a segmentation fault under certain circumstances
2765      - removed unused field WATR
2766    o bug fix in exf-package:
2767      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2768         now reflect that.
2769    o small fixes in the cal-package:
2770      - set reference date to first of January for the 'model'-calendar
2771      - failing of cal_CheckDate in cal_FullDate now actually results in a
2772        warning
2773    o small modifications in exf-package to increase flexibility:
2774      - change climtempfreeze from a constant to a runtime parameter that
2775        is specified in data.exf_clim (default = -1.9)
2776      - introduce runtime parameter windstressmax (default = 2.0) that is
2777        specified in data.exf
2778    o fix in pkg/thsice:
2779      - update Evap (Tsf changes) to be consistent with Latent heat flux
2780      - maintain snow precipitation unchanged (even if Tsf >=0).
2781     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2782    
2783    checkpoint52m_post
2784    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2785      this does not change any of the results, because myIter=0 in swfrac always
2786      lead to jwtype=2 (the default anyway), but the call makes little sense
2787      as a default
2788    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2789    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2790      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2791    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2792    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2793    o extending useSingleCpuIO option to work with new exch2 I/O format
2794      - old-style, missing-tile I/O is still accessible by defining CPP
2795        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2796    o monitor package can write to NetCDF files and/or STDOUT
2797    o fix re-definition bug in MNC_GRID_INIT_ALL()
2798    o doc/api_reference added
2799      - a framework for building an API Reference Manual using all
2800        the "protex" comments embedded in the code
2801      - see pkg/generic_advdiff, pkg/mnc for examples
2802    o MNC:
2803      - make myThid the last argument for all subroutines
2804      - new default for the grid files: NO halos
2805      - add useMNC and other run-time flags
2806      - separate per-file-group handling of the unlimited dimension
2807      - early initialization of MNC w/ flags read at the eeboot stage
2808        and lookup tables set in initialize_fixed
2809      - write all MNC output to a freshly-created directory
2810    o thermodynamics sea-ice (thsice) is now tested with testreport.
2811    o test exp. advect_cs: use the standard cs32 grid ; update output.
2812    o Added functionality to grdchk:
2813      pick global i,j,k position (or nearest wet) where to perform check.
2814    
2815    checkpoint52l_post
2816    o new land formulation:
2817      a) use ground enthalpy as prognostic variable to ensure exact
2818         energy conservation.
2819      b) account for water temperature and for latent heat of freezing
2820         in all processes (rain, run-off, ground storage)
2821      c) compute surface and ground temperature implicitly.
2822    o aim_v23 modification for new land model:
2823      a) Treat separately land / ocean / sea-ice surface fluxes
2824         to allow implicit computation of land & sea-ice surface temp.
2825      b) add snow precipitation.
2826    checkpoint52l_pre
2827    
2828    o fix problem (when 1 tile is empty) in min/max monitor.
2829    o fix bug in timeAve (u,vZetatave in common block)
2830    o no restoring terms under ice for pkg/seaice
2831    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2832    o bug fix for pkg/seaice pickups
2833    o change MNC call locations and add coordinate attributes
2834    o mask vorticity at the corner ; affects global_ocean.cs output
2835    o fix ini_curvilinear_grid ; test CS experiments with mpi
2836    o aim.5l_cs: modify sea-ice fraction input file ; update output
2837    o exf: Adding simple range check routine for exf fields after read
2838    
2839    checkpoint52k_post
2840    o removed top-level directory "diags"
2841      - we migrated these functions to pkg/timeave a long time ago
2842    o fixed bug introduced in pkg/monitor
2843    o accuracy ctrlprec = 32 insuffient for gradient checks using
2844      averaged fields (I/O via cost_averages)
2845      -> use ctrl.h in active_file*.F to control I/O precision.
2846    o paramter list of CALL ADTHE_MAIN_LOOP
2847    o added initial do_the_model_io to ecco
2848    o set all ...Freq to zero after cost_final
2849      taveFreq, dumpFreq, pChkptFreq
2850    o MAIN and ECCO differentiability restored
2851    
2852    checkpoint52j_post
2853    o fix nchklev in tamc.h for global_ocean...
2854    o Bringing flow and store directives up-to-date
2855    o Really weird thing!
2856      call do_the_model_io from the_main_loop with parameters
2857      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2858      TAF places a faulty re-call of initialise_varia
2859      after cost_final call which should not be there!
2860    checkpoint52j_pre
2861    
2862    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2863      error messages
2864    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2865    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2866      debug output
2867    o modfied mdsio_writefield.F to handle non-global files under exch2
2868    o update AIM Cubed-Sphere exp (aim.5l_cs):
2869      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2870    o update AIM Equatorial Channel exp:
2871      use standard aim_v23 pkg and change the SST fields to be more realistic.
2872    o globalFile now works with exch2
2873    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2874      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2875    o limit timeave output for hi-res integrations
2876    
2877    checkpoint52i_post
2878    o removed CPP_EEOPTIONS.h from verification/*/code
2879    o updated the tiling for global_ocean_pressure
2880    checkpoint52i_pre
2881    
2882    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2883      the old pkg/aim).
2884    
2885    checkpoint52h_pre
2886    o shortened offending lines in exch2_send_rx?.template
2887    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2888    o genmake2: add build & execute test for NetCDF code
2889    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2890      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2891    o added useSingleCPUIO flag to monitor.F and mon_out.F
2892    o added temporary hack for sea-ice dynamics on the cube:
2893      metric terms are ignored and it is assumed that
2894      there is no sea-ice on cube faces 1, 2, 4, and 5.
2895    
2896    checkpoint52f_post
2897    o added exch2 cube routines to pkg/exch2
2898    o modified hs94.cs-32x32x5 to use it
2899    o added new grid files to hs94.cs-32x32x5
2900    checkpoint52f_pre
2901    
2902    checkpoint52e_post
2903    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2904      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2905    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2906      to work with implicit vertical advection and AB ;
2907    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2908    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2909     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2910    checkpoint52e_pre
2911    
2912    o fix bug in impldiff when Nr=1 or Nr=2.
2913    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2914    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2915    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2916      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2917    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2918    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2919    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2920    
2921    checkpoint52d_post
2922    o re-tiled many expts to allow comparison in multi-processor mode
2923      - updated output accordingly
2924      - changed hs94.128x64x5 to use intial T from file rather than use the
2925        random number generator
2926    o add infrastructure in model routines for fizhi and gridalt packages
2927    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2928    o changes to permit hi-res, cubed-sphere, configuration
2929      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2930      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2931      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2932        of surface winds for the cube
2933      (A verification experiment, based on global_ocean.cs32x15, but with
2934       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2935       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2936       complete with example surface forcing files and matlab scripts to look
2937       at the output and compare it with that of global_ocean.cs32x15.)
2938    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2939       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2940       to conform to the common rule.
2941    o check-in the first version of the coupler + interfaces for multi-components
2942       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2943       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2944       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2945       - ocean and atmos. share the same horizontal grid (no interpolation).
2946       - exchanges between component and coupler is done in forward_step
2947    o new verification experiment, cpl_aim+ocn:
2948       coupled ocean - AIM atmosphere on cs32 grid.
2949    
2950    checkpoint52d_pre
2951    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2952    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2953    
2954    checkpoint52c_post
2955    o Fixing OPTIONS files for use of exf:
2956      - ALLOW_ECCO not needed
2957      - ECCO_CPPOPTIONS.h should not be included from
2958        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2959        as has been the case in the past
2960      - All cal/exf related options are currently set in
2961        single header file. Should remain so until we
2962        agree on a consistent new policy.
2963    o Removed all CPP options for cal package.
2964      cal has no more CPP options.
2965    o modified STOREs in GAD_ADVECTION
2966    o corrected key comp. for passkey
2967    
2968    checkpoint52b_post
2969    o new version: "thsice" of thermodynamic sea-ice pkg:
2970     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2971     - modify fluxes but do not change theta directly;
2972     - light cleaning of bulk_force pkg (still needed with thsice).
2973     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2974       + output_thsice.txt to test thsice & bulk_force pkgs.
2975    o put back grid & coriolis monitor output.
2976    checkpoint52b_pre
2977    
2978    o call "do_the_model_io" at the beginning (=> dump initial state)
2979    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2980    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2981      (need info on NUMBER_OF_PTRACERS)
2982    o missing PTRACERS headers in some routines
2983    o default tamc.h in pkg/autodiff supposed to crash
2984      to ensure proper customization
2985    
2986    checkpoint52a_post
2987    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2988      - moved surfaceTendencyTice from pkg/seaice to main code
2989      - subroutine FREEZE_SURFACE now limits only surface temperature
2990        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2991        => new output.txt for global_ocean.cs32x15 & global_with_exf
2992      - keep the old version of FREEZE for backward compatibility;
2993        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2994      - corresponding modifs for TAF directives
2995    o added surface flux output variables to TIMEAVE_STATVARS
2996    o time-averaged output for pkg/ptracers
2997    o fix problem with ECCO-related divided adjoint
2998      snapshot file was missing some ad-variables,
2999      but no warning issued by TAF
3000    
3001    checkpoint52a_pre
3002    o some bug fixes for #undef REAL4_IS_SLOW
3003    
3004    checkpoint52 = ecco_c52_e35
3005    o after testing adjoints of checkpoint51u_post
3006    
3007    checkpoint51u_post
3008    o this is the post-merge tag of the ecco-branch
3009      (needs another clean checkout and re-testing)
3010    o various natl_box_adjoint configs and results
3011      but no input fields
3012    o obcs adjoint not yet merged!
3013    o adding ECCO global 1x1 and 2x2 degree configs
3014    o updated/extended some store directives for seaice
3015    o pkg/ecco now containes ecco-specific part of cost function
3016    o top level routines the_main_loop, forward_step
3017      supersede those in model/src/
3018      previous input data.cost now in data.ecco
3019      (new namelist ecco_cost_nml)
3020    o in ctrl/ cleaned some cross-dependencies and updated CPP options
3021    
3022    checkpoint51t_post
3023    o this is the pre-merge tag of the ecco-branch
3024    
3025    checkpoint51s_post
3026    o cleanup: removed various obsolete #define-s
3027    o pkg/grdchk
3028      - renamed 'ph-grd 3' to 'grad-res'
3029      - merged from ecco-branch
3030        (remaining bug fixes for obcs gradient checks)
3031      - additional high-precision output for testreport
3032        (grep for 'precision_grdchk_result')
3033    
3034    checkpoint51r_post
3035    o cleaned up or removed CPP_OPTIONS.h files
3036    o updated results for some of the tests to reflect the new
3037      optfiles (-ieee: -O0 instead of -O3)
3038    
3039    checkpoint51q_post
3040    o cd_code:
3041      - moved cd_scheme.F -> cd_code_scheme.F
3042      - separate read_checkpoint from cd_code_ini_vars.F
3043      - separated cd_code part from write_checkpoint
3044      - updated AD_SOURCE, generated .flow
3045      - added CD_CODE_VARS.h to the_main_loop
3046      - Moving cd_code specific store dir.s to pkg/cd_code
3047    o ctrl package totally restructured
3048      - pack/unpack now optional and decoupled from
3049        xx_/adxx_ I/O
3050      - ctrl_pack/unpack cleaned
3051        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
3052      - confined inclusion of AD_CONFIG.h to where necessary.
3053    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
3054    
3055    checkpoint51p_post
3056    o create initial cd_code package
3057      - WARNING: the initialization of fields within packages
3058        is broken because INI_FIELDS (where READ_CHECKPOINT is
3059        called) is called *before* PACKAGES_INIT_VARIABLES.
3060        This seems to be backwards since
3061        1) its important to initially zero the entire field including
3062           the "halo" region
3063        2) zeroing needs to be done *before* reading pickup info
3064           and the pickup call might or might not happen in any
3065           particular run
3066      - this needs an overhaul for R2
3067    o cleanup verification/*/code/GMREDI_OPTIONS.h
3068    o cleanup testreport
3069    
3070    checkpoint51o_post
3071    o bringing AD-related verif's up to date with genmake2
3072      - carbon/
3073      - global_ocean.90x40x15/
3074      - hs.94.1x64x5/
3075      - (front_relax/ )
3076    o (more) consistent directory structure for AD-related verif.'s
3077    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
3078    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
3079    o bug fix in find_alpha.F for MDJWF:
3080      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
3081        change rho -> rho-rhoConst
3082      - replace call find_rho to find_rhonum
3083    o initialisation of rFlx extended to full array (required by TAF)
3084      and shifted to thermodynamics
3085    o removed PTRACERS.h in ptracers routine
3086    o added surfacetendencyPtr to S/R parameter list pracers_forcing
3087    o Correcting initialisations for fVerU, fVerV.
3088    o helping TAF to recognize dependency on kUp for
3089      fVerU, fVerV
3090    o Replacing delZ by delR in pkg/ctrl/
3091    checkpoint51o_pre
3092    
3093    o undid all of cp51 pending some cleanups and discussion
3094    o added the [#include "AD_CONFIG.h"] statement to all files that need
3095       it for adjoint/tl #defines
3096     o re-worked the build logic in genmake2 to support AD_CONFIG.h
3097     o removed tools/genmake since it no longer works
3098    
3099    checkpoint51n_post
3100    o modifications to make FREEZE flux visible to pkg/kpp
3101      - moved surfaceTendencyTice from pkg/seaice to main code
3102      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
3103      - subroutine FREEZE now limits only surface temperature
3104        (this means new output.txt for global_ocean.90x40x15,
3105         global_ocean.cs32x15, and global_with_exf)
3106    o added surface flux output variables to TIMEAVE_STATVARS
3107    
3108    checkpoint51n_pre
3109    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
3110    o added [#include "AD_CONFIG.h"] to all files that use the following
3111      defines:
3112      - ALLOW_ADJOINT_RUN
3113      - ALLOW_TANGENTLINEAR_RUN
3114      - ALLOW_ECCO_OPTIMIZATION
3115    
3116    checkpoint51m_post
3117    o incorporating changes to get TAMC/TAF working in genmake2
3118      - added new TAMC/TAF targets to the Makefile
3119      - various cleanups related to package handling
3120      - these changes should have no impact on the forward model
3121    
3122    checkpoint51l_post
3123    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
3124     - faster algorithm for cal_addtime.F
3125     - higher precision arithmetic, where needed
3126     - pkg/exf *startdate variables changed from calendar date to
3127       model integration time
3128    
3129    checkpoint51l_pre
3130    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
3131    o enable to apply restoring on S & T only in a latitude band.
3132    o update output (external_forcing_surf modif. change truncation errors)
3133       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
3134    
3135    checkpoint51k_post
3136    o change default to: useNHMTerms=.FALSE.
3137     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
3138       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
3139     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
3140        exp1, ideal_2D_oce
3141     - change data file of oceanic exp (leave the results unchanged for now)
3142       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
3143    o set gravitySign automatically according to the vertical coordinate used
3144      (and change sign: back to "logical" value: +1 when R increases downward)
3145    o added an include barrier to the default CPP_OPTIONS.h and
3146      removed the #include "PACKAGES_CONFIG.h" from it
3147    o fix a bug in mom_fluxform (from chk51j_post)
3148    
3149    checkpoint51j_post
3150    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
3151    o adjusted some flow directives (dynamics, thermodynamics)
3152    o added cubed-sphere case to test cost function
3153    o heckpoint_lev?_directives.h now include
3154      pkg-specific directives, whenever those are enabled.
3155    o Moving pkg-specific flow directives to corresponding pkg
3156      Moving pkg-specific differentiation list to corresponding pkg
3157      Moving pkg-specific checkpoint-lev storing to corresponding pkg
3158      ---> conventions are
3159           - pkg_ad.flow
3160           - pkg_ad_diff.list
3161           - pkg_ad_check_lev?_dir.h
3162    
3163    checkpoint51i_post
3164    o merge of the branch-genmake2
3165      - knowingly breaks the older genmake
3166      - automatic generation of all ALLOW_${PKG_NAME} defines
3167      - new testreport supersedes older testscript
3168    o large number of package inclusion and header cleanups
3169    checkpoint51i_pre
3170    
3171    o new output for adjoin of global ocean vector invariant
3172    o fix for checkpoint of thermodynamic seaice and bulk_force
3173    o Steph gchem various cleanups
3174    
3175    checkpoint 51h_pre
3176    o fixed some single quotes
3177    o modify gchem pkg to be more versatile
3178    o modifications to clean up dic pkg
3179    o add pkg/cfc
3180    
3181    checkpoint51g_post
3182    o provide links for ARPACK and ADM*TLM
3183    o start removing verification/vero/
3184    o update AD-related stuff
3185      (in particular some IF-statements in model/src/ routines)
3186    o adding to verification/global_ocean.90x40x15/ adjoint of
3187      vector invariant setup
3188    
3189    checkpoint51f_post
3190    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
3191    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
3192      of tracer Green's fucntions for ocean inversion project.
3193    
3194    checkpoint51f_pre
3195    o Added on-the-fly spatial interpolation capability
3196        "USE_EXF_INTERPOLATION" to pkg/exf.
3197      - This is a temporary Cartesian-grid hack until
3198        the super-duper ESMF coupler becomes available.
3199      - See verification/global_with_exf/README for usage example.
3200      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
3201        flags and modified pkg/seaice accordingly.
3202    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
3203        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
3204        non-local transport term.
3205    
3206    checkpoint51e_post
3207    o pkg/mom_vecinv:
3208      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
3209      - add time-ave diagnostic of vorticity advection.
3210    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
3211    o atmospheric geopotential: - include water vapor effect;
3212                                - use p^kappa in p* scaling.
3213    o land pkg: read initial state from files.
3214    o AIM : add stratospheric drag in the upper level
3215    
3216    checkpoint51d_post
3217    o change function ILNBLNK (=> last non-blank char.) to return zero
3218      (instead of the string length) when the string. char is empty
3219    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
3220    o modif's to restore TAMC compatibility
3221      - avoid "_d" constructs in PARAMETER declarations
3222      - avoid interrupting lines by comment lines
3223    o Use cluster local disks for purely local I/O
3224      vs. globally visible disks needed for ctrl stuff
3225      (merged from ecco-branch)
3226      - new active_file_loc... and mdsio_..._loc routines
3227      - affected packages: autodiff, ctrl, grdchk, mdsio
3228    
3229    checkpoint51c_post
3230    o introducing integer flag debugLevel
3231      - debLevZero: suppress all output
3232      - debLevA: standard
3233      - debLevB: equivalent to current debugMode=.TRUE.
3234    o introducing pathname variable mdsioLocalDir for mdsio
3235      that can be specified at runtime
3236      (relevant for cluster I/O to local disk)
3237    `
3238    >>>checkpoint51b_post
3239    adjoint of ptracers
3240    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3241    o extended state in checkpoint_lev?, etc.
3242    o alternative ctrl/cost with tr1 or ptracer
3243    o new comlev1_bibj_ptracers
3244    o new ptracers.flow
3245    o made ptracers_forcing same as external_forcing_s
3246    o added verification for adjoint with ptracers
3247      - adm. grdchk fail so far
3248      - tlm. grdchk OK
3249      - checked tapelev/comlev recomputations: OK
3250    <<<checkpoint51b_pre
3251    
3252    checkpoint51a_post
3253    o added code for biogeochemistry package
3254      - new pkgs: dic, gchem
3255      - new subroutine in ptracers
3256    o modify code for biogeo packages
3257      - in model/src and pkg/ptracers
3258    
3259    checkpoint51
3260    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3261      - autodiff, ctrl, exf, grdchk, seaice
3262      kept separate packages
3263      - cost, ecco, obcs
3264    o updating verification/internal_wave, verification/lab_sea
3265      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3266    
3267    checkpoint50i_post
3268    o Preparing next differentiable checkpoint and sync
3269      of MAIN vs. ecco-branch
3270      - 1st step: this one is differentiable
3271      - 2nd step: next(! not this) checkpoint will have updated packages
3272                  from ecco-branch)
3273    
3274    checkpoint50h_post
3275    o new package "land": provide surface BC for AIM.
3276    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3277    o AIM: use true log-P extrapolation for near surface temp (= as in
3278        F.Molteni paper) ; update aim.5l_cs output.
3279    o New variable in PARM03 for more flexible pickups
3280    o somewhat cleaned package initialisation sequence for
3281      ctrl/ cost/ ecco/ in packages_... routines
3282    
3283    checkpoint50g_post
3284    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3285      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3286      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3287        made the default because of faster convergence than ADI
3288    
3289    checkpoint50f_post
3290    o exf totally restructured
3291      - replaced all exf_set_ routines by one generic exf_set_gen.F
3292        and made sure it's still differentiable
3293      - split exf_getffields.F into new exf_bulkformulae.F
3294      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3295      - updated adjoint/makefile and relevant verif. accordingly
3296    
3297    checkpoint50f_pre
3298     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3299          + change Evap over land. (update aim.5l_cs output)
3300     o added missing .cvsignores and made uniform across expts
3301     o changed configuration of tidal_basin_2d expt
3302     o added pkg/debug functions for tracing code in fatal crashes
3303     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3304     o new fn in pkg/monitor to stop model if solution grows too big
3305     o removed lots of single quotes from comments
3306    
3307    checkpoint50e_post
3308    o make KPP work with PTRACERS
3309     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3310       nearly a copy of kpp_transport_s
3311     - there is no analogue to SurfaceTendencyS, so I have to use
3312       gPtr(of the surface layer) instead
3313    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3314    checkpoint50e_pre
3315    
3316    checkpoint50d_post
3317    o change kpp output from multiple-record state files to single-record state
3318      files analogous to write_state.F
3319    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3320      analogous to the cg2d-related output.
3321    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3322      so that writing to internal file fn (with length 512) fails.
3323    checkpoint50d_pre
3324    
3325    checkpoint50c_post
3326    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3327    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3328    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3329    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3330    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3331    
3332    checkpoint50c_pre
3333    Merging from release1_p13:
3334    o bug fix for pkg/seaice dynamic solver
3335    o Added SEAICE_initialHEFF to pkg/seaice
3336    
3337    checkpoint50b_post
3338    o store u*,v* in gU,V instead of in guNm1,gvNm1
3339    o in order to put the momForcing out of the Adams-Bashforth:
3340      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3341      to timestep.F
3342    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3343    o re-generate output for highly sensitive test-exp:
3344       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3345    
3346    checkpoint50b_pre
3347    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3348    o corrected CPP option mismatch in exf_Bulk... functions for case
3349      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3350    
3351    checkpoint50a_post
3352    o Bug fix for merging between c50 and KPP.
3353      ikey was passed from thermodynamics to kpp_calc via
3354      common block rather than being recomputed in kpp_calc,
3355      in contradiction with new key itdkey.
3356      New key ikppkey created, and tamc.h headers updated.
3357    
3358    checkpoint50
3359    - 2nd step of merge with ecco-branch:
3360      merge changes in ecco-branch back into main trunk
3361    - bug fix in find_alpha
3362    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3363    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3364    - merged some sliced AD support routines
3365    
3366    checkpoint49
3367    merged from ecco-branch:
3368    o exf:
3369      - Enable initialisation of forcing fields to constant
3370        (runtime) values.
3371      - in exf_getffields.F
3372        Reduce i-/j-loop to interior domain, discarding overlaps.
3373        That also fixes wrong TAF-key computations for key_1, key_2
3374        with bulf formulae.
3375      - exf_init.F modify #ifdef for exf_init_evap
3376      - exf_getffieldrec.F, ctrl_getrec.F
3377        The following INT-usages are not safe:
3378          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3379          fldcount = int(fldsecs/fldperiod) + 1
3380        and were modified.
3381    o autodiff: checkpoint_lev...
3382      - updated storing for bulk formulae (some arrays were missing)
3383      - added state for seaice package
3384      - synchronized with main branch
3385    o DIVA:
3386      Modif.s in
3387      - the_main_loop.F
3388      - the_model_main.F
3389      and added cost_final_restore.F cost_final_store.F
3390      o With these changes, it is possible to fully separate
3391        the first forward run to compute the cost function (mdthe_main_loop)
3392        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3393        into separate model executions.
3394        This enables better tuning of DIVA to given queue sizes.
3395      o Loss of cost function value in consecutive DIVA runs is
3396        fixed by storing to 'costfinal' file.
3397      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3398        beginning/end of adjoint integration is accounted for.
3399      The current changes apply to TAF-1.4.26.
3400      TAF has one remaining bug, requiring one manual change
3401      (see MITgcm manual).
3402    o cal: synchronized between MAIN and ecco-branch
3403    
3404    checkpoint48i_post
3405    o Changes to restore differentiability of code w.r.t. previous tag
3406      (mostly adding new routines to make list and replacing
3407      pressure by totPhiHyd).
3408    o Updated and merged grdchk package
3409      - has both ADM and TLM checks
3410      - works for single- and multi-proc.
3411      - output cleaned
3412      - worked successfully for parallel DIVA
3413    o genmake:
3414      - Adding -platform=SP4
3415      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3416    o Modif. for DIVA:
3417      ctrl_unpack should not be called in intermediate DIVA interval.
3418      (similar thing would apply for active files such as
3419      tbar, sbar, psbar, which should not be reinitialised;
3420      only relevant for ecco-branch)
3421    
3422    checkpoint48h_post
3423    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3424    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3425    o Added SEAICE_initialHEFF to pkg/seaice
3426    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3427    
3428    checkpoint48g_post
3429    --- EOS:
3430    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3431      store total Potential in totPhyHyd for diagnostics & EOS.
3432    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3433    --- Pressure/geopotential gradient:
3434    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3435    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3436      ( changes results of global_ocean_pressure )
3437    o NLFS + z-coord.: add eta*Rho' contribution.
3438    o accurate phiHyd when using interface-W at the middle between 2 centers
3439     ( changes results of ideal_2D_oce )
3440    o includes r* 2nd term in potential gradient.
3441    
3442    checkpoint48f_post
3443    Merging from release1_p12:
3444    o Modifications for using pkg/exf with pkg/seaice
3445      - improved description of the various forcing configurations
3446      - added basic radiation bulk formulae to pkg/exf
3447      - units/sign fix for evap computation in exf_getffields.F
3448      - updated verification/global_with_exf/results/output.txt
3449    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3450      (SBO) core products, including oceanic mass, center-of-mass,
3451      angular, and bottom pressure (see pkg/sbo/README.sbo).
3452    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3453      to avoid negative values in shallow regions.
3454      - updated verification/natl_box/results/output.txt
3455      - updated verification/lab_sea/results/output.txt
3456    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3457    o Added useSingleCpuIO option (see PARAMS.h).
3458    o Updated useSingleCpuIO option in mdsio_writefield.F to
3459      work with multi-field files, e.g., for single-file pickup.
3460    o pkg/seaice:
3461      - bug fix in growth.F: QNET for no shortwave case
3462      - added HeffFile for specifying initial sea-ice thickness
3463      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3464    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3465      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3466    o pkg/seaice:
3467      - adjoint-friendly modifications
3468      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3469    
3470    checkpoint48e_post
3471    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3472    o dynamics: change definition of computational domain & adapt mom_fluxform
3473      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3474    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3475        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3476        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3477        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3478        inverted_barometer solid-body.cs-32x32x1
3479      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3480    
3481    checkpoint48d_post
3482    o in preparation for r*:
3483     a) use pre-computed gradient of hydrostatic potential:
3484        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3485     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3486        => affects results of glob_oce_pressure (different truncation error)  
3487      update output.txt of ideal_2D_oce & global_ocean_pressure
3488    
3489    checkpoint48d_pre
3490    o in preparation for r*:
3491      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3492      pass the 2 comp. of the grad. as arguments to momentum S/R.
3493      but for the moment, only used if it does not change the results.
3494    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3495    
3496    checkpoint48c_post
3497    Modifications in treatment of initial flux forcing controls
3498    to avoid extra storing of flux fields.
3499    
3500    checkpoint48c_pre
3501    o Added tidal_basin_2d experiment (currently 1D!)
3502    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3503    
3504    checkpoint48b_post
3505    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3506     (modification to pressure gradient not yet implemented)
3507    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3508      (for U & V) that are used for vertical advection of momentum.
3509    
3510    checkpoint48a_post
3511    o In preparation for r*, use temp. array to compute vertical transport
3512       in flux-form momentum pkg. => change results of few test-exp.
3513      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3514                        lab_sea, natl_box & plume_on_slope
3515    
3516    checkpoint48
3517    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3518    
3519    checkpoint47j_post
3520    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3521    o moved adexch from forward_step to addummy_in_stepping
3522    o added exch in ctrl_map_...
3523    o aveFreq.=0. at end of cost_final to avoid overwrite in
3524      reverse checkpointing loop
3525    o Yet more changes in gmredi:
3526      * adgmredi_calc_tensor
3527        avoiding all recomputation of gmredi_slope_limit
3528      * adgmredi_x/y/rtransport
3529        added flag for excessive storing to avoid recomp. of
3530        u/v/rtans, dTdx/y/z
3531        -> this is not really necessary and very memory-consuming
3532      * adgmredi_slope_psi:
3533        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3534      * gmredi_slope_limit
3535        re-activated full calculation of taperfct for case 'ac02'
3536    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3537    
3538    checkpoint47i_post
3539    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3540    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3541      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3542    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3543    o gmredi: fix few bugs.
3544    
3545    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3546    This will be a good checkpoint to plug into the ecco-branch.
3547    o few modif.'s to get latest version adjointed
3548      (mainly kick out code in ini_linear_phisurf)
3549    o modif's to run adjoint with exactConserv
3550    o case GM_BOLUS_ADVEC should be cleaned
3551      S/R gmredi_slope_psi should be cleaned
3552    o verification/carbon now has exactConserv=.TRUE.
3553    
3554    checkpoint47g_post
3555    o time-average AIM output: becomes independent from statvars time-average
3556      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3557    o After TAF bug fix:
3558      Tested adjoint of gmredi package.
3559      Tests were done with checkpoint47 rather than with latest
3560      checkpoint47f_post since the latter is broken for the adjoint
3561      verification/carbon/ contains both ADM and TLM gradient checks.
3562    Here they are, before they get changed/lost/stolen.
3563    Mostly modif.'s to fix numerical sensitivities.
3564    Gradient checks OK for
3565    - GM_taper_scheme:
3566      * clipping
3567      * ac02
3568      * linear
3569      * glw91
3570      * dm95
3571      * ldd97
3572    - GMREDI_OPTIONS:
3573      * GM_VISBECK_VARIABLE_K
3574      * GM_NON_UNITY_DIAGONAL
3575      * GM_EXTRA_DIAGONAL
3576      * GM_BOLUS_ADVEC
3577    in conjunction with data.gmredi parameters to be checked in
3578    in a few minutes under verification/carbon/code/
3579    
3580    checkpoint47f_post
3581    Merging from release1_p10:
3582    o modifications for using pkg/exf with pkg/seaice
3583      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3584        and SEAICE_EXTERNAL_FLUXES
3585      - pkg/exf CPP options EXF_READ_EVAP and
3586        EXF_NO_BULK_COMPUTATIONS
3587      - usage examples are Experiments 8 and 9 in
3588        verification/lab_sea/README
3589      - verification/lab_sea default experiment now uses
3590        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3591    
3592    checkpoint47e_post
3593    o created a tag prior to creating a branch
3594    
3595    checkpoint47d_post
3596    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3597      at the bottom boundary had an erroneous half slip boundary condition
3598    o added bottom drag and no slip boundary condition capabilities to
3599      oceanic pressure coordinates code
3600    o added new verification experiment global_ocean_pressure, this experiment is
3601      also described in the tutorial section of the manual
3602    checkpoint47d_pre
3603    
3604    checkpoint47c_post
3605    o Added a verification experiment for a global cubed-sphere ocean run
3606      -  verification/global_ocean.cubed32x32x30
3607      -  uses pkg/therm_seaice and pkg/bulk_forcing
3608    
3609    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3610    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3611      when using P-coordinate; only implemented for atmospheric config.
3612    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3613      NOTES: requires option NONLIN_FRSURF to be "#define".
3614    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3615    
3616    checkpoint47b_post
3617    Merging from release1_p9:
3618    o pkg/seaice
3619      - removed GOTO's and added taf directives
3620      - double precision constants to reduce the g77 (Linux)
3621        to F77 (SGI) differences reported in release1_p8
3622    o tools/genmake
3623      - added SGI options
3624    o verification/testscript
3625      - updated to that of checkpoint47a_post
3626    o verification/global_ocean.90x40x15/input/eedata
3627      - modified for SGI f77 compatibility
3628    o verification/lab_sea
3629      - added description of sea-ice model
3630      - added missing matlab routines
3631      - added test of thermodynamics parallelization
3632    
3633    checkpoint47a_post
3634    o new pkg: aim_v23
3635     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3636       for now, keep the same surface forcing as before.
3637     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3638     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3639     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3640    o add diagnostic of surface correction term in monitor output
3641    
3642    o bulk_force and therm_seaice
3643    - Two packages:  bulk_force (Bulk forcing)
3644      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3645    - Earlier integration from Stephaine Dutkiewicz
3646      and Patrick Heimbach.
3647    - Two ifdef statements for compile time,
3648       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3649    
3650    checkpoint47
3651    differentiable version of checkpoint46n_post
3652    o bug fix in quasihydrostaticterms
3653    o * "clean" adjoint code (in terms of extensive recomputations)
3654        can now be obtained for all GMREDI options (i.e. for
3655        - GM_VISBECK_VARIABLE_K
3656        - GM_NON_UNITY_DIAGONAL
3657        - GM_EXTRA_DIAGONAL
3658        - GM_BOLUS_ADVEC )
3659      * However, wrong gradient check problem remains unsolved.
3660      * New CPP options have been introduced for different
3661        tapering schemes
3662    o external_fields_load now part of differentiation list
3663    o pressure needs multiple storing;
3664      would be nice to have store_pressure at beginning or
3665      end of forward_step, e.g. by having phiHyd global (5-dim.)
3666      (NB: pressure is needed for certain cases in find_rho,
3667      which is also invoked through convective_adjustment).
3668    o recomputations in find_rho for cases
3669     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3670    o #define ATMOSPHERIC_LOADING should be differentiable
3671    o ini_forcing shifted to begining of initialise_varia
3672    o Incorporating QNVS line search routines into MITgcm
3673      (this is separate code, and therefore not under pkg)
3674      lsopt/, optim/
3675    o Updated verification/carbon/
3676      - #define GM_VISBECK_VARIABLE_K
3677      - GM_taper_scheme    = 'ldd97'    
3678    
3679    checkpoint46n_post
3680    Merging from release1_p8:
3681    o verification/natl_box:
3682      updating new external_fields_load routine
3683    o New package: pkg/seaice
3684      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3685      The sea-ice code is based on Hibler (1979-1980).
3686      Two sea-ice dynamic solvers, ADI and LSR, are included.
3687      In addition to computing prognostic sea-ice variables and diagnosing
3688      the forcing/external data fields that drive the ocean model,
3689      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3690      The implied surface heat flux is then stored in variable
3691      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3692      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3693      non-local transport term.  Because this call precedes model
3694      thermodynamics, temperature under sea-ice may not be "exactly" at
3695      the freezing point by the time theta is dumped or time-averaged.
3696      N.B.: fairly large differences in accuracy occur across
3697            different platforms/compilers; comparison between
3698            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3699            generated output gives:
3700       T           S           U           V
3701      C D M    c        m  s        m  s        m  s        m  s
3702      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3703      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3704      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3705    
3706      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3707    o GAD:
3708      - generated new common blocks to account for call of
3709        same gad routines with differing traceridentities
3710        (needed to modify tracerIdentity indices in GAD.h)
3711      - generated separate common blocks for case useCubedSphereExchange
3712        (Department of Futurology)
3713      - parameter lists to gmredi_?transport: added tracerIdentity
3714      - added new key indices to tamc.h
3715    o external_fields_load:
3716      - added this routine to TAF list
3717      - needed to make some common blocks global and additional storing
3718        along the same lines as exf package (checkpoint_lev?_directives.h)
3719    o exf:
3720      updated external forcing package
3721      - bug fixes carried over from ecco-branch
3722        (missing OBCS_OPTIONS.h in two routines)
3723      - enable easy to use "no forcing".
3724      - added exf I/O for atmospheric loading
3725      - added exf I/O for runoff data
3726      - transfered scaling between exf <-> MITgcm to exf namelist
3727    o Adding new verification experiment global_with_exf.
3728      This verification experiment is almost identical to the
3729      global_ocean.90x40x15 experiment, except that it uses
3730      the exf (and cal) package instead of the
3731      external_fields_load routine (cf README file).
3732    
3733    checkpoint46m_post
3734    o modified testscript to return -- when there are no lines of "%MON" output
3735    o added new flag "quasiHydrostatic" for QH mode
3736      and new routine quasihydrostaticterms()
3737    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3738      New routine: mom_u_coriolis_nh()
3739    o fixed sign of non-hydrostatic metric terms in u and v equations.
3740      Depend on correct sign of gravitySign.
3741    o added work.pc* to .cvsignore in aim directories using ifc
3742    o introduced flag for controllin non-hydrostatic metric terms
3743    o removed gravitySign from PARM04
3744    o switched to g77/ifc from pgf77 in aim experiments
3745    
3746    checkpoint46l_post
3747    o made convective adjustment work with pressure coordinates:
3748     - changed the direction of k-loop in convective_adjustment.F for the
3749       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3750     - adjusted the reference pressure k-index in convective_adjustment.F
3751     - adjusted the convection condition in convect.F (in analogy to
3752       calc_ivdc.F)
3753     - convective_adjustment no longer computes anything on the halos
3754     - removed the warnings about negative salinity from find_rho.F and
3755       find_alpha.F; instead the new routine look_for_neg_salinity, called
3756       at the beginning of find_rho, find_alpha, and find_beta, does a
3757       check of the entire slice, if CPP-option
3758       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3759    checkpoint46l_pre
3760    
3761    checkpoint46k_post
3762    o fixed the verification/global_ocean.90x40x15 experiment:
3763     - new bathymetry (the world according to A., JMC, and M.)
3764     - new initial fields and forcing fields (*.bin files)
3765     - new POLY3.COEFFS (for the next release one should switch to a full
3766       equation of state: JMD95P or MDJWF)
3767     - fixed several errors and redundancies in the data file
3768     - experiment uses looped cells
3769     - added matlab directory with diagnostic scripts for plotting of output
3770    
3771    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3772     - read AIM physics parameters from a file (data.aimphys)
3773     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3774    
3775    checkpoint46j_post
3776    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3777    o move wVel computation at the end of the time step, in S/R integr_continuity
3778    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3779    o update timeave pkg for wVel diagnostic.
3780    checkpoint46j_pre
3781    
3782    checkpoint46i_post
3783    o Clean up AIM package (and keep the results unchanged):
3784      include CPP_OPTION and use IMPLICT NONE in all routines ;
3785      declare all the variables _RL ; use _d 0 for all numerical constants.
3786      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3787    
3788    checkpoint46h_post
3789    o cleaned up the use of rhoNil and rhoConst.
3790      - rhoNil should only appear in the LINEAR equation of state, everywhere
3791        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3792        and the dynamical equations are all divided by rhoConst
3793    o introduced new parameter rhoConstFresh, a reference density of fresh
3794      water, to remove the fresh water flux's dependence on rhoNil. The default
3795      value is 999.8 kg/m^3
3796    o cleanup up external_forcing.F and external_forcing_surf.F
3797      - can now be used by both OCEANIC and OCEANICP
3798    checkpoint46h_pre
3799    
3800     Added code to convert surface volume flux (fresh water) into
3801     a mass flux when using P coordinates in the ocean (OCEANICP).
3802     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3803    
3804    checkpoint46g_post
3805    o Include a new diagnostic variable phiHydLow for the ocean model
3806      - in z-coordinates, it is the bottom pressure anomaly
3807      - in p-coordinates, it is the sea surface elevation
3808      - in both cases, these variable have global drift, reflecting the mass
3809        drift in z-coordinates and the volume drift in p-coordinates
3810      - included time averaging for phiHydLow, be aware of the drift!
3811    o depth-dependent computation of Bo_surf for pressure coordinates
3812      in the ocean (buoyancyRelation='OCEANICP')
3813      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3814        Theta, Salinity, and Pressure in the parameter list. This routine is
3815        presently contained in find_rho.F. This routine does not give the
3816        correct density for 'POLY3', which would be a z-dependent reference
3817        density.
3818    o cleaned up find_rho
3819      - removed obsolete 'eqn' from the parameter list.
3820    o added two new verification experiments: gop and goz
3821      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3822    checkpoint46g_pre
3823    
3824    checkpoint46f_post
3825    o Enable tangent linear (forward mode) gradient checks:
3826      - extended active file handling to g_... files
3827      - added TANGENT_SIMULATION to theSimulationMode
3828      - extended grdchk package accordingly
3829    o added tangent linear setup in verification/carbon/code_ftl
3830    o added adjoint setup in verification/front_relax/code_ad
3831    
3832    checkpoint46e_post
3833    o Added new equation of state -> MDJWF
3834      - EOS of McDougall et al., 2002, JAOT, submitted
3835      - caveat: the equation of state is only valid for a smaller (more
3836        realistic?) range of values than JMD95P/Z and UNESCO
3837      - added masks to the calculation of pressure in store_pressure
3838      - added more check values for density in check_eos (ini_eos.F), some of
3839        the old check values are out of the range of the MDJWF-eos, so don't
3840        expect perfect matches for those
3841    checkpoint46e_pre
3842    
3843    checkpoint46d_post
3844    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3845      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3846      case of pressure coordinates. eosType='JMD95Z' in
3847      combination with buoyancyRelation='OCEANICP' now causes an error.
3848    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3849      in find_alpha/beta.
3850    checkpoint46d_pre
3851    
3852    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3853      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3854    
3855    checkpoint46c_post
3856    o Changes necessary for ocean in p-coordinates
3857     -  Added new buoyancy relation = 'OCEANICP'
3858     -  Added new parameters = gravitySign (this used to be contained inside
3859        the factor dRdZ which I added when we first switched to R coordinates).
3860     X GM/Redi is not compatible (yet)
3861     X bottom drag and no-slip need to be debugged.
3862    checkpoint46c_pre
3863    
3864    checkpoint46b_post
3865    o Added new equation of state -> JMD95Z and JMD95P
3866      - EOS of Jackett and McDougall, 1995, JAOT
3867      - moved all EOS parameters into EOS.h
3868      - new routines ini_eos.F, store_pressure.F
3869    o Added UNESCO EOS, but not recommended because it requires
3870      in-situ temperature (see JMD95)
3871    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3872      unesco.f to be used with POLY3
3873    checkpoint46b_pre
3874    
3875    checkpoint46a_post
3876    o Added (atmospheric) pressure loading
3877      - new field in FFIELDS.h, etc...
3878      - new cpp flag ATMOSPHERIC_LOADING
3879    o Changed hFacC to _hFacC in calc_phi_hyd.F
3880    o Added SHORTWAVE_HEATING to some files for consistency
3881    checkpoint46a_pre
3882    
3883    checkpoint46
3884    further merges from release1_p5
3885    o new ctrl package
3886      - adopted from ECCO environment to enable optimization
3887      - added Eliassen Palm fluxes to controls
3888    o added Eliassen Palm flux controls to gradient check package
3889    o cost package
3890      - Compatible with new ctrl package
3891      - added Eliassen Palm cost hooks
3892      - modif's of existing cost functions
3893    o Adjoint-related bug fixes in kpp:
3894      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3895      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3896    o autodiff package
3897      - flow directives:
3898        + new for S/R do_the_model_io
3899        + enhanced for S/R checkpoint
3900        + new gmredi.flow
3901      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3902        disable adcommon.h/g_common.h by default.
3903      - fixed problem for adjoint of global_max
3904    o modified verification/carbon/
3905    o New setup for adjoint of global_ocean
3906    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3907    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3908    o incorporated hooks for sponge layer code (external_forcing.F)
3909    
3910    checkpoint45d_post
3911    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3912  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3913    (affects plume_on_slope "cg2d" output)    (affects plume_on_slope "cg2d" output)
3914    o add new parameter deltaTfreesurf for free-surface time stepping
3915    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3916  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3917  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
3918  o add new flags:  o add new flags:

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