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revision 1.390 by jmc, Sun Nov 21 22:22:31 2004 UTC revision 1.1113 by jmc, Sun May 31 00:00:57 2009 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/exch2:
8      - take buffer copy from/to array out of S/R exch2_send/recv into new
9        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
10        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
11      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
12      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
13        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
14        including Topology header file (and common blocks).
15      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
16        remove 2nd exch call in exch2_s3d_rx (no longer needed).
17      - document S/R arg. list (+ update some comments)
18    o pkg/seaice:
19      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
20        of LSR (this change is expected to change the results slightly because now
21        it uses slightly difference moduli from the second last LSR solution, but
22        that is more consistent with the stress computations; this part of the code
23        is not tested in the verification experiments)
24      - fix diagnostics for flux of ice in case of B-grid
25      - turn strain rates eij and press into global fields within global
26        common block in SEAICE.h for more straighforward diagnostics
27      - fix diagnostics for principal stress components, press, zeta, eta
28        to give something meaning full
29    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
30      new output (all 4 tests) using default rotationPeriod.
31    o pkg KPP:
32      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
33      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
34        and normal grid from 1 to Nr)
35    o Fix computations of L4rdt in mom_calc_visc.F
36    o eesupp:
37      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
38      should be called before a "stop" if we know that all process are going
39      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
40    
41    checkpoint61o
42    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
43    o model/src/ini_curvilinear_grid.F:
44       compute angleSin/CosC when they are not read from a file
45    o pkg/seaice:
46       add pseudo time stepping for LSOR
47    o pkg/exch2:
48       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
49    o pkg/seaice:
50       Adding separate sea ice albedo, drag coefficients, and HO in Southern
51       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
52    o SingleCpuIO:
53       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
54    o pkg/seaice:
55       put exchanged variable in (local) common block for MPI+Multi-Threads
56       to work (necessary with exch1, and for now with exch2 too).
57    o verification: to get more experiments tested with mpi, mth and mpi+mth,
58      change tiling of:
59       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
60       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
61      update output of exp:
62       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
63       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
64      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
65                       (note: output.txt generated on faulks using only 1 tile)
66    o eesupp & mdsio (SingleCpuIO):
67     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
68       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
69       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
70     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
71     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
72       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
73    o pkg/exch2:
74     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
75       read parameter file "data.exch2" if it exists; otherwise try default regular
76       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
77     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
78       with new code (not to be used, just as a backup solution).
79     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
80       in utils/exch2/input.
81    
82    checkpoint61n
83    o eesupp & mdsio (SingleCpuIO):
84      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
85        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
86        receive real*4 array (instead of real*8) to read/write 32.bit files.
87        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
88         and remove new mapping S/R)
89    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
90      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
91        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
92        when using exch2. Add S/R to map global io-buffer to global model array.
93      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
94    
95    checkpoint61m
96    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
97      and add 3 other S/R for other types (R4,R8,RS).
98      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
99    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
100     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
101     - reduce number of macro definitions (keep only those which are used);
102       can always call directly the corrresponding S/R if needed.
103     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
104       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
105     Fixed wrong type of arg in:
106       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
107       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
108     To fix: global_sum of var in common block is wrong (multi-threaded) in:
109       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
110     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
111    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
112      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
113    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
114    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
115      edges are closed (zero depth); might happen with "blank tiles";
116      for now, disabled if using OBCS.
117    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
118      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
119    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
120      to reduce length of 1.D array print in STDOUT.
121    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
122      + use 48 tiles (16x8): this will allow to test "blank tiles".
123    o start to test MPI + multi-threaded (change testreport to skip tests
124      where number of tiles do not match).
125    o genmake2: add option "-omp" to turn on Open-MP ;
126      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
127    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
128      and keep the original tile numbering. Note: compatible with old
129      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
130    
131    checkpoint61l
132    o Overlaps had been forgotten in calculating ijk keys : fixed
133    o fix cyrus makedepend for gcc 4.4
134    o experiment fizhi-cs-aqualev20:
135      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
136      and generate new output. Note: new output is much closer to the old
137      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
138      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
139    o pkg/fizhi:
140     - change to avoid indices going deliberately over array-bounds
141     - remove unnecessary MPI stuff
142     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
143     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
144       does not go over array-bounds and therefore returns reliable output.
145     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
146       this S/R has 4 output arguments, which are used inside "get_alarm";
147       when it is called with the same variable "ndum" in place of several
148       output arguments, this produces weird side effect inside "get_alarm"
149      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
150       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
151       address) and produces error.
152    o tools/gemake2: (March 27-29 2009)
153      with option "-mpi": link *_mpi files from "MODS" dir (this is what
154      testreport does).
155    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
156    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
157       update lab_sea.lsr & lab_sea.salt_plume results
158    o pkg/seaice:
159      Major overhaul of the LSOR solver: change discretization from original
160      finite differences to finite volume. The old routine is still in the
161      file seaice_lsr.F and can be turned on with the CPP-flag
162      SEAICE_OLD_AND_BAD_DISCRETIZATION
163      Along with this change, the discretization of the strain rates is changed.
164      The same flag turns on the old discretization in seaice_calc_strainrates.F
165      All verification experiments with seaice are affected (except for
166      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
167      results by setting the above flag.
168      Further changes involve changes in defaults:
169      - ALLOW_FLOODING is defined and turned on by default
170      - SEAICEadvSnow = .true. is now the default
171      - SEAICEadvSalt = .true. is now the default
172      - SEAICEadvAge  = .true. is now the default
173      - SEAICE_clipVelocities  = .false. is now the default
174                                         (as per J. Zhang's recommendation)
175      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
176        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
177      - seaice_growth: replace computation of UG by a simple copy from wspeed
178    
179    checkpoint61k
180    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
181      seaice_lsr: fixed a few metric terms,
182                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
183                  add more debugging diagnostics
184      seaice_evp: removed superfluous many metric terms of FV discretization
185                  of stress divergence
186                  affects lab_sea, lab_sea.hb87
187      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
188                  of stress divergence for non-evp solver
189                  (this part is not tested anywhere)
190      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
191                  they were effectively only half slip
192                  affects lab_sea.hb87
193      updated all relevant verification experiments (except lab_sea//output_adm.txt
194        which was left over, but fails at level 7 & 6)
195    
196    checkpoint61j
197    o pkg/seaice: turn a few hard wired parameters into run time parameters
198    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
199      time in seconds as promised by the usints in seaice_monitor and exf_monitor
200    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
201      that are not cubed-sphere grids
202    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
203    o pkg/ctrl:
204      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
205    o non-hydrostatic (calc_gw.F):
206      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
207      update output of exp. global_ocean.cs32x15.viscA4
208    o remove backward compatibility for thetaMin,phiMin
209      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
210    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
211      interpolated wind field not only for curvilineargrid=.true., but also
212      for a rotated grid (rotateGrid=.true.)
213    o pkg/exf: add capability to bypass interpolation for runoff
214      by setting yet another CPP-flag
215    o eesupp/src, B-grid exchange:
216      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
217    o autodiff
218      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
219      allows to switch to single-prec common blocks;
220      corresponding switch occurs in tamc.h, integer isbyte
221      TAF store directivs "byte" and "kind" seem equivalent;
222      Most tamc.h have been updated correspondingly.
223    
224    checkpoint61i
225    o autodiff:
226      fix autodiff_sore/_restore indices for obcs
227      (spotted by I. Hoteit, M. Mazloff)
228    o pkg/autodiff, pkg/ctrl:
229      Add flag to reduce all tapelev I/O to single-prec.
230      In data.ctrl set
231        doSinglePrecTapelev = .TRUE.
232    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
233      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
234    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
235      real fresh water flux (not yet)
236    o pkg/mdsio & rw:
237     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
238     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
239    o pkg/flt:
240     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
241       init_fixed & ini_varia.
242     - clean-up & simplify linear interpolation S/R:
243       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
244     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
245     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
246     - add vert. coordinate & horiz. indices to output files.
247     - change vertical position in initial condition, from index to depth [m].
248     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
249       (easier to get to a curvilinear grid) ; delX,delY no longer used.
250    o pkg/ggl90: a few modifications:
251     - fix bottom boundary condition, and interpolation of KappaE
252       near top and bottom
253     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
254     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
255     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
256    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
257      (maintain temporary backward compatibility, until next checkpoint)
258    
259    checkpoint61h
260    o pkg/diagnostics with "periodic averaging diagnostics":
261      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
262    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
263    o pkg/obcs: fix loop ranges for balancing code
264    o pkg/flt:
265     - improve criteria for finding which tile owns a float.
266     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
267    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
268      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
269      with ocean biogeo)
270    o pkg/flt:
271     - do some cleaning and fix the restart ;
272     - add output.txt in flt_example/results to get this pkg tested.
273    o genmake2: add an EXTENDED_SRC option and flag.
274       for now, cannot be turned on on command line (only through genmake_local)
275    o pkg/mdsio: read/write vector:
276     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
277     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
278       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
279     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
280      (drop to 4 digits matching for grad). But this test does not look very
281      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
282    
283    checkpoint61g
284    o pkg/flt:
285      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
286       + make OPTIONS file more standard.
287      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
288      - fix _BYTESWAPIO CPP-Flag
289      - standard reading of file-parameter "data.flt"
290      - fix argument list of S/R FLT_RESTART
291      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
292    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
293    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
294      a still unfixed compiler/optimization bug
295    
296    checkpoint61f
297    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
298      update results of global_ocean.cs32x15.icedyn test.
299    o move getcon.F from model/src to pkg/fizhi.
300    o pkg/exf: add parameter for extrapolation of temp up to the surface
301       and option to prevent negative evap (in bulk_largeyeager04 only).
302    o Prather Advection scheme: fix tracer conservation for divergent flow
303      (e.g., when using NonLin Free-Surface).
304    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
305    o gmredi (Visbeck-variable-K):
306     - add more parameters to Visbeck-variable-K.
307     - use a 5 points average for dSigmaR in Visbeck-K calculation
308       (more "homogenous": same stencil and same weights as in dSigmaH)
309     - update output of ideal_2D_oce experiment.
310    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
311      (#undef REAL4_IS_SLOW)
312     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
313       coordinate variable
314     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
315       (surface forcing fields), removes some of the functionality
316     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
317     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
318       probably not all: copy _RS surface flux fields to RL field before
319       calling DIAGNOSTICS_FILL
320     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
321       real*4 (CALL EXCH_*_RS) versions.
322     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
323       (generate new output).
324    
325    checkpoint61e
326    o gmredi (Visbeck-variable-K):
327      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
328      - change computation of Visbeck-K where Slope > Smax :        
329        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
330        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
331    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
332      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
333    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
334    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
335      does not become too large (to avoid precision problems in implicit-diffusion
336      solver); update ideal_2D_oce output.
337    o pkg ggl90:
338      - in ggl90_cal.F: compute only one set of visc/diff, used to
339        step forward TKE/T/S/momentum
340      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
341        have Prandlt =1)
342    o gmredi (fm07):
343      - add lower limit on Transition layer thickness + lower limit on 1/lambda
344      - allow to set few more params from data.gmredi
345    o pkg ggl90:
346          - add missing sqrt(2) factor in computation of mixing length
347            scale in ggl90_calc.F
348            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
349    
350    checkpoint61d
351    o adjoint modifs
352      - adapt to new field rhoInSitu
353      - allow to revert from StoreDynVars2D, StoreDynVars3D
354        to individual fields
355        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
356    o store 3-D (in-situ) density in commom block (DYNVARS.h)
357     - save 1 rho computation.
358     - no longer modify T & S inland when using down_slope pkg.
359    o gad_som : allow to switch to SOM advection for T & S without corresponding
360      pickup files (using new S/R: MDS_CHECK4FILE).
361    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
362      (for useSingleCpuIO to work in multi-threaded)
363    o pkg/shelfice:
364     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
365       with SHELFICEtopoFile in data.shelfice
366     - move code for reading ice shelf topography and modifying hFacC into separate
367       subroutines of the shelfice package
368     - separate initialisation of "fixed" and "variable" variables
369     - kTopC is not (yet) replaced by kSurfC, although this is possible
370    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
371    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
372      and rename:
373      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
374      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
375    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
376    
377    checkpoint61c
378    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
379      to add mass source/sink of fluid in the interior (3-D generalisation
380      of oceanic real-fresh water flux).
381    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
382    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
383    o new pkg: down_slope
384      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
385      - presently, modify T & S inland (dwnslp_calc_rho.F).
386        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
387      - implementation for ocean in P-coords not tested.
388      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
389    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
390      (to facilitate conversion of oceanic pkg to p-coordinate).
391    o change FIND_RHO to FIND_RHO_2D :
392      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
393    o new pkg: cheapaml
394    
395    checkpoint61b
396    o exch2:
397      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
398      - no longer depend on the order sequence (N,S,E,W).
399      - 3rd exchange no longer needed (tested with 24 tiles).
400      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
401      - exch_UV_A-grid readily available (but not yet tested).
402      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
403      (both are no longer needed) in exch_uv: no effect in forward run; but
404       get truncation error differences with adjoint exch.
405    o exch2:
406     - change index-bounds storage (moved from target to local tile,
407       more intuitive this way) ; rename/remove some variables.
408     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
409    
410    checkpoint61a
411    o exch2/matlab-topology-generator:
412      fix bug in index bounds for N-S internal exchange (hard to tell if this
413      had any effect on the solution).
414    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
415      is exceeded
416    o testreport: modify syntax of awk, so that it works also with
417      awk, and not only with nawk and gawk
418    
419    checkpoint61
420    o autodiff
421      Change default for TAF usage by removing argument '-nonew_arg'
422      This changes TAF subroutine argument list (ordering of active var.)
423      Omission of this flag leads to incompatibility w.r.t. TAMC
424      To restore TAMC-compatibility, need following modifs:
425      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
426      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
427      Tested TAF version is 1.9.22
428      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
429    
430    checkpoint60
431    --->>> This is the last checkpoint for which generating the adjoint
432    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
433    --->>> by default.
434    --->>> Future checkpoints will ommit this flag by default.
435    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
436    o pkg/grdchk: Add gradient check to etan0 perturbations.
437    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
438    o pkg/autodiff: more flexibility in zeroadj.
439      model/src: modifying do_oceanic_phys.F accordingly.
440    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
441    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
442      special setup of gmredi for which the adjoint is stable
443      enough for parameter optimization.
444    o bridging the gap between eddy stress and GM.
445      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
446          along with a change in CPP option (now ALLOW_EDDYPSI).
447      -> when using GM w/ GM_AdvForm:
448          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
449          is applied either in the tracer Eq. or in momentum Eq.
450          depending on data.gmredi (intro. GM_InMomAsStress).
451      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
452      The key modifications are in model/src/taueddy_external_forcing.F
453      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
454    
455    checkpoint59r
456    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
457      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
458      fix option to read coriolis(@ cell-corner) from files with CS-grid.
459    o pkg/mnc: add some attributes to standard 1D-coordinate variables
460    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
461      mass points, when using mnc for output
462      - add runtime parameter (missing_value, missing_value_int) to override
463        default (which is the value of getcon('UNDEF'))
464    o pkg/mnc: prepare mnc for the actual use of missing values with the
465      diagnostics package: small fix in mnc_cw_readwrite.template and more
466      initialisation of never used fields
467      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
468      versions
469    o pkg/thsice/thsice_ini_vars.F added default initial values so that
470      thermodynamics sea ice solver does not blow up when some initial fields
471      are missing.
472    o move from external_forcing_surf.F to ini_forcing.F
473      the p-coord. hack consisting in using pLoad to set phi0surf ;
474      update output of tutorial_global_oce_in_p (affected @ truncation level).
475    o Freshen up a bit hs94.1x64x5, notably:
476      remove rotationPeriod and tRef=5*0. (adjoint only), and add
477      exactConserv=.TRUE.
478    o pkg/generic_advdiff:
479      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
480      applies to files where Temperature & Salinity 2nd Order moments are used.
481    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
482      this uses a dynamically allocated internal state data structure
483      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
484      and requires a fortran 90 compiler
485    
486    checkpoint59q
487    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
488       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
489    o Refresh tutorial_global_oce_biogeo, notably:
490      - change bathymetry (put back seamounts in ACC, use hFacs)
491      - change EOS (POLY3 --> JMD95Z)
492      - use Bryan-Lewis vertical diffusivity
493      - use multidimensional advection
494      - remove old virtual virtual in dic pkg, now done through ptracer pkg
495      - change a couple of parameters in dic pkg
496    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
497    o pkg/obcs: change default to OBCSfixTopo = .true.,
498      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
499      - replace "debugMode" with "debugLevel .GE. debLevB"
500    o implementation of TAF directives for gchem,cfc,dic
501    o remove "exp5" (replaced by tutorial_deep_convection).
502    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
503      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
504      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
505      --> changes results in exp4, seaice_obcs
506    o tutorial_deep_convection :
507      update the set-up and increase resolution and domain size ; start
508      from pseudo initial conditions = output at t=120mn in order to see
509      something happening when running testreport.
510    o pkg/seaice: add os7mp as an advection scheme
511                  add check for advection schemes
512                  add a flag for restoring T and S underneath sea ice
513    o pkg/my82: add netcdf-support and diagnostics
514    o thsice pkg:
515      - Now hsMax limits snow height by turning it into ice following
516        flooding scheme (and now conserving energy)
517      - Slight rewriting of the formula in thsice_calc_thick.F
518      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
519      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
520    
521    checkpoint59p
522    o gchem / dic / cfc :
523      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
524      - add new parameter files: "data.dic" & "data.cfc" ;
525      - various re-arrangement in initialisation & header file ;
526      - fix tutorial_global_oce_biogeo for multi-threaded test.
527    o pkg/dic: test for "pickup_dic" file when restarting ;
528      if no pickup-file, can restart with a re-initialised pH (same as it did
529      before) providing pickupStrictlyMatch is set to False.
530    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
531      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
532    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
533      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
534    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
535     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
536       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
537    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
538       scheme to use for vorticty-term ;
539     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
540       (with default selectVortScheme, return to original discretisation)
541     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
542    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
543    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
544      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
545      also fix diagnostics VISCAHW & VISCA4W.
546    
547    checkpoint59o
548    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
549    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
550      move a few statemens out the main loop into separate loops
551    o pkg/shelfice:
552      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
553        (kg/m^2/s), does not break tests, because in verification/isomip,
554        rhoConstFresh=rhoConst (by accident)
555      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
556      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
557        new file model/src/seawater.F, so that they are available for all pkgs.
558      - convert potential temperature into in-situ temperature. This changes the
559        isomip tests => update tests
560    o add a flag writePickupAtEnd (default=true) to be able to suppress
561      writing a pickup at the last timestep
562    o tools/mpack-1.6 :
563      - disable automake (not working) and autoconf (not needed).
564      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
565        also cleaner with much less compilation warnings.
566    o pkg/profiles:
567      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
568      (for "less than 32 characters name" compiler requirement)
569    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
570      conditions that have a different sampling frequency than S/T/U/V obcs
571    o pkg/diagnostics (stats-diags):
572      - fix global Min/Max in case 1 processor get only empty tiles
573    o genmake2: replace (4 times)
574         make genmake_tc_1.o >> genmake_warnings 2>&1
575      with
576         COMM="$CC $CFLAGS -c genmake_tc_1.c"
577         echo $COMM >> genmake_warnings
578         $COMM >> genmake_warnings 2>&1
579      to make genmake2 always see the value of CC as specified in the optfile.
580    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
581      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
582      - modify verification advect_cs test to test SOM-advection on CS-grid.
583    o pkg/ctrl:
584      - Rewrite of ctrl_map_ini_ecco.F,
585        introducing a generic routine (ctrl_map_ini_gen.F).
586      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
587    
588    checkpoint59n
589    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
590      number in dedicate array "hdiag":
591      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
592        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
593      - many small changes (integer format) for large number of diagnostics
594      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
595        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
596    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
597      usingSphericalGrid, this allows to define the rotated grid coordinates
598      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
599      geographical coordinates according to the inverse of the rotation defined
600      by the Euler angles, so that Coriolis parameter and online-interpolation by
601      exf works with the geographical coordinates on XC/YC/XG/YG.
602      Naturally, this feature does not work with all packages, so some
603      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
604      profiles), because there the coordinates are assumed to be regular
605      spherical grid coordinates.
606    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
607      - introduce isopycnal diffusion coefficient control.
608    o tools/adjoint_options:
609      - additional control vector components.
610    o pkg/mnc: have mnc create marginally meaning full coordinate variables
611      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
612    o pkg/mypackage:
613      - add example of read/write pickup for state-var ;
614      - add entry points to the main code for state-vars diags & write-pickup.
615    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
616      transitions for useExfYearlyFields
617      - add new subroutine that determines the file to read from for
618        use*YearlyFields = .TRUE. and .FALSE.
619      - add a verification experiment to global_with_exf that tests
620        useExfYearlyFields with USE_EXF_INTERPOLATION defined
621    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
622      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
623      subroutines (which could be generated from a template, because they are
624      almost identical), for now they are included in obcs_prescribe_read.F for
625      simplicity
626    o pkg/exf:
627      - add a little more diagnostic to exf_interp_read (in analogy to
628        mds_read_field, can be turned off with debugLevel < debugLevA=1)
629      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
630        ugly but fast by unrolling short inner loops, inserting a unroll=8
631        directive in routine lagran, and splitting a loop and making do while the
632        outermost loop (the latter requires the intoduction of index arrays)
633    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
634    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
635      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
636    o verification/seaice_obcs: updated for restart test and latest options
637    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
638      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
639      for now this is only available for the C-grid code and also within
640      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
641    
642    checkpoint59m
643    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
644      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
645    o gad_som : fix flux output (& diagnostics) to have same units as other  
646      advection scheme fluxes (was previously multiplied by deltaT).  
647    o added verification/seaice_obcs both to test seaice open boundaries
648      and to provide an example matlab scrpt for generating them
649    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
650    o pkg/salt_plume: clean up salt_plume_frac.F to
651      remove redundancy in PlumeMethod 1 and 4
652    o pkg/kpp: added saltplume diagnostics
653    o pkg/obcs and pkg/seaice:
654      - do not set uice and vice to zero when OB*icefile are unspecified
655      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
656      - moved seaice tracer obcs after call to seaice_growth
657    o pkg/salt_plume: added various options for salt plume depth
658      criterion and for vertical distribution of the salt
659    
660    checkpoint59l
661    o pkg/ptracers: new version of ptracers pickup:
662      read meta file and write only fields which are needed to restart.
663      ( same logic as main pickup file ; also using pickupStrictlyMatch )
664    o pkg/seaice:
665      - add timescale for melting due to warm mixed layer as a means of
666        setting SEAICE_availHeatFrac more conveniently
667      - add a CPP-flag/runtime parameter check for flooding algorithm
668      - reformulated availHeat in seaice_growth.F to be independent of AREA
669    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
670      unit changes
671    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
672    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
673      SX vector computer.
674    o pkg/seaice:
675      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
676        seaice forcing fields can now be read only through pkg/exf
677      - removed some unused halos
678    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
679    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
680      or U/VICE from U/VWIND before computing U/VSTRESS
681    
682    checkpoint59k
683    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
684      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
685    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
686      all experiments pass when compile with un-initialised var. checking option.
687    o added pkg/salt_plume
688    o script to test restart (for now, in MITgcm_contrib/jmc_script)
689    o pkg/seaice: new read/write pickup version.
690      read meta file and write only fields which are needed to restart.
691      ( same logic as main pickup file ; also using pickupStrictlyMatch )
692    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
693    o lab_sea.hb87: modify the domain & update output.hb87.txt :
694      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
695      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
696      process. Fixed here by closing the domain at the Northern boundary.
697    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
698    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
699      a set of consecutive levels in/from a 3-D array.
700    o pkg/ptracers:
701      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
702      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
703    
704    checkpoint59j
705    o in pkgs: dic, obcs, offline, rbcs:
706      standard way to compute coeff. for time interpolation between 2 time reccords
707      which retains full precision (& make results less dependent on compiler).
708      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
709    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
710      packages instead of reading ice cover and wind speed separately
711    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
712     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
713      to allow to compile customized code before the update)
714    o cleaning-up:
715      - fix CPP instruction syntax in pkg/obcs
716      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
717        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
718      - fix some threads issue in IO parts.
719    o pkg/dic:
720      - add tons of "_d 0" (--> much better testreports !)
721       and then update outputs of tutorial_global_oce_biogeo
722    o pkg/mom_fluxform:
723      add a special version of momentum advection intended to conserve momentum
724      next to a bathymetry step or a coastline edge. (default = off = #undef)
725    o new read/write pickup version:
726      - for now, only implemented for main (mdsio) pickup file.
727      - write out only what is needed to restart; merge pickup_nh , pickup_ph
728        and main pickup together.
729      - read meta file; read only what is needed to restart; stop if a field
730        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
731        if it make sense (even if the restart is not perfect).
732      - if no meta file, assume that pickup to read corresponds exactly to
733        a pickup that would currently be written.
734      - read pickup written in the old format (until checkpoint59i) if it
735        recognizes an old meta file (no field-list).
736      - add a meta file in exp. which starts from a pickup: 2 cases:
737        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
738         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
739        b) a meta file describing the content of the associated pickup file
740         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
741    o pkg/mdsio & pkg/rw:
742      - new routine to read a meta file ; new set of routine to read
743        Multiple-fields file (with meta file).
744    o added open boundary conditions capability for seaice
745        HSNOW, HSALT, UICE, and VICE
746    
747    checkpoint59i
748    o adjoint:
749      * fix multiDimAdvection adjoint
750        (partial recomputation problem by TAF for fVerT(:,:,kDown)
751        and comlev1 size definition (maxpass vs. max. number of tracers)
752      * verification/global_ocean.90x45x15 adjoint now tests
753        NLFS and multiDimAdvection using DST3 (=30)
754      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
755    o pkg/kpp: add "_d 0" to real constant (if missing);
756      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
757      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
758    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
759      for internal parameters related to restart process (formerly from PARAMS.h)
760      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
761    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
762      as argument. (only atm2d & obcs write_pickup have not yet been updated)
763    o pkg/monitor:
764      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
765      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
766      - account for deep Atmosphere factor and density factor (anelastic)
767    o added open boundary conditions capability for seaice HEFF and AREA
768    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
769      thermodynamics
770      - requires a little reorganization, which affects the testreport results
771        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
772        so that now the conservative form is tested
773      - add a few comments
774    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
775    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
776    o add new diagnostics to seaice: advective, diffusive fluxes (only for
777      multidim-advection, for scheme 2 they are not filled) and transports,
778      thermodynamic growth rates
779    o change units of EmPmR (inside the code, + within coupling interface)
780      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
781      Affects results @ truncation level (cg2d match) and update output of
782       experiments: lab_sea(6), global_ocean.90x40x15(10),
783      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
784      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
785      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
786      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
787    
788    checkpoint59h
789    o pkg/exf:
790      - improve vectorization by moving if-statement out of loops in
791        exf_mapfields, exf_radiation
792      - exf_bulkformulae.F: introduce 2D fields and vectorize code
793    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
794    o testreport:
795      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
796        monitor & update offline_exf_seaice exp. output.
797      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
798    o pkg/seaice:
799      - bug fix in the evp solver: boundary conditions were affected be
800        masking of zMax/zMin (changes results)
801      - minor bug fix in boundary conditions in seaice_calc_strainrates
802        (changes results for no_slip)
803      - seaice_lsr.F: make interpolation of eta dependent on boundaries
804      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
805      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
806        stress formulation and no-slip boundary conditions
807    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
808      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
809    o pkg/seaice: a first HSALT time stepping equation has been checked in
810    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
811      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
812      without requiring DO-IF statements
813    o pkg/thsice:
814      use continuous power-law function for partition of energy between lateral
815      melting/freezing and thinning/thickening ; old code using step function
816      still available with #undef THSICE_FRACEN_POWERLAW
817      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
818    o testreport: change AD testing : check against results/output_adm.txt
819      using same scripts as for forward test.
820    
821    checkpoint59g
822    o adjoint testing: in preparation for changing testreport:
823      - output format: cost and grad written on separated lines
824      - ad output results in directory "results" (instead of "results_ad")
825    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
826    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
827    o pkg/ecco: allow user defined cost function contributions
828    o testreport:
829      Allow to choose (per experiment) the list of tested output variables
830       and the main variable (used to issue a pass/FAIL ) ;
831      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
832      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
833      Also modify printing of summary:
834       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
835       b) echo the list of tested variables in the individual summary.txt of
836          each experiment.
837    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
838      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
839      (but still depend on the tile decompostion of the domain).
840    o pkg/seaice: change a discretization detail to make the B-grid code
841      "more symmetric". This change is likely to remove all "ridges/leads" that
842      where quasi-aligned with the grid in B-grid solutions. It may also be
843      the solution to the stress coupling issues with the B-grid.
844    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
845      remove .cvsignore from input dir. (since testreport no longer run here).
846    o pkg/thsice:
847     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
848     - fix reshaping of sea-ice just after advection:
849       melt all the ice only if ice-volume is too small.
850     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
851       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
852     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
853    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
854      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
855    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
856      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
857      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
858      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
859      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
860      -> update output.txt
861    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
862     this affects truncation error: -> update output.txt of exp:
863      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
864      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
865    
866    checkpoint59f
867    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
868    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
869      a bounded range (in forward mode)
870    o pkg/ecco, ctrl, autodiff and mom_common:
871     internal parameter controls, completements of implementations
872    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
873    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
874      (not seem any difference in testing results).
875    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
876       at face corners.
877    o pkg/generic_advdiff:
878     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
879      loop range indices for computing vertical advection tendency
880      and do the calculation in the interior only (no overlap) ;
881      for now, only implemented for SOM advection (to save CPU time).
882     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
883    o exch2 adjoint
884      First set of changes:
885      - add exch2 hand-written adjoint templates
886      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
887        This will require cleanup in pkg/autodiff/*.F
888        (changed routines currently kept separate in verif. code/)
889      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
890        that used to hide exch2 or cubed-sphere specific code
891        (commented via 'cph-exch2')
892    o pkg/seaice
893      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
894    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
895       output of global_ocean.cs32x15.thsice .
896    
897    checkpoint59e
898    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
899      for B-grid vector (not yet tested) and C-grid vector (<- only used
900      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
901    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
902      (#ifdef ALLOW_SALT_PLUME)
903    o gather_2d/scatter_2d: removed halo regions
904    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
905      scheme and the corresponding test case (under front_relax dir). For now,
906      only available with Skew-flux form and not yet tested in realistic set-up.
907      adjoint: store directives updated, but gradient checks deteriorated,
908      so maybe GM/Redi adjoint is now broken.
909    o seaice adjoint
910      * add AREA, HEFF, HSNOW as control variable
911        (should not change lab_sea results)
912      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
913    o pkg/seaice:
914      * added computation of saltFlux in seaice_growth;
915        For time being, sea ice salinity is assumed constant
916        contribution of snow flooding to freshening of sea ice is neglected.
917        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
918        defaults to 0.0 in order to maintain backward compatibility.
919        Typical values for SEAICE_salinity are 4 to 10 g/kg.
920      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
921      * added SEAICE_availHeatFrac, which specifies fraction of surface level
922        heat content used to melt or grow ice
923      * commented out cap of HICE: it helps keep ice thinner
924      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
925      * applied OBCS T/S mask to HEFFM sea ice mask
926    
927    checkpoint59d
928    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
929     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
930     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
931    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
932     and change default value of parameter "GM_Small_Number";
933     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
934       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
935       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
936    o pkg/ecco: cost function when applying pkg/smooth to controls
937    o pkg/ctrl: add forcingPrecond run time parameter
938    o pkg/seaice:
939     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
940     - fix bug in metric terms of u-equation in LSR solver (implicit part),
941       changes verification/lab_sea
942     - rearrange implicit part of u-equation in LSR solver to make it easier to
943       read, understand, and debug. This causes changes at the truncation level.
944     - fix (serious) bug in the boundary conditions (sign error in the implicit
945       part) of the LSR solver. Changes all LSR results.
946     - fixed problem with HSNOW initialization to avoid thick snow when AREA
947       is initilized with small values - does not change lab_sea results.
948     - added HsnowFile initialization capability
949    o pkg/smooth: addition to model/src and pkg/ctrl so allow
950     initialization of pkg/smooth and application to control vector
951    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
952    o dependencies: pkg/profiles requires pkg/cal
953    o pkg/profiles:
954     - added option ALLOW_PROFILES_GENERICGRID
955         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
956         that interpolation information (grid points and coefficients) is provided
957         within the netcdf input files.
958         -> sample matlab scripts can be found in MITgcm_contrib/gael
959         that allow you to prepare netcdf input files.
960     - also modified: cleaner include statements, cleaner error print statements,
961       cleaner stops when error, and more tests of the netcdf input files consistency.
962    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
963    o pkg/seaice:
964     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
965       requires a new routine: seaice_diagnostics_fill.F
966     - make sure that seaice does not move if not forced (pressure replacement
967       method, Hibler and Ip, 1995), changes results
968     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
969     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
970       It is turned off by default (=-1.), because it changes the results.
971     - make it possible to read AREA from a file, too.
972    
973    checkpoint59c
974    o add S/R and diagnostics for oceanic mixed-layer depth
975    o move GMRedi call after all vertical mixing schemes (including KPP)
976    o pkg/thsice:
977     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
978      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
979    o pkg/obcs:
980     - bug fix for balance code
981    o pkg/seaice:
982      - allow values of SEAICE_elasticParm > 1
983      - add new parameter SEAICE_evpTauRelax as an alternative
984        to SEAICE_elasticParm
985      - make lsr boundary conditions free slip (by default), changes result
986      - add code for no slip boundary conditions for lsr
987      - set minimum of zeta to zero (and not 4e8) (changes results)
988      - add a cap on AREA after advecting AREA if seaice_growth is not called
989    o change calculation of Visbeck K:
990      - no longer depend on tapering scheme; instead, compute slope (limited
991        by GM_maxSlope). this is equivalent to what was comuted before with
992        clipping or linear tappering.
993      - fix vertical averaging (wrong by 1/2 level)
994      - leave the old version (but will not be maintained) within
995        #ifdef OLD_VISBECK_CALC / #endif
996      - update output of exp. ideal_2D_oce
997    o change error catch in calc_r_star to improve vectorization
998    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
999      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1000    o adjoint:
1001      Re-organized adjoint checkpointing according to Matt Mazloff
1002      (but with modifs/completions/cleanups)
1003      Storing is now bundled into large arrays to optimized I/O
1004      (and second step in cleanup of the_main_loop)
1005    
1006    checkpoint59b
1007    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1008      - export/import (between ocean & coupler) fields needed for ocean DIC.
1009    o pkg/seaice:
1010      - get rid of three more exchanges seaice_calc_viscosities (required
1011        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1012      - bug fix in seaice_ocean_stress (update of lab_sea required)
1013      - reduce loop boundaries to necessary minimum also in seaice_evp
1014      - go back to the old way of computing deltaC/Z as the adjoint likes that
1015        better
1016    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1017      passive tracer to an Age Tracer) + update output.txt
1018    o pkg/exf:
1019      - implement A-grid / C-grid selection for wind-stress input files.
1020      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1021      for now, in exf_bulk_largeyeager04.F only :
1022      - change implementation for case where windspeed + 2. components wind-stress
1023        are read-in. AND use rhoConstFresh to convert evap.
1024    o pkg/seaice:
1025      - use correct EXCH_UV for wind-forcing (on A-grid).
1026      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1027        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1028    o pkg/exf:
1029      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1030      EXF_INTERPOLATION:
1031      - merge global_with_exf/code version of exf_interp_read.F
1032        to the main code ;
1033      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1034        reading the file ; Important: This options needs to be defined to recover
1035        previous code.
1036        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1037      - no longer loose real*8 precision along the way when using exf_iprec=64.
1038    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1039      - change discretisation of evp-solver in order to avoid another exchange
1040        (changes lab_sea) and clean up a little
1041      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1042        help the adjoint (this also changes the results slightly)
1043      - add a few "_d 0" where they had been missing in seaice_evp.F
1044      - cleaning up: remove unused seaice_calc_rhs.F
1045    o pkg/exf: some cleaning-up:
1046      - change various "constants" into runtime parameters
1047      - cleaned-up Large&Yeager04 routine which should eventually
1048        replace exf_bulkformulae.F (changed names of S/R and CPP)
1049        and merged various ALLOW_ATM_WIND options
1050     only used with thsice pkg (in thsice_get_exf.F):
1051      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1052        which are used when useStabilityFct_overIce=TRUE (= the default)
1053      - change default values of ice & snow emissivity and scale downward LW
1054        by ice & snow emissivity.
1055    o pkg/thsice:
1056     fix few little problems, in thsice_calc_thickn.F:
1057      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1058      - melt only laterally if hIce < hThinIce (as the comments say)
1059      and in thsice_extend.F:
1060      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1061      - start to form ice as soon as the minimum ice-volume is reachable.
1062     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1063      and cpl_aim+ocn
1064    o pkg/kpp
1065     - move computation of surface related input fields to KPP into a new
1066       subroutine kpp_forcing_surf.F
1067     - remove wrong (within bi,bj loops) EXCH calls.
1068     - little cleaning (add argument myThid in last position, cvs header ...)
1069     - for now, fix conservation problem by exchanging KPPviscAz (may not
1070       be the best fix)
1071    o pkg/seaice
1072     - check for inconsistent evp parameter/cpp-flag combination
1073     - remove leftover errIO flat for obsolete name list error handling
1074    o OpenAD
1075     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1076    
1077    checkpoint59a
1078    o pkg/seaice: some parameter clarifications and a little bit of clean up
1079    o pkg/thsice: rename run-time parameters:
1080       himin       -> hIceMin
1081       himin0      -> hThinIce
1082       hihig       -> hThickIce
1083       i0          -> i0swFrac
1084       transCoef   -> bMeltCoef
1085       frac_energy -> fracMelting
1086      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1087       with default values (for now) that do not change the results.
1088      remove old version of thsice vars advection in pkg/seaice.
1089    o in FFIELDS.h:
1090      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1091      - make pLoad & sIceLoad always available (but still only used if
1092         ATMOSPHERIC_LOADING is #define).
1093    o pkg/kpp: replaced _KPP_RL with _RL
1094    o bug fixes for vertical diffusivity computations when both KPP and
1095        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1096        are no longer updating the vertical diffusivity array
1097        (passed as argument) but are (re-) setting those arrays.
1098    o pkg/seaice: fix bug in evp solver, while doing that
1099      - change (improve?) discretization of stress computations for both
1100        cgrid-lsr and evp solver
1101      - add a new routine to compute strain rates
1102      - the above changes lab_sea results
1103      - add no slip conditions for evp solver (off by default), lsr-version
1104        may follow
1105      - fix exchange for shear at Z-points (does not change lab_sea)
1106      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1107        (to force the user to pick a time step since there is not "safe" way
1108        of choosing it)
1109      - add principal stress diagnostics
1110      - rearrange fields for evp a little to avoid having to call a: too many
1111        exchanges and b: exchanges for stress trensor components which we do
1112        not have.
1113      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1114        of evp, complete rewrite for lsr case (latter is does not yet work
1115        in all cases)
1116    o pkg/kpp: add code to have mixing in shelf ice caverns
1117      - add myThid to all kpp routines (long overdue)
1118    
1119    checkpoint59
1120    o pkg/exf:
1121      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1122        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1123      - move exf header files from lower_case.h to UPPER_CASE.h ;
1124        add missing cvs Header & Name
1125      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1126      - add namelist param. selectStressGridPosition, exf_monFreq
1127      - retire many _CLIM routines, and remove data.exf_clim
1128        + params moved to data.exf
1129        + climsst, climsss now handled by exf_set_gen, i.e.
1130          climss?period=0 refers to constant field,
1131          climss?period=-12 to monthly forcing
1132      - split up namelists in data.exf
1133    o pkg/seaice:
1134      - remove seaice_exch and seaice_exch_uv
1135      - remove superfluous exchange of theta
1136      - add myThid to seaice_budget_ocean/ice
1137      - add new interface for atmospheric wind forcing (C-grid only)
1138        + new routine
1139        + two new field (taux, tauy for stress over ice)
1140        + removed one global field (DAIRN) for C-grid case only
1141    o pkg/thsise
1142      - 2nd set of modifs for thsice adjoint in conjunction with exf
1143    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1144    
1145    checkpoint58y_post
1146    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1147      vertical diffusivity, similar to that in MOM4; turned on using
1148      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1149      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1150    o Added capability for 3D specification of background vertical diffusion
1151      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1152      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1153      "data" file that contains the 3D vertical diffusivity coefficients.
1154    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1155      - add code within pkg thsice to advect & diffuse sea-ice fields
1156      similar to (and will replace) what has been added in  seaice_advdiff.F,
1157      but: - conserving Mass, Heat & Salt.
1158           - better when using non-linear advection scheme (not yet fully tested)
1159           - can also be used in atmospheric set-up (for now, only the diffusion).
1160    
1161    checkpoint58x_post
1162    o IO option for global-file compact format:
1163      - add options when generating topology (utils/exch2/matlab-topology-generator)
1164      - add I/O capability (pkg/mdsio).
1165      - adapt utils/matlab/rdmds.m to read this format.
1166      for now long-line format not yet supported by pkg/mdsio (& exch2).
1167    o shelfice: add a few diagnostics
1168    
1169    checkpoint58w_post
1170    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1171      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1172      (and replace horiVertRatio in NH code).
1173      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1174                         and tutorial_plume_on_slope (sensitive to truncation)
1175    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1176      directly to drive seaice model (C-grid only)
1177    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1178     - reintroduce computation of wind from stress,
1179     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1180       mass points to avoid tau = 0
1181     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1182    o rdmnc.m: make it work with "global" files created with gluemnc
1183    o rdmnc.m : some improvements in dealing with singleton dimension
1184      (tested on all testreport mnc output files).
1185    o genmake2: disable pkg/profiles if netcdf test fails.
1186    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1187    o move call to cal_readparms up to make calendar parameters/variable available
1188      to all packages
1189    
1190    checkpoint58v_post
1191    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1192      useDynP_inEos_Zc tested.
1193    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1194    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1195      and portions thereof.  See read_cs.txt for description and examples.
1196    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1197      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1198      following the great-circle arc between those 2 points.
1199    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1200      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1201    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1202     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1203     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1204     - still needs work (not working with some options ; efficiency to improve)
1205       and serious testing.
1206     - use this scheme for temperature & salinity in 2 advection test exp.:
1207       advect_xy & advect_xz, respectively.
1208    
1209    checkpoint58u_post
1210    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1211    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1212    o testreport: add option "-skipdir" to skip some test.
1213    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1214      momentum calculation.
1215    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1216    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1217      remove checkpoint.F and the_correction_step.F (no longer used);
1218      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1219    o add option (linFSConserveTr) to correct for tracer source/sink due to
1220      Linear Free surface
1221    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1222    o pkg/thsice: fix reading mnc-pickups
1223    
1224    checkpoint58t_post
1225    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1226    o pkg/mdsio:
1227     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1228       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1229       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1230     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1231     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1232       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1233     - new S/R (to replace MDSWRITEMETA), which allows to write more
1234       informations (variable names, time ...) to meta files.
1235     - modify rdmds.m to give back the meta file content.
1236    o pkg/diagnostics: change vertical interpolation to be safer, and more
1237       flexible (define p-levels to interpolate to in data.diagnostics);
1238      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1239       diagnostic pointer.
1240    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1241    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1242    o fix multi-category seaice:
1243     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1244       SEAICE_MULTICATEGORY
1245     - fix short wave heat flux
1246    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1247       and allow to use EVP solver. Change forward lab_sea: test both EVP
1248       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1249    o Initial check-in of lab_sea adjoint
1250      (very similar to natl_box_adjoint/code_seaice)
1251      * used C-grid and EVP solver
1252      * used KPP, GM/Redi
1253      * uses inAdExact=.TRUE.
1254      * gradient checks fail for both ADM and TLM
1255        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1256        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1257        issue is related to forward mismatch between g77 an ifort
1258    o pkg/seaice: overhaul of thermodynamics
1259     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1260     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1261     - move a few global fields out of SEAICE.h into seaice_growth.F and
1262       make them 2D (FICE/QNETO/ ...)
1263     - remove FO (it is the same as QNETO)
1264     - introduce a few local fields to avoid modifying external fields such
1265       as atemp, etc.
1266    
1267    checkpoint58s_post
1268    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1269      changed exf_set_gen.F so that
1270        genperiod=0 means input file is one time-constant field and
1271        genperiod=-12 means input file contains 12 monthly means
1272    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1273      this affects truncation error ; generate new output file for exp. which
1274      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1275        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1276        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1277        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1278        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1279        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1280    o start implementation of deep-atmosphere and anelastic formulation
1281    o verification: remove 2nd copy of input files and use script "prepare_run"
1282      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1283    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1284    o profiles: fix for multithreaded case
1285    
1286    o diagnostics: rename few diags:
1287      s/'PRESSURE'/'RCENTER '/g
1288      s/'TICE    '/'oceFreez'/g
1289      s/'TAUX    '/'oceTAUX '/g
1290      s/'TAUY    '/'oceTAUY '/g
1291      s/'SWFLUX  '/'oceQsw  '/g
1292      s/DIFx/DFxE/g
1293      s/DIFy/DFyE/g
1294      and add few ocean-forcing diagnostics:
1295      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1296    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1297      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1298      as actual snow thickness.  It now refers everywhere to effective snow
1299      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1300    
1301    checkpoint58r_post
1302    o modifications to pkg/seaice/growth.F, which change results of
1303      lab_sea experiment: fixes pertain to melting snow over open water, to
1304      masking EVAP under sea ice, and to using the correct AREA variable for
1305      computations of EVAP, PRECIP, HSNOW, and GHEFF
1306    o add ability to read bathy, salt, and theta using MNC (off by def)
1307    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1308      both are turned off by default and do no change any results
1309    o seaice advection with pkg/thsice: a step toward the use of non-linear
1310      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1311    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1312      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1313      in natl_box (affects results @ truncation level: update output.txt)
1314    o multi-threading and IO:
1315      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1316      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1317        (needed to work with SingleCpuIO): tested in all verif. exp.
1318    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1319      affects the results (but none of the verification test uses this scheme).
1320    o Adding some pkg/diagnostics capability to pkg/seaice
1321      (will certainly be subject to changes)
1322    o ctrl: adding new control variables:
1323      lwflux, lwdown, evap, snowprecip, apressure, runoff
1324    
1325    checkpoint58q_post
1326    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1327      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1328      high_res_cube configuration by 4% on Columbia.
1329    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1330      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1331      dynamical allocation (seems to work in multi-threaded).
1332    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1333      single CPU io) so that TAF does not have to see EESUPPORT.h
1334    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1335    
1336    checkpoint58p_post
1337    o obcs: stop if obcs is used with useCDscheme = .true.
1338    o shelfice:
1339     - fix a sign error so that no slip at shelfice interface works
1340     - remove stop for combination non-hydrostatic code and shelfice. That does
1341       not mean, that the results are correct, but at least they are numerically
1342       stable
1343    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1344    o added adjoint exch routined for all exch*3d* routines
1345      and updated flow directives
1346    
1347    checkpoint58o_post
1348    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1349      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1350    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1351      and clean-up reading/writing of pickup files.
1352    o fix local version of read/write pickup (NH part) in rotating_tank/code
1353    o simplify EXCH interface:
1354     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1355     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1356    o added the regrid package
1357    o shelfice:
1358     - add a simple boundary layer scheme to reduce noise
1359     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1360    
1361    checkpoint58n_post
1362    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1363       local variable (not in common block).
1364    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1365      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1366      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1367        to work with SingleCpuIO.
1368    o add "_d 0" to real constant of pkg/cfc subroutines ;
1369       update exp. cfc_exemple & tutorial_cfc_offline output files.
1370    o multi-threading and IO:
1371      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1372        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1373      - barrier before and after reading.
1374      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1375      - avoid using MDS_WRITELOCAL for LAND pkg output.
1376      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1377        common-block variables ; Allows multi-threading with master-thread IO.
1378    o change default MAX_NO_THREADS from 32 to 4 ;
1379      and stop cleanly when MAX_NO_THREADS is too small.
1380    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1381    
1382    checkpoint58m_post
1383    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1384       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1385    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1386       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1387       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1388    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1389        add MITgcm_tutorials (= code + all the tutorials)
1390    o ecco, option to compute cost for total ssh (mean+anom)
1391    o consistent with addition of ptracer and ssh in pkg/profiles
1392    o profiles: adding ptracer and ssh
1393    o testreport: change multi-test output-file name
1394      (from output.txt.{name} to output.{name}.txt)
1395    o profiles: now ok for mutli-tiles case
1396    o seaice: add 4 parameters for different advection schemes for area,
1397      (effective) seaice thickness, enthalphy, and snow height. Their default
1398      is the standard parameter SEAICEadvScheme
1399    o calc_gw:
1400     - add cosFacU in zonal viscous flux (harmonic.visc.).
1401     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1402       of tutorial_plume_on_slope.
1403    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1404    o calc_gw: true flux-form, account for horizontal grid spacing.
1405      update rotating_tank results, but not plume_on_slope (affected at
1406      truncation level, 11 digits).
1407    
1408    checkpoint58l_post
1409    o calc_gw:
1410     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1411     - remove side-drag for now (need to fix it); update plume_on_slope results.
1412     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1413    o commit code to make SST/SSS weights spatially variable
1414      (based on either variable in-situ or variable initial T/S weights)
1415    o pkg/ecco:
1416      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1417        now based on horizontally varying weights wthetaLev, wsaltLev
1418      * cost_averagesflags now returns year indices in addition to day, month
1419      * sflux balance is performed on annual basis
1420        (sflxumm, sfluxmm2, bal_sfluxmm)
1421      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1422        including separate counting and multipliers
1423    o pkg/rbcs
1424      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1425    
1426    checkpoint58k_post
1427    o testreport:
1428     - always build in dir. "build" (if not there, mkdir build instead of building
1429       & running in input)
1430     - run in dir run (if it exists), in build otherwise.
1431     - call prepare_run (if input/prepare_run exists)
1432     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1433    o pkg/exf modifications to interpolation and rotation routines for more
1434       reasonable treatment of North Pole singularity: for tracers North Pole
1435       value is set to northernmost zonal-mean value, for zonal velocity it is
1436       set to zero, and for meridional velocity it is set to northernmost value.
1437    o pkg/exf/exf_check_range.F
1438     - add tile index to diagnostics and move stop statement to the very
1439       end of the routine.
1440    o pkg/diagnostics: (diagnostics_main_init.F)
1441      define title of isomorphic variables according to the current config.
1442    o pkg/thsice with pkg/seaice dynamics:
1443    - fix domain of computation (interior only, required for exf) and do exchanges
1444    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1445    o towards a standard way of dealing with multi-threading in MONITOR
1446      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1447    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1448       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1449    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1450    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1451    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1452       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1453    o tracer advection:
1454     - clean-up and simplify calc_common_factors.F
1455     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1456       advection subroutine (but still not used within DST advection S/R)
1457    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1458    
1459    checkpoint58j_post
1460    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1461      from file (collects calls previously in FORWARD_STEP)
1462    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1463    o adjoint store dir. adjusted accordingly
1464    o genmake2
1465      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1466    
1467    checkpoint58i_post
1468    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1469      on wind stress (SEAICEstressFactor defaults to 1.)
1470    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1471      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1472    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1473      on CS-grid: no longer loosing mass.
1474    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1475    o pkg/ggl90: fix sloppy output and fix a bug
1476    o pkg/seaice: added SEAICEuseEVPpickup parameter
1477      - Set to false in order to start EVP solver with
1478        non-EVP pickup files when using SEAICEuseEVP
1479      - fix sign error in diffusion in seaice_calc_rhs
1480    
1481    checkpoint58h_post
1482    * Modifications for bottom topography control
1483      o replace hFacC by _hFacC at various places
1484      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1485      o add non-self-adjoint cg2d_nsa
1486      o update autodiff support routines
1487      o re-initialise hfac after ctrl_depth_ini
1488      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1489    * Adding verification for 5x5 box (4-layer) bottom topography control
1490    
1491    checkpoint58g_post
1492    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1493       used for mean seasonal cycle, mean diurnal cycle); add an example
1494       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1495    o pkg/ggl90:
1496      - add parameter (minimum surface kinetic energy)
1497      - fix bug (avoiding division by zero)
1498    o couple pkg/thsice to pkg/seaice:
1499      - modify advection in seaice to accomodate new scalar fields to be advected
1500      - only muliDimAdection scheme work with seaice/thsice
1501      - mapping of thsice-variables to seaice-variables, back and forth
1502      - does not break the verification experiments, but does not give the
1503        desired results either
1504    o pkg/seaice
1505      - make (default) second order advection a bit less confusing?
1506    
1507    checkpoint58f_post
1508    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1509      to pkg/seaice):
1510      - new routines thsice_map_exf and thsice_get_exf provide the interface
1511      - add an additional formal parameter to thsice_solve4temp
1512    o pkg/exf:
1513      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1514      - correct Stefan-Boltzmann constant
1515      - new parameter for longwave surface emittance
1516      - separate some stuff from exf_bulkformulae into new routines  
1517        exf_radiation, exf_wind
1518      - add new parameters and constants: longwave emissivity for ocean, ice
1519        and snow, evaporation parameters over ice
1520      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1521        either wind from stress or stress from wind
1522    o pkg/thSIce:
1523    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1524    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1525       and THSICE_CALC_THICKN
1526    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1527    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1528      to make debugging easier.
1529    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1530    o pkg/bulk_force:
1531      - clean-up comments and parameters ;
1532      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1533    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1534      generate new output for test-experiment: aim.5l_cs.thSI
1535    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1536      testreport accordingly
1537    
1538    checkpoint58e_post
1539    o SEAICE_CGRID adjoint done
1540    o R_STAR adjoint implemented.
1541      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1542      * need to sort out init. of h0facc, etc.
1543    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1544      to be able to use it in pure forward.
1545    
1546    checkpoint58d_post
1547    o upgrade simple test-experiment to tutorial example:
1548     step.1: duplicate the experiment and (step.2) will remove the old copy.
1549      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1550      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1551      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1552      tutorial_global_oce_biogeo    <- copy of dic_example
1553      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1554      tutorial_plume_on_slope       <- copy of plume_on_slope
1555      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1556      tutorial_global_oce_optim     <- empty for now (David ?)
1557      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1558     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1559    o correct a sign problem in cost_scat.F
1560    o obcs and ptracers: fix boundary conditions for advections schemes
1561      with larger stencil
1562    o thsice adjoint: start
1563    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1564      completeness
1565    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1566      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1567    o ptracers adjoint:
1568      * avoid extensive recomputatations
1569      * fix missing re-init. of gptr (missed by TAF)
1570    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1571      me to turn off the excessive output to STDOUT that this package produces
1572    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1573      and add those terms in Vector-Invariant formulation.
1574    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1575      if the control period (xx_hfluxperiod etc) is 0
1576    o in profiles pkg, clean routines and fix details
1577    o in ecco pkg, reading ssh data:
1578      fix problem in case the model does not start at iter0=0
1579    o fix mnc-pickup/restart for ptracers
1580    o new package prifiles:
1581      code to compute profile-based cost by Gael Forget
1582      (modifs in ecco, ctrl, autodiff)
1583    o Benign bug fix in initialization (spotted by M. Mazloff) of
1584      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1585    
1586    checkpoint58c_post
1587    o adjoint: finish NLFS adjoint and provide reference output in
1588      verification/global_ocean.90x40x15/results_ad_nlfs
1589    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1590      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1591      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1592      with SEAICE_CGRID defined.
1593    o move calendarDumps from "data" to "data.cal" and clean-up the code
1594      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1595    o add useEXF & useCAL flags (for now, set in hard-coded way)
1596    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1597      (were missing in NH mode, and wrong in quasihydrostatic mode).
1598      waiting for Chris updated version of calc_gw to add those CALLs.
1599    o fix bug in quasihydrostatic S/R ;
1600      add a test for this option: global_ocean.90x40x15.qshyd
1601    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1602      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1603    o add on/off flag useOffLine for package OFFLINE
1604    o seaice:
1605      - modify advection so that it works also on the C-grid
1606      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1607        problem in multi-tile runs with C-grid
1608      - add flags for clipping ice velocities and/or masking solver forcing
1609      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1610        C-grid solver
1611      - added a few comments to seaice_diffusion.F
1612      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1613        are now exclusive)
1614      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1615        required re-ordering the code a little:
1616       + make DAIRN global variable (defined in SEAICE)
1617       + move computation of the viscosities eta and zeta into a new separate
1618         routine (because I need to recompute them in seaice_ocean_stress.F)
1619    
1620    checkpoint58b_post
1621    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1622      update output.txt of exp. aim.5l_cs.thSI
1623    o various mnc cleanups and improvements:
1624      + shrink lookup tables by factor of ~4
1625      + better error reporting when running out of lookup space
1626      + able to handle longer path/file names (up to 500 chars)
1627    o adjoint:
1628      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1629      - TBD: "hidden" mom_vecinv recomp. in dynamics
1630    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1631     (allow to differentiate between forcing components using new integer flags:
1632      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1633     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1634    o ecco
1635      - enable trend removal from SSH anomaly obs.
1636    o adjoint
1637      - a fix for PmEpR when #undef EXACT_CONSERV
1638      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1639      - try to fix "hidden" recomp. in forward_step for NLFS
1640        (NLFS seems broken sometimes after I checked it in)
1641    o seaice:
1642     - add c-grid version of the dynamic solver:
1643       + three new routines that are the c-grid substitute lsr, dynsolver
1644         and ostres
1645       + put a few fields that were local to dynsolver into global common
1646         blocks, so that I can move the computation of stresses etc into
1647         seaice_lsr (saves coding but may break the adjoint).
1648     - replace more hardwired parameters by runtime parameters
1649     - add ice masks that mask the rhs of the implicit solvers where there
1650       is no ice (commented out in seaice_dynsolver, because i am not sure
1651       if this works properly), eventually this should replace the clipping
1652       of ice velocities in seaice_dynsolver to +/-40cm/s.
1653    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1654      include it only where its needed
1655    o move balancing of fluxes before the call of external_forcing_surf
1656    o seaice:
1657      - correct units of turning angles (now they are really in degrees)
1658      - move computation of GWATX/Y out of main routine into dynsolver
1659      - initialize GWATX/Y in seaice_init
1660    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1661      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1662    o seaice: add runtime flags for turning angles (default to zero)
1663    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1664      and trend from exf forcing and ctrl control adjustments
1665    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1666      (since checkpoint57x_post)
1667    o change the default rotation period to 86164.s = the Earth rotation
1668    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1669      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1670    o seaice advection: add code for choosing between the default (2nd order
1671      central differences) and multiDim advection schemes provided by
1672      pkg/generic_advdiff
1673    o seaice:
1674      - removed all references to SEAICE_GRID.h fields from
1675        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1676        (cubed-sphere configuration will change a little)
1677      - grid computations in seaice_init are obsolete now.
1678      - cleaned up code a little so that is easier to read (hopefully).
1679      - added new (better?) discretizations of default advection and diffusion
1680        (turn on with SEAICEuseFluxForm)
1681      - replace 1 in 3d global fields by kSurface in growth.F
1682      
1683    checkpoint58a_post
1684    o seaice:
1685      - bug fix in advect.F
1686    o shelfice:
1687      - separate shelfice load anomaly from pload (breaks with time
1688        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1689        Its default is 0., but it may be computed more cleverly from (unknown)
1690        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1691        done offline. A good approximation of the pressure load anomaly is
1692        necessary to avoid large initial adjustment processes underneath
1693        deep-reaching shelfice.
1694      - small fix in ISOMIP shelfice_thermodynamics
1695      - add more sophisticated thermodynamics of Hellmer (1989), this is
1696        now the default
1697      - give a few constants more intuitive names
1698    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1699      if bulk formulae are used in long integration (especially EmPmR). Turn
1700      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1701      if balancePrintMean, the imbalance that is substracted is printed to
1702      STDOUT.
1703    o fix bug (typo) in obcs_apply_eta.F
1704    o add a new package shelfice which enables us to model the circulation
1705      underneath shelf-ice with draughts of hundreds of meters.
1706     - works
1707     - to do: + include improved thermodynamics
1708              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1709                instead of new field kTopC
1710              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1711                instead of new field R_shelfIce and new code in ini_depth.F
1712                and ini_mask_etc.F?
1713              + adjust vertical mixing schemes?
1714    o seaice pkg:
1715     - add a cpp-flag to include a simple formula for a salinity dependent
1716       freezing point of sea water at the surface
1717     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1718       meridional stresses are now different (and hopefully correct)
1719    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1720       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1721       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1722    o pkg/diagnostics: add options and parameters for regional-statistics
1723       diagnostics ; define regions by reading a region-mask from a file
1724       (might add other options later)
1725    o pkg/bulk_force:
1726     - add option and parameters to use AIM surface-flux formulae.
1727     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1728       others forcing fields (defined in PARM05, parameter file "data") are loaded
1729       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1730     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1731     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1732     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1733       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1734     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1735    
1736    checkpoint58
1737    o add "--embed-source" option to genmake2 which, when the supporting
1738      tools can be compiled (as determined by genmake2) will turn on the
1739      embed_files package which then embeds the entire MITgcm source code
1740      (*.[fFhc] + Makefile) used for the build within the executable
1741      - requested by CNH but off by default
1742      - adds a paltry <9MB to the mitgcmuv executable in most cases
1743      - only writes the output when useEMBEDSRC in eedata is true
1744    o clean up 3-dim. relaxation codes:
1745      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1746      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1747      * Thanks to Tom Haine for testing!
1748    
1749    checkpoint57z_post
1750    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1751      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1752    o fix the pickup behavior for obcs in combination with ptracers
1753    o fix a bug in ptracers_external_fields_load
1754    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1755      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1756    o transfered surface NH pressure to eta field (if exactConserv).
1757    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1758         and update lab_sea output.txt file.
1759    o completing 3-dim. relaxation code: additional term
1760         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1761      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1762      * At compile time, in "EXF_OPTIONS.h" set
1763          #define  ALLOW_CLIMTEMP_RELAXATION
1764          #define  ALLOW_CLIMSALT_RELAXATION
1765      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1766          tauThetaClimRelax3Dim = 15552000.0,
1767          tauSaltClimRelax3Dim  = 15552000.0,
1768      * 3 cases:
1769          1) Use a constant-in-time 3-dim. field
1770          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1771          3) Real-time relax. to time-evolving prescribed field
1772    o Adding Laplacian-type smoothness constraint on
1773      initial and boundary (forcing) controls (ic, bc)
1774      * enable at compile-time via
1775        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1776      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1777      * Absolute scale somewhat unclear so far
1778      * no area weighting was included since no other cost term does so far
1779    
1780    checkpoint57y_post
1781    First step for a NLFS adjoint
1782    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1783    o new init. routines for calc_r_star, calc_surf_dr
1784    o still need to deal with ini_masks_etc
1785    o testreport seemed happy
1786    checkpoint57y_pre
1787    
1788    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1789    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1790    o add new offset feature to offline pkg (plus minor cleanup)
1791    o cfc fixes for final year of integration
1792    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1793      be in GCHEM_OPTIONS).
1794    
1795    checkpoint57x_post
1796    o fix testreport Pb in multiple test experiment.
1797    o cleanup our namelist syntax in verification:
1798      - make it more F95 standards compliant (some work still needed)
1799      - allows the vast majority of our tests to work with gfortran
1800    o Non-Hydrostatic:
1801     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1802     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1803    o Allow to apply AB on T,S rather than on AB(gT,gS):
1804     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1805     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1806       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1807     - need a "clever" read_pickup to restart from the other AB formulation
1808    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1809    o remove some unused variables (reduces number of compiler warnings)
1810    o adjoint
1811      * Disable useVariableViscosity for adjoint for time being
1812        (there are a number of extensive recomputations)
1813      * Initialize certain variables needed for adjoint
1814    
1815    checkpoint57w_post
1816    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1817                 fix the singleCpuIO RS version of MDSWRITEFIELD
1818       and add a WARNING if using globalFiles=T with multi-processors.
1819    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1820      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1821    o tracer advection scheme:
1822      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1823       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1824       was not very convenient).
1825      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1826       (further tests needed for the implicit DST & Flux-Limiter schemes).
1827    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1828      and sRef for convenience, handy, when you want to initialize
1829      ptracers in a large domain with a constant non-zero value. Also,
1830      untangle ptracers_init.F a little.
1831    
1832    checkpoint57v_post
1833    o change dome exp. to use variable viscosity in side-drag terms.
1834    o remove all the files from the cfc_offline test since they are now
1835      incorporated into tutorial_cfc_offline which has been producing
1836      identical results for a few days of testing
1837    o add new parameter: sideDragFactor to enable half-slip-side BC
1838      and change side-drag S/R to use viscosity from mom_calc_visc
1839      (can switch back by setting sideDragFactor=0.); affects results at
1840      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1841       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1842    o vorticity & strain are now computed without masking, to account for
1843      no-slip-side BC in variable viscosity calculation ; mask is applied
1844      anyway later on, before computing advection/coriolis terms.
1845    o modify exp4 to test new obcs support for reading from external files
1846      and for passive tracers
1847    o fix behavior of ptracers_monitor when monitor output is written to a
1848      netcdf-file; still not independent of monitor.F (writes in the same
1849      file).
1850    o change default value of tRef (put a uniform, meaningful value for ocean
1851      & atmos) and initialize sRef (was missing, as Martin mentioned).
1852    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1853      to be proportional to enstrophy dissipation length.  Thus,
1854       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1855      This is now consistent with Smagorinsky and with the manual.
1856    
1857    checkpoint57u_post
1858    o OBCS and PTRACERS: add open boundary support for passive tracers
1859      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1860        OB-values from file; this is not different from the way theta and salinity
1861        are treated
1862      - however, Orlanski-radiation conditions are not supported, and the model
1863        will stop if you use pTracers and Orlanski at the same time.
1864      - beefed up the rountine obcs_external_fields_load: now only those open
1865        boundary values are overwritten with values from files for which there
1866        are really files, otherwise the OB-fields remain untouched. This makes
1867        it possible to use different OBs at different ends of the domain (as
1868        with EXF)
1869    o reduce number of exch calls in shap_filt (s2).
1870    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1871      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1872    
1873    checkpoint57t_post
1874    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1875    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1876      same truncation, independent of the face number: affects affects several
1877      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1878    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1879      note that biharmonic viscosity + no-slip was not tested in any experiment.
1880    o fix bug in non-linear free-surf side-drag ; generate new output for
1881      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1882    o make mnc honor the writeBinaryPrec flag for most kinds of output
1883    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1884    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1885      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1886    o add brackets in multi-terms sum to get same truncation, independent of
1887      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1888      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1889    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1890      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1891      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1892      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1893      Suggested values of viscosity parameters found in mom_calc_visc.
1894      Many new viscosity diagnostics available.
1895    
1896    checkpoint57s_post
1897    o Add clearing-house for viscosity calculations, mom_calc_visc and
1898      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1899      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1900      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1901      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1902      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1903      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1904      ViscAhStrain and viscAhTension are now retired.
1905    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1906    o In response to JMC's bug report, genmake2 now ignores any soft-links
1907      that it finds in the *current* directory when searching for files.
1908      Soft-links found in any other source directories will still work as
1909      they did before.
1910    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1911      a C routine to unlimit the stack size
1912    o mnc-ify pkg/aim snapshot vars
1913    o mnc-ify pkg/land as requested by Daniel
1914    o various changes to mnc including:
1915      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1916      - output can now be grouped so that all files within a group
1917          change the ITER portion of their names in lock-step together
1918      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1919          and works with both EXCH1 and EXCH2 (but needs more testing)
1920      - writing works for all verification test cases w/ g77 on Linux
1921    
1922    checkpoint57r_post
1923    o make MNC variable initialization happen earlier
1924    o add diagnostics for (almost) each term of the momentum Eq.
1925    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1926    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1927    o remove MINIMAL_TAVE_OUTPUT option ;
1928      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1929    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1930      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1931    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1932    o add time-dependent SST, SSS control
1933    o cost terms in ecco/ modularized (new cost_generic.F)
1934    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1935    o new infrastructure for seaice model vs. obs misfits in seaice/
1936      * driver from the_main_loop.F is seaice_cost_driver.F
1937      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1938      * gradient check in Exp. 6a of natl_box_adjoint/
1939    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1940      (see README file)
1941    
1942    checkpoint57q_post
1943    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1944    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1945      - bug was reported by Jean-Michel and Ian Fenty
1946    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1947      update exp. cpl_aim+ocn output.
1948    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1949      Needed for high-res. runs with large global files
1950      to be able to limit tapelev size
1951    o Changed some tests for adjoint:
1952      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1953      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1954      * global_ocean.90x40x15/ back to default 3-level checkpointing
1955    o Modifications to enable scripted COMMON to MODULE conversion
1956      * verification/OpenAD/code/ has necessary scripts and description;
1957      * converts, compiles and runs successfully;
1958    
1959    checkpoint57p_post
1960    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1961    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1962      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1963    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1964    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1965      (was already the case for dissipation with mom_vecinv,
1966       and also the case for grad.PhiHyd when staggered-timeStep)
1967      This will allow to put dissipation out-off the AB time-stepping.
1968     Unfortunately, affects truncation error. Update output of exp. that "fails"
1969      (cg2d matching number) and leave the others for later: front_relax(10),
1970      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1971      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1972    
1973    checkpoint57o_post
1974    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1975      (2) its ready to be documented during the 20050801 DocFest
1976    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1977      for ideal_2D_oce and lab_sea on linux_ia32_g77
1978    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1979      in global1x1_tot/code_seaice_adj to access indices 32, 33
1980      (worth another tag)
1981    
1982    checkpoint57n_post
1983    o adding precip control xx_precip 32
1984    o adding swflux control xx_swflux 33
1985    o Replacing 10 forcing penalty cost routines by 1 generic.
1986    o Implementing partitioning in time-mean and variable adjustment
1987      for atmos. state.
1988    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1989    o in natl_box_adjoint:
1990      * updated exp 1 to 10
1991        (but does not have time-mean vs. variable split results yet)
1992    o updated global1x1/*_seaice_adj/
1993      to incorporate latest changes
1994    o enable useSingleCpuIO for mdsio vector routines
1995      (applies in particular to tapelev I/O)
1996    o removed inefficient K-loop in all active_file*control*.F
1997    
1998    checkpoint57m_post
1999    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2000      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2001    o pkg/exch2: filling of face-corner halo regions is optional
2002      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2003    
2004    checkpoint57l_post
2005     tag before updating tutorials (pre-release-2)
2006    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2007       for output and interpolation of input fields onto model grid)
2008    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2009       Affects results of exp. rotating_tank ; update output.txt.
2010    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2011          and taking the square quantity and/or using a fraction-weight field.
2012    o fix aim_diagnostics_init.F mate numbers.
2013    o add mnc output capability to diagnostics/diagstat and update
2014      our cvsignore files for the ACSII output generated
2015    
2016    checkpoint57k_post
2017    o lab_sea now uses diagnostics package and provides a suite of
2018      new EXF diagnostics output.
2019    
2020    checkpoint57j_post
2021    o exf
2022      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2023        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2024        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2025      * extended diagnostics output
2026        - now includes all EXF variables
2027        - hs, hl moved to common block
2028        - separate S/R for diagnostics, called after ctrl vector is added
2029        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2030        - EXFqnet contains true Qnet (i.e. includes qsw)
2031      * updated verif. lab_sea, global_with_exf
2032      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2033        to ensure that diagnostics sees a true EXFqnet
2034    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2035    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2036      several times with different frequencies.
2037    o mnc-ify the thsice package as requested by Daniel Enderton
2038      - the monitor--MNC output needs work
2039      - many attributes need to be added (most are currently blank)
2040    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2041      - many attributes need to be added (most are currently blank)
2042    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2043    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2044    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2045      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2046         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2047    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2048     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2049    
2050    checkpoint57i_post
2051    o Diagnostics package was changed: diagnostic allocation is now deactivated
2052      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2053    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2054      add 1rst Order upwind vertical Shear.
2055    o add a quick fix for A/B checkpointing in OFFLINE mode
2056    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2057      end-run around the C/Fortran linking horror in eesup/src/timers.F
2058    o added pkg/runclock: allows user to terminate run based on wall clock
2059    o added non-hydrostatic scaling parameter: nh_am2
2060    o pkg/my82: futile attempt to make results compiler-independent by adding
2061      some "_d 0", etc. no effect.
2062    o for mnc output, fill the 'T' coordinate var with myTime and create a
2063      separate 'iter' variable for iteration count
2064    o pkg/diagnostics:
2065      add new capability: output of Global/Regional & per-level statistics ;
2066      tested against monitor output (including land & thSIce) on various exp.
2067    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2068    
2069    checkpoint57h_done
2070      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2071      data.diagnostics, data.gchem, data.ptracers) is done.
2072    
2073    o pkg/diagnostics: prepare for Global/Regional statistics.
2074      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2075    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2076      and rename it: DIFFERENT_MULTIPLE
2077    
2078    checkpoint57h_post
2079    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2080    o pkg/diagnostics: change output frequency, now in seconds (instead
2081      of Nb of iterations). This requires to change data.diagnostics.
2082    checkpoint57h_pre
2083    
2084    o in mnc, let the user create the output dir if both mnc_outdir_date
2085      and mnc_outdir_num are false
2086    o add fflags() to pkg/diagnostics which allows one to specify, on a
2087      per-file basis, the file precision [default behavior is unchanged]
2088    o added diagnostics to pkg/kpp, including computation of mixed layer
2089      depth based on a temperature/density criterion
2090    o updated verification/natl_box to test the new pkg/kpp diagnostics
2091    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2092    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2093    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2094      not mnc -- this mistake was found by JMC and is now corrected
2095    
2096    checkpoint57g_post
2097    o add Adams-Bashforth 3rd Order time stepping:
2098      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2099      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2100    checkpoint57g_pre
2101    
2102    o make lambda[Theta,Salt]ClimRelax spatially varying
2103      (default remains spatially uniform constant based on tau)
2104    o added new control variables
2105      * init. uVel, vVel, etanN
2106      * lambda[Theta,Salt]ClimRelax
2107    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2108      (suggested by G. Forget)
2109    
2110    checkpoint57f_post
2111    o add parameter "baseTime" = model base time = time at iteration zero
2112      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2113      account for baseTime shift
2114    o move Coriolis arrays from PARAMS.h to GRID.h
2115    checkpoint57f_pre
2116    
2117    o mnc-ifying the seaice package
2118    o introduced an alternative length scale calculation for use in the limiting
2119      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2120    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2121    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2122      as well as grad(vort3).  Made it compatible with both approximate form
2123      for the cubed sphere and full form of these gradients.  Added flag
2124      useFullLeith to select between approximate and full form.  
2125    o add "d0" in getcon.F to reduce differences between compilers/platforms
2126      update output.txt of exp. fizhi-gridalt-hs
2127    o change port_rand funtion to allow to set the seed.
2128    o fix obscure MNC bug involving conversion between reals and integers
2129      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2130        new version is now more standards-compliant
2131    o adjoint-related modifications
2132      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2133      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2134      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2135    
2136    checkpoint57e_post
2137    o Adding eddy stress controls a la Ferreira et al.
2138    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2139    
2140    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2141      update output.txt of exp. fizhi-gridalt-hs
2142    o add more "Z" dimensions and associated coordinate vars to MNC
2143    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2144    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2145      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2146      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2147      months and years.  Requires pkg/cal.
2148    o diagnostics: add pickup functionality
2149      - off by default for backwards compatibility
2150      - current version only uses MDSIO -- MNC will be added
2151    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2152    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2153    
2154    checkpoint57d_post
2155    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2156    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2157      output from the diagnostics package
2158    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2159    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2160      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2161    o add coordinate variables to the MNC output from the diagnostics package
2162    o change MNC-flags default value: true when useMNC=TRUE
2163    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2164      the ability (off by default) to read the grid information using MNC
2165    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2166    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2167    o do snap-shot diagnostics at the middle of the time-interval (instead of
2168      at the end).
2169    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2170      new test for AIM with thSIce + slab-ocean
2171    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2172    o move state variable diagnostics to the beginning of the time step ;
2173      (note: still needs some work specially for snap-shot diagnostics)
2174      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2175    
2176    checkpoint57c_post
2177    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2178    o generate new output.txt files on faulks with g77 & the new -ieee option
2179    checkpoint57c_pre
2180    
2181    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2182      update output.txt of exp. global_ocean.90x40x15
2183    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2184      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2185    o add saltFlux(+File) forcing capability with periodicExternalForcing
2186    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2187    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2188    o improvements for the MNC output from DIAGNOSTICS:
2189      - correct handling of the unlimitied dimension
2190      - all dims now have associated coordinate variables
2191      - variables located at U, V, and Corner ("Z") points are now written
2192        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2193        *all* data points are output
2194    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2195    o added pkg/seaice/seaice_monitor.F
2196    o mdsio_readfield.F can now read files visible only to master MPI process.
2197    o pkg/seaice: some test code for ice-modified ocean stress
2198    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2199      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2200      spurious negative numbers for precipitation and humidity.  Will cause
2201      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2202    o pkg/ctrl/
2203      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2204        May be enabled via doPackDiag
2205      *  introduce z-scaling of
2206         + gradient (doZscalePack) and
2207         + control (doZscaleUnpack)
2208    o pkg/mdsio/
2209      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2210      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2211    
2212    checkpoint57b_post
2213    o simplify options in diagnostics_fill arguments (remove weird combinations)
2214    o fix MNC coordinate variables so that they now contain per-face index
2215      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2216      general, EXCH2 grids are only aligned to a "local" coordinate system
2217    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2218    o Implement instantaneous output within pkg diagnostics:
2219      setting a negative frequency in data.diagnostics produces
2220     "snap-shot" output (as opposed to time-average if freq > 0)
2221    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2222      NOTE: change ptracer diagnostics name: use 2 characters to work with
2223            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2224    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2225      becomes the coordinate variable for the 'T' dimension
2226    o add CF-style coordinate variables to MNC
2227      - just a first cut:  numbers are meaningless on the cubesphere and
2228        missing along the T axis but otherwise it works!
2229    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2230    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2231    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2232      this is based directly on what the model compute, so that the content of
2233      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2234    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2235    o clean up build options files for SunOS, in particular
2236      - remove -traditional from xmakedepend
2237      - change -xarch=v9 to -xarch=native for f77
2238      - restore use of make (not gmake)
2239      - add CC=gcc if using g77
2240    o changes per discussion of AM, JMC, & EH3 today:
2241      - move redundant "grid" variables out of "state" -- in preparation of
2242        creating proper CF-style coordinate variables and in recognition
2243        that any/all grid variables can be easily copied (eg. w/NCO) from
2244        the grid files into any of the other NetCDF files
2245      - *always* output grid variables with MDSIO (this will eventually be
2246        changed)
2247      - output MNC grid file if useMNC is true
2248    o every instance of _END_MASTER() has been found and replaced with
2249      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2250      preprocessors
2251    o re-arrange diagnostics pkg initialisation:
2252     - allow each package to extend the available diagnostics list
2253     - add some checking and fix small problems (multi-threaded, ...)
2254     - new S/R diagnostics_fill (replace fill_diagnostics):
2255       look through the short list of active diag. (instead of the long list)
2256       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2257    
2258    checkpoint57a_post
2259    o this set of changes restores TAMC compatibility
2260      tested for global_ocean.90x40x15 adjoint on trough
2261      (what a pain)
2262    
2263    checkpoint57a_pre
2264    o some modifs in tools/build_options for sunos
2265    o call ctrl_pack for ctrl at end for optimcycle=0
2266    
2267    checkpoint57
2268    o add horizontal bi-harmonic viscosity for vertical velocity
2269      - new parameter viscA4W (defaults to viscA4)
2270      - affects only non-hydrostatic code
2271      - to be done: no-slip lateral boundary conditions
2272    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2273    o implement Implicit Vertical advection for pTracers
2274    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2275      (implemented also for implicit vertical diffusion & advection)
2276    o OBCS: extend application of tracer open boundary conditions
2277      to a strip beyond the boundary of width Olx/Oly
2278    o add call monitor to TAF set of required calls (flow directives)
2279      and include in natl_box_adjoint
2280    o untangle a few ifdefs related to cost, ctrl, autodiff
2281      untangel a few ALLOW_ECCO_OPTIMIZATION
2282    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2283      (theta2, salt2 in ecco_cost_weights)
2284    
2285    checkpoint56c_post
2286    o OBCS as control variables
2287      - update ctrl_ad_diff.list, obcs_ad_diff.list
2288      - remove balance of obcs controls from default
2289      - fix index bug nobcs in ctrl_init
2290      - fix dummy fields filen in ctrl_pack
2291      - add dummy weights for obcs
2292    o lsopt: comment out fort.94 output
2293    o optim:
2294      - remove unnecessary header files
2295      - adjusted namelists
2296      - add xerbla.F to Makefile
2297    o exf:
2298      - multiple modifications of exf_check_range
2299      - unit change in exf_init_runoff from [m/year] to [m/s]
2300    o mdsio:
2301      - i/o-vector change debugLevel from debLevA to debLevB
2302    
2303    checkpoint56b_post
2304    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2305      is called from DO_THE_MODEL_IO
2306      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2307      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2308      - clean up PTRACERS_WRITE_TIMEAVE a little
2309    o add another verification experiment that tests both the cfc-pkg and
2310      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2311      reactive tendencies treated inline with regular timestepping
2312    o testreport previously did a lousy job of comparing small numbers, so
2313      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2314      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2315      testreport.
2316    o ptracers_monitor: bug fix for MPI
2317    
2318    checkpoint56a_post
2319    o GCHEM: finish reorganizating the package
2320      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2321        (introduces another 3D-array for each passive tracer, but only if
2322        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2323        gchemTendency is not needed because the timestep is done separately)
2324      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2325      - GCHEM is now---more or less cleanly---separate from PTRACERS
2326      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2327        so clear to me how that should be done in a general way.
2328    o CFC: improve formatting of output in CFC_ATMOS
2329    o PTRACERS:
2330      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2331        that ALL experiments with ptracers enable can be checked. This makes
2332        GCHEM_MONITOR obsolete.
2333      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2334        monitorFreq
2335      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2336    o add PTRACERS (PTR0[1-5]) to testreport output
2337    o exf_check_range:
2338      * default changed to .TRUE.
2339      * will check values for niter0 if debLevA, every timestep if debLevB
2340      * STOP in exf_check_range if 'out of range'
2341      * range chosen generous to allow for potential extema
2342      TBD: a version with stricter range
2343           permitted range would be runtime parameters
2344  o GMredi:  o GMredi:
2345    - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;    - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2346    - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.    - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
# Line 11  o GCHEM: Line 2349  o GCHEM:
2349    - move call to GCHEM_FORCING_SEP, so that it is now called before    - move call to GCHEM_FORCING_SEP, so that it is now called before
2350      the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP      the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2351    - introduced a useGCHEM runtime flag and applied it everywhere.    - introduced a useGCHEM runtime flag and applied it everywhere.
2352      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2353        this flag is now only visible within GCHEM-pkg routines.
2354      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2355        be replaced by a 3D array that is computed before thermodynamics; for
2356        this, the tracer ID iTracer had to be included into the parameter list
2357        of ptracers_forcing
2358      - set up forward_step to call gchem_forcing, that will replace
2359        gchem_forcing_int in ptracers_forcing
2360      - cleaning up
2361  o small cleaning of exch2: remove files that are also in eesupp/src  o small cleaning of exch2: remove files that are also in eesupp/src
2362    
2363  checkpoint56  checkpoint56
# Line 229  o add two new packages Line 2576  o add two new packages
2576    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2577    - these scheme operate in a similar manner as KPP (without ghat, of    - these scheme operate in a similar manner as KPP (without ghat, of
2578      course), however there is only one diffusivity that is used for both      course), however there is only one diffusivity that is used for both
2579      temperature and salinity (and passive tracers)ç      temperature and salinity (and passive tracers)
2580  o add offline package  o add offline package
2581  o add "verification/dic_example" which contains a dic-gchem-ptracer setup  o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2582    provided by Stephanie Dutkiewicz    provided by Stephanie Dutkiewicz

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