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revision 1.28 by adcroft, Wed Jun 21 20:11:54 2000 UTC revision 1.1120 by jmc, Wed Jun 10 03:59:51 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 eesupp (global_max & global_sum):
8     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
9     - remove starting & endding barrier (no longer needed)
10    o pkg/mdsio, writelocal:
11       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
12       (remove the STOP): uses shared buffer IO to store data from all threads
13       and then let master-thread write nThreads tiles.
14    o pkg/mdsio (read/write field):
15     - tiled IO done in 1 piece (all levels at a time);
16     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
17     - multi-threaded: allow to read/write local (non-shared) array
18       (was already working with singleCpuIO ; now works also without);
19       => no longer needs barrier call after reading a file (added inside
20       mds_read/write field).
21     - move barrier calls outside gather/scatter_2d to mds_read/write_field
22    o pkg/obcs/exf
23      - exf_getffieldrec.F: add a few ". _d 0" and
24                            add code to catch the case fldperiod = 0.  
25      - obcs_precribe_read.F: change if statements so that they match
26                              the variable type (_RL)
27      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
28        exf_iprec) as part of namelist EXF_NML_01
29    o pkg/mdsio:
30      - read/write tiled (local) files: read/write 1-level tile chunk at a time
31        (instead of segment of length sNx); expected to speed up tiled IO.
32    o pkg/exch2:
33      - take buffer copy from/to array out of S/R exch2_send/recv into new
34        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
35        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
36      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
37      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
38        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
39        including Topology header file (and common blocks).
40      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
41        remove 2nd exch call in exch2_s3d_rx (no longer needed).
42      - document S/R arg. list (+ update some comments)
43    o pkg/seaice:
44      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
45        temperature and humidity over sea ice based on climatological values.
46      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
47        of LSR (this change is expected to change the results slightly because now
48        it uses slightly difference moduli from the second last LSR solution, but
49        that is more consistent with the stress computations; this part of the code
50        is not tested in the verification experiments)
51      - fix diagnostics for flux of ice in case of B-grid
52      - turn strain rates eij and press into global fields within global
53        common block in SEAICE.h for more straighforward diagnostics
54      - fix diagnostics for principal stress components, press, zeta, eta
55        to give something meaning full
56    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
57      new output (all 4 tests) using default rotationPeriod.
58    o pkg KPP:
59      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
60      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
61        and normal grid from 1 to Nr)
62    o Fix computations of L4rdt in mom_calc_visc.F
63    o eesupp:
64      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
65      should be called before a "stop" if we know that all process are going
66      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
67    
68    checkpoint61o
69    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
70    o model/src/ini_curvilinear_grid.F:
71       compute angleSin/CosC when they are not read from a file
72    o pkg/seaice:
73       add pseudo time stepping for LSOR
74    o pkg/exch2:
75       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
76    o pkg/seaice:
77       Adding separate sea ice albedo, drag coefficients, and HO in Southern
78       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
79    o SingleCpuIO:
80       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
81    o pkg/seaice:
82       put exchanged variable in (local) common block for MPI+Multi-Threads
83       to work (necessary with exch1, and for now with exch2 too).
84    o verification: to get more experiments tested with mpi, mth and mpi+mth,
85      change tiling of:
86       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
87       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
88      update output of exp:
89       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
90       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
91      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
92                       (note: output.txt generated on faulks using only 1 tile)
93    o eesupp & mdsio (SingleCpuIO):
94     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
95       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
96       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
97     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
98     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
99       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
100    o pkg/exch2:
101     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
102       read parameter file "data.exch2" if it exists; otherwise try default regular
103       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
104     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
105       with new code (not to be used, just as a backup solution).
106     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
107       in utils/exch2/input.
108    
109    checkpoint61n
110    o eesupp & mdsio (SingleCpuIO):
111      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
112        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
113        receive real*4 array (instead of real*8) to read/write 32.bit files.
114        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
115         and remove new mapping S/R)
116    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
117      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
118        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
119        when using exch2. Add S/R to map global io-buffer to global model array.
120      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
121    
122    checkpoint61m
123    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
124      and add 3 other S/R for other types (R4,R8,RS).
125      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
126    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
127     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
128     - reduce number of macro definitions (keep only those which are used);
129       can always call directly the corrresponding S/R if needed.
130     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
131       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
132     Fixed wrong type of arg in:
133       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
134       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
135     To fix: global_sum of var in common block is wrong (multi-threaded) in:
136       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
137     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
138    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
139      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
140    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
141    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
142      edges are closed (zero depth); might happen with "blank tiles";
143      for now, disabled if using OBCS.
144    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
145      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
146    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
147      to reduce length of 1.D array print in STDOUT.
148    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
149      + use 48 tiles (16x8): this will allow to test "blank tiles".
150    o start to test MPI + multi-threaded (change testreport to skip tests
151      where number of tiles do not match).
152    o genmake2: add option "-omp" to turn on Open-MP ;
153      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
154    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
155      and keep the original tile numbering. Note: compatible with old
156      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
157    
158    checkpoint61l
159    o Overlaps had been forgotten in calculating ijk keys : fixed
160    o fix cyrus makedepend for gcc 4.4
161    o experiment fizhi-cs-aqualev20:
162      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
163      and generate new output. Note: new output is much closer to the old
164      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
165      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
166    o pkg/fizhi:
167     - change to avoid indices going deliberately over array-bounds
168     - remove unnecessary MPI stuff
169     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
170     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
171       does not go over array-bounds and therefore returns reliable output.
172     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
173       this S/R has 4 output arguments, which are used inside "get_alarm";
174       when it is called with the same variable "ndum" in place of several
175       output arguments, this produces weird side effect inside "get_alarm"
176      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
177       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
178       address) and produces error.
179    o tools/gemake2: (March 27-29 2009)
180      with option "-mpi": link *_mpi files from "MODS" dir (this is what
181      testreport does).
182    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
183    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
184       update lab_sea.lsr & lab_sea.salt_plume results
185    o pkg/seaice:
186      Major overhaul of the LSOR solver: change discretization from original
187      finite differences to finite volume. The old routine is still in the
188      file seaice_lsr.F and can be turned on with the CPP-flag
189      SEAICE_OLD_AND_BAD_DISCRETIZATION
190      Along with this change, the discretization of the strain rates is changed.
191      The same flag turns on the old discretization in seaice_calc_strainrates.F
192      All verification experiments with seaice are affected (except for
193      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
194      results by setting the above flag.
195      Further changes involve changes in defaults:
196      - ALLOW_FLOODING is defined and turned on by default
197      - SEAICEadvSnow = .true. is now the default
198      - SEAICEadvSalt = .true. is now the default
199      - SEAICEadvAge  = .true. is now the default
200      - SEAICE_clipVelocities  = .false. is now the default
201                                         (as per J. Zhang's recommendation)
202      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
203        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
204      - seaice_growth: replace computation of UG by a simple copy from wspeed
205    
206    checkpoint61k
207    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
208      seaice_lsr: fixed a few metric terms,
209                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
210                  add more debugging diagnostics
211      seaice_evp: removed superfluous many metric terms of FV discretization
212                  of stress divergence
213                  affects lab_sea, lab_sea.hb87
214      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
215                  of stress divergence for non-evp solver
216                  (this part is not tested anywhere)
217      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
218                  they were effectively only half slip
219                  affects lab_sea.hb87
220      updated all relevant verification experiments (except lab_sea//output_adm.txt
221        which was left over, but fails at level 7 & 6)
222    
223    checkpoint61j
224    o pkg/seaice: turn a few hard wired parameters into run time parameters
225    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
226      time in seconds as promised by the usints in seaice_monitor and exf_monitor
227    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
228      that are not cubed-sphere grids
229    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
230    o pkg/ctrl:
231      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
232    o non-hydrostatic (calc_gw.F):
233      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
234      update output of exp. global_ocean.cs32x15.viscA4
235    o remove backward compatibility for thetaMin,phiMin
236      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
237    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
238      interpolated wind field not only for curvilineargrid=.true., but also
239      for a rotated grid (rotateGrid=.true.)
240    o pkg/exf: add capability to bypass interpolation for runoff
241      by setting yet another CPP-flag
242    o eesupp/src, B-grid exchange:
243      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
244    o autodiff
245      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
246      allows to switch to single-prec common blocks;
247      corresponding switch occurs in tamc.h, integer isbyte
248      TAF store directivs "byte" and "kind" seem equivalent;
249      Most tamc.h have been updated correspondingly.
250    
251    checkpoint61i
252    o autodiff:
253      fix autodiff_sore/_restore indices for obcs
254      (spotted by I. Hoteit, M. Mazloff)
255    o pkg/autodiff, pkg/ctrl:
256      Add flag to reduce all tapelev I/O to single-prec.
257      In data.ctrl set
258        doSinglePrecTapelev = .TRUE.
259    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
260      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
261    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
262      real fresh water flux (not yet)
263    o pkg/mdsio & rw:
264     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
265     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
266    o pkg/flt:
267     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
268       init_fixed & ini_varia.
269     - clean-up & simplify linear interpolation S/R:
270       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
271     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
272     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
273     - add vert. coordinate & horiz. indices to output files.
274     - change vertical position in initial condition, from index to depth [m].
275     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
276       (easier to get to a curvilinear grid) ; delX,delY no longer used.
277    o pkg/ggl90: a few modifications:
278     - fix bottom boundary condition, and interpolation of KappaE
279       near top and bottom
280     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
281     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
282     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
283    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
284      (maintain temporary backward compatibility, until next checkpoint)
285    
286    checkpoint61h
287    o pkg/diagnostics with "periodic averaging diagnostics":
288      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
289    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
290    o pkg/obcs: fix loop ranges for balancing code
291    o pkg/flt:
292     - improve criteria for finding which tile owns a float.
293     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
294    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
295      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
296      with ocean biogeo)
297    o pkg/flt:
298     - do some cleaning and fix the restart ;
299     - add output.txt in flt_example/results to get this pkg tested.
300    o genmake2: add an EXTENDED_SRC option and flag.
301       for now, cannot be turned on on command line (only through genmake_local)
302    o pkg/mdsio: read/write vector:
303     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
304     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
305       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
306     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
307      (drop to 4 digits matching for grad). But this test does not look very
308      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
309    
310    checkpoint61g
311    o pkg/flt:
312      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
313       + make OPTIONS file more standard.
314      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
315      - fix _BYTESWAPIO CPP-Flag
316      - standard reading of file-parameter "data.flt"
317      - fix argument list of S/R FLT_RESTART
318      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
319    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
320    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
321      a still unfixed compiler/optimization bug
322    
323    checkpoint61f
324    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
325      update results of global_ocean.cs32x15.icedyn test.
326    o move getcon.F from model/src to pkg/fizhi.
327    o pkg/exf: add parameter for extrapolation of temp up to the surface
328       and option to prevent negative evap (in bulk_largeyeager04 only).
329    o Prather Advection scheme: fix tracer conservation for divergent flow
330      (e.g., when using NonLin Free-Surface).
331    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
332    o gmredi (Visbeck-variable-K):
333     - add more parameters to Visbeck-variable-K.
334     - use a 5 points average for dSigmaR in Visbeck-K calculation
335       (more "homogenous": same stencil and same weights as in dSigmaH)
336     - update output of ideal_2D_oce experiment.
337    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
338      (#undef REAL4_IS_SLOW)
339     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
340       coordinate variable
341     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
342       (surface forcing fields), removes some of the functionality
343     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
344     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
345       probably not all: copy _RS surface flux fields to RL field before
346       calling DIAGNOSTICS_FILL
347     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
348       real*4 (CALL EXCH_*_RS) versions.
349     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
350       (generate new output).
351    
352    checkpoint61e
353    o gmredi (Visbeck-variable-K):
354      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
355      - change computation of Visbeck-K where Slope > Smax :        
356        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
357        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
358    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
359      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
360    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
361    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
362      does not become too large (to avoid precision problems in implicit-diffusion
363      solver); update ideal_2D_oce output.
364    o pkg ggl90:
365      - in ggl90_cal.F: compute only one set of visc/diff, used to
366        step forward TKE/T/S/momentum
367      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
368        have Prandlt =1)
369    o gmredi (fm07):
370      - add lower limit on Transition layer thickness + lower limit on 1/lambda
371      - allow to set few more params from data.gmredi
372    o pkg ggl90:
373          - add missing sqrt(2) factor in computation of mixing length
374            scale in ggl90_calc.F
375            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
376    
377    checkpoint61d
378    o adjoint modifs
379      - adapt to new field rhoInSitu
380      - allow to revert from StoreDynVars2D, StoreDynVars3D
381        to individual fields
382        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
383    o store 3-D (in-situ) density in commom block (DYNVARS.h)
384     - save 1 rho computation.
385     - no longer modify T & S inland when using down_slope pkg.
386    o gad_som : allow to switch to SOM advection for T & S without corresponding
387      pickup files (using new S/R: MDS_CHECK4FILE).
388    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
389      (for useSingleCpuIO to work in multi-threaded)
390    o pkg/shelfice:
391     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
392       with SHELFICEtopoFile in data.shelfice
393     - move code for reading ice shelf topography and modifying hFacC into separate
394       subroutines of the shelfice package
395     - separate initialisation of "fixed" and "variable" variables
396     - kTopC is not (yet) replaced by kSurfC, although this is possible
397    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
398    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
399      and rename:
400      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
401      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
402    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
403    
404    checkpoint61c
405    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
406      to add mass source/sink of fluid in the interior (3-D generalisation
407      of oceanic real-fresh water flux).
408    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
409    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
410    o new pkg: down_slope
411      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
412      - presently, modify T & S inland (dwnslp_calc_rho.F).
413        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
414      - implementation for ocean in P-coords not tested.
415      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
416    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
417      (to facilitate conversion of oceanic pkg to p-coordinate).
418    o change FIND_RHO to FIND_RHO_2D :
419      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
420    o new pkg: cheapaml
421    
422    checkpoint61b
423    o exch2:
424      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
425      - no longer depend on the order sequence (N,S,E,W).
426      - 3rd exchange no longer needed (tested with 24 tiles).
427      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
428      - exch_UV_A-grid readily available (but not yet tested).
429      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
430      (both are no longer needed) in exch_uv: no effect in forward run; but
431       get truncation error differences with adjoint exch.
432    o exch2:
433     - change index-bounds storage (moved from target to local tile,
434       more intuitive this way) ; rename/remove some variables.
435     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
436    
437    checkpoint61a
438    o exch2/matlab-topology-generator:
439      fix bug in index bounds for N-S internal exchange (hard to tell if this
440      had any effect on the solution).
441    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
442      is exceeded
443    o testreport: modify syntax of awk, so that it works also with
444      awk, and not only with nawk and gawk
445    
446    checkpoint61
447    o autodiff
448      Change default for TAF usage by removing argument '-nonew_arg'
449      This changes TAF subroutine argument list (ordering of active var.)
450      Omission of this flag leads to incompatibility w.r.t. TAMC
451      To restore TAMC-compatibility, need following modifs:
452      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
453      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
454      Tested TAF version is 1.9.22
455      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
456    
457    checkpoint60
458    --->>> This is the last checkpoint for which generating the adjoint
459    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
460    --->>> by default.
461    --->>> Future checkpoints will ommit this flag by default.
462    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
463    o pkg/grdchk: Add gradient check to etan0 perturbations.
464    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
465    o pkg/autodiff: more flexibility in zeroadj.
466      model/src: modifying do_oceanic_phys.F accordingly.
467    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
468    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
469      special setup of gmredi for which the adjoint is stable
470      enough for parameter optimization.
471    o bridging the gap between eddy stress and GM.
472      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
473          along with a change in CPP option (now ALLOW_EDDYPSI).
474      -> when using GM w/ GM_AdvForm:
475          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
476          is applied either in the tracer Eq. or in momentum Eq.
477          depending on data.gmredi (intro. GM_InMomAsStress).
478      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
479      The key modifications are in model/src/taueddy_external_forcing.F
480      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
481    
482    checkpoint59r
483    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
484      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
485      fix option to read coriolis(@ cell-corner) from files with CS-grid.
486    o pkg/mnc: add some attributes to standard 1D-coordinate variables
487    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
488      mass points, when using mnc for output
489      - add runtime parameter (missing_value, missing_value_int) to override
490        default (which is the value of getcon('UNDEF'))
491    o pkg/mnc: prepare mnc for the actual use of missing values with the
492      diagnostics package: small fix in mnc_cw_readwrite.template and more
493      initialisation of never used fields
494      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
495      versions
496    o pkg/thsice/thsice_ini_vars.F added default initial values so that
497      thermodynamics sea ice solver does not blow up when some initial fields
498      are missing.
499    o move from external_forcing_surf.F to ini_forcing.F
500      the p-coord. hack consisting in using pLoad to set phi0surf ;
501      update output of tutorial_global_oce_in_p (affected @ truncation level).
502    o Freshen up a bit hs94.1x64x5, notably:
503      remove rotationPeriod and tRef=5*0. (adjoint only), and add
504      exactConserv=.TRUE.
505    o pkg/generic_advdiff:
506      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
507      applies to files where Temperature & Salinity 2nd Order moments are used.
508    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
509      this uses a dynamically allocated internal state data structure
510      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
511      and requires a fortran 90 compiler
512    
513    checkpoint59q
514    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
515       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
516    o Refresh tutorial_global_oce_biogeo, notably:
517      - change bathymetry (put back seamounts in ACC, use hFacs)
518      - change EOS (POLY3 --> JMD95Z)
519      - use Bryan-Lewis vertical diffusivity
520      - use multidimensional advection
521      - remove old virtual virtual in dic pkg, now done through ptracer pkg
522      - change a couple of parameters in dic pkg
523    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
524    o pkg/obcs: change default to OBCSfixTopo = .true.,
525      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
526      - replace "debugMode" with "debugLevel .GE. debLevB"
527    o implementation of TAF directives for gchem,cfc,dic
528    o remove "exp5" (replaced by tutorial_deep_convection).
529    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
530      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
531      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
532      --> changes results in exp4, seaice_obcs
533    o tutorial_deep_convection :
534      update the set-up and increase resolution and domain size ; start
535      from pseudo initial conditions = output at t=120mn in order to see
536      something happening when running testreport.
537    o pkg/seaice: add os7mp as an advection scheme
538                  add check for advection schemes
539                  add a flag for restoring T and S underneath sea ice
540    o pkg/my82: add netcdf-support and diagnostics
541    o thsice pkg:
542      - Now hsMax limits snow height by turning it into ice following
543        flooding scheme (and now conserving energy)
544      - Slight rewriting of the formula in thsice_calc_thick.F
545      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
546      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
547    
548    checkpoint59p
549    o gchem / dic / cfc :
550      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
551      - add new parameter files: "data.dic" & "data.cfc" ;
552      - various re-arrangement in initialisation & header file ;
553      - fix tutorial_global_oce_biogeo for multi-threaded test.
554    o pkg/dic: test for "pickup_dic" file when restarting ;
555      if no pickup-file, can restart with a re-initialised pH (same as it did
556      before) providing pickupStrictlyMatch is set to False.
557    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
558      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
559    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
560      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
561    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
562     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
563       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
564    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
565       scheme to use for vorticty-term ;
566     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
567       (with default selectVortScheme, return to original discretisation)
568     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
569    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
570    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
571      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
572      also fix diagnostics VISCAHW & VISCA4W.
573    
574    checkpoint59o
575    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
576    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
577      move a few statemens out the main loop into separate loops
578    o pkg/shelfice:
579      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
580        (kg/m^2/s), does not break tests, because in verification/isomip,
581        rhoConstFresh=rhoConst (by accident)
582      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
583      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
584        new file model/src/seawater.F, so that they are available for all pkgs.
585      - convert potential temperature into in-situ temperature. This changes the
586        isomip tests => update tests
587    o add a flag writePickupAtEnd (default=true) to be able to suppress
588      writing a pickup at the last timestep
589    o tools/mpack-1.6 :
590      - disable automake (not working) and autoconf (not needed).
591      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
592        also cleaner with much less compilation warnings.
593    o pkg/profiles:
594      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
595      (for "less than 32 characters name" compiler requirement)
596    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
597      conditions that have a different sampling frequency than S/T/U/V obcs
598    o pkg/diagnostics (stats-diags):
599      - fix global Min/Max in case 1 processor get only empty tiles
600    o genmake2: replace (4 times)
601         make genmake_tc_1.o >> genmake_warnings 2>&1
602      with
603         COMM="$CC $CFLAGS -c genmake_tc_1.c"
604         echo $COMM >> genmake_warnings
605         $COMM >> genmake_warnings 2>&1
606      to make genmake2 always see the value of CC as specified in the optfile.
607    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
608      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
609      - modify verification advect_cs test to test SOM-advection on CS-grid.
610    o pkg/ctrl:
611      - Rewrite of ctrl_map_ini_ecco.F,
612        introducing a generic routine (ctrl_map_ini_gen.F).
613      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
614    
615    checkpoint59n
616    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
617      number in dedicate array "hdiag":
618      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
619        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
620      - many small changes (integer format) for large number of diagnostics
621      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
622        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
623    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
624      usingSphericalGrid, this allows to define the rotated grid coordinates
625      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
626      geographical coordinates according to the inverse of the rotation defined
627      by the Euler angles, so that Coriolis parameter and online-interpolation by
628      exf works with the geographical coordinates on XC/YC/XG/YG.
629      Naturally, this feature does not work with all packages, so some
630      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
631      profiles), because there the coordinates are assumed to be regular
632      spherical grid coordinates.
633    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
634      - introduce isopycnal diffusion coefficient control.
635    o tools/adjoint_options:
636      - additional control vector components.
637    o pkg/mnc: have mnc create marginally meaning full coordinate variables
638      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
639    o pkg/mypackage:
640      - add example of read/write pickup for state-var ;
641      - add entry points to the main code for state-vars diags & write-pickup.
642    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
643      transitions for useExfYearlyFields
644      - add new subroutine that determines the file to read from for
645        use*YearlyFields = .TRUE. and .FALSE.
646      - add a verification experiment to global_with_exf that tests
647        useExfYearlyFields with USE_EXF_INTERPOLATION defined
648    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
649      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
650      subroutines (which could be generated from a template, because they are
651      almost identical), for now they are included in obcs_prescribe_read.F for
652      simplicity
653    o pkg/exf:
654      - add a little more diagnostic to exf_interp_read (in analogy to
655        mds_read_field, can be turned off with debugLevel < debugLevA=1)
656      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
657        ugly but fast by unrolling short inner loops, inserting a unroll=8
658        directive in routine lagran, and splitting a loop and making do while the
659        outermost loop (the latter requires the intoduction of index arrays)
660    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
661    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
662      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
663    o verification/seaice_obcs: updated for restart test and latest options
664    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
665      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
666      for now this is only available for the C-grid code and also within
667      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
668    
669    checkpoint59m
670    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
671      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
672    o gad_som : fix flux output (& diagnostics) to have same units as other  
673      advection scheme fluxes (was previously multiplied by deltaT).  
674    o added verification/seaice_obcs both to test seaice open boundaries
675      and to provide an example matlab scrpt for generating them
676    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
677    o pkg/salt_plume: clean up salt_plume_frac.F to
678      remove redundancy in PlumeMethod 1 and 4
679    o pkg/kpp: added saltplume diagnostics
680    o pkg/obcs and pkg/seaice:
681      - do not set uice and vice to zero when OB*icefile are unspecified
682      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
683      - moved seaice tracer obcs after call to seaice_growth
684    o pkg/salt_plume: added various options for salt plume depth
685      criterion and for vertical distribution of the salt
686    
687    checkpoint59l
688    o pkg/ptracers: new version of ptracers pickup:
689      read meta file and write only fields which are needed to restart.
690      ( same logic as main pickup file ; also using pickupStrictlyMatch )
691    o pkg/seaice:
692      - add timescale for melting due to warm mixed layer as a means of
693        setting SEAICE_availHeatFrac more conveniently
694      - add a CPP-flag/runtime parameter check for flooding algorithm
695      - reformulated availHeat in seaice_growth.F to be independent of AREA
696    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
697      unit changes
698    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
699    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
700      SX vector computer.
701    o pkg/seaice:
702      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
703        seaice forcing fields can now be read only through pkg/exf
704      - removed some unused halos
705    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
706    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
707      or U/VICE from U/VWIND before computing U/VSTRESS
708    
709    checkpoint59k
710    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
711      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
712    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
713      all experiments pass when compile with un-initialised var. checking option.
714    o added pkg/salt_plume
715    o script to test restart (for now, in MITgcm_contrib/jmc_script)
716    o pkg/seaice: new read/write pickup version.
717      read meta file and write only fields which are needed to restart.
718      ( same logic as main pickup file ; also using pickupStrictlyMatch )
719    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
720    o lab_sea.hb87: modify the domain & update output.hb87.txt :
721      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
722      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
723      process. Fixed here by closing the domain at the Northern boundary.
724    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
725    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
726      a set of consecutive levels in/from a 3-D array.
727    o pkg/ptracers:
728      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
729      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
730    
731    checkpoint59j
732    o in pkgs: dic, obcs, offline, rbcs:
733      standard way to compute coeff. for time interpolation between 2 time reccords
734      which retains full precision (& make results less dependent on compiler).
735      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
736    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
737      packages instead of reading ice cover and wind speed separately
738    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
739     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
740      to allow to compile customized code before the update)
741    o cleaning-up:
742      - fix CPP instruction syntax in pkg/obcs
743      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
744        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
745      - fix some threads issue in IO parts.
746    o pkg/dic:
747      - add tons of "_d 0" (--> much better testreports !)
748       and then update outputs of tutorial_global_oce_biogeo
749    o pkg/mom_fluxform:
750      add a special version of momentum advection intended to conserve momentum
751      next to a bathymetry step or a coastline edge. (default = off = #undef)
752    o new read/write pickup version:
753      - for now, only implemented for main (mdsio) pickup file.
754      - write out only what is needed to restart; merge pickup_nh , pickup_ph
755        and main pickup together.
756      - read meta file; read only what is needed to restart; stop if a field
757        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
758        if it make sense (even if the restart is not perfect).
759      - if no meta file, assume that pickup to read corresponds exactly to
760        a pickup that would currently be written.
761      - read pickup written in the old format (until checkpoint59i) if it
762        recognizes an old meta file (no field-list).
763      - add a meta file in exp. which starts from a pickup: 2 cases:
764        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
765         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
766        b) a meta file describing the content of the associated pickup file
767         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
768    o pkg/mdsio & pkg/rw:
769      - new routine to read a meta file ; new set of routine to read
770        Multiple-fields file (with meta file).
771    o added open boundary conditions capability for seaice
772        HSNOW, HSALT, UICE, and VICE
773    
774    checkpoint59i
775    o adjoint:
776      * fix multiDimAdvection adjoint
777        (partial recomputation problem by TAF for fVerT(:,:,kDown)
778        and comlev1 size definition (maxpass vs. max. number of tracers)
779      * verification/global_ocean.90x45x15 adjoint now tests
780        NLFS and multiDimAdvection using DST3 (=30)
781      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
782    o pkg/kpp: add "_d 0" to real constant (if missing);
783      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
784      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
785    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
786      for internal parameters related to restart process (formerly from PARAMS.h)
787      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
788    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
789      as argument. (only atm2d & obcs write_pickup have not yet been updated)
790    o pkg/monitor:
791      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
792      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
793      - account for deep Atmosphere factor and density factor (anelastic)
794    o added open boundary conditions capability for seaice HEFF and AREA
795    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
796      thermodynamics
797      - requires a little reorganization, which affects the testreport results
798        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
799        so that now the conservative form is tested
800      - add a few comments
801    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
802    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
803    o add new diagnostics to seaice: advective, diffusive fluxes (only for
804      multidim-advection, for scheme 2 they are not filled) and transports,
805      thermodynamic growth rates
806    o change units of EmPmR (inside the code, + within coupling interface)
807      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
808      Affects results @ truncation level (cg2d match) and update output of
809       experiments: lab_sea(6), global_ocean.90x40x15(10),
810      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
811      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
812      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
813      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
814    
815    checkpoint59h
816    o pkg/exf:
817      - improve vectorization by moving if-statement out of loops in
818        exf_mapfields, exf_radiation
819      - exf_bulkformulae.F: introduce 2D fields and vectorize code
820    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
821    o testreport:
822      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
823        monitor & update offline_exf_seaice exp. output.
824      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
825    o pkg/seaice:
826      - bug fix in the evp solver: boundary conditions were affected be
827        masking of zMax/zMin (changes results)
828      - minor bug fix in boundary conditions in seaice_calc_strainrates
829        (changes results for no_slip)
830      - seaice_lsr.F: make interpolation of eta dependent on boundaries
831      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
832      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
833        stress formulation and no-slip boundary conditions
834    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
835      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
836    o pkg/seaice: a first HSALT time stepping equation has been checked in
837    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
838      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
839      without requiring DO-IF statements
840    o pkg/thsice:
841      use continuous power-law function for partition of energy between lateral
842      melting/freezing and thinning/thickening ; old code using step function
843      still available with #undef THSICE_FRACEN_POWERLAW
844      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
845    o testreport: change AD testing : check against results/output_adm.txt
846      using same scripts as for forward test.
847    
848    checkpoint59g
849    o adjoint testing: in preparation for changing testreport:
850      - output format: cost and grad written on separated lines
851      - ad output results in directory "results" (instead of "results_ad")
852    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
853    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
854    o pkg/ecco: allow user defined cost function contributions
855    o testreport:
856      Allow to choose (per experiment) the list of tested output variables
857       and the main variable (used to issue a pass/FAIL ) ;
858      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
859      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
860      Also modify printing of summary:
861       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
862       b) echo the list of tested variables in the individual summary.txt of
863          each experiment.
864    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
865      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
866      (but still depend on the tile decompostion of the domain).
867    o pkg/seaice: change a discretization detail to make the B-grid code
868      "more symmetric". This change is likely to remove all "ridges/leads" that
869      where quasi-aligned with the grid in B-grid solutions. It may also be
870      the solution to the stress coupling issues with the B-grid.
871    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
872      remove .cvsignore from input dir. (since testreport no longer run here).
873    o pkg/thsice:
874     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
875     - fix reshaping of sea-ice just after advection:
876       melt all the ice only if ice-volume is too small.
877     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
878       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
879     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
880    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
881      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
882    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
883      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
884      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
885      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
886      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
887      -> update output.txt
888    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
889     this affects truncation error: -> update output.txt of exp:
890      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
891      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
892    
893    checkpoint59f
894    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
895    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
896      a bounded range (in forward mode)
897    o pkg/ecco, ctrl, autodiff and mom_common:
898     internal parameter controls, completements of implementations
899    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
900    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
901      (not seem any difference in testing results).
902    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
903       at face corners.
904    o pkg/generic_advdiff:
905     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
906      loop range indices for computing vertical advection tendency
907      and do the calculation in the interior only (no overlap) ;
908      for now, only implemented for SOM advection (to save CPU time).
909     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
910    o exch2 adjoint
911      First set of changes:
912      - add exch2 hand-written adjoint templates
913      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
914        This will require cleanup in pkg/autodiff/*.F
915        (changed routines currently kept separate in verif. code/)
916      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
917        that used to hide exch2 or cubed-sphere specific code
918        (commented via 'cph-exch2')
919    o pkg/seaice
920      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
921    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
922       output of global_ocean.cs32x15.thsice .
923    
924    checkpoint59e
925    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
926      for B-grid vector (not yet tested) and C-grid vector (<- only used
927      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
928    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
929      (#ifdef ALLOW_SALT_PLUME)
930    o gather_2d/scatter_2d: removed halo regions
931    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
932      scheme and the corresponding test case (under front_relax dir). For now,
933      only available with Skew-flux form and not yet tested in realistic set-up.
934      adjoint: store directives updated, but gradient checks deteriorated,
935      so maybe GM/Redi adjoint is now broken.
936    o seaice adjoint
937      * add AREA, HEFF, HSNOW as control variable
938        (should not change lab_sea results)
939      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
940    o pkg/seaice:
941      * added computation of saltFlux in seaice_growth;
942        For time being, sea ice salinity is assumed constant
943        contribution of snow flooding to freshening of sea ice is neglected.
944        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
945        defaults to 0.0 in order to maintain backward compatibility.
946        Typical values for SEAICE_salinity are 4 to 10 g/kg.
947      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
948      * added SEAICE_availHeatFrac, which specifies fraction of surface level
949        heat content used to melt or grow ice
950      * commented out cap of HICE: it helps keep ice thinner
951      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
952      * applied OBCS T/S mask to HEFFM sea ice mask
953    
954    checkpoint59d
955    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
956     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
957     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
958    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
959     and change default value of parameter "GM_Small_Number";
960     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
961       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
962       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
963    o pkg/ecco: cost function when applying pkg/smooth to controls
964    o pkg/ctrl: add forcingPrecond run time parameter
965    o pkg/seaice:
966     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
967     - fix bug in metric terms of u-equation in LSR solver (implicit part),
968       changes verification/lab_sea
969     - rearrange implicit part of u-equation in LSR solver to make it easier to
970       read, understand, and debug. This causes changes at the truncation level.
971     - fix (serious) bug in the boundary conditions (sign error in the implicit
972       part) of the LSR solver. Changes all LSR results.
973     - fixed problem with HSNOW initialization to avoid thick snow when AREA
974       is initilized with small values - does not change lab_sea results.
975     - added HsnowFile initialization capability
976    o pkg/smooth: addition to model/src and pkg/ctrl so allow
977     initialization of pkg/smooth and application to control vector
978    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
979    o dependencies: pkg/profiles requires pkg/cal
980    o pkg/profiles:
981     - added option ALLOW_PROFILES_GENERICGRID
982         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
983         that interpolation information (grid points and coefficients) is provided
984         within the netcdf input files.
985         -> sample matlab scripts can be found in MITgcm_contrib/gael
986         that allow you to prepare netcdf input files.
987     - also modified: cleaner include statements, cleaner error print statements,
988       cleaner stops when error, and more tests of the netcdf input files consistency.
989    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
990    o pkg/seaice:
991     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
992       requires a new routine: seaice_diagnostics_fill.F
993     - make sure that seaice does not move if not forced (pressure replacement
994       method, Hibler and Ip, 1995), changes results
995     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
996     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
997       It is turned off by default (=-1.), because it changes the results.
998     - make it possible to read AREA from a file, too.
999    
1000    checkpoint59c
1001    o add S/R and diagnostics for oceanic mixed-layer depth
1002    o move GMRedi call after all vertical mixing schemes (including KPP)
1003    o pkg/thsice:
1004     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1005      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1006    o pkg/obcs:
1007     - bug fix for balance code
1008    o pkg/seaice:
1009      - allow values of SEAICE_elasticParm > 1
1010      - add new parameter SEAICE_evpTauRelax as an alternative
1011        to SEAICE_elasticParm
1012      - make lsr boundary conditions free slip (by default), changes result
1013      - add code for no slip boundary conditions for lsr
1014      - set minimum of zeta to zero (and not 4e8) (changes results)
1015      - add a cap on AREA after advecting AREA if seaice_growth is not called
1016    o change calculation of Visbeck K:
1017      - no longer depend on tapering scheme; instead, compute slope (limited
1018        by GM_maxSlope). this is equivalent to what was comuted before with
1019        clipping or linear tappering.
1020      - fix vertical averaging (wrong by 1/2 level)
1021      - leave the old version (but will not be maintained) within
1022        #ifdef OLD_VISBECK_CALC / #endif
1023      - update output of exp. ideal_2D_oce
1024    o change error catch in calc_r_star to improve vectorization
1025    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1026      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1027    o adjoint:
1028      Re-organized adjoint checkpointing according to Matt Mazloff
1029      (but with modifs/completions/cleanups)
1030      Storing is now bundled into large arrays to optimized I/O
1031      (and second step in cleanup of the_main_loop)
1032    
1033    checkpoint59b
1034    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1035      - export/import (between ocean & coupler) fields needed for ocean DIC.
1036    o pkg/seaice:
1037      - get rid of three more exchanges seaice_calc_viscosities (required
1038        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1039      - bug fix in seaice_ocean_stress (update of lab_sea required)
1040      - reduce loop boundaries to necessary minimum also in seaice_evp
1041      - go back to the old way of computing deltaC/Z as the adjoint likes that
1042        better
1043    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1044      passive tracer to an Age Tracer) + update output.txt
1045    o pkg/exf:
1046      - implement A-grid / C-grid selection for wind-stress input files.
1047      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1048      for now, in exf_bulk_largeyeager04.F only :
1049      - change implementation for case where windspeed + 2. components wind-stress
1050        are read-in. AND use rhoConstFresh to convert evap.
1051    o pkg/seaice:
1052      - use correct EXCH_UV for wind-forcing (on A-grid).
1053      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1054        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1055    o pkg/exf:
1056      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1057      EXF_INTERPOLATION:
1058      - merge global_with_exf/code version of exf_interp_read.F
1059        to the main code ;
1060      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1061        reading the file ; Important: This options needs to be defined to recover
1062        previous code.
1063        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1064      - no longer loose real*8 precision along the way when using exf_iprec=64.
1065    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1066      - change discretisation of evp-solver in order to avoid another exchange
1067        (changes lab_sea) and clean up a little
1068      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1069        help the adjoint (this also changes the results slightly)
1070      - add a few "_d 0" where they had been missing in seaice_evp.F
1071      - cleaning up: remove unused seaice_calc_rhs.F
1072    o pkg/exf: some cleaning-up:
1073      - change various "constants" into runtime parameters
1074      - cleaned-up Large&Yeager04 routine which should eventually
1075        replace exf_bulkformulae.F (changed names of S/R and CPP)
1076        and merged various ALLOW_ATM_WIND options
1077     only used with thsice pkg (in thsice_get_exf.F):
1078      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1079        which are used when useStabilityFct_overIce=TRUE (= the default)
1080      - change default values of ice & snow emissivity and scale downward LW
1081        by ice & snow emissivity.
1082    o pkg/thsice:
1083     fix few little problems, in thsice_calc_thickn.F:
1084      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1085      - melt only laterally if hIce < hThinIce (as the comments say)
1086      and in thsice_extend.F:
1087      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1088      - start to form ice as soon as the minimum ice-volume is reachable.
1089     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1090      and cpl_aim+ocn
1091    o pkg/kpp
1092     - move computation of surface related input fields to KPP into a new
1093       subroutine kpp_forcing_surf.F
1094     - remove wrong (within bi,bj loops) EXCH calls.
1095     - little cleaning (add argument myThid in last position, cvs header ...)
1096     - for now, fix conservation problem by exchanging KPPviscAz (may not
1097       be the best fix)
1098    o pkg/seaice
1099     - check for inconsistent evp parameter/cpp-flag combination
1100     - remove leftover errIO flat for obsolete name list error handling
1101    o OpenAD
1102     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1103    
1104    checkpoint59a
1105    o pkg/seaice: some parameter clarifications and a little bit of clean up
1106    o pkg/thsice: rename run-time parameters:
1107       himin       -> hIceMin
1108       himin0      -> hThinIce
1109       hihig       -> hThickIce
1110       i0          -> i0swFrac
1111       transCoef   -> bMeltCoef
1112       frac_energy -> fracMelting
1113      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1114       with default values (for now) that do not change the results.
1115      remove old version of thsice vars advection in pkg/seaice.
1116    o in FFIELDS.h:
1117      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1118      - make pLoad & sIceLoad always available (but still only used if
1119         ATMOSPHERIC_LOADING is #define).
1120    o pkg/kpp: replaced _KPP_RL with _RL
1121    o bug fixes for vertical diffusivity computations when both KPP and
1122        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1123        are no longer updating the vertical diffusivity array
1124        (passed as argument) but are (re-) setting those arrays.
1125    o pkg/seaice: fix bug in evp solver, while doing that
1126      - change (improve?) discretization of stress computations for both
1127        cgrid-lsr and evp solver
1128      - add a new routine to compute strain rates
1129      - the above changes lab_sea results
1130      - add no slip conditions for evp solver (off by default), lsr-version
1131        may follow
1132      - fix exchange for shear at Z-points (does not change lab_sea)
1133      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1134        (to force the user to pick a time step since there is not "safe" way
1135        of choosing it)
1136      - add principal stress diagnostics
1137      - rearrange fields for evp a little to avoid having to call a: too many
1138        exchanges and b: exchanges for stress trensor components which we do
1139        not have.
1140      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1141        of evp, complete rewrite for lsr case (latter is does not yet work
1142        in all cases)
1143    o pkg/kpp: add code to have mixing in shelf ice caverns
1144      - add myThid to all kpp routines (long overdue)
1145    
1146    checkpoint59
1147    o pkg/exf:
1148      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1149        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1150      - move exf header files from lower_case.h to UPPER_CASE.h ;
1151        add missing cvs Header & Name
1152      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1153      - add namelist param. selectStressGridPosition, exf_monFreq
1154      - retire many _CLIM routines, and remove data.exf_clim
1155        + params moved to data.exf
1156        + climsst, climsss now handled by exf_set_gen, i.e.
1157          climss?period=0 refers to constant field,
1158          climss?period=-12 to monthly forcing
1159      - split up namelists in data.exf
1160    o pkg/seaice:
1161      - remove seaice_exch and seaice_exch_uv
1162      - remove superfluous exchange of theta
1163      - add myThid to seaice_budget_ocean/ice
1164      - add new interface for atmospheric wind forcing (C-grid only)
1165        + new routine
1166        + two new field (taux, tauy for stress over ice)
1167        + removed one global field (DAIRN) for C-grid case only
1168    o pkg/thsise
1169      - 2nd set of modifs for thsice adjoint in conjunction with exf
1170    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1171    
1172    checkpoint58y_post
1173    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1174      vertical diffusivity, similar to that in MOM4; turned on using
1175      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1176      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1177    o Added capability for 3D specification of background vertical diffusion
1178      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1179      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1180      "data" file that contains the 3D vertical diffusivity coefficients.
1181    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1182      - add code within pkg thsice to advect & diffuse sea-ice fields
1183      similar to (and will replace) what has been added in  seaice_advdiff.F,
1184      but: - conserving Mass, Heat & Salt.
1185           - better when using non-linear advection scheme (not yet fully tested)
1186           - can also be used in atmospheric set-up (for now, only the diffusion).
1187    
1188    checkpoint58x_post
1189    o IO option for global-file compact format:
1190      - add options when generating topology (utils/exch2/matlab-topology-generator)
1191      - add I/O capability (pkg/mdsio).
1192      - adapt utils/matlab/rdmds.m to read this format.
1193      for now long-line format not yet supported by pkg/mdsio (& exch2).
1194    o shelfice: add a few diagnostics
1195    
1196    checkpoint58w_post
1197    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1198      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1199      (and replace horiVertRatio in NH code).
1200      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1201                         and tutorial_plume_on_slope (sensitive to truncation)
1202    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1203      directly to drive seaice model (C-grid only)
1204    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1205     - reintroduce computation of wind from stress,
1206     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1207       mass points to avoid tau = 0
1208     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1209    o rdmnc.m: make it work with "global" files created with gluemnc
1210    o rdmnc.m : some improvements in dealing with singleton dimension
1211      (tested on all testreport mnc output files).
1212    o genmake2: disable pkg/profiles if netcdf test fails.
1213    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1214    o move call to cal_readparms up to make calendar parameters/variable available
1215      to all packages
1216    
1217    checkpoint58v_post
1218    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1219      useDynP_inEos_Zc tested.
1220    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1221    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1222      and portions thereof.  See read_cs.txt for description and examples.
1223    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1224      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1225      following the great-circle arc between those 2 points.
1226    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1227      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1228    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1229     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1230     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1231     - still needs work (not working with some options ; efficiency to improve)
1232       and serious testing.
1233     - use this scheme for temperature & salinity in 2 advection test exp.:
1234       advect_xy & advect_xz, respectively.
1235    
1236    checkpoint58u_post
1237    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1238    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1239    o testreport: add option "-skipdir" to skip some test.
1240    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1241      momentum calculation.
1242    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1243    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1244      remove checkpoint.F and the_correction_step.F (no longer used);
1245      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1246    o add option (linFSConserveTr) to correct for tracer source/sink due to
1247      Linear Free surface
1248    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1249    o pkg/thsice: fix reading mnc-pickups
1250    
1251    checkpoint58t_post
1252    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1253    o pkg/mdsio:
1254     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1255       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1256       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1257     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1258     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1259       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1260     - new S/R (to replace MDSWRITEMETA), which allows to write more
1261       informations (variable names, time ...) to meta files.
1262     - modify rdmds.m to give back the meta file content.
1263    o pkg/diagnostics: change vertical interpolation to be safer, and more
1264       flexible (define p-levels to interpolate to in data.diagnostics);
1265      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1266       diagnostic pointer.
1267    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1268    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1269    o fix multi-category seaice:
1270     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1271       SEAICE_MULTICATEGORY
1272     - fix short wave heat flux
1273    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1274       and allow to use EVP solver. Change forward lab_sea: test both EVP
1275       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1276    o Initial check-in of lab_sea adjoint
1277      (very similar to natl_box_adjoint/code_seaice)
1278      * used C-grid and EVP solver
1279      * used KPP, GM/Redi
1280      * uses inAdExact=.TRUE.
1281      * gradient checks fail for both ADM and TLM
1282        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1283        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1284        issue is related to forward mismatch between g77 an ifort
1285    o pkg/seaice: overhaul of thermodynamics
1286     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1287     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1288     - move a few global fields out of SEAICE.h into seaice_growth.F and
1289       make them 2D (FICE/QNETO/ ...)
1290     - remove FO (it is the same as QNETO)
1291     - introduce a few local fields to avoid modifying external fields such
1292       as atemp, etc.
1293    
1294    checkpoint58s_post
1295    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1296      changed exf_set_gen.F so that
1297        genperiod=0 means input file is one time-constant field and
1298        genperiod=-12 means input file contains 12 monthly means
1299    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1300      this affects truncation error ; generate new output file for exp. which
1301      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1302        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1303        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1304        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1305        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1306        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1307    o start implementation of deep-atmosphere and anelastic formulation
1308    o verification: remove 2nd copy of input files and use script "prepare_run"
1309      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1310    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1311    o profiles: fix for multithreaded case
1312    
1313    o diagnostics: rename few diags:
1314      s/'PRESSURE'/'RCENTER '/g
1315      s/'TICE    '/'oceFreez'/g
1316      s/'TAUX    '/'oceTAUX '/g
1317      s/'TAUY    '/'oceTAUY '/g
1318      s/'SWFLUX  '/'oceQsw  '/g
1319      s/DIFx/DFxE/g
1320      s/DIFy/DFyE/g
1321      and add few ocean-forcing diagnostics:
1322      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1323    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1324      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1325      as actual snow thickness.  It now refers everywhere to effective snow
1326      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1327    
1328    checkpoint58r_post
1329    o modifications to pkg/seaice/growth.F, which change results of
1330      lab_sea experiment: fixes pertain to melting snow over open water, to
1331      masking EVAP under sea ice, and to using the correct AREA variable for
1332      computations of EVAP, PRECIP, HSNOW, and GHEFF
1333    o add ability to read bathy, salt, and theta using MNC (off by def)
1334    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1335      both are turned off by default and do no change any results
1336    o seaice advection with pkg/thsice: a step toward the use of non-linear
1337      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1338    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1339      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1340      in natl_box (affects results @ truncation level: update output.txt)
1341    o multi-threading and IO:
1342      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1343      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1344        (needed to work with SingleCpuIO): tested in all verif. exp.
1345    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1346      affects the results (but none of the verification test uses this scheme).
1347    o Adding some pkg/diagnostics capability to pkg/seaice
1348      (will certainly be subject to changes)
1349    o ctrl: adding new control variables:
1350      lwflux, lwdown, evap, snowprecip, apressure, runoff
1351    
1352    checkpoint58q_post
1353    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1354      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1355      high_res_cube configuration by 4% on Columbia.
1356    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1357      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1358      dynamical allocation (seems to work in multi-threaded).
1359    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1360      single CPU io) so that TAF does not have to see EESUPPORT.h
1361    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1362    
1363    checkpoint58p_post
1364    o obcs: stop if obcs is used with useCDscheme = .true.
1365    o shelfice:
1366     - fix a sign error so that no slip at shelfice interface works
1367     - remove stop for combination non-hydrostatic code and shelfice. That does
1368       not mean, that the results are correct, but at least they are numerically
1369       stable
1370    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1371    o added adjoint exch routined for all exch*3d* routines
1372      and updated flow directives
1373    
1374    checkpoint58o_post
1375    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1376      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1377    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1378      and clean-up reading/writing of pickup files.
1379    o fix local version of read/write pickup (NH part) in rotating_tank/code
1380    o simplify EXCH interface:
1381     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1382     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1383    o added the regrid package
1384    o shelfice:
1385     - add a simple boundary layer scheme to reduce noise
1386     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1387    
1388    checkpoint58n_post
1389    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1390       local variable (not in common block).
1391    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1392      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1393      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1394        to work with SingleCpuIO.
1395    o add "_d 0" to real constant of pkg/cfc subroutines ;
1396       update exp. cfc_exemple & tutorial_cfc_offline output files.
1397    o multi-threading and IO:
1398      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1399        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1400      - barrier before and after reading.
1401      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1402      - avoid using MDS_WRITELOCAL for LAND pkg output.
1403      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1404        common-block variables ; Allows multi-threading with master-thread IO.
1405    o change default MAX_NO_THREADS from 32 to 4 ;
1406      and stop cleanly when MAX_NO_THREADS is too small.
1407    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1408    
1409    checkpoint58m_post
1410    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1411       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1412    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1413       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1414       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1415    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1416        add MITgcm_tutorials (= code + all the tutorials)
1417    o ecco, option to compute cost for total ssh (mean+anom)
1418    o consistent with addition of ptracer and ssh in pkg/profiles
1419    o profiles: adding ptracer and ssh
1420    o testreport: change multi-test output-file name
1421      (from output.txt.{name} to output.{name}.txt)
1422    o profiles: now ok for mutli-tiles case
1423    o seaice: add 4 parameters for different advection schemes for area,
1424      (effective) seaice thickness, enthalphy, and snow height. Their default
1425      is the standard parameter SEAICEadvScheme
1426    o calc_gw:
1427     - add cosFacU in zonal viscous flux (harmonic.visc.).
1428     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1429       of tutorial_plume_on_slope.
1430    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1431    o calc_gw: true flux-form, account for horizontal grid spacing.
1432      update rotating_tank results, but not plume_on_slope (affected at
1433      truncation level, 11 digits).
1434    
1435    checkpoint58l_post
1436    o calc_gw:
1437     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1438     - remove side-drag for now (need to fix it); update plume_on_slope results.
1439     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1440    o commit code to make SST/SSS weights spatially variable
1441      (based on either variable in-situ or variable initial T/S weights)
1442    o pkg/ecco:
1443      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1444        now based on horizontally varying weights wthetaLev, wsaltLev
1445      * cost_averagesflags now returns year indices in addition to day, month
1446      * sflux balance is performed on annual basis
1447        (sflxumm, sfluxmm2, bal_sfluxmm)
1448      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1449        including separate counting and multipliers
1450    o pkg/rbcs
1451      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1452    
1453    checkpoint58k_post
1454    o testreport:
1455     - always build in dir. "build" (if not there, mkdir build instead of building
1456       & running in input)
1457     - run in dir run (if it exists), in build otherwise.
1458     - call prepare_run (if input/prepare_run exists)
1459     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1460    o pkg/exf modifications to interpolation and rotation routines for more
1461       reasonable treatment of North Pole singularity: for tracers North Pole
1462       value is set to northernmost zonal-mean value, for zonal velocity it is
1463       set to zero, and for meridional velocity it is set to northernmost value.
1464    o pkg/exf/exf_check_range.F
1465     - add tile index to diagnostics and move stop statement to the very
1466       end of the routine.
1467    o pkg/diagnostics: (diagnostics_main_init.F)
1468      define title of isomorphic variables according to the current config.
1469    o pkg/thsice with pkg/seaice dynamics:
1470    - fix domain of computation (interior only, required for exf) and do exchanges
1471    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1472    o towards a standard way of dealing with multi-threading in MONITOR
1473      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1474    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1475       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1476    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1477    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1478    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1479       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1480    o tracer advection:
1481     - clean-up and simplify calc_common_factors.F
1482     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1483       advection subroutine (but still not used within DST advection S/R)
1484    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1485    
1486    checkpoint58j_post
1487    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1488      from file (collects calls previously in FORWARD_STEP)
1489    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1490    o adjoint store dir. adjusted accordingly
1491    o genmake2
1492      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1493    
1494    checkpoint58i_post
1495    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1496      on wind stress (SEAICEstressFactor defaults to 1.)
1497    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1498      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1499    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1500      on CS-grid: no longer loosing mass.
1501    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1502    o pkg/ggl90: fix sloppy output and fix a bug
1503    o pkg/seaice: added SEAICEuseEVPpickup parameter
1504      - Set to false in order to start EVP solver with
1505        non-EVP pickup files when using SEAICEuseEVP
1506      - fix sign error in diffusion in seaice_calc_rhs
1507    
1508    checkpoint58h_post
1509    * Modifications for bottom topography control
1510      o replace hFacC by _hFacC at various places
1511      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1512      o add non-self-adjoint cg2d_nsa
1513      o update autodiff support routines
1514      o re-initialise hfac after ctrl_depth_ini
1515      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1516    * Adding verification for 5x5 box (4-layer) bottom topography control
1517    
1518    checkpoint58g_post
1519    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1520       used for mean seasonal cycle, mean diurnal cycle); add an example
1521       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1522    o pkg/ggl90:
1523      - add parameter (minimum surface kinetic energy)
1524      - fix bug (avoiding division by zero)
1525    o couple pkg/thsice to pkg/seaice:
1526      - modify advection in seaice to accomodate new scalar fields to be advected
1527      - only muliDimAdection scheme work with seaice/thsice
1528      - mapping of thsice-variables to seaice-variables, back and forth
1529      - does not break the verification experiments, but does not give the
1530        desired results either
1531    o pkg/seaice
1532      - make (default) second order advection a bit less confusing?
1533    
1534    checkpoint58f_post
1535    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1536      to pkg/seaice):
1537      - new routines thsice_map_exf and thsice_get_exf provide the interface
1538      - add an additional formal parameter to thsice_solve4temp
1539    o pkg/exf:
1540      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1541      - correct Stefan-Boltzmann constant
1542      - new parameter for longwave surface emittance
1543      - separate some stuff from exf_bulkformulae into new routines  
1544        exf_radiation, exf_wind
1545      - add new parameters and constants: longwave emissivity for ocean, ice
1546        and snow, evaporation parameters over ice
1547      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1548        either wind from stress or stress from wind
1549    o pkg/thSIce:
1550    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1551    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1552       and THSICE_CALC_THICKN
1553    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1554    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1555      to make debugging easier.
1556    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1557    o pkg/bulk_force:
1558      - clean-up comments and parameters ;
1559      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1560    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1561      generate new output for test-experiment: aim.5l_cs.thSI
1562    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1563      testreport accordingly
1564    
1565    checkpoint58e_post
1566    o SEAICE_CGRID adjoint done
1567    o R_STAR adjoint implemented.
1568      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1569      * need to sort out init. of h0facc, etc.
1570    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1571      to be able to use it in pure forward.
1572    
1573    checkpoint58d_post
1574    o upgrade simple test-experiment to tutorial example:
1575     step.1: duplicate the experiment and (step.2) will remove the old copy.
1576      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1577      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1578      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1579      tutorial_global_oce_biogeo    <- copy of dic_example
1580      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1581      tutorial_plume_on_slope       <- copy of plume_on_slope
1582      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1583      tutorial_global_oce_optim     <- empty for now (David ?)
1584      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1585     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1586    o correct a sign problem in cost_scat.F
1587    o obcs and ptracers: fix boundary conditions for advections schemes
1588      with larger stencil
1589    o thsice adjoint: start
1590    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1591      completeness
1592    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1593      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1594    o ptracers adjoint:
1595      * avoid extensive recomputatations
1596      * fix missing re-init. of gptr (missed by TAF)
1597    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1598      me to turn off the excessive output to STDOUT that this package produces
1599    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1600      and add those terms in Vector-Invariant formulation.
1601    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1602      if the control period (xx_hfluxperiod etc) is 0
1603    o in profiles pkg, clean routines and fix details
1604    o in ecco pkg, reading ssh data:
1605      fix problem in case the model does not start at iter0=0
1606    o fix mnc-pickup/restart for ptracers
1607    o new package prifiles:
1608      code to compute profile-based cost by Gael Forget
1609      (modifs in ecco, ctrl, autodiff)
1610    o Benign bug fix in initialization (spotted by M. Mazloff) of
1611      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1612    
1613    checkpoint58c_post
1614    o adjoint: finish NLFS adjoint and provide reference output in
1615      verification/global_ocean.90x40x15/results_ad_nlfs
1616    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1617      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1618      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1619      with SEAICE_CGRID defined.
1620    o move calendarDumps from "data" to "data.cal" and clean-up the code
1621      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1622    o add useEXF & useCAL flags (for now, set in hard-coded way)
1623    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1624      (were missing in NH mode, and wrong in quasihydrostatic mode).
1625      waiting for Chris updated version of calc_gw to add those CALLs.
1626    o fix bug in quasihydrostatic S/R ;
1627      add a test for this option: global_ocean.90x40x15.qshyd
1628    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1629      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1630    o add on/off flag useOffLine for package OFFLINE
1631    o seaice:
1632      - modify advection so that it works also on the C-grid
1633      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1634        problem in multi-tile runs with C-grid
1635      - add flags for clipping ice velocities and/or masking solver forcing
1636      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1637        C-grid solver
1638      - added a few comments to seaice_diffusion.F
1639      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1640        are now exclusive)
1641      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1642        required re-ordering the code a little:
1643       + make DAIRN global variable (defined in SEAICE)
1644       + move computation of the viscosities eta and zeta into a new separate
1645         routine (because I need to recompute them in seaice_ocean_stress.F)
1646    
1647    checkpoint58b_post
1648    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1649      update output.txt of exp. aim.5l_cs.thSI
1650    o various mnc cleanups and improvements:
1651      + shrink lookup tables by factor of ~4
1652      + better error reporting when running out of lookup space
1653      + able to handle longer path/file names (up to 500 chars)
1654    o adjoint:
1655      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1656      - TBD: "hidden" mom_vecinv recomp. in dynamics
1657    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1658     (allow to differentiate between forcing components using new integer flags:
1659      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1660     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1661    o ecco
1662      - enable trend removal from SSH anomaly obs.
1663    o adjoint
1664      - a fix for PmEpR when #undef EXACT_CONSERV
1665      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1666      - try to fix "hidden" recomp. in forward_step for NLFS
1667        (NLFS seems broken sometimes after I checked it in)
1668    o seaice:
1669     - add c-grid version of the dynamic solver:
1670       + three new routines that are the c-grid substitute lsr, dynsolver
1671         and ostres
1672       + put a few fields that were local to dynsolver into global common
1673         blocks, so that I can move the computation of stresses etc into
1674         seaice_lsr (saves coding but may break the adjoint).
1675     - replace more hardwired parameters by runtime parameters
1676     - add ice masks that mask the rhs of the implicit solvers where there
1677       is no ice (commented out in seaice_dynsolver, because i am not sure
1678       if this works properly), eventually this should replace the clipping
1679       of ice velocities in seaice_dynsolver to +/-40cm/s.
1680    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1681      include it only where its needed
1682    o move balancing of fluxes before the call of external_forcing_surf
1683    o seaice:
1684      - correct units of turning angles (now they are really in degrees)
1685      - move computation of GWATX/Y out of main routine into dynsolver
1686      - initialize GWATX/Y in seaice_init
1687    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1688      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1689    o seaice: add runtime flags for turning angles (default to zero)
1690    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1691      and trend from exf forcing and ctrl control adjustments
1692    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1693      (since checkpoint57x_post)
1694    o change the default rotation period to 86164.s = the Earth rotation
1695    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1696      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1697    o seaice advection: add code for choosing between the default (2nd order
1698      central differences) and multiDim advection schemes provided by
1699      pkg/generic_advdiff
1700    o seaice:
1701      - removed all references to SEAICE_GRID.h fields from
1702        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1703        (cubed-sphere configuration will change a little)
1704      - grid computations in seaice_init are obsolete now.
1705      - cleaned up code a little so that is easier to read (hopefully).
1706      - added new (better?) discretizations of default advection and diffusion
1707        (turn on with SEAICEuseFluxForm)
1708      - replace 1 in 3d global fields by kSurface in growth.F
1709      
1710    checkpoint58a_post
1711    o seaice:
1712      - bug fix in advect.F
1713    o shelfice:
1714      - separate shelfice load anomaly from pload (breaks with time
1715        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1716        Its default is 0., but it may be computed more cleverly from (unknown)
1717        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1718        done offline. A good approximation of the pressure load anomaly is
1719        necessary to avoid large initial adjustment processes underneath
1720        deep-reaching shelfice.
1721      - small fix in ISOMIP shelfice_thermodynamics
1722      - add more sophisticated thermodynamics of Hellmer (1989), this is
1723        now the default
1724      - give a few constants more intuitive names
1725    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1726      if bulk formulae are used in long integration (especially EmPmR). Turn
1727      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1728      if balancePrintMean, the imbalance that is substracted is printed to
1729      STDOUT.
1730    o fix bug (typo) in obcs_apply_eta.F
1731    o add a new package shelfice which enables us to model the circulation
1732      underneath shelf-ice with draughts of hundreds of meters.
1733     - works
1734     - to do: + include improved thermodynamics
1735              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1736                instead of new field kTopC
1737              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1738                instead of new field R_shelfIce and new code in ini_depth.F
1739                and ini_mask_etc.F?
1740              + adjust vertical mixing schemes?
1741    o seaice pkg:
1742     - add a cpp-flag to include a simple formula for a salinity dependent
1743       freezing point of sea water at the surface
1744     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1745       meridional stresses are now different (and hopefully correct)
1746    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1747       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1748       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1749    o pkg/diagnostics: add options and parameters for regional-statistics
1750       diagnostics ; define regions by reading a region-mask from a file
1751       (might add other options later)
1752    o pkg/bulk_force:
1753     - add option and parameters to use AIM surface-flux formulae.
1754     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1755       others forcing fields (defined in PARM05, parameter file "data") are loaded
1756       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1757     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1758     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1759     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1760       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1761     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1762    
1763    checkpoint58
1764    o add "--embed-source" option to genmake2 which, when the supporting
1765      tools can be compiled (as determined by genmake2) will turn on the
1766      embed_files package which then embeds the entire MITgcm source code
1767      (*.[fFhc] + Makefile) used for the build within the executable
1768      - requested by CNH but off by default
1769      - adds a paltry <9MB to the mitgcmuv executable in most cases
1770      - only writes the output when useEMBEDSRC in eedata is true
1771    o clean up 3-dim. relaxation codes:
1772      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1773      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1774      * Thanks to Tom Haine for testing!
1775    
1776    checkpoint57z_post
1777    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1778      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1779    o fix the pickup behavior for obcs in combination with ptracers
1780    o fix a bug in ptracers_external_fields_load
1781    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1782      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1783    o transfered surface NH pressure to eta field (if exactConserv).
1784    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1785         and update lab_sea output.txt file.
1786    o completing 3-dim. relaxation code: additional term
1787         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1788      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1789      * At compile time, in "EXF_OPTIONS.h" set
1790          #define  ALLOW_CLIMTEMP_RELAXATION
1791          #define  ALLOW_CLIMSALT_RELAXATION
1792      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1793          tauThetaClimRelax3Dim = 15552000.0,
1794          tauSaltClimRelax3Dim  = 15552000.0,
1795      * 3 cases:
1796          1) Use a constant-in-time 3-dim. field
1797          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1798          3) Real-time relax. to time-evolving prescribed field
1799    o Adding Laplacian-type smoothness constraint on
1800      initial and boundary (forcing) controls (ic, bc)
1801      * enable at compile-time via
1802        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1803      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1804      * Absolute scale somewhat unclear so far
1805      * no area weighting was included since no other cost term does so far
1806    
1807    checkpoint57y_post
1808    First step for a NLFS adjoint
1809    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1810    o new init. routines for calc_r_star, calc_surf_dr
1811    o still need to deal with ini_masks_etc
1812    o testreport seemed happy
1813    checkpoint57y_pre
1814    
1815    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1816    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1817    o add new offset feature to offline pkg (plus minor cleanup)
1818    o cfc fixes for final year of integration
1819    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1820      be in GCHEM_OPTIONS).
1821    
1822    checkpoint57x_post
1823    o fix testreport Pb in multiple test experiment.
1824    o cleanup our namelist syntax in verification:
1825      - make it more F95 standards compliant (some work still needed)
1826      - allows the vast majority of our tests to work with gfortran
1827    o Non-Hydrostatic:
1828     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1829     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1830    o Allow to apply AB on T,S rather than on AB(gT,gS):
1831     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1832     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1833       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1834     - need a "clever" read_pickup to restart from the other AB formulation
1835    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1836    o remove some unused variables (reduces number of compiler warnings)
1837    o adjoint
1838      * Disable useVariableViscosity for adjoint for time being
1839        (there are a number of extensive recomputations)
1840      * Initialize certain variables needed for adjoint
1841    
1842    checkpoint57w_post
1843    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1844                 fix the singleCpuIO RS version of MDSWRITEFIELD
1845       and add a WARNING if using globalFiles=T with multi-processors.
1846    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1847      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1848    o tracer advection scheme:
1849      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1850       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1851       was not very convenient).
1852      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1853       (further tests needed for the implicit DST & Flux-Limiter schemes).
1854    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1855      and sRef for convenience, handy, when you want to initialize
1856      ptracers in a large domain with a constant non-zero value. Also,
1857      untangle ptracers_init.F a little.
1858    
1859    checkpoint57v_post
1860    o change dome exp. to use variable viscosity in side-drag terms.
1861    o remove all the files from the cfc_offline test since they are now
1862      incorporated into tutorial_cfc_offline which has been producing
1863      identical results for a few days of testing
1864    o add new parameter: sideDragFactor to enable half-slip-side BC
1865      and change side-drag S/R to use viscosity from mom_calc_visc
1866      (can switch back by setting sideDragFactor=0.); affects results at
1867      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1868       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1869    o vorticity & strain are now computed without masking, to account for
1870      no-slip-side BC in variable viscosity calculation ; mask is applied
1871      anyway later on, before computing advection/coriolis terms.
1872    o modify exp4 to test new obcs support for reading from external files
1873      and for passive tracers
1874    o fix behavior of ptracers_monitor when monitor output is written to a
1875      netcdf-file; still not independent of monitor.F (writes in the same
1876      file).
1877    o change default value of tRef (put a uniform, meaningful value for ocean
1878      & atmos) and initialize sRef (was missing, as Martin mentioned).
1879    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1880      to be proportional to enstrophy dissipation length.  Thus,
1881       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1882      This is now consistent with Smagorinsky and with the manual.
1883    
1884    checkpoint57u_post
1885    o OBCS and PTRACERS: add open boundary support for passive tracers
1886      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1887        OB-values from file; this is not different from the way theta and salinity
1888        are treated
1889      - however, Orlanski-radiation conditions are not supported, and the model
1890        will stop if you use pTracers and Orlanski at the same time.
1891      - beefed up the rountine obcs_external_fields_load: now only those open
1892        boundary values are overwritten with values from files for which there
1893        are really files, otherwise the OB-fields remain untouched. This makes
1894        it possible to use different OBs at different ends of the domain (as
1895        with EXF)
1896    o reduce number of exch calls in shap_filt (s2).
1897    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1898      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1899    
1900    checkpoint57t_post
1901    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1902    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1903      same truncation, independent of the face number: affects affects several
1904      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1905    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1906      note that biharmonic viscosity + no-slip was not tested in any experiment.
1907    o fix bug in non-linear free-surf side-drag ; generate new output for
1908      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1909    o make mnc honor the writeBinaryPrec flag for most kinds of output
1910    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1911    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1912      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1913    o add brackets in multi-terms sum to get same truncation, independent of
1914      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1915      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1916    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1917      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1918      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1919      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1920      Suggested values of viscosity parameters found in mom_calc_visc.
1921      Many new viscosity diagnostics available.
1922    
1923    checkpoint57s_post
1924    o Add clearing-house for viscosity calculations, mom_calc_visc and
1925      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1926      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1927      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1928      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1929      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1930      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1931      ViscAhStrain and viscAhTension are now retired.
1932    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1933    o In response to JMC's bug report, genmake2 now ignores any soft-links
1934      that it finds in the *current* directory when searching for files.
1935      Soft-links found in any other source directories will still work as
1936      they did before.
1937    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1938      a C routine to unlimit the stack size
1939    o mnc-ify pkg/aim snapshot vars
1940    o mnc-ify pkg/land as requested by Daniel
1941    o various changes to mnc including:
1942      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1943      - output can now be grouped so that all files within a group
1944          change the ITER portion of their names in lock-step together
1945      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1946          and works with both EXCH1 and EXCH2 (but needs more testing)
1947      - writing works for all verification test cases w/ g77 on Linux
1948    
1949    checkpoint57r_post
1950    o make MNC variable initialization happen earlier
1951    o add diagnostics for (almost) each term of the momentum Eq.
1952    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1953    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1954    o remove MINIMAL_TAVE_OUTPUT option ;
1955      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1956    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1957      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1958    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1959    o add time-dependent SST, SSS control
1960    o cost terms in ecco/ modularized (new cost_generic.F)
1961    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1962    o new infrastructure for seaice model vs. obs misfits in seaice/
1963      * driver from the_main_loop.F is seaice_cost_driver.F
1964      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1965      * gradient check in Exp. 6a of natl_box_adjoint/
1966    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1967      (see README file)
1968    
1969    checkpoint57q_post
1970    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1971    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1972      - bug was reported by Jean-Michel and Ian Fenty
1973    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1974      update exp. cpl_aim+ocn output.
1975    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1976      Needed for high-res. runs with large global files
1977      to be able to limit tapelev size
1978    o Changed some tests for adjoint:
1979      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1980      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1981      * global_ocean.90x40x15/ back to default 3-level checkpointing
1982    o Modifications to enable scripted COMMON to MODULE conversion
1983      * verification/OpenAD/code/ has necessary scripts and description;
1984      * converts, compiles and runs successfully;
1985    
1986    checkpoint57p_post
1987    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1988    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1989      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1990    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1991    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1992      (was already the case for dissipation with mom_vecinv,
1993       and also the case for grad.PhiHyd when staggered-timeStep)
1994      This will allow to put dissipation out-off the AB time-stepping.
1995     Unfortunately, affects truncation error. Update output of exp. that "fails"
1996      (cg2d matching number) and leave the others for later: front_relax(10),
1997      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1998      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1999    
2000    checkpoint57o_post
2001    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2002      (2) its ready to be documented during the 20050801 DocFest
2003    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2004      for ideal_2D_oce and lab_sea on linux_ia32_g77
2005    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2006      in global1x1_tot/code_seaice_adj to access indices 32, 33
2007      (worth another tag)
2008    
2009    checkpoint57n_post
2010    o adding precip control xx_precip 32
2011    o adding swflux control xx_swflux 33
2012    o Replacing 10 forcing penalty cost routines by 1 generic.
2013    o Implementing partitioning in time-mean and variable adjustment
2014      for atmos. state.
2015    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2016    o in natl_box_adjoint:
2017      * updated exp 1 to 10
2018        (but does not have time-mean vs. variable split results yet)
2019    o updated global1x1/*_seaice_adj/
2020      to incorporate latest changes
2021    o enable useSingleCpuIO for mdsio vector routines
2022      (applies in particular to tapelev I/O)
2023    o removed inefficient K-loop in all active_file*control*.F
2024    
2025    checkpoint57m_post
2026    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2027      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2028    o pkg/exch2: filling of face-corner halo regions is optional
2029      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2030    
2031    checkpoint57l_post
2032     tag before updating tutorials (pre-release-2)
2033    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2034       for output and interpolation of input fields onto model grid)
2035    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2036       Affects results of exp. rotating_tank ; update output.txt.
2037    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2038          and taking the square quantity and/or using a fraction-weight field.
2039    o fix aim_diagnostics_init.F mate numbers.
2040    o add mnc output capability to diagnostics/diagstat and update
2041      our cvsignore files for the ACSII output generated
2042    
2043    checkpoint57k_post
2044    o lab_sea now uses diagnostics package and provides a suite of
2045      new EXF diagnostics output.
2046    
2047    checkpoint57j_post
2048    o exf
2049      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2050        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2051        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2052      * extended diagnostics output
2053        - now includes all EXF variables
2054        - hs, hl moved to common block
2055        - separate S/R for diagnostics, called after ctrl vector is added
2056        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2057        - EXFqnet contains true Qnet (i.e. includes qsw)
2058      * updated verif. lab_sea, global_with_exf
2059      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2060        to ensure that diagnostics sees a true EXFqnet
2061    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2062    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2063      several times with different frequencies.
2064    o mnc-ify the thsice package as requested by Daniel Enderton
2065      - the monitor--MNC output needs work
2066      - many attributes need to be added (most are currently blank)
2067    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2068      - many attributes need to be added (most are currently blank)
2069    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2070    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2071    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2072      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2073         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2074    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2075     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2076    
2077    checkpoint57i_post
2078    o Diagnostics package was changed: diagnostic allocation is now deactivated
2079      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2080    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2081      add 1rst Order upwind vertical Shear.
2082    o add a quick fix for A/B checkpointing in OFFLINE mode
2083    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2084      end-run around the C/Fortran linking horror in eesup/src/timers.F
2085    o added pkg/runclock: allows user to terminate run based on wall clock
2086    o added non-hydrostatic scaling parameter: nh_am2
2087    o pkg/my82: futile attempt to make results compiler-independent by adding
2088      some "_d 0", etc. no effect.
2089    o for mnc output, fill the 'T' coordinate var with myTime and create a
2090      separate 'iter' variable for iteration count
2091    o pkg/diagnostics:
2092      add new capability: output of Global/Regional & per-level statistics ;
2093      tested against monitor output (including land & thSIce) on various exp.
2094    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2095    
2096    checkpoint57h_done
2097      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2098      data.diagnostics, data.gchem, data.ptracers) is done.
2099    
2100    o pkg/diagnostics: prepare for Global/Regional statistics.
2101      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2102    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2103      and rename it: DIFFERENT_MULTIPLE
2104    
2105    checkpoint57h_post
2106    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2107    o pkg/diagnostics: change output frequency, now in seconds (instead
2108      of Nb of iterations). This requires to change data.diagnostics.
2109    checkpoint57h_pre
2110    
2111    o in mnc, let the user create the output dir if both mnc_outdir_date
2112      and mnc_outdir_num are false
2113    o add fflags() to pkg/diagnostics which allows one to specify, on a
2114      per-file basis, the file precision [default behavior is unchanged]
2115    o added diagnostics to pkg/kpp, including computation of mixed layer
2116      depth based on a temperature/density criterion
2117    o updated verification/natl_box to test the new pkg/kpp diagnostics
2118    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2119    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2120    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2121      not mnc -- this mistake was found by JMC and is now corrected
2122    
2123    checkpoint57g_post
2124    o add Adams-Bashforth 3rd Order time stepping:
2125      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2126      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2127    checkpoint57g_pre
2128    
2129    o make lambda[Theta,Salt]ClimRelax spatially varying
2130      (default remains spatially uniform constant based on tau)
2131    o added new control variables
2132      * init. uVel, vVel, etanN
2133      * lambda[Theta,Salt]ClimRelax
2134    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2135      (suggested by G. Forget)
2136    
2137    checkpoint57f_post
2138    o add parameter "baseTime" = model base time = time at iteration zero
2139      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2140      account for baseTime shift
2141    o move Coriolis arrays from PARAMS.h to GRID.h
2142    checkpoint57f_pre
2143    
2144    o mnc-ifying the seaice package
2145    o introduced an alternative length scale calculation for use in the limiting
2146      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2147    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2148    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2149      as well as grad(vort3).  Made it compatible with both approximate form
2150      for the cubed sphere and full form of these gradients.  Added flag
2151      useFullLeith to select between approximate and full form.  
2152    o add "d0" in getcon.F to reduce differences between compilers/platforms
2153      update output.txt of exp. fizhi-gridalt-hs
2154    o change port_rand funtion to allow to set the seed.
2155    o fix obscure MNC bug involving conversion between reals and integers
2156      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2157        new version is now more standards-compliant
2158    o adjoint-related modifications
2159      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2160      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2161      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2162    
2163    checkpoint57e_post
2164    o Adding eddy stress controls a la Ferreira et al.
2165    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2166    
2167    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2168      update output.txt of exp. fizhi-gridalt-hs
2169    o add more "Z" dimensions and associated coordinate vars to MNC
2170    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2171    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2172      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2173      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2174      months and years.  Requires pkg/cal.
2175    o diagnostics: add pickup functionality
2176      - off by default for backwards compatibility
2177      - current version only uses MDSIO -- MNC will be added
2178    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2179    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2180    
2181    checkpoint57d_post
2182    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2183    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2184      output from the diagnostics package
2185    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2186    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2187      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2188    o add coordinate variables to the MNC output from the diagnostics package
2189    o change MNC-flags default value: true when useMNC=TRUE
2190    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2191      the ability (off by default) to read the grid information using MNC
2192    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2193    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2194    o do snap-shot diagnostics at the middle of the time-interval (instead of
2195      at the end).
2196    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2197      new test for AIM with thSIce + slab-ocean
2198    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2199    o move state variable diagnostics to the beginning of the time step ;
2200      (note: still needs some work specially for snap-shot diagnostics)
2201      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2202    
2203    checkpoint57c_post
2204    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2205    o generate new output.txt files on faulks with g77 & the new -ieee option
2206    checkpoint57c_pre
2207    
2208    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2209      update output.txt of exp. global_ocean.90x40x15
2210    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2211      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2212    o add saltFlux(+File) forcing capability with periodicExternalForcing
2213    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2214    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2215    o improvements for the MNC output from DIAGNOSTICS:
2216      - correct handling of the unlimitied dimension
2217      - all dims now have associated coordinate variables
2218      - variables located at U, V, and Corner ("Z") points are now written
2219        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2220        *all* data points are output
2221    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2222    o added pkg/seaice/seaice_monitor.F
2223    o mdsio_readfield.F can now read files visible only to master MPI process.
2224    o pkg/seaice: some test code for ice-modified ocean stress
2225    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2226      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2227      spurious negative numbers for precipitation and humidity.  Will cause
2228      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2229    o pkg/ctrl/
2230      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2231        May be enabled via doPackDiag
2232      *  introduce z-scaling of
2233         + gradient (doZscalePack) and
2234         + control (doZscaleUnpack)
2235    o pkg/mdsio/
2236      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2237      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2238    
2239    checkpoint57b_post
2240    o simplify options in diagnostics_fill arguments (remove weird combinations)
2241    o fix MNC coordinate variables so that they now contain per-face index
2242      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2243      general, EXCH2 grids are only aligned to a "local" coordinate system
2244    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2245    o Implement instantaneous output within pkg diagnostics:
2246      setting a negative frequency in data.diagnostics produces
2247     "snap-shot" output (as opposed to time-average if freq > 0)
2248    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2249      NOTE: change ptracer diagnostics name: use 2 characters to work with
2250            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2251    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2252      becomes the coordinate variable for the 'T' dimension
2253    o add CF-style coordinate variables to MNC
2254      - just a first cut:  numbers are meaningless on the cubesphere and
2255        missing along the T axis but otherwise it works!
2256    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2257    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2258    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2259      this is based directly on what the model compute, so that the content of
2260      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2261    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2262    o clean up build options files for SunOS, in particular
2263      - remove -traditional from xmakedepend
2264      - change -xarch=v9 to -xarch=native for f77
2265      - restore use of make (not gmake)
2266      - add CC=gcc if using g77
2267    o changes per discussion of AM, JMC, & EH3 today:
2268      - move redundant "grid" variables out of "state" -- in preparation of
2269        creating proper CF-style coordinate variables and in recognition
2270        that any/all grid variables can be easily copied (eg. w/NCO) from
2271        the grid files into any of the other NetCDF files
2272      - *always* output grid variables with MDSIO (this will eventually be
2273        changed)
2274      - output MNC grid file if useMNC is true
2275    o every instance of _END_MASTER() has been found and replaced with
2276      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2277      preprocessors
2278    o re-arrange diagnostics pkg initialisation:
2279     - allow each package to extend the available diagnostics list
2280     - add some checking and fix small problems (multi-threaded, ...)
2281     - new S/R diagnostics_fill (replace fill_diagnostics):
2282       look through the short list of active diag. (instead of the long list)
2283       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2284    
2285    checkpoint57a_post
2286    o this set of changes restores TAMC compatibility
2287      tested for global_ocean.90x40x15 adjoint on trough
2288      (what a pain)
2289    
2290    checkpoint57a_pre
2291    o some modifs in tools/build_options for sunos
2292    o call ctrl_pack for ctrl at end for optimcycle=0
2293    
2294    checkpoint57
2295    o add horizontal bi-harmonic viscosity for vertical velocity
2296      - new parameter viscA4W (defaults to viscA4)
2297      - affects only non-hydrostatic code
2298      - to be done: no-slip lateral boundary conditions
2299    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2300    o implement Implicit Vertical advection for pTracers
2301    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2302      (implemented also for implicit vertical diffusion & advection)
2303    o OBCS: extend application of tracer open boundary conditions
2304      to a strip beyond the boundary of width Olx/Oly
2305    o add call monitor to TAF set of required calls (flow directives)
2306      and include in natl_box_adjoint
2307    o untangle a few ifdefs related to cost, ctrl, autodiff
2308      untangel a few ALLOW_ECCO_OPTIMIZATION
2309    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2310      (theta2, salt2 in ecco_cost_weights)
2311    
2312    checkpoint56c_post
2313    o OBCS as control variables
2314      - update ctrl_ad_diff.list, obcs_ad_diff.list
2315      - remove balance of obcs controls from default
2316      - fix index bug nobcs in ctrl_init
2317      - fix dummy fields filen in ctrl_pack
2318      - add dummy weights for obcs
2319    o lsopt: comment out fort.94 output
2320    o optim:
2321      - remove unnecessary header files
2322      - adjusted namelists
2323      - add xerbla.F to Makefile
2324    o exf:
2325      - multiple modifications of exf_check_range
2326      - unit change in exf_init_runoff from [m/year] to [m/s]
2327    o mdsio:
2328      - i/o-vector change debugLevel from debLevA to debLevB
2329    
2330    checkpoint56b_post
2331    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2332      is called from DO_THE_MODEL_IO
2333      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2334      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2335      - clean up PTRACERS_WRITE_TIMEAVE a little
2336    o add another verification experiment that tests both the cfc-pkg and
2337      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2338      reactive tendencies treated inline with regular timestepping
2339    o testreport previously did a lousy job of comparing small numbers, so
2340      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2341      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2342      testreport.
2343    o ptracers_monitor: bug fix for MPI
2344    
2345    checkpoint56a_post
2346    o GCHEM: finish reorganizating the package
2347      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2348        (introduces another 3D-array for each passive tracer, but only if
2349        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2350        gchemTendency is not needed because the timestep is done separately)
2351      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2352      - GCHEM is now---more or less cleanly---separate from PTRACERS
2353      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2354        so clear to me how that should be done in a general way.
2355    o CFC: improve formatting of output in CFC_ATMOS
2356    o PTRACERS:
2357      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2358        that ALL experiments with ptracers enable can be checked. This makes
2359        GCHEM_MONITOR obsolete.
2360      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2361        monitorFreq
2362      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2363    o add PTRACERS (PTR0[1-5]) to testreport output
2364    o exf_check_range:
2365      * default changed to .TRUE.
2366      * will check values for niter0 if debLevA, every timestep if debLevB
2367      * STOP in exf_check_range if 'out of range'
2368      * range chosen generous to allow for potential extema
2369      TBD: a version with stricter range
2370           permitted range would be runtime parameters
2371    o GMredi:
2372      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2373      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2374      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2375    o GCHEM:
2376      - move call to GCHEM_FORCING_SEP, so that it is now called before
2377        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2378      - introduced a useGCHEM runtime flag and applied it everywhere.
2379      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2380        this flag is now only visible within GCHEM-pkg routines.
2381      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2382        be replaced by a 3D array that is computed before thermodynamics; for
2383        this, the tracer ID iTracer had to be included into the parameter list
2384        of ptracers_forcing
2385      - set up forward_step to call gchem_forcing, that will replace
2386        gchem_forcing_int in ptracers_forcing
2387      - cleaning up
2388    o small cleaning of exch2: remove files that are also in eesupp/src
2389    
2390    checkpoint56
2391    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2392    o mnc: cleanup "full" files--fixes out-of-memory problem
2393    o ECCO-GODAE
2394      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2395      * fully merged and updated from SIO code
2396        windstress sign change affects
2397        - exf_inscal_[u/v]stress
2398        - sign of xx_tau[u/v] adjustments
2399        - signs in cost_scat
2400      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2401      * natl_box_adjoint updated and compressed
2402      * 2-level checkpoint switch added
2403        (tested in EXP. 1 of natl_box_adjoint)
2404      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2405    o SVD
2406      * first complete, non-hacked version for SVD calculations
2407      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2408        performed via direct access files admtlm_vector.it????
2409        (via ctrl_[un]pack)
2410      * optimcycle is used for ARPACK iteration counter
2411        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2412      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2413        and add linear transforms where necessary
2414      * controls are initial/final SST, SSS (can be extended; need to check
2415        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2416    o mdsio: filename info to both stderr, stdout
2417    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2418      from sign change
2419    
2420    checkpoint55j_post
2421    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2422      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2423    o add consistent build directories and .cvsignore files to verification
2424    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2425    o make all subroutines 30 or less characters in length for certain older
2426      compilers to work (a thorough search only turns up two routines in
2427      pkg/ptracers)
2428    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2429      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2430    
2431    checkpoint55i_post
2432    o change arrays for total vertical diffusivity (2.D if explicit,
2433      3.D if implicit) ; each ptracer uses its own background value.
2434    o added mnc/NetCDF output capability to ocn_compon_interf
2435      - added bits to verification/cpl_aim+ocn so that it can run on
2436        ITRDA and other clusters without the mpirun "-wd" option
2437    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2438      configuration
2439    o give MNC the ability to create additional files rather than
2440      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2441      - the default is just less than 2GB which is a practical limit
2442        on many systems
2443    o Compute the non-local term using either KPP vertical diffusivity (=default)
2444       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2445    
2446    checkpoint55h_post
2447    o add verification test "vermix"
2448    o remove all the *_ioinc flags and replace with the single global
2449      outputTypesInclusive flag
2450    o allow to set a vertical profile of vertical diffusivity for T & S
2451    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2452    o useMNC moved from data.mnc to data.pkg
2453    
2454    checkpoint55g_post
2455    o Renaming carbon AD experiments to comply with testreport conventions
2456    o Updating adjoint of Held-Suarez hs94.1x64x5
2457    o Fixing directives for non-ECCO forward_step, after ECCO directives
2458      have been fixed to avoid recomp. of do_oceanic_phys
2459      Works well for global_ocean.90x40x15,
2460      but recomp. issue remains for carbon
2461    o Updating adjoint output for natl_box_adjoint after
2462      pkg/ecco has been modified (see taga c55d_post)
2463    
2464    checkpoint55f_post
2465    o rename to timeave_init_fixed
2466    
2467    checkpoint55e_post
2468    o some delicate re-shuffle of store directives to avoid one
2469      extra call of do_oceanic_physics
2470      affects ecco_the_main_loop.F, do_oceanic_physics.F
2471      checkpoint_lev1_directives.h
2472    o NB: this may break global_ocean adjoint temporarily,
2473      but it is clear how to fix it. Will do later, need this now.
2474    
2475    checkpoint55d_post
2476    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2477    o ecco_cost_weights is modified to 1x1 runs
2478    o modifs to allow observations to be read in as
2479      single file or yearly files
2480    o enable to read exf forcing fields as either
2481      single file or yearly files (flag useExfYearlyFields)
2482    checkpoint55d_pre
2483    
2484    o switch between 2-level and 3-level checkpointing
2485    o add ability of MNC to write local and "partial" (eg. 2D slices where
2486      the full 3D field is never actually stored) arrays to NetCDF files
2487      with the correct (that is, the complete multi-dimensional) set of
2488      array indicies
2489      - used in mom_vecinv() to write the diagFreq output
2490      - tested (demonstrated) in verification/aim.5l_cs
2491    o further mnc-ification
2492      - add verification/lab_sea to the list with mnc setups
2493      - fix undefined mnc v-names in cd_code
2494      - add kpp to mnc output (both snapshot and timeave)
2495    o non-hydrostatic code
2496      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2497        in calc_gw.F
2498      - defaults to viscAh
2499      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2500        friction or Leith) in non-hydrostatic mode, as long as there is
2501        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2502    o pkg/cost
2503      extend simple cost functions to treat time mean quantities
2504      (T,U,V) via cost_accumulate_state from cost_tile
2505    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2506        be 2 times larger than the minimum size the advection scheme requires.
2507        now get a perfect conservation of salt in advect_cs test-exp (updated)
2508    o GGL90 (Gaspar's TKE mixed layer)
2509      - add horizontal diffusion of TKE, requires exchanges in
2510        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2511        default. In OPA there is no horizontal diffusion of TKE but the
2512        mixing coefficients are computed from a horizontal average of TKE of
2513        6 points or so. I think that diffusion has a little more physical
2514        justification.
2515      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2516        was in vain)
2517      - mask tke-variable in ggl90_init
2518    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2519    o fix biharmonic diffusion on CS-grid.
2520    o more obcs stuff
2521      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2522        for reading boundary values. This routine is called from
2523        obcs_prescribe_read
2524      - updated obcs_check
2525      - changed sponge layer relaxation parameter units for days to seconds
2526      - turned off sponge layer by default
2527      - changed argument list of OBCS_CALC to myTime+deltaTclock
2528      - fixed about 35 bugs in obcs_external_fields_load
2529    
2530    checkpoint55c_post
2531    o obcs stuff
2532      - new runtime flags useOBCSprescribe, useOBCSbalance
2533      - re-arranged obcs_calc
2534      - moved exf_getobcs to obcs_prescibe_read
2535        obcs_prescibe_read is called after ORLANSKI stuff
2536        and independent of it (executable can contain all).
2537      - updated obcs_check
2538      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2539        These may be necessary only if tangential velocities are
2540        prescribed at OB, not sure, needs testing.
2541    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2542      which simplifies the calls and passes the ifc check-bounds test
2543    
2544    checkpoint55b_post
2545    o add a 2D scalar, Z location, exchange_2 routine.
2546    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2547      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2548      affects advect_cs results (for the wrong reason): update output.txt
2549    o use a more standard discretization for biharmonic viscosity ;
2550     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2551      affects results of dome set-up: update output.txt
2552    o fix gad_advection.F (CubedSphere part), back to version 1.23
2553    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2554    
2555    checkpoint55a_post
2556    o merged code to
2557      * prescribe/read time-dependent open boundaries
2558        (works in conjunction with exf, cal)
2559      * sponge layer code for open boundaries
2560      * each boundary N/S/E/W now has its own CPP option
2561        (healthy for the adjoint)
2562    
2563    checkpoint55
2564    o up-to-date adjoint of previous breaks
2565      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2566      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2567      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2568      - carbon: * remove tr1-related adjoint verification
2569                * add ptracer as control variable
2570    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2571      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2572    
2573    checkpoint54f_post
2574    o in verification/carbin/ remove experiment related to
2575      ALLOW_PASSIVE_TRACER (array tr1 etc)
2576      code_ad/ input_ad/ results_ad
2577    
2578    o add two new packages
2579      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2580        + subject to optimization (memory)
2581      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2582        + subject to reordering (many GOTOs in the original code)
2583        + so far opps is called for every (i,j) point, and then operates in
2584          the vertical; one may want to reorder the scheme in order operate in
2585          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2586          fields)
2587    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2588      - all verification tests compile and run with linux_ia32_g77
2589      - defaults are compatible with current input files--nothing
2590        should change if you were not previously using MNC
2591      - MNC output has been added in numerous places (eg. timeave)
2592        but there are still a few writes not yet do-able with MNC
2593        (this is in progress)
2594      - flags now allow for either/or/both use of MDSIO and MNC and
2595        documentation will soon follow
2596      - numerous small formatting cleanups for ProTeX
2597    o add version info (via BUILD_INFO.h) to MNC and stdout
2598    
2599    checkpoint54e_post
2600    o add two new packages
2601      - pp81 (Packanowski and Philander, 1981), Richardson number and
2602        stratification dependent mixing
2603      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2604      - these scheme operate in a similar manner as KPP (without ghat, of
2605        course), however there is only one diffusivity that is used for both
2606        temperature and salinity (and passive tracers)
2607    o add offline package
2608    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2609      provided by Stephanie Dutkiewicz
2610    o genmake2: add ability to search for C compilers and cleanup test output
2611      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2612    
2613    checkpoint54d_post
2614    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2615    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2616      leading to additional shift by 5 days each year of integration
2617       (i.e. leading to considerable offset over the years)
2618    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2619    o start with no AB and no initial filtering (staggerTimeStep):
2620      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2621    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2622      (external loading & cpl import/export stay in forward_step.F)
2623    o update coupling interface to work with new staggerTimeStep
2624    o change MDSIO ptracers_pickup.
2625    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2626    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2627    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2628    
2629    checkpoint54c_post
2630    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2631      this affects (truncation error) output.txt of test-exp:
2632       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2633    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2634    o change Qnet to always be the net heat flux, (+upward).
2635      affects (truncation error) output of natl_box exp.: updated
2636    o define the max number of passive tracers in PTRACERS_SIZE.h
2637    o start to test mnc routinely in exp0
2638    o add sea-ice loading (sIceLoad) as a new forcing field.
2639    
2640    checkpoint54b_post
2641    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2642       impressive on Altix and Opteron systems)
2643    o diagnostics can now write NetCDF files through the mnc package
2644    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2645    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2646    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2647      affects (truncation error) output of lab_sea & natl_box exp.: updated
2648    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2649    
2650    checkpoint54a_post
2651    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2652    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2653    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2654    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2655      + internal_wave (shift in writing cg2d_ini_res)
2656    checkpoint54a_pre
2657    
2658    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2659      - modified verification/lab_sea and natl_box_adjoint accordingly
2660    
2661    checkpoint54
2662    checkpoint53g_post
2663    o prepare splitting of thermodynamics: store convect.counter in common block
2664    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2665      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2666    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2667    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2668    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2669    o restore adjointability
2670    
2671    checkpoint53f_post
2672    o modifications that affect AIM experiment results (update output.txt):
2673      - no advection of S at top interface Nr (pkg/generic_advdiff)
2674      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2675    o AIM pkg:
2676      - include stability function into surf.Flux derivative relative to Tsurf
2677      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2678    
2679    checkpoint53e_post
2680    o merged cylindrical coord configuration
2681    o added rotating_tank experiment
2682    checkpoint53e_pre
2683    
2684    checkpoint53d_post
2685    o faulks upgraded: re-generate output.txt that have changed:
2686       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2687    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2688    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2689    o added Sadourny discretization of Coriolis
2690      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2691      - re-enabled use of omega3 (useAbsVorticity)
2692    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2693      vector-invariant equations
2694      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2695    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2696      hopefully without new bugs
2697      - still to do: biharmonic friction for non-hydrostatic w
2698    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2699    o regenerated output for global_ocean_ebm (using -ieee)
2700    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2701      of mom_common/
2702      - simple re-arrangement of instructions within computing loop
2703    checkpoint53d_pre
2704    
2705    checkpoint53c_post
2706    o new version of coupler for AIM+thSIce and Ocean models
2707     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2708     - land: change Evaporation of snow
2709     - aim with thSIce: fix bug in snow-precip.
2710    o changes to calc_gw.F
2711     - bug fix for w^2 term near the bottom boundary
2712     - (hopefully) improve the lateral slip boundary condtions for use with
2713        partial/looped cells
2714      - because the bug fix changes two verification experiments anyway (exp5
2715        and plume on slope), change the lateral boundary condition from half slip
2716        to the value of no_slip_sides
2717    o ebm package wasnt quite up to the parallel task. Fixed that.
2718    o Adjoint of EBM package + verification
2719      * TLM OK
2720      * ADM not sufficient accuracy yet (needs further testing)
2721    
2722    checkpoint53b_post
2723    o Commiting new energy balance model to repository
2724      * package is pkg/ebm
2725      * verif. is verification/global_ocean_ebm
2726      * references are in ebm_driver.F
2727    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2728    C        Global thermohaline circulation. Part I:
2729    C        Sensitivity to atmospheric moisture transport.
2730    C        J. Climate 12(1), 71-82
2731    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2732    C        Global thermohaline circulation. Part II:
2733    C        Sensitivity with interactive transport.
2734    C        J. Climate 12(1), 83-91
2735    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2736    C        Destabilization of the thermohaline circulation
2737    C        by atmospheric eddy transports.
2738    C        J. Climate 7(12), 1870-1882
2739    o Will need long integration testing.
2740    checkpoint53b_pre
2741    
2742    o created pkg/mom_common in preparation for variable viscosity code
2743    o renamed and split ini_mnc_io
2744    o pkg/land: only liquid water can diffuse or run-off
2745    o AIM using land: soil wetness availability account for snow
2746    o added printMapIncludesZeros to EEPARMS namelist
2747    
2748    checkpoint53a_post
2749    o restore TAMC compatiility for exf_constants.h
2750      (no usage of _d in .h)
2751    o Additional storing in KPP in an attempt to fix
2752      TAMC problem with adjoint of KPP code.
2753      (no success...)
2754      Identical code works fine with TAF.
2755    o Fixed verification/natl_box_adjoint experiments.
2756      Initial conditions for Experiments 4 and 5 are now
2757      set to "SEAICE_initialHEFF=0", which is more reasonable,
2758      and hence gives results closer to that of Experiment 2.
2759      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2760    
2761    checkpoint53
2762    o stable checkpoint with up to date adjoint
2763      TLM tests only run for 1st grdchk at the moment. Its unclear if
2764      this is a code problem or a problem with resetting code for g_
2765      variables that is being autogenerated wrong.
2766      Otherwise:
2767       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2768       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2769         are both still in chaos following their security messes.
2770    
2771    checkpoint52n_post
2772    o various build (mostly genmake2) changes including:
2773      - ability to build/run more easily within Cygwin and MacOS X
2774      - more complicated Makefiles with a stronger dependence on Gnu Make
2775    o pkg/seaice modifications
2776      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2777        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2778        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2779      - changed proxy for geostrophic velocity and updated
2780        verification/lab_sea/results/* accordingly
2781      - removed ADI dynamic solver from pkg/seaice
2782      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2783        they caused a segmentation fault under certain circumstances
2784      - removed unused field WATR
2785    o bug fix in exf-package:
2786      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2787         now reflect that.
2788    o small fixes in the cal-package:
2789      - set reference date to first of January for the 'model'-calendar
2790      - failing of cal_CheckDate in cal_FullDate now actually results in a
2791        warning
2792    o small modifications in exf-package to increase flexibility:
2793      - change climtempfreeze from a constant to a runtime parameter that
2794        is specified in data.exf_clim (default = -1.9)
2795      - introduce runtime parameter windstressmax (default = 2.0) that is
2796        specified in data.exf
2797    o fix in pkg/thsice:
2798      - update Evap (Tsf changes) to be consistent with Latent heat flux
2799      - maintain snow precipitation unchanged (even if Tsf >=0).
2800     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2801    
2802    checkpoint52m_post
2803    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2804      this does not change any of the results, because myIter=0 in swfrac always
2805      lead to jwtype=2 (the default anyway), but the call makes little sense
2806      as a default
2807    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2808    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2809      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2810    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2811    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2812    o extending useSingleCpuIO option to work with new exch2 I/O format
2813      - old-style, missing-tile I/O is still accessible by defining CPP
2814        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2815    o monitor package can write to NetCDF files and/or STDOUT
2816    o fix re-definition bug in MNC_GRID_INIT_ALL()
2817    o doc/api_reference added
2818      - a framework for building an API Reference Manual using all
2819        the "protex" comments embedded in the code
2820      - see pkg/generic_advdiff, pkg/mnc for examples
2821    o MNC:
2822      - make myThid the last argument for all subroutines
2823      - new default for the grid files: NO halos
2824      - add useMNC and other run-time flags
2825      - separate per-file-group handling of the unlimited dimension
2826      - early initialization of MNC w/ flags read at the eeboot stage
2827        and lookup tables set in initialize_fixed
2828      - write all MNC output to a freshly-created directory
2829    o thermodynamics sea-ice (thsice) is now tested with testreport.
2830    o test exp. advect_cs: use the standard cs32 grid ; update output.
2831    o Added functionality to grdchk:
2832      pick global i,j,k position (or nearest wet) where to perform check.
2833    
2834    checkpoint52l_post
2835    o new land formulation:
2836      a) use ground enthalpy as prognostic variable to ensure exact
2837         energy conservation.
2838      b) account for water temperature and for latent heat of freezing
2839         in all processes (rain, run-off, ground storage)
2840      c) compute surface and ground temperature implicitly.
2841    o aim_v23 modification for new land model:
2842      a) Treat separately land / ocean / sea-ice surface fluxes
2843         to allow implicit computation of land & sea-ice surface temp.
2844      b) add snow precipitation.
2845    checkpoint52l_pre
2846    
2847    o fix problem (when 1 tile is empty) in min/max monitor.
2848    o fix bug in timeAve (u,vZetatave in common block)
2849    o no restoring terms under ice for pkg/seaice
2850    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2851    o bug fix for pkg/seaice pickups
2852    o change MNC call locations and add coordinate attributes
2853    o mask vorticity at the corner ; affects global_ocean.cs output
2854    o fix ini_curvilinear_grid ; test CS experiments with mpi
2855    o aim.5l_cs: modify sea-ice fraction input file ; update output
2856    o exf: Adding simple range check routine for exf fields after read
2857    
2858    checkpoint52k_post
2859    o removed top-level directory "diags"
2860      - we migrated these functions to pkg/timeave a long time ago
2861    o fixed bug introduced in pkg/monitor
2862    o accuracy ctrlprec = 32 insuffient for gradient checks using
2863      averaged fields (I/O via cost_averages)
2864      -> use ctrl.h in active_file*.F to control I/O precision.
2865    o paramter list of CALL ADTHE_MAIN_LOOP
2866    o added initial do_the_model_io to ecco
2867    o set all ...Freq to zero after cost_final
2868      taveFreq, dumpFreq, pChkptFreq
2869    o MAIN and ECCO differentiability restored
2870    
2871    checkpoint52j_post
2872    o fix nchklev in tamc.h for global_ocean...
2873    o Bringing flow and store directives up-to-date
2874    o Really weird thing!
2875      call do_the_model_io from the_main_loop with parameters
2876      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2877      TAF places a faulty re-call of initialise_varia
2878      after cost_final call which should not be there!
2879    checkpoint52j_pre
2880    
2881    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2882      error messages
2883    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2884    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2885      debug output
2886    o modfied mdsio_writefield.F to handle non-global files under exch2
2887    o update AIM Cubed-Sphere exp (aim.5l_cs):
2888      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2889    o update AIM Equatorial Channel exp:
2890      use standard aim_v23 pkg and change the SST fields to be more realistic.
2891    o globalFile now works with exch2
2892    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2893      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2894    o limit timeave output for hi-res integrations
2895    
2896    checkpoint52i_post
2897    o removed CPP_EEOPTIONS.h from verification/*/code
2898    o updated the tiling for global_ocean_pressure
2899    checkpoint52i_pre
2900    
2901    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2902      the old pkg/aim).
2903    
2904    checkpoint52h_pre
2905    o shortened offending lines in exch2_send_rx?.template
2906    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2907    o genmake2: add build & execute test for NetCDF code
2908    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2909      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2910    o added useSingleCPUIO flag to monitor.F and mon_out.F
2911    o added temporary hack for sea-ice dynamics on the cube:
2912      metric terms are ignored and it is assumed that
2913      there is no sea-ice on cube faces 1, 2, 4, and 5.
2914    
2915    checkpoint52f_post
2916    o added exch2 cube routines to pkg/exch2
2917    o modified hs94.cs-32x32x5 to use it
2918    o added new grid files to hs94.cs-32x32x5
2919    checkpoint52f_pre
2920    
2921    checkpoint52e_post
2922    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2923      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2924    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2925      to work with implicit vertical advection and AB ;
2926    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2927    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2928     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2929    checkpoint52e_pre
2930    
2931    o fix bug in impldiff when Nr=1 or Nr=2.
2932    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2933    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2934    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2935      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2936    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2937    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2938    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2939    
2940    checkpoint52d_post
2941    o re-tiled many expts to allow comparison in multi-processor mode
2942      - updated output accordingly
2943      - changed hs94.128x64x5 to use intial T from file rather than use the
2944        random number generator
2945    o add infrastructure in model routines for fizhi and gridalt packages
2946    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2947    o changes to permit hi-res, cubed-sphere, configuration
2948      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2949      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2950      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2951        of surface winds for the cube
2952      (A verification experiment, based on global_ocean.cs32x15, but with
2953       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2954       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2955       complete with example surface forcing files and matlab scripts to look
2956       at the output and compare it with that of global_ocean.cs32x15.)
2957    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2958       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2959       to conform to the common rule.
2960    o check-in the first version of the coupler + interfaces for multi-components
2961       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2962       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2963       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2964       - ocean and atmos. share the same horizontal grid (no interpolation).
2965       - exchanges between component and coupler is done in forward_step
2966    o new verification experiment, cpl_aim+ocn:
2967       coupled ocean - AIM atmosphere on cs32 grid.
2968    
2969    checkpoint52d_pre
2970    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2971    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2972    
2973    checkpoint52c_post
2974    o Fixing OPTIONS files for use of exf:
2975      - ALLOW_ECCO not needed
2976      - ECCO_CPPOPTIONS.h should not be included from
2977        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2978        as has been the case in the past
2979      - All cal/exf related options are currently set in
2980        single header file. Should remain so until we
2981        agree on a consistent new policy.
2982    o Removed all CPP options for cal package.
2983      cal has no more CPP options.
2984    o modified STOREs in GAD_ADVECTION
2985    o corrected key comp. for passkey
2986    
2987    checkpoint52b_post
2988    o new version: "thsice" of thermodynamic sea-ice pkg:
2989     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2990     - modify fluxes but do not change theta directly;
2991     - light cleaning of bulk_force pkg (still needed with thsice).
2992     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2993       + output_thsice.txt to test thsice & bulk_force pkgs.
2994    o put back grid & coriolis monitor output.
2995    checkpoint52b_pre
2996    
2997    o call "do_the_model_io" at the beginning (=> dump initial state)
2998    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2999    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
3000      (need info on NUMBER_OF_PTRACERS)
3001    o missing PTRACERS headers in some routines
3002    o default tamc.h in pkg/autodiff supposed to crash
3003      to ensure proper customization
3004    
3005    checkpoint52a_post
3006    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
3007      - moved surfaceTendencyTice from pkg/seaice to main code
3008      - subroutine FREEZE_SURFACE now limits only surface temperature
3009        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
3010        => new output.txt for global_ocean.cs32x15 & global_with_exf
3011      - keep the old version of FREEZE for backward compatibility;
3012        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
3013      - corresponding modifs for TAF directives
3014    o added surface flux output variables to TIMEAVE_STATVARS
3015    o time-averaged output for pkg/ptracers
3016    o fix problem with ECCO-related divided adjoint
3017      snapshot file was missing some ad-variables,
3018      but no warning issued by TAF
3019    
3020    checkpoint52a_pre
3021    o some bug fixes for #undef REAL4_IS_SLOW
3022    
3023    checkpoint52 = ecco_c52_e35
3024    o after testing adjoints of checkpoint51u_post
3025    
3026    checkpoint51u_post
3027    o this is the post-merge tag of the ecco-branch
3028      (needs another clean checkout and re-testing)
3029    o various natl_box_adjoint configs and results
3030      but no input fields
3031    o obcs adjoint not yet merged!
3032    o adding ECCO global 1x1 and 2x2 degree configs
3033    o updated/extended some store directives for seaice
3034    o pkg/ecco now containes ecco-specific part of cost function
3035    o top level routines the_main_loop, forward_step
3036      supersede those in model/src/
3037      previous input data.cost now in data.ecco
3038      (new namelist ecco_cost_nml)
3039    o in ctrl/ cleaned some cross-dependencies and updated CPP options
3040    
3041    checkpoint51t_post
3042    o this is the pre-merge tag of the ecco-branch
3043    
3044    checkpoint51s_post
3045    o cleanup: removed various obsolete #define-s
3046    o pkg/grdchk
3047      - renamed 'ph-grd 3' to 'grad-res'
3048      - merged from ecco-branch
3049        (remaining bug fixes for obcs gradient checks)
3050      - additional high-precision output for testreport
3051        (grep for 'precision_grdchk_result')
3052    
3053    checkpoint51r_post
3054    o cleaned up or removed CPP_OPTIONS.h files
3055    o updated results for some of the tests to reflect the new
3056      optfiles (-ieee: -O0 instead of -O3)
3057    
3058    checkpoint51q_post
3059    o cd_code:
3060      - moved cd_scheme.F -> cd_code_scheme.F
3061      - separate read_checkpoint from cd_code_ini_vars.F
3062      - separated cd_code part from write_checkpoint
3063      - updated AD_SOURCE, generated .flow
3064      - added CD_CODE_VARS.h to the_main_loop
3065      - Moving cd_code specific store dir.s to pkg/cd_code
3066    o ctrl package totally restructured
3067      - pack/unpack now optional and decoupled from
3068        xx_/adxx_ I/O
3069      - ctrl_pack/unpack cleaned
3070        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
3071      - confined inclusion of AD_CONFIG.h to where necessary.
3072    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
3073    
3074    checkpoint51p_post
3075    o create initial cd_code package
3076      - WARNING: the initialization of fields within packages
3077        is broken because INI_FIELDS (where READ_CHECKPOINT is
3078        called) is called *before* PACKAGES_INIT_VARIABLES.
3079        This seems to be backwards since
3080        1) its important to initially zero the entire field including
3081           the "halo" region
3082        2) zeroing needs to be done *before* reading pickup info
3083           and the pickup call might or might not happen in any
3084           particular run
3085      - this needs an overhaul for R2
3086    o cleanup verification/*/code/GMREDI_OPTIONS.h
3087    o cleanup testreport
3088    
3089    checkpoint51o_post
3090    o bringing AD-related verif's up to date with genmake2
3091      - carbon/
3092      - global_ocean.90x40x15/
3093      - hs.94.1x64x5/
3094      - (front_relax/ )
3095    o (more) consistent directory structure for AD-related verif.'s
3096    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
3097    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
3098    o bug fix in find_alpha.F for MDJWF:
3099      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
3100        change rho -> rho-rhoConst
3101      - replace call find_rho to find_rhonum
3102    o initialisation of rFlx extended to full array (required by TAF)
3103      and shifted to thermodynamics
3104    o removed PTRACERS.h in ptracers routine
3105    o added surfacetendencyPtr to S/R parameter list pracers_forcing
3106    o Correcting initialisations for fVerU, fVerV.
3107    o helping TAF to recognize dependency on kUp for
3108      fVerU, fVerV
3109    o Replacing delZ by delR in pkg/ctrl/
3110    checkpoint51o_pre
3111    
3112    o undid all of cp51 pending some cleanups and discussion
3113    o added the [#include "AD_CONFIG.h"] statement to all files that need
3114       it for adjoint/tl #defines
3115     o re-worked the build logic in genmake2 to support AD_CONFIG.h
3116     o removed tools/genmake since it no longer works
3117    
3118    checkpoint51n_post
3119    o modifications to make FREEZE flux visible to pkg/kpp
3120      - moved surfaceTendencyTice from pkg/seaice to main code
3121      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
3122      - subroutine FREEZE now limits only surface temperature
3123        (this means new output.txt for global_ocean.90x40x15,
3124         global_ocean.cs32x15, and global_with_exf)
3125    o added surface flux output variables to TIMEAVE_STATVARS
3126    
3127    checkpoint51n_pre
3128    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
3129    o added [#include "AD_CONFIG.h"] to all files that use the following
3130      defines:
3131      - ALLOW_ADJOINT_RUN
3132      - ALLOW_TANGENTLINEAR_RUN
3133      - ALLOW_ECCO_OPTIMIZATION
3134    
3135    checkpoint51m_post
3136    o incorporating changes to get TAMC/TAF working in genmake2
3137      - added new TAMC/TAF targets to the Makefile
3138      - various cleanups related to package handling
3139      - these changes should have no impact on the forward model
3140    
3141    checkpoint51l_post
3142    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
3143     - faster algorithm for cal_addtime.F
3144     - higher precision arithmetic, where needed
3145     - pkg/exf *startdate variables changed from calendar date to
3146       model integration time
3147    
3148    checkpoint51l_pre
3149    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
3150    o enable to apply restoring on S & T only in a latitude band.
3151    o update output (external_forcing_surf modif. change truncation errors)
3152       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
3153    
3154    checkpoint51k_post
3155    o change default to: useNHMTerms=.FALSE.
3156     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
3157       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
3158     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
3159        exp1, ideal_2D_oce
3160     - change data file of oceanic exp (leave the results unchanged for now)
3161       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
3162    o set gravitySign automatically according to the vertical coordinate used
3163      (and change sign: back to "logical" value: +1 when R increases downward)
3164    o added an include barrier to the default CPP_OPTIONS.h and
3165      removed the #include "PACKAGES_CONFIG.h" from it
3166    o fix a bug in mom_fluxform (from chk51j_post)
3167    
3168    checkpoint51j_post
3169    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
3170    o adjusted some flow directives (dynamics, thermodynamics)
3171    o added cubed-sphere case to test cost function
3172    o heckpoint_lev?_directives.h now include
3173      pkg-specific directives, whenever those are enabled.
3174    o Moving pkg-specific flow directives to corresponding pkg
3175      Moving pkg-specific differentiation list to corresponding pkg
3176      Moving pkg-specific checkpoint-lev storing to corresponding pkg
3177      ---> conventions are
3178           - pkg_ad.flow
3179           - pkg_ad_diff.list
3180           - pkg_ad_check_lev?_dir.h
3181    
3182    checkpoint51i_post
3183    o merge of the branch-genmake2
3184      - knowingly breaks the older genmake
3185      - automatic generation of all ALLOW_${PKG_NAME} defines
3186      - new testreport supersedes older testscript
3187    o large number of package inclusion and header cleanups
3188    checkpoint51i_pre
3189    
3190    o new output for adjoin of global ocean vector invariant
3191    o fix for checkpoint of thermodynamic seaice and bulk_force
3192    o Steph gchem various cleanups
3193    
3194    checkpoint 51h_pre
3195    o fixed some single quotes
3196    o modify gchem pkg to be more versatile
3197    o modifications to clean up dic pkg
3198    o add pkg/cfc
3199    
3200    checkpoint51g_post
3201    o provide links for ARPACK and ADM*TLM
3202    o start removing verification/vero/
3203    o update AD-related stuff
3204      (in particular some IF-statements in model/src/ routines)
3205    o adding to verification/global_ocean.90x40x15/ adjoint of
3206      vector invariant setup
3207    
3208    checkpoint51f_post
3209    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
3210    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
3211      of tracer Green's fucntions for ocean inversion project.
3212    
3213    checkpoint51f_pre
3214    o Added on-the-fly spatial interpolation capability
3215        "USE_EXF_INTERPOLATION" to pkg/exf.
3216      - This is a temporary Cartesian-grid hack until
3217        the super-duper ESMF coupler becomes available.
3218      - See verification/global_with_exf/README for usage example.
3219      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
3220        flags and modified pkg/seaice accordingly.
3221    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
3222        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
3223        non-local transport term.
3224    
3225    checkpoint51e_post
3226    o pkg/mom_vecinv:
3227      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
3228      - add time-ave diagnostic of vorticity advection.
3229    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
3230    o atmospheric geopotential: - include water vapor effect;
3231                                - use p^kappa in p* scaling.
3232    o land pkg: read initial state from files.
3233    o AIM : add stratospheric drag in the upper level
3234    
3235    checkpoint51d_post
3236    o change function ILNBLNK (=> last non-blank char.) to return zero
3237      (instead of the string length) when the string. char is empty
3238    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
3239    o modif's to restore TAMC compatibility
3240      - avoid "_d" constructs in PARAMETER declarations
3241      - avoid interrupting lines by comment lines
3242    o Use cluster local disks for purely local I/O
3243      vs. globally visible disks needed for ctrl stuff
3244      (merged from ecco-branch)
3245      - new active_file_loc... and mdsio_..._loc routines
3246      - affected packages: autodiff, ctrl, grdchk, mdsio
3247    
3248    checkpoint51c_post
3249    o introducing integer flag debugLevel
3250      - debLevZero: suppress all output
3251      - debLevA: standard
3252      - debLevB: equivalent to current debugMode=.TRUE.
3253    o introducing pathname variable mdsioLocalDir for mdsio
3254      that can be specified at runtime
3255      (relevant for cluster I/O to local disk)
3256    `
3257    >>>checkpoint51b_post
3258    adjoint of ptracers
3259    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3260    o extended state in checkpoint_lev?, etc.
3261    o alternative ctrl/cost with tr1 or ptracer
3262    o new comlev1_bibj_ptracers
3263    o new ptracers.flow
3264    o made ptracers_forcing same as external_forcing_s
3265    o added verification for adjoint with ptracers
3266      - adm. grdchk fail so far
3267      - tlm. grdchk OK
3268      - checked tapelev/comlev recomputations: OK
3269    <<<checkpoint51b_pre
3270    
3271    checkpoint51a_post
3272    o added code for biogeochemistry package
3273      - new pkgs: dic, gchem
3274      - new subroutine in ptracers
3275    o modify code for biogeo packages
3276      - in model/src and pkg/ptracers
3277    
3278    checkpoint51
3279    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3280      - autodiff, ctrl, exf, grdchk, seaice
3281      kept separate packages
3282      - cost, ecco, obcs
3283    o updating verification/internal_wave, verification/lab_sea
3284      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3285    
3286    checkpoint50i_post
3287    o Preparing next differentiable checkpoint and sync
3288      of MAIN vs. ecco-branch
3289      - 1st step: this one is differentiable
3290      - 2nd step: next(! not this) checkpoint will have updated packages
3291                  from ecco-branch)
3292    
3293    checkpoint50h_post
3294    o new package "land": provide surface BC for AIM.
3295    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3296    o AIM: use true log-P extrapolation for near surface temp (= as in
3297        F.Molteni paper) ; update aim.5l_cs output.
3298    o New variable in PARM03 for more flexible pickups
3299    o somewhat cleaned package initialisation sequence for
3300      ctrl/ cost/ ecco/ in packages_... routines
3301    
3302    checkpoint50g_post
3303    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3304      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3305      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3306        made the default because of faster convergence than ADI
3307    
3308    checkpoint50f_post
3309    o exf totally restructured
3310      - replaced all exf_set_ routines by one generic exf_set_gen.F
3311        and made sure it's still differentiable
3312      - split exf_getffields.F into new exf_bulkformulae.F
3313      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3314      - updated adjoint/makefile and relevant verif. accordingly
3315    
3316    checkpoint50f_pre
3317     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3318          + change Evap over land. (update aim.5l_cs output)
3319     o added missing .cvsignores and made uniform across expts
3320     o changed configuration of tidal_basin_2d expt
3321     o added pkg/debug functions for tracing code in fatal crashes
3322     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3323     o new fn in pkg/monitor to stop model if solution grows too big
3324     o removed lots of single quotes from comments
3325    
3326    checkpoint50e_post
3327    o make KPP work with PTRACERS
3328     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3329       nearly a copy of kpp_transport_s
3330     - there is no analogue to SurfaceTendencyS, so I have to use
3331       gPtr(of the surface layer) instead
3332    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3333    checkpoint50e_pre
3334    
3335    checkpoint50d_post
3336    o change kpp output from multiple-record state files to single-record state
3337      files analogous to write_state.F
3338    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3339      analogous to the cg2d-related output.
3340    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3341      so that writing to internal file fn (with length 512) fails.
3342    checkpoint50d_pre
3343    
3344    checkpoint50c_post
3345    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3346    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3347    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3348    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3349    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3350    
3351    checkpoint50c_pre
3352    Merging from release1_p13:
3353    o bug fix for pkg/seaice dynamic solver
3354    o Added SEAICE_initialHEFF to pkg/seaice
3355    
3356    checkpoint50b_post
3357    o store u*,v* in gU,V instead of in guNm1,gvNm1
3358    o in order to put the momForcing out of the Adams-Bashforth:
3359      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3360      to timestep.F
3361    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3362    o re-generate output for highly sensitive test-exp:
3363       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3364    
3365    checkpoint50b_pre
3366    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3367    o corrected CPP option mismatch in exf_Bulk... functions for case
3368      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3369    
3370    checkpoint50a_post
3371    o Bug fix for merging between c50 and KPP.
3372      ikey was passed from thermodynamics to kpp_calc via
3373      common block rather than being recomputed in kpp_calc,
3374      in contradiction with new key itdkey.
3375      New key ikppkey created, and tamc.h headers updated.
3376    
3377    checkpoint50
3378    - 2nd step of merge with ecco-branch:
3379      merge changes in ecco-branch back into main trunk
3380    - bug fix in find_alpha
3381    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3382    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3383    - merged some sliced AD support routines
3384    
3385    checkpoint49
3386    merged from ecco-branch:
3387    o exf:
3388      - Enable initialisation of forcing fields to constant
3389        (runtime) values.
3390      - in exf_getffields.F
3391        Reduce i-/j-loop to interior domain, discarding overlaps.
3392        That also fixes wrong TAF-key computations for key_1, key_2
3393        with bulf formulae.
3394      - exf_init.F modify #ifdef for exf_init_evap
3395      - exf_getffieldrec.F, ctrl_getrec.F
3396        The following INT-usages are not safe:
3397          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3398          fldcount = int(fldsecs/fldperiod) + 1
3399        and were modified.
3400    o autodiff: checkpoint_lev...
3401      - updated storing for bulk formulae (some arrays were missing)
3402      - added state for seaice package
3403      - synchronized with main branch
3404    o DIVA:
3405      Modif.s in
3406      - the_main_loop.F
3407      - the_model_main.F
3408      and added cost_final_restore.F cost_final_store.F
3409      o With these changes, it is possible to fully separate
3410        the first forward run to compute the cost function (mdthe_main_loop)
3411        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3412        into separate model executions.
3413        This enables better tuning of DIVA to given queue sizes.
3414      o Loss of cost function value in consecutive DIVA runs is
3415        fixed by storing to 'costfinal' file.
3416      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3417        beginning/end of adjoint integration is accounted for.
3418      The current changes apply to TAF-1.4.26.
3419      TAF has one remaining bug, requiring one manual change
3420      (see MITgcm manual).
3421    o cal: synchronized between MAIN and ecco-branch
3422    
3423    checkpoint48i_post
3424    o Changes to restore differentiability of code w.r.t. previous tag
3425      (mostly adding new routines to make list and replacing
3426      pressure by totPhiHyd).
3427    o Updated and merged grdchk package
3428      - has both ADM and TLM checks
3429      - works for single- and multi-proc.
3430      - output cleaned
3431      - worked successfully for parallel DIVA
3432    o genmake:
3433      - Adding -platform=SP4
3434      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3435    o Modif. for DIVA:
3436      ctrl_unpack should not be called in intermediate DIVA interval.
3437      (similar thing would apply for active files such as
3438      tbar, sbar, psbar, which should not be reinitialised;
3439      only relevant for ecco-branch)
3440    
3441    checkpoint48h_post
3442    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3443    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3444    o Added SEAICE_initialHEFF to pkg/seaice
3445    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3446    
3447    checkpoint48g_post
3448    --- EOS:
3449    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3450      store total Potential in totPhyHyd for diagnostics & EOS.
3451    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3452    --- Pressure/geopotential gradient:
3453    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3454    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3455      ( changes results of global_ocean_pressure )
3456    o NLFS + z-coord.: add eta*Rho' contribution.
3457    o accurate phiHyd when using interface-W at the middle between 2 centers
3458     ( changes results of ideal_2D_oce )
3459    o includes r* 2nd term in potential gradient.
3460    
3461    checkpoint48f_post
3462    Merging from release1_p12:
3463    o Modifications for using pkg/exf with pkg/seaice
3464      - improved description of the various forcing configurations
3465      - added basic radiation bulk formulae to pkg/exf
3466      - units/sign fix for evap computation in exf_getffields.F
3467      - updated verification/global_with_exf/results/output.txt
3468    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3469      (SBO) core products, including oceanic mass, center-of-mass,
3470      angular, and bottom pressure (see pkg/sbo/README.sbo).
3471    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3472      to avoid negative values in shallow regions.
3473      - updated verification/natl_box/results/output.txt
3474      - updated verification/lab_sea/results/output.txt
3475    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3476    o Added useSingleCpuIO option (see PARAMS.h).
3477    o Updated useSingleCpuIO option in mdsio_writefield.F to
3478      work with multi-field files, e.g., for single-file pickup.
3479    o pkg/seaice:
3480      - bug fix in growth.F: QNET for no shortwave case
3481      - added HeffFile for specifying initial sea-ice thickness
3482      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3483    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3484      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3485    o pkg/seaice:
3486      - adjoint-friendly modifications
3487      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3488    
3489    checkpoint48e_post
3490    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3491    o dynamics: change definition of computational domain & adapt mom_fluxform
3492      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3493    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3494        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3495        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3496        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3497        inverted_barometer solid-body.cs-32x32x1
3498      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3499    
3500    checkpoint48d_post
3501    o in preparation for r*:
3502     a) use pre-computed gradient of hydrostatic potential:
3503        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3504     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3505        => affects results of glob_oce_pressure (different truncation error)  
3506      update output.txt of ideal_2D_oce & global_ocean_pressure
3507    
3508    checkpoint48d_pre
3509    o in preparation for r*:
3510      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3511      pass the 2 comp. of the grad. as arguments to momentum S/R.
3512      but for the moment, only used if it does not change the results.
3513    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3514    
3515    checkpoint48c_post
3516    Modifications in treatment of initial flux forcing controls
3517    to avoid extra storing of flux fields.
3518    
3519    checkpoint48c_pre
3520    o Added tidal_basin_2d experiment (currently 1D!)
3521    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3522    
3523    checkpoint48b_post
3524    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3525     (modification to pressure gradient not yet implemented)
3526    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3527      (for U & V) that are used for vertical advection of momentum.
3528    
3529    checkpoint48a_post
3530    o In preparation for r*, use temp. array to compute vertical transport
3531       in flux-form momentum pkg. => change results of few test-exp.
3532      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3533                        lab_sea, natl_box & plume_on_slope
3534    
3535    checkpoint48
3536    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3537    
3538    checkpoint47j_post
3539    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3540    o moved adexch from forward_step to addummy_in_stepping
3541    o added exch in ctrl_map_...
3542    o aveFreq.=0. at end of cost_final to avoid overwrite in
3543      reverse checkpointing loop
3544    o Yet more changes in gmredi:
3545      * adgmredi_calc_tensor
3546        avoiding all recomputation of gmredi_slope_limit
3547      * adgmredi_x/y/rtransport
3548        added flag for excessive storing to avoid recomp. of
3549        u/v/rtans, dTdx/y/z
3550        -> this is not really necessary and very memory-consuming
3551      * adgmredi_slope_psi:
3552        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3553      * gmredi_slope_limit
3554        re-activated full calculation of taperfct for case 'ac02'
3555    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3556    
3557    checkpoint47i_post
3558    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3559    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3560      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3561    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3562    o gmredi: fix few bugs.
3563    
3564    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3565    This will be a good checkpoint to plug into the ecco-branch.
3566    o few modif.'s to get latest version adjointed
3567      (mainly kick out code in ini_linear_phisurf)
3568    o modif's to run adjoint with exactConserv
3569    o case GM_BOLUS_ADVEC should be cleaned
3570      S/R gmredi_slope_psi should be cleaned
3571    o verification/carbon now has exactConserv=.TRUE.
3572    
3573    checkpoint47g_post
3574    o time-average AIM output: becomes independent from statvars time-average
3575      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3576    o After TAF bug fix:
3577      Tested adjoint of gmredi package.
3578      Tests were done with checkpoint47 rather than with latest
3579      checkpoint47f_post since the latter is broken for the adjoint
3580      verification/carbon/ contains both ADM and TLM gradient checks.
3581    Here they are, before they get changed/lost/stolen.
3582    Mostly modif.'s to fix numerical sensitivities.
3583    Gradient checks OK for
3584    - GM_taper_scheme:
3585      * clipping
3586      * ac02
3587      * linear
3588      * glw91
3589      * dm95
3590      * ldd97
3591    - GMREDI_OPTIONS:
3592      * GM_VISBECK_VARIABLE_K
3593      * GM_NON_UNITY_DIAGONAL
3594      * GM_EXTRA_DIAGONAL
3595      * GM_BOLUS_ADVEC
3596    in conjunction with data.gmredi parameters to be checked in
3597    in a few minutes under verification/carbon/code/
3598    
3599    checkpoint47f_post
3600    Merging from release1_p10:
3601    o modifications for using pkg/exf with pkg/seaice
3602      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3603        and SEAICE_EXTERNAL_FLUXES
3604      - pkg/exf CPP options EXF_READ_EVAP and
3605        EXF_NO_BULK_COMPUTATIONS
3606      - usage examples are Experiments 8 and 9 in
3607        verification/lab_sea/README
3608      - verification/lab_sea default experiment now uses
3609        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3610    
3611    checkpoint47e_post
3612    o created a tag prior to creating a branch
3613    
3614    checkpoint47d_post
3615    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3616      at the bottom boundary had an erroneous half slip boundary condition
3617    o added bottom drag and no slip boundary condition capabilities to
3618      oceanic pressure coordinates code
3619    o added new verification experiment global_ocean_pressure, this experiment is
3620      also described in the tutorial section of the manual
3621    checkpoint47d_pre
3622    
3623    checkpoint47c_post
3624    o Added a verification experiment for a global cubed-sphere ocean run
3625      -  verification/global_ocean.cubed32x32x30
3626      -  uses pkg/therm_seaice and pkg/bulk_forcing
3627    
3628    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3629    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3630      when using P-coordinate; only implemented for atmospheric config.
3631    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3632      NOTES: requires option NONLIN_FRSURF to be "#define".
3633    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3634    
3635    checkpoint47b_post
3636    Merging from release1_p9:
3637    o pkg/seaice
3638      - removed GOTO's and added taf directives
3639      - double precision constants to reduce the g77 (Linux)
3640        to F77 (SGI) differences reported in release1_p8
3641    o tools/genmake
3642      - added SGI options
3643    o verification/testscript
3644      - updated to that of checkpoint47a_post
3645    o verification/global_ocean.90x40x15/input/eedata
3646      - modified for SGI f77 compatibility
3647    o verification/lab_sea
3648      - added description of sea-ice model
3649      - added missing matlab routines
3650      - added test of thermodynamics parallelization
3651    
3652    checkpoint47a_post
3653    o new pkg: aim_v23
3654     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3655       for now, keep the same surface forcing as before.
3656     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3657     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3658     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3659    o add diagnostic of surface correction term in monitor output
3660    
3661    o bulk_force and therm_seaice
3662    - Two packages:  bulk_force (Bulk forcing)
3663      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3664    - Earlier integration from Stephaine Dutkiewicz
3665      and Patrick Heimbach.
3666    - Two ifdef statements for compile time,
3667       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3668    
3669    checkpoint47
3670    differentiable version of checkpoint46n_post
3671    o bug fix in quasihydrostaticterms
3672    o * "clean" adjoint code (in terms of extensive recomputations)
3673        can now be obtained for all GMREDI options (i.e. for
3674        - GM_VISBECK_VARIABLE_K
3675        - GM_NON_UNITY_DIAGONAL
3676        - GM_EXTRA_DIAGONAL
3677        - GM_BOLUS_ADVEC )
3678      * However, wrong gradient check problem remains unsolved.
3679      * New CPP options have been introduced for different
3680        tapering schemes
3681    o external_fields_load now part of differentiation list
3682    o pressure needs multiple storing;
3683      would be nice to have store_pressure at beginning or
3684      end of forward_step, e.g. by having phiHyd global (5-dim.)
3685      (NB: pressure is needed for certain cases in find_rho,
3686      which is also invoked through convective_adjustment).
3687    o recomputations in find_rho for cases
3688     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3689    o #define ATMOSPHERIC_LOADING should be differentiable
3690    o ini_forcing shifted to begining of initialise_varia
3691    o Incorporating QNVS line search routines into MITgcm
3692      (this is separate code, and therefore not under pkg)
3693      lsopt/, optim/
3694    o Updated verification/carbon/
3695      - #define GM_VISBECK_VARIABLE_K
3696      - GM_taper_scheme    = 'ldd97'    
3697    
3698    checkpoint46n_post
3699    Merging from release1_p8:
3700    o verification/natl_box:
3701      updating new external_fields_load routine
3702    o New package: pkg/seaice
3703      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3704      The sea-ice code is based on Hibler (1979-1980).
3705      Two sea-ice dynamic solvers, ADI and LSR, are included.
3706      In addition to computing prognostic sea-ice variables and diagnosing
3707      the forcing/external data fields that drive the ocean model,
3708      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3709      The implied surface heat flux is then stored in variable
3710      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3711      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3712      non-local transport term.  Because this call precedes model
3713      thermodynamics, temperature under sea-ice may not be "exactly" at
3714      the freezing point by the time theta is dumped or time-averaged.
3715      N.B.: fairly large differences in accuracy occur across
3716            different platforms/compilers; comparison between
3717            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3718            generated output gives:
3719       T           S           U           V
3720      C D M    c        m  s        m  s        m  s        m  s
3721      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3722      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3723      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3724    
3725      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3726    o GAD:
3727      - generated new common blocks to account for call of
3728        same gad routines with differing traceridentities
3729        (needed to modify tracerIdentity indices in GAD.h)
3730      - generated separate common blocks for case useCubedSphereExchange
3731        (Department of Futurology)
3732      - parameter lists to gmredi_?transport: added tracerIdentity
3733      - added new key indices to tamc.h
3734    o external_fields_load:
3735      - added this routine to TAF list
3736      - needed to make some common blocks global and additional storing
3737        along the same lines as exf package (checkpoint_lev?_directives.h)
3738    o exf:
3739      updated external forcing package
3740      - bug fixes carried over from ecco-branch
3741        (missing OBCS_OPTIONS.h in two routines)
3742      - enable easy to use "no forcing".
3743      - added exf I/O for atmospheric loading
3744      - added exf I/O for runoff data
3745      - transfered scaling between exf <-> MITgcm to exf namelist
3746    o Adding new verification experiment global_with_exf.
3747      This verification experiment is almost identical to the
3748      global_ocean.90x40x15 experiment, except that it uses
3749      the exf (and cal) package instead of the
3750      external_fields_load routine (cf README file).
3751    
3752    checkpoint46m_post
3753    o modified testscript to return -- when there are no lines of "%MON" output
3754    o added new flag "quasiHydrostatic" for QH mode
3755      and new routine quasihydrostaticterms()
3756    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3757      New routine: mom_u_coriolis_nh()
3758    o fixed sign of non-hydrostatic metric terms in u and v equations.
3759      Depend on correct sign of gravitySign.
3760    o added work.pc* to .cvsignore in aim directories using ifc
3761    o introduced flag for controllin non-hydrostatic metric terms
3762    o removed gravitySign from PARM04
3763    o switched to g77/ifc from pgf77 in aim experiments
3764    
3765    checkpoint46l_post
3766    o made convective adjustment work with pressure coordinates:
3767     - changed the direction of k-loop in convective_adjustment.F for the
3768       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3769     - adjusted the reference pressure k-index in convective_adjustment.F
3770     - adjusted the convection condition in convect.F (in analogy to
3771       calc_ivdc.F)
3772     - convective_adjustment no longer computes anything on the halos
3773     - removed the warnings about negative salinity from find_rho.F and
3774       find_alpha.F; instead the new routine look_for_neg_salinity, called
3775       at the beginning of find_rho, find_alpha, and find_beta, does a
3776       check of the entire slice, if CPP-option
3777       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3778    checkpoint46l_pre
3779    
3780    checkpoint46k_post
3781    o fixed the verification/global_ocean.90x40x15 experiment:
3782     - new bathymetry (the world according to A., JMC, and M.)
3783     - new initial fields and forcing fields (*.bin files)
3784     - new POLY3.COEFFS (for the next release one should switch to a full
3785       equation of state: JMD95P or MDJWF)
3786     - fixed several errors and redundancies in the data file
3787     - experiment uses looped cells
3788     - added matlab directory with diagnostic scripts for plotting of output
3789    
3790    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3791     - read AIM physics parameters from a file (data.aimphys)
3792     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3793    
3794    checkpoint46j_post
3795    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3796    o move wVel computation at the end of the time step, in S/R integr_continuity
3797    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3798    o update timeave pkg for wVel diagnostic.
3799    checkpoint46j_pre
3800    
3801    checkpoint46i_post
3802    o Clean up AIM package (and keep the results unchanged):
3803      include CPP_OPTION and use IMPLICT NONE in all routines ;
3804      declare all the variables _RL ; use _d 0 for all numerical constants.
3805      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3806    
3807    checkpoint46h_post
3808    o cleaned up the use of rhoNil and rhoConst.
3809      - rhoNil should only appear in the LINEAR equation of state, everywhere
3810        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3811        and the dynamical equations are all divided by rhoConst
3812    o introduced new parameter rhoConstFresh, a reference density of fresh
3813      water, to remove the fresh water flux's dependence on rhoNil. The default
3814      value is 999.8 kg/m^3
3815    o cleanup up external_forcing.F and external_forcing_surf.F
3816      - can now be used by both OCEANIC and OCEANICP
3817    checkpoint46h_pre
3818    
3819     Added code to convert surface volume flux (fresh water) into
3820     a mass flux when using P coordinates in the ocean (OCEANICP).
3821     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3822    
3823    checkpoint46g_post
3824    o Include a new diagnostic variable phiHydLow for the ocean model
3825      - in z-coordinates, it is the bottom pressure anomaly
3826      - in p-coordinates, it is the sea surface elevation
3827      - in both cases, these variable have global drift, reflecting the mass
3828        drift in z-coordinates and the volume drift in p-coordinates
3829      - included time averaging for phiHydLow, be aware of the drift!
3830    o depth-dependent computation of Bo_surf for pressure coordinates
3831      in the ocean (buoyancyRelation='OCEANICP')
3832      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3833        Theta, Salinity, and Pressure in the parameter list. This routine is
3834        presently contained in find_rho.F. This routine does not give the
3835        correct density for 'POLY3', which would be a z-dependent reference
3836        density.
3837    o cleaned up find_rho
3838      - removed obsolete 'eqn' from the parameter list.
3839    o added two new verification experiments: gop and goz
3840      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3841    checkpoint46g_pre
3842    
3843    checkpoint46f_post
3844    o Enable tangent linear (forward mode) gradient checks:
3845      - extended active file handling to g_... files
3846      - added TANGENT_SIMULATION to theSimulationMode
3847      - extended grdchk package accordingly
3848    o added tangent linear setup in verification/carbon/code_ftl
3849    o added adjoint setup in verification/front_relax/code_ad
3850    
3851    checkpoint46e_post
3852    o Added new equation of state -> MDJWF
3853      - EOS of McDougall et al., 2002, JAOT, submitted
3854      - caveat: the equation of state is only valid for a smaller (more
3855        realistic?) range of values than JMD95P/Z and UNESCO
3856      - added masks to the calculation of pressure in store_pressure
3857      - added more check values for density in check_eos (ini_eos.F), some of
3858        the old check values are out of the range of the MDJWF-eos, so don't
3859        expect perfect matches for those
3860    checkpoint46e_pre
3861    
3862    checkpoint46d_post
3863    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3864      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3865      case of pressure coordinates. eosType='JMD95Z' in
3866      combination with buoyancyRelation='OCEANICP' now causes an error.
3867    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3868      in find_alpha/beta.
3869    checkpoint46d_pre
3870    
3871    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3872      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3873    
3874    checkpoint46c_post
3875    o Changes necessary for ocean in p-coordinates
3876     -  Added new buoyancy relation = 'OCEANICP'
3877     -  Added new parameters = gravitySign (this used to be contained inside
3878        the factor dRdZ which I added when we first switched to R coordinates).
3879     X GM/Redi is not compatible (yet)
3880     X bottom drag and no-slip need to be debugged.
3881    checkpoint46c_pre
3882    
3883    checkpoint46b_post
3884    o Added new equation of state -> JMD95Z and JMD95P
3885      - EOS of Jackett and McDougall, 1995, JAOT
3886      - moved all EOS parameters into EOS.h
3887      - new routines ini_eos.F, store_pressure.F
3888    o Added UNESCO EOS, but not recommended because it requires
3889      in-situ temperature (see JMD95)
3890    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3891      unesco.f to be used with POLY3
3892    checkpoint46b_pre
3893    
3894    checkpoint46a_post
3895    o Added (atmospheric) pressure loading
3896      - new field in FFIELDS.h, etc...
3897      - new cpp flag ATMOSPHERIC_LOADING
3898    o Changed hFacC to _hFacC in calc_phi_hyd.F
3899    o Added SHORTWAVE_HEATING to some files for consistency
3900    checkpoint46a_pre
3901    
3902    checkpoint46
3903    further merges from release1_p5
3904    o new ctrl package
3905      - adopted from ECCO environment to enable optimization
3906      - added Eliassen Palm fluxes to controls
3907    o added Eliassen Palm flux controls to gradient check package
3908    o cost package
3909      - Compatible with new ctrl package
3910      - added Eliassen Palm cost hooks
3911      - modif's of existing cost functions
3912    o Adjoint-related bug fixes in kpp:
3913      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3914      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3915    o autodiff package
3916      - flow directives:
3917        + new for S/R do_the_model_io
3918        + enhanced for S/R checkpoint
3919        + new gmredi.flow
3920      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3921        disable adcommon.h/g_common.h by default.
3922      - fixed problem for adjoint of global_max
3923    o modified verification/carbon/
3924    o New setup for adjoint of global_ocean
3925    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3926    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3927    o incorporated hooks for sponge layer code (external_forcing.F)
3928    
3929    checkpoint45d_post
3930    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3931    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3932      (affects plume_on_slope "cg2d" output)
3933    o add new parameter deltaTfreesurf for free-surface time stepping
3934    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3935    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3936    o change phiMin in exp1 (to agree with documentation)
3937    o add new flags:
3938     - T,S forcing inside/outside Adams-Bashforth
3939     - turn off temp,salt advection and/or forcing
3940     - for each tracer, define internal flag for multiDimAdvection & A-B
3941    o monitor: change definition of KE to check conservation of Energy
3942    
3943    checkpoint45c_post
3944    o Removed f90 comments ("!")
3945    o Modified initialisations to enable exf package for MITgcm
3946      (without invoking ECCO_PACKAGE).
3947    o modifications to gradient check package (Martin Losch)
3948      - enable centered differences
3949      - modified format of standard output
3950    
3951    checkpoint45b_post
3952    o cleaned exchange calls in cg2d
3953    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3954    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3955      to configure barotropic setup (Martin Losch)
3956    o moved some initialisations within bi,bj loop in dynamics
3957      (TAF flow dependency)
3958    o in initialise_varia, moved call packages_init_variables
3959      before convective_adjustment_init
3960      (corresponding adjustment of TAF tape initialisation).
3961    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3962    
3963    checkpoint45a_post
3964    o compute Rho over the whole domain (extend iMin,jMin indices)
3965    o specific exchange for X-slice domain (case Ny=1)
3966    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3967    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3968    
3969    checkpoint44h_post = checkpoint45
3970    o Fix to restore differentiability:
3971      place at which packages_init_variables is called in
3972      initialise_varia is crucial for reverse control flow.
3973    o modifications in GMRedi to enable stable adjoint
3974      (corresponding modif's in thermodynamics, dynamics)
3975    o added missing hook for sponge layer code in external_forcing
3976    o modified test cost functions
3977    o storing in gad_advection (plus removal of write(0,*)!
3978    o missing headers TR1.h added in convective_adjustment routines
3979    o errorMessageUnit set non-equal zero in eeboot
3980      (conflict on some platforms, e.g. IBM SP3)
3981    o modified carbon verif.
3982    
3983    checkpoint44h_pre
3984    o vertical grid option: allow to put the Interface at the middle between
3985      2 cell-centers ; replace delZ in pkg/kpp by drF.
3986    o GM Advective form: Tracers are advected using the residual transport (=
3987      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3988    
3989    checkpoint44g_post
3990    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3991      results) ; ifdef missing in thermodynamics.F
3992    
3993    checkpoint44f_pre,checkpoint44f_post
3994    o added PTRACERS package
3995      This allows an arbitrary number of passive tracers to be integrated
3996      forward simultaneously with the dynamicaly model.
3997      + Implemented so far:
3998        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3999        - I/O and checkpointing
4000        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
4001      + Not implemented so far:
4002        - KPP
4003        - OBCS
4004      + No specific example supplied (yet) but global_ocean.90x40x15 has the
4005        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
4006        line in data.pkg.
4007      + This package is disabled by default since it increases storage.
4008    
4009    
4010    o testscript: added -cleanup option
4011    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
4012                 b) enable to filter 2D fields.
4013    
4014    checkpoint44e_pre,post
4015    o re-wrote convective adjustment to use pre-calculated weights
4016      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
4017      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
4018      Original calls to convect() still in place.
4019    
4020    chkpt44d_pre,post
4021    o added missing EXCLUDE_MONITOR flags
4022    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
4023      (incompatible typ in MIN/MAX expressions caused problems
4024      on IBM SP3)
4025    o in genmake added variable MAKEDEPEND
4026      plus resetting for case SunOS
4027    o added timer_stats.c routine for IBM SP3
4028    o removed variables in dynamics
4029    !!! I forgot to create tag chkpt44d_pre !!!
4030    !!! But chkpt44d_pre = chkpt44c_post    !!!
4031    
4032    o real fresh water flux implemented with non-linear free-surface.
4033    
4034    chkpt44c_pre,post
4035    o few fix (mask in shap_s2, EmPmR in external_field_load,
4036      USE_NATURAL_BCS in solve_for_P);
4037    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
4038    
4039    checkpoint44b_pre/_post
4040    o merge of relevant stuff from the ecco-branch:
4041      - genmake: removed $S64 overwrite for case SunOS
4042      - pkg/exf: update and corrections for field swapping and obcs
4043      - pkg/ecco: parameter lists for the_model_main, the_main_loop
4044                  harmonized between ECCO and MITgcm
4045      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
4046                      updated checkpointing_lev... lists for obcs
4047      - model/src: minor changes in forward_step, plot_field
4048                   added directive for divided adjoint in the_main_loop
4049      - pkg/mdsio: added mdsio_gl_slice
4050    
4051    o check parameters & config (chkpt44a_pre,post)
4052    o OBC and NonLin_FrSurf.
4053    
4054    checkpoint44
4055    o fix bug in mom_vi_del2uv
4056    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
4057    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
4058    o update AIM experiments (NCEP input files)
4059    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
4060    o added some stuff for AD
4061    
4062    checkpoint43
4063    o added two new advection tests
4064    o added global 4x4 degree ocean test
4065    o added test of H&S94 with free surface on cube
4066    o some final mods for gradient check, adjoint,...
4067    
4068    checkpoint42
4069      Fixed AD-related problems:
4070    o Store directives up-to-date with re-arranged Adams-Bashforth
4071      (mainly thermodynamics.F)
4072    o New store directives for multi-dim. advection schemes
4073      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
4074      * new common block and key passkey
4075      (mainly gad_advection.F)
4076    o Modified store directives for split of dynamics/thermodynamics
4077      for the case ALLOW_KPP
4078    o Cleaned argument list for timestep_tracer.F
4079    
4080    checkpoint41
4081    o re-formatted/added comments in prologues of key subroutines
4082      to work with protex
4083    
4084    checkpoint40
4085    o moved calc_gs, calc_gt and calc_tr1 back to model/src
4086    o added FLT (floats) package from Arne along with demo. experiment
4087    o re-arranged Adams-Bashforth scheme for tracers to allow easier
4088      implementation of forward-in-time forcing terms
4089    o more mods for non-linear free-surface including new variable
4090    o modified multi-dim method to work on cube
4091    o bug fix in KPP (from DM)
4092    
4093    checkpoint40pre9
4094    o added DST advection schemes
4095    o fix MPI bug on SGI's
4096    o modifications for non-linear free-surface
4097    o fixed conditionals for fixed flow/passive tracer only mode
4098    o added tension/strain form of stress tensor
4099    o changes to commenting of arguments for TAF/TAMC
4100    o added/updated many matlab scripts
4101    o added multi-dimensional advection method for tracers
4102      
4103    checkpoint40pre8
4104    o new package rw/
4105      Added method for dumping intermediate local arrays:
4106      mdsio_writetile - same as mdsio_writefield except works from inside
4107                        bi,bj loop
4108      mdsio_writelocal - same as mdsio_writetile except works for local
4109                         arrays
4110      write_local_r? - higher-level wrapper for mdsio_writelocal
4111      Controlled by diagFreq. Defaults to zero (ie. no dumps)
4112      Example given at end of mom_vecinv.F that dumps some local arrays.
4113    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
4114      control flux-form versus vector invariant code.
4115      Switch is runtime flag vectorInvariantMomentum (defaults to false)
4116      or genmake -DISABLE ...
4117    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
4118      (additional storing is now needed for case vecinv;
4119      currently nothing implemented to switch this storing off
4120      in case fluxform is used since no CPP flag available).
4121    
4122    checkpoint40pre7
4123    o bug fix in dynamics.F
4124      calc_viscosity called before k=1,Nr loop.
4125    o added some #ifdef's ALLOW_PASSIVE_TRACER
4126    o cleaned initialisations in ctrl_map_ini
4127      related to TAF
4128    
4129    checkpoint40pre6
4130    o split dynamics into thermodynamics & dynamics
4131    o corresponding split of calc_diffusivity into
4132      calc_diffusivity, calc_viscosity
4133      (kpp_calc_diff, kpp_calc_visc).
4134    o Added diffkr, kapgm to control variables
4135    o bug fix in gmredi_slope_limit for ldd97
4136    
4137    checkpoint40pre5
4138    o proper initialization of Adams-Bashforth time stepping
4139      + uses forward step for very first step of model (iter=0)
4140    o re-generated *all* output since almost all output is modified by this
4141      change (sorry but we've been putting this one off for about 2 years)
4142      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
4143        *not* regenerated since they are already out of date and I don't
4144        want to create the impression that they are suddenly working.
4145    o removed KAP stuff for DEC's
4146    o modified/added many .cvsignore files in */code and */input
4147    o added new expt "solid-body.cs-32x32x1"
4148      + this uses an alternative form of ini_curvilinear_grid.F which
4149        is not necessarily any better than the current one...
4150    
4151    checkpoint40pre4
4152    o added re-initialisations of utrans,vtrans,rtrans in
4153      calc_common_factors which are crucial for TAF.
4154    o extended iMin,jMin range for calc_common_factors,
4155      calc_diffusivity
4156    o added option ALLOW_PASSIVE_TRACER
4157    o a few minor updates and fixes
4158    
4159    checkpoint40pre3
4160    o created calc_gtr1.F for gad package
4161    o split the_main_loop and re-introduced forward_step
4162    o some recomputations of nIter0 for TAMC
4163    
4164    checkpoint40pre2
4165    o Updated to latest branch of AJA, JMC
4166    o Added gradient check package
4167    o Added routines for passive tracer handling
4168    o Added carbon sequestration sensitivity experiment
4169    
4170    checkpoint39
4171     o Modifications and fixes to support TAMC
4172       (mainly missing or wrong directives)
4173     o Corrected common blocks when fooling TAMC to produce adjoint I/O
4174       in addummy_in_stepping
4175     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
4176     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
4177     o Included following packages:
4178       cal: calendar
4179       exf: external forcing
4180       ecco: essential routines to control use of cal, exf
4181             (NB: this is not the full ECCO environment)
4182     o disabled some packages by default in genmake
4183    
4184    checkpoint38
4185     o see notes_c37_adj.txt
4186     o corrected wrong layer index in external_forcing_t
4187     o replaced the_main_loop/forward_step by the_main_loop
4188     o removed forceoutput from write_state
4189       (replaced criteria for initial/final state)
4190     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
4191    
4192    checkpoint37
4193     o mdsio.F routine split and packaged in pkg/mdsio
4194       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
4195        used unless genmake -disable=mdsio)
4196     o allow a more precise surface-geopotential gradient for the atmosphere
4197       taking into account the change in space of Alpha (=1/rho) at the surface.
4198     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
4199       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
4200     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
4201       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
4202       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
4203     o Time-Average diagnostics defined as a pseudo package "timeave".
4204     o pickup files : old pickup (before c35) did not work with new code (c35
4205       and after) unless activating 2 commented lines in initialise-varia.
4206     o Non-Hydrostatic pickup file Pb fixed.
4207     o bug with Rigid-lid version (since c35) fixed.  
4208    
4209    checkpoint36
4210     o implement Crank-Nickelson barotropic time-stepping
4211     o recover Time-Average diagnostics
4212     o fix Pb in checkpoint (PR#19)
4213     o AIM become a standard package ; clean unused CPP_kees
4214    
4215    checkpoint35
4216     o subtantial rewrite of dynamics.f
4217     o allows staggered time-stepping
4218     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
4219     o added bottom drag (linear + quadratic)
4220    
4221    checkpoint34
4222     o Modified exchange routines for correct reverse simulation.
4223     o Added verification output to comply with bug fix in impldiff.F
4224       as of c33 (exp2, natl_box).
4225     o Corrected store directives in dynamics.F
4226     o Corrected array boundaries in impldiff.F
4227     o Corrected array dimensions in gmredi.
4228       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
4229     o Added routine GLOBAL_SUM_INT to global_sum.F
4230     o Added mdsio_gl.F for ECCO purposes.
4231    
4232    checkpoint33
4233     o Fixed bug in lower BC in impldiff.F
4234     o Fixed confusion about units of forcing arrays in FFIELDS.h
4235       namely Fu,Fv,Qnet,Qsw,EmPmR:
4236       - Removed verification/natl_box/code/external_fields_scale.F
4237         (did not differ from that in model/src)
4238       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
4239         (see FFIELDS.h for description)
4240       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
4241         kpp_calc.F and kpp_transport_t.F
4242       - Removed model/src/external_fields_scale.F and calls to it
4243       - verification/natl_box uses flux data with "atmospheric" sign so
4244         a special version of external_fields_load.F is used to
4245         change the data as it's read in. This way, the arrays
4246         have the right units and signs at all times tha a user could
4247         possibly use them.
4248     o Corrected genmake to delete a temporary file during configuration
4249    
4250    checkpoint32
4251     o Scaling of forcing fields moved from external_forcing.F to
4252       external_fields_scale.F, called directly after loading fields.
4253     o Surface relaxation terms added to surface tendency fields in
4254       extra subroutine.
4255     o impldiff.F changed to avoid storing by TAMC of huge intermediate
4256       fields.
4257     o Changes in GMRedi to comply with packaging structure.
4258     o Modifications and bug fixes in KPP package.
4259     o Verification experiment for KPP added (verification/nat_box/)
4260    
4261    checkpoint31
4262     o Packages interface brought in line with defined standard
4263       -> new routines packages_...F
4264       -> changes in initialise_fixed.F, initialise_varia.F
4265       -> enables initialisation interface for ECCO package
4266     o Rescaling of external forcing fields immediately after read
4267       (removed from external_forcing.F)
4268       -> new: surface_fields_scale.F
4269       -> affects ini_foorcing.F, external_fields_load.F
4270     o Computation of surface tendencies before tendency updates.
4271       -> new: external_forcing_surf.F
4272     o Change of variable names useGMRedi, useKPP, useECCO
4273     o Further changes in dynamics.F, impldiff.F for TAMC
4274     o Tested for experiments 0, 2, 4.
4275       - not yet tested for GMRedi.
4276       - not yet tested for KPP.
4277    
4278    checkpoint30
4279     o Updates for OBCs
4280     o New experiment for test OBCs (internal_wave)
4281     o New output.txt in verification/exp4/results/
4282     o Updates for KPP: calculation of viscosity corrected, new variables
4283       kpp_dumpFreq and kpp_taveFreq
4284     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
4285       and entry for T90 in genmake
4286    
4287  checkpoint29  checkpoint29
4288   o packaged KPP and GM/Redi   o packaged KPP and GM/Redi
4289    

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