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revision 1.808 by jmc, Thu May 3 22:57:27 2007 UTC revision 1.1132 by jmc, Thu Jun 25 15:55:40 2009 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint61r
8    o pkg/seaice:
9     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
10      1. introduce fields for time step (N-1)
11      2. do not use levels 2 and 3 anymore (but keep them)
12      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
13         includes changes to pkg/thsice/thsice_get_velocity.F,
14         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
15         pkg/obcs/obcs_apply_uvice.F.
16     - completely remove code for leap-frog time stepping for second order
17       advection
18     - adjusted adjoint accordingly;
19       gradient checks have improved by an order of magnitude!
20    
21    checkpoint61q
22    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
23     - the boundary conditions along open boundaries are unclear, because the
24       associated masks are set to zero and are thus treated as closed when
25       applying the slip-boundary conditions.
26     - move initialisation of grid variables from seaice_init_varia to _fixed
27    o adding doc/diags_changes.txt
28    o model/src:
29      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
30       to avoid "_diags" naming if no relation to pkg/diagnostics.
31      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
32       file and only call PLOT_FIELD_XYZ if debugMode=T.
33      remove few PLOT_FIELD_XY calls outside initialisation.
34      remove few unnecessary BARRIER.
35    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
36      of salt_plume package in Southern Ocean
37    o pkg/thsice:
38     - fix hOceMxL in overlap (needed for sea-ice advection);
39       update output of experiment global_ocean.cs32x15.icedyn.
40    o pkg/seaice:
41     - make the (placeholder-)tracer IceAge a little more meaningful
42      by avoiding ridging of age due to convergent ice flow
43     - add diagnostics for surface temperature, atmospheric and oceanic
44       heat flux, and atmospheric and oceanic ice growth
45    
46    checkpoint61p
47    o eesupp (global_max & global_sum):
48     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
49     - remove starting & endding barrier (no longer needed)
50    o pkg/mdsio, writelocal:
51       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
52       (remove the STOP): uses shared buffer IO to store data from all threads
53       and then let master-thread write nThreads tiles.
54    o pkg/mdsio (read/write field):
55     - tiled IO done in 1 piece (all levels at a time);
56     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
57     - multi-threaded: allow to read/write local (non-shared) array
58       (was already working with singleCpuIO ; now works also without);
59       => no longer needs barrier call after reading a file (added inside
60       mds_read/write field).
61     - move barrier calls outside gather/scatter_2d to mds_read/write_field
62    o pkg/obcs/exf
63      - exf_getffieldrec.F: add a few ". _d 0" and
64                            add code to catch the case fldperiod = 0.  
65      - obcs_precribe_read.F: change if statements so that they match
66                              the variable type (_RL)
67      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
68        exf_iprec) as part of namelist EXF_NML_01
69    o pkg/mdsio:
70      - read/write tiled (local) files: read/write 1-level tile chunk at a time
71        (instead of segment of length sNx); expected to speed up tiled IO.
72    o pkg/exch2:
73      - take buffer copy from/to array out of S/R exch2_send/recv into new
74        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
75        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
76      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
77      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
78        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
79        including Topology header file (and common blocks).
80      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
81        remove 2nd exch call in exch2_s3d_rx (no longer needed).
82      - document S/R arg. list (+ update some comments)
83    o pkg/seaice:
84      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
85        temperature and humidity over sea ice based on climatological values.
86      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
87        of LSR (this change is expected to change the results slightly because now
88        it uses slightly difference moduli from the second last LSR solution, but
89        that is more consistent with the stress computations; this part of the code
90        is not tested in the verification experiments)
91      - fix diagnostics for flux of ice in case of B-grid
92      - turn strain rates eij and press into global fields within global
93        common block in SEAICE.h for more straighforward diagnostics
94      - fix diagnostics for principal stress components, press, zeta, eta
95        to give something meaning full
96    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
97      new output (all 4 tests) using default rotationPeriod.
98    o pkg KPP:
99      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
100      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
101        and normal grid from 1 to Nr)
102    o Fix computations of L4rdt in mom_calc_visc.F
103    o eesupp:
104      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
105      should be called before a "stop" if we know that all process are going
106      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
107    
108    checkpoint61o
109    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
110    o model/src/ini_curvilinear_grid.F:
111       compute angleSin/CosC when they are not read from a file
112    o pkg/seaice:
113       add pseudo time stepping for LSOR
114    o pkg/exch2:
115       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
116    o pkg/seaice:
117       Adding separate sea ice albedo, drag coefficients, and HO in Southern
118       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
119    o SingleCpuIO:
120       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
121    o pkg/seaice:
122       put exchanged variable in (local) common block for MPI+Multi-Threads
123       to work (necessary with exch1, and for now with exch2 too).
124    o verification: to get more experiments tested with mpi, mth and mpi+mth,
125      change tiling of:
126       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
127       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
128      update output of exp:
129       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
130       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
131      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
132                       (note: output.txt generated on faulks using only 1 tile)
133    o eesupp & mdsio (SingleCpuIO):
134     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
135       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
136       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
137     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
138     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
139       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
140    o pkg/exch2:
141     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
142       read parameter file "data.exch2" if it exists; otherwise try default regular
143       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
144     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
145       with new code (not to be used, just as a backup solution).
146     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
147       in utils/exch2/input.
148    
149    checkpoint61n
150    o eesupp & mdsio (SingleCpuIO):
151      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
152        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
153        receive real*4 array (instead of real*8) to read/write 32.bit files.
154        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
155         and remove new mapping S/R)
156    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
157      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
158        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
159        when using exch2. Add S/R to map global io-buffer to global model array.
160      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
161    
162    checkpoint61m
163    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
164      and add 3 other S/R for other types (R4,R8,RS).
165      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
166    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
167     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
168     - reduce number of macro definitions (keep only those which are used);
169       can always call directly the corrresponding S/R if needed.
170     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
171       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
172     Fixed wrong type of arg in:
173       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
174       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
175     To fix: global_sum of var in common block is wrong (multi-threaded) in:
176       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
177     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
178    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
179      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
180    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
181    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
182      edges are closed (zero depth); might happen with "blank tiles";
183      for now, disabled if using OBCS.
184    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
185      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
186    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
187      to reduce length of 1.D array print in STDOUT.
188    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
189      + use 48 tiles (16x8): this will allow to test "blank tiles".
190    o start to test MPI + multi-threaded (change testreport to skip tests
191      where number of tiles do not match).
192    o genmake2: add option "-omp" to turn on Open-MP ;
193      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
194    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
195      and keep the original tile numbering. Note: compatible with old
196      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
197    
198    checkpoint61l
199    o Overlaps had been forgotten in calculating ijk keys : fixed
200    o fix cyrus makedepend for gcc 4.4
201    o experiment fizhi-cs-aqualev20:
202      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
203      and generate new output. Note: new output is much closer to the old
204      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
205      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
206    o pkg/fizhi:
207     - change to avoid indices going deliberately over array-bounds
208     - remove unnecessary MPI stuff
209     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
210     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
211       does not go over array-bounds and therefore returns reliable output.
212     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
213       this S/R has 4 output arguments, which are used inside "get_alarm";
214       when it is called with the same variable "ndum" in place of several
215       output arguments, this produces weird side effect inside "get_alarm"
216      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
217       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
218       address) and produces error.
219    o tools/gemake2: (March 27-29 2009)
220      with option "-mpi": link *_mpi files from "MODS" dir (this is what
221      testreport does).
222    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
223    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
224       update lab_sea.lsr & lab_sea.salt_plume results
225    o pkg/seaice:
226      Major overhaul of the LSOR solver: change discretization from original
227      finite differences to finite volume. The old routine is still in the
228      file seaice_lsr.F and can be turned on with the CPP-flag
229      SEAICE_OLD_AND_BAD_DISCRETIZATION
230      Along with this change, the discretization of the strain rates is changed.
231      The same flag turns on the old discretization in seaice_calc_strainrates.F
232      All verification experiments with seaice are affected (except for
233      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
234      results by setting the above flag.
235      Further changes involve changes in defaults:
236      - ALLOW_FLOODING is defined and turned on by default
237      - SEAICEadvSnow = .true. is now the default
238      - SEAICEadvSalt = .true. is now the default
239      - SEAICEadvAge  = .true. is now the default
240      - SEAICE_clipVelocities  = .false. is now the default
241                                         (as per J. Zhang's recommendation)
242      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
243        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
244      - seaice_growth: replace computation of UG by a simple copy from wspeed
245    
246    checkpoint61k
247    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
248      seaice_lsr: fixed a few metric terms,
249                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
250                  add more debugging diagnostics
251      seaice_evp: removed superfluous many metric terms of FV discretization
252                  of stress divergence
253                  affects lab_sea, lab_sea.hb87
254      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
255                  of stress divergence for non-evp solver
256                  (this part is not tested anywhere)
257      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
258                  they were effectively only half slip
259                  affects lab_sea.hb87
260      updated all relevant verification experiments (except lab_sea//output_adm.txt
261        which was left over, but fails at level 7 & 6)
262    
263    checkpoint61j
264    o pkg/seaice: turn a few hard wired parameters into run time parameters
265    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
266      time in seconds as promised by the usints in seaice_monitor and exf_monitor
267    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
268      that are not cubed-sphere grids
269    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
270    o pkg/ctrl:
271      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
272    o non-hydrostatic (calc_gw.F):
273      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
274      update output of exp. global_ocean.cs32x15.viscA4
275    o remove backward compatibility for thetaMin,phiMin
276      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
277    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
278      interpolated wind field not only for curvilineargrid=.true., but also
279      for a rotated grid (rotateGrid=.true.)
280    o pkg/exf: add capability to bypass interpolation for runoff
281      by setting yet another CPP-flag
282    o eesupp/src, B-grid exchange:
283      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
284    o autodiff
285      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
286      allows to switch to single-prec common blocks;
287      corresponding switch occurs in tamc.h, integer isbyte
288      TAF store directivs "byte" and "kind" seem equivalent;
289      Most tamc.h have been updated correspondingly.
290    
291    checkpoint61i
292    o autodiff:
293      fix autodiff_sore/_restore indices for obcs
294      (spotted by I. Hoteit, M. Mazloff)
295    o pkg/autodiff, pkg/ctrl:
296      Add flag to reduce all tapelev I/O to single-prec.
297      In data.ctrl set
298        doSinglePrecTapelev = .TRUE.
299    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
300      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
301    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
302      real fresh water flux (not yet)
303    o pkg/mdsio & rw:
304     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
305     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
306    o pkg/flt:
307     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
308       init_fixed & ini_varia.
309     - clean-up & simplify linear interpolation S/R:
310       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
311     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
312     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
313     - add vert. coordinate & horiz. indices to output files.
314     - change vertical position in initial condition, from index to depth [m].
315     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
316       (easier to get to a curvilinear grid) ; delX,delY no longer used.
317    o pkg/ggl90: a few modifications:
318     - fix bottom boundary condition, and interpolation of KappaE
319       near top and bottom
320     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
321     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
322     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
323    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
324      (maintain temporary backward compatibility, until next checkpoint)
325    
326    checkpoint61h
327    o pkg/diagnostics with "periodic averaging diagnostics":
328      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
329    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
330    o pkg/obcs: fix loop ranges for balancing code
331    o pkg/flt:
332     - improve criteria for finding which tile owns a float.
333     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
334    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
335      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
336      with ocean biogeo)
337    o pkg/flt:
338     - do some cleaning and fix the restart ;
339     - add output.txt in flt_example/results to get this pkg tested.
340    o genmake2: add an EXTENDED_SRC option and flag.
341       for now, cannot be turned on on command line (only through genmake_local)
342    o pkg/mdsio: read/write vector:
343     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
344     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
345       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
346     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
347      (drop to 4 digits matching for grad). But this test does not look very
348      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
349    
350    checkpoint61g
351    o pkg/flt:
352      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
353       + make OPTIONS file more standard.
354      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
355      - fix _BYTESWAPIO CPP-Flag
356      - standard reading of file-parameter "data.flt"
357      - fix argument list of S/R FLT_RESTART
358      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
359    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
360    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
361      a still unfixed compiler/optimization bug
362    
363    checkpoint61f
364    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
365      update results of global_ocean.cs32x15.icedyn test.
366    o move getcon.F from model/src to pkg/fizhi.
367    o pkg/exf: add parameter for extrapolation of temp up to the surface
368       and option to prevent negative evap (in bulk_largeyeager04 only).
369    o Prather Advection scheme: fix tracer conservation for divergent flow
370      (e.g., when using NonLin Free-Surface).
371    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
372    o gmredi (Visbeck-variable-K):
373     - add more parameters to Visbeck-variable-K.
374     - use a 5 points average for dSigmaR in Visbeck-K calculation
375       (more "homogenous": same stencil and same weights as in dSigmaH)
376     - update output of ideal_2D_oce experiment.
377    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
378      (#undef REAL4_IS_SLOW)
379     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
380       coordinate variable
381     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
382       (surface forcing fields), removes some of the functionality
383     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
384     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
385       probably not all: copy _RS surface flux fields to RL field before
386       calling DIAGNOSTICS_FILL
387     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
388       real*4 (CALL EXCH_*_RS) versions.
389     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
390       (generate new output).
391    
392    checkpoint61e
393    o gmredi (Visbeck-variable-K):
394      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
395      - change computation of Visbeck-K where Slope > Smax :        
396        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
397        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
398    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
399      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
400    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
401    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
402      does not become too large (to avoid precision problems in implicit-diffusion
403      solver); update ideal_2D_oce output.
404    o pkg ggl90:
405      - in ggl90_cal.F: compute only one set of visc/diff, used to
406        step forward TKE/T/S/momentum
407      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
408        have Prandlt =1)
409    o gmredi (fm07):
410      - add lower limit on Transition layer thickness + lower limit on 1/lambda
411      - allow to set few more params from data.gmredi
412    o pkg ggl90:
413          - add missing sqrt(2) factor in computation of mixing length
414            scale in ggl90_calc.F
415            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
416    
417    checkpoint61d
418    o adjoint modifs
419      - adapt to new field rhoInSitu
420      - allow to revert from StoreDynVars2D, StoreDynVars3D
421        to individual fields
422        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
423    o store 3-D (in-situ) density in commom block (DYNVARS.h)
424     - save 1 rho computation.
425     - no longer modify T & S inland when using down_slope pkg.
426    o gad_som : allow to switch to SOM advection for T & S without corresponding
427      pickup files (using new S/R: MDS_CHECK4FILE).
428    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
429      (for useSingleCpuIO to work in multi-threaded)
430    o pkg/shelfice:
431     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
432       with SHELFICEtopoFile in data.shelfice
433     - move code for reading ice shelf topography and modifying hFacC into separate
434       subroutines of the shelfice package
435     - separate initialisation of "fixed" and "variable" variables
436     - kTopC is not (yet) replaced by kSurfC, although this is possible
437    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
438    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
439      and rename:
440      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
441      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
442    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
443    
444    checkpoint61c
445    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
446      to add mass source/sink of fluid in the interior (3-D generalisation
447      of oceanic real-fresh water flux).
448    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
449    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
450    o new pkg: down_slope
451      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
452      - presently, modify T & S inland (dwnslp_calc_rho.F).
453        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
454      - implementation for ocean in P-coords not tested.
455      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
456    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
457      (to facilitate conversion of oceanic pkg to p-coordinate).
458    o change FIND_RHO to FIND_RHO_2D :
459      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
460    o new pkg: cheapaml
461    
462    checkpoint61b
463    o exch2:
464      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
465      - no longer depend on the order sequence (N,S,E,W).
466      - 3rd exchange no longer needed (tested with 24 tiles).
467      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
468      - exch_UV_A-grid readily available (but not yet tested).
469      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
470      (both are no longer needed) in exch_uv: no effect in forward run; but
471       get truncation error differences with adjoint exch.
472    o exch2:
473     - change index-bounds storage (moved from target to local tile,
474       more intuitive this way) ; rename/remove some variables.
475     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
476    
477    checkpoint61a
478    o exch2/matlab-topology-generator:
479      fix bug in index bounds for N-S internal exchange (hard to tell if this
480      had any effect on the solution).
481    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
482      is exceeded
483    o testreport: modify syntax of awk, so that it works also with
484      awk, and not only with nawk and gawk
485    
486    checkpoint61
487    o autodiff
488      Change default for TAF usage by removing argument '-nonew_arg'
489      This changes TAF subroutine argument list (ordering of active var.)
490      Omission of this flag leads to incompatibility w.r.t. TAMC
491      To restore TAMC-compatibility, need following modifs:
492      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
493      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
494      Tested TAF version is 1.9.22
495      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
496    
497    checkpoint60
498    --->>> This is the last checkpoint for which generating the adjoint
499    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
500    --->>> by default.
501    --->>> Future checkpoints will ommit this flag by default.
502    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
503    o pkg/grdchk: Add gradient check to etan0 perturbations.
504    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
505    o pkg/autodiff: more flexibility in zeroadj.
506      model/src: modifying do_oceanic_phys.F accordingly.
507    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
508    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
509      special setup of gmredi for which the adjoint is stable
510      enough for parameter optimization.
511    o bridging the gap between eddy stress and GM.
512      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
513          along with a change in CPP option (now ALLOW_EDDYPSI).
514      -> when using GM w/ GM_AdvForm:
515          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
516          is applied either in the tracer Eq. or in momentum Eq.
517          depending on data.gmredi (intro. GM_InMomAsStress).
518      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
519      The key modifications are in model/src/taueddy_external_forcing.F
520      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
521    
522    checkpoint59r
523    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
524      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
525      fix option to read coriolis(@ cell-corner) from files with CS-grid.
526    o pkg/mnc: add some attributes to standard 1D-coordinate variables
527    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
528      mass points, when using mnc for output
529      - add runtime parameter (missing_value, missing_value_int) to override
530        default (which is the value of getcon('UNDEF'))
531    o pkg/mnc: prepare mnc for the actual use of missing values with the
532      diagnostics package: small fix in mnc_cw_readwrite.template and more
533      initialisation of never used fields
534      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
535      versions
536    o pkg/thsice/thsice_ini_vars.F added default initial values so that
537      thermodynamics sea ice solver does not blow up when some initial fields
538      are missing.
539    o move from external_forcing_surf.F to ini_forcing.F
540      the p-coord. hack consisting in using pLoad to set phi0surf ;
541      update output of tutorial_global_oce_in_p (affected @ truncation level).
542    o Freshen up a bit hs94.1x64x5, notably:
543      remove rotationPeriod and tRef=5*0. (adjoint only), and add
544      exactConserv=.TRUE.
545    o pkg/generic_advdiff:
546      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
547      applies to files where Temperature & Salinity 2nd Order moments are used.
548    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
549      this uses a dynamically allocated internal state data structure
550      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
551      and requires a fortran 90 compiler
552    
553    checkpoint59q
554    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
555       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
556    o Refresh tutorial_global_oce_biogeo, notably:
557      - change bathymetry (put back seamounts in ACC, use hFacs)
558      - change EOS (POLY3 --> JMD95Z)
559      - use Bryan-Lewis vertical diffusivity
560      - use multidimensional advection
561      - remove old virtual virtual in dic pkg, now done through ptracer pkg
562      - change a couple of parameters in dic pkg
563    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
564    o pkg/obcs: change default to OBCSfixTopo = .true.,
565      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
566      - replace "debugMode" with "debugLevel .GE. debLevB"
567    o implementation of TAF directives for gchem,cfc,dic
568    o remove "exp5" (replaced by tutorial_deep_convection).
569    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
570      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
571      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
572      --> changes results in exp4, seaice_obcs
573    o tutorial_deep_convection :
574      update the set-up and increase resolution and domain size ; start
575      from pseudo initial conditions = output at t=120mn in order to see
576      something happening when running testreport.
577    o pkg/seaice: add os7mp as an advection scheme
578                  add check for advection schemes
579                  add a flag for restoring T and S underneath sea ice
580    o pkg/my82: add netcdf-support and diagnostics
581    o thsice pkg:
582      - Now hsMax limits snow height by turning it into ice following
583        flooding scheme (and now conserving energy)
584      - Slight rewriting of the formula in thsice_calc_thick.F
585      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
586      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
587    
588    checkpoint59p
589    o gchem / dic / cfc :
590      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
591      - add new parameter files: "data.dic" & "data.cfc" ;
592      - various re-arrangement in initialisation & header file ;
593      - fix tutorial_global_oce_biogeo for multi-threaded test.
594    o pkg/dic: test for "pickup_dic" file when restarting ;
595      if no pickup-file, can restart with a re-initialised pH (same as it did
596      before) providing pickupStrictlyMatch is set to False.
597    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
598      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
599    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
600      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
601    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
602     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
603       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
604    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
605       scheme to use for vorticty-term ;
606     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
607       (with default selectVortScheme, return to original discretisation)
608     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
609    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
610    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
611      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
612      also fix diagnostics VISCAHW & VISCA4W.
613    
614    checkpoint59o
615    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
616    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
617      move a few statemens out the main loop into separate loops
618    o pkg/shelfice:
619      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
620        (kg/m^2/s), does not break tests, because in verification/isomip,
621        rhoConstFresh=rhoConst (by accident)
622      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
623      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
624        new file model/src/seawater.F, so that they are available for all pkgs.
625      - convert potential temperature into in-situ temperature. This changes the
626        isomip tests => update tests
627    o add a flag writePickupAtEnd (default=true) to be able to suppress
628      writing a pickup at the last timestep
629    o tools/mpack-1.6 :
630      - disable automake (not working) and autoconf (not needed).
631      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
632        also cleaner with much less compilation warnings.
633    o pkg/profiles:
634      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
635      (for "less than 32 characters name" compiler requirement)
636    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
637      conditions that have a different sampling frequency than S/T/U/V obcs
638    o pkg/diagnostics (stats-diags):
639      - fix global Min/Max in case 1 processor get only empty tiles
640    o genmake2: replace (4 times)
641         make genmake_tc_1.o >> genmake_warnings 2>&1
642      with
643         COMM="$CC $CFLAGS -c genmake_tc_1.c"
644         echo $COMM >> genmake_warnings
645         $COMM >> genmake_warnings 2>&1
646      to make genmake2 always see the value of CC as specified in the optfile.
647    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
648      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
649      - modify verification advect_cs test to test SOM-advection on CS-grid.
650    o pkg/ctrl:
651      - Rewrite of ctrl_map_ini_ecco.F,
652        introducing a generic routine (ctrl_map_ini_gen.F).
653      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
654    
655    checkpoint59n
656    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
657      number in dedicate array "hdiag":
658      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
659        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
660      - many small changes (integer format) for large number of diagnostics
661      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
662        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
663    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
664      usingSphericalGrid, this allows to define the rotated grid coordinates
665      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
666      geographical coordinates according to the inverse of the rotation defined
667      by the Euler angles, so that Coriolis parameter and online-interpolation by
668      exf works with the geographical coordinates on XC/YC/XG/YG.
669      Naturally, this feature does not work with all packages, so some
670      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
671      profiles), because there the coordinates are assumed to be regular
672      spherical grid coordinates.
673    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
674      - introduce isopycnal diffusion coefficient control.
675    o tools/adjoint_options:
676      - additional control vector components.
677    o pkg/mnc: have mnc create marginally meaning full coordinate variables
678      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
679    o pkg/mypackage:
680      - add example of read/write pickup for state-var ;
681      - add entry points to the main code for state-vars diags & write-pickup.
682    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
683      transitions for useExfYearlyFields
684      - add new subroutine that determines the file to read from for
685        use*YearlyFields = .TRUE. and .FALSE.
686      - add a verification experiment to global_with_exf that tests
687        useExfYearlyFields with USE_EXF_INTERPOLATION defined
688    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
689      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
690      subroutines (which could be generated from a template, because they are
691      almost identical), for now they are included in obcs_prescribe_read.F for
692      simplicity
693    o pkg/exf:
694      - add a little more diagnostic to exf_interp_read (in analogy to
695        mds_read_field, can be turned off with debugLevel < debugLevA=1)
696      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
697        ugly but fast by unrolling short inner loops, inserting a unroll=8
698        directive in routine lagran, and splitting a loop and making do while the
699        outermost loop (the latter requires the intoduction of index arrays)
700    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
701    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
702      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
703    o verification/seaice_obcs: updated for restart test and latest options
704    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
705      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
706      for now this is only available for the C-grid code and also within
707      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
708    
709    checkpoint59m
710    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
711      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
712    o gad_som : fix flux output (& diagnostics) to have same units as other  
713      advection scheme fluxes (was previously multiplied by deltaT).  
714    o added verification/seaice_obcs both to test seaice open boundaries
715      and to provide an example matlab scrpt for generating them
716    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
717    o pkg/salt_plume: clean up salt_plume_frac.F to
718      remove redundancy in PlumeMethod 1 and 4
719    o pkg/kpp: added saltplume diagnostics
720    o pkg/obcs and pkg/seaice:
721      - do not set uice and vice to zero when OB*icefile are unspecified
722      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
723      - moved seaice tracer obcs after call to seaice_growth
724    o pkg/salt_plume: added various options for salt plume depth
725      criterion and for vertical distribution of the salt
726    
727    checkpoint59l
728    o pkg/ptracers: new version of ptracers pickup:
729      read meta file and write only fields which are needed to restart.
730      ( same logic as main pickup file ; also using pickupStrictlyMatch )
731    o pkg/seaice:
732      - add timescale for melting due to warm mixed layer as a means of
733        setting SEAICE_availHeatFrac more conveniently
734      - add a CPP-flag/runtime parameter check for flooding algorithm
735      - reformulated availHeat in seaice_growth.F to be independent of AREA
736    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
737      unit changes
738    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
739    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
740      SX vector computer.
741    o pkg/seaice:
742      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
743        seaice forcing fields can now be read only through pkg/exf
744      - removed some unused halos
745    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
746    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
747      or U/VICE from U/VWIND before computing U/VSTRESS
748    
749    checkpoint59k
750    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
751      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
752    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
753      all experiments pass when compile with un-initialised var. checking option.
754    o added pkg/salt_plume
755    o script to test restart (for now, in MITgcm_contrib/jmc_script)
756    o pkg/seaice: new read/write pickup version.
757      read meta file and write only fields which are needed to restart.
758      ( same logic as main pickup file ; also using pickupStrictlyMatch )
759    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
760    o lab_sea.hb87: modify the domain & update output.hb87.txt :
761      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
762      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
763      process. Fixed here by closing the domain at the Northern boundary.
764    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
765    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
766      a set of consecutive levels in/from a 3-D array.
767    o pkg/ptracers:
768      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
769      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
770    
771    checkpoint59j
772    o in pkgs: dic, obcs, offline, rbcs:
773      standard way to compute coeff. for time interpolation between 2 time reccords
774      which retains full precision (& make results less dependent on compiler).
775      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
776    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
777      packages instead of reading ice cover and wind speed separately
778    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
779     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
780      to allow to compile customized code before the update)
781    o cleaning-up:
782      - fix CPP instruction syntax in pkg/obcs
783      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
784        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
785      - fix some threads issue in IO parts.
786    o pkg/dic:
787      - add tons of "_d 0" (--> much better testreports !)
788       and then update outputs of tutorial_global_oce_biogeo
789    o pkg/mom_fluxform:
790      add a special version of momentum advection intended to conserve momentum
791      next to a bathymetry step or a coastline edge. (default = off = #undef)
792    o new read/write pickup version:
793      - for now, only implemented for main (mdsio) pickup file.
794      - write out only what is needed to restart; merge pickup_nh , pickup_ph
795        and main pickup together.
796      - read meta file; read only what is needed to restart; stop if a field
797        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
798        if it make sense (even if the restart is not perfect).
799      - if no meta file, assume that pickup to read corresponds exactly to
800        a pickup that would currently be written.
801      - read pickup written in the old format (until checkpoint59i) if it
802        recognizes an old meta file (no field-list).
803      - add a meta file in exp. which starts from a pickup: 2 cases:
804        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
805         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
806        b) a meta file describing the content of the associated pickup file
807         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
808    o pkg/mdsio & pkg/rw:
809      - new routine to read a meta file ; new set of routine to read
810        Multiple-fields file (with meta file).
811    o added open boundary conditions capability for seaice
812        HSNOW, HSALT, UICE, and VICE
813    
814    checkpoint59i
815    o adjoint:
816      * fix multiDimAdvection adjoint
817        (partial recomputation problem by TAF for fVerT(:,:,kDown)
818        and comlev1 size definition (maxpass vs. max. number of tracers)
819      * verification/global_ocean.90x45x15 adjoint now tests
820        NLFS and multiDimAdvection using DST3 (=30)
821      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
822    o pkg/kpp: add "_d 0" to real constant (if missing);
823      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
824      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
825    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
826      for internal parameters related to restart process (formerly from PARAMS.h)
827      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
828    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
829      as argument. (only atm2d & obcs write_pickup have not yet been updated)
830    o pkg/monitor:
831      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
832      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
833      - account for deep Atmosphere factor and density factor (anelastic)
834    o added open boundary conditions capability for seaice HEFF and AREA
835    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
836      thermodynamics
837      - requires a little reorganization, which affects the testreport results
838        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
839        so that now the conservative form is tested
840      - add a few comments
841    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
842    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
843    o add new diagnostics to seaice: advective, diffusive fluxes (only for
844      multidim-advection, for scheme 2 they are not filled) and transports,
845      thermodynamic growth rates
846    o change units of EmPmR (inside the code, + within coupling interface)
847      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
848      Affects results @ truncation level (cg2d match) and update output of
849       experiments: lab_sea(6), global_ocean.90x40x15(10),
850      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
851      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
852      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
853      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
854    
855    checkpoint59h
856    o pkg/exf:
857      - improve vectorization by moving if-statement out of loops in
858        exf_mapfields, exf_radiation
859      - exf_bulkformulae.F: introduce 2D fields and vectorize code
860    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
861    o testreport:
862      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
863        monitor & update offline_exf_seaice exp. output.
864      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
865    o pkg/seaice:
866      - bug fix in the evp solver: boundary conditions were affected be
867        masking of zMax/zMin (changes results)
868      - minor bug fix in boundary conditions in seaice_calc_strainrates
869        (changes results for no_slip)
870      - seaice_lsr.F: make interpolation of eta dependent on boundaries
871      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
872      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
873        stress formulation and no-slip boundary conditions
874    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
875      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
876    o pkg/seaice: a first HSALT time stepping equation has been checked in
877    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
878      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
879      without requiring DO-IF statements
880    o pkg/thsice:
881      use continuous power-law function for partition of energy between lateral
882      melting/freezing and thinning/thickening ; old code using step function
883      still available with #undef THSICE_FRACEN_POWERLAW
884      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
885    o testreport: change AD testing : check against results/output_adm.txt
886      using same scripts as for forward test.
887    
888    checkpoint59g
889    o adjoint testing: in preparation for changing testreport:
890      - output format: cost and grad written on separated lines
891      - ad output results in directory "results" (instead of "results_ad")
892    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
893    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
894    o pkg/ecco: allow user defined cost function contributions
895    o testreport:
896      Allow to choose (per experiment) the list of tested output variables
897       and the main variable (used to issue a pass/FAIL ) ;
898      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
899      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
900      Also modify printing of summary:
901       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
902       b) echo the list of tested variables in the individual summary.txt of
903          each experiment.
904    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
905      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
906      (but still depend on the tile decompostion of the domain).
907    o pkg/seaice: change a discretization detail to make the B-grid code
908      "more symmetric". This change is likely to remove all "ridges/leads" that
909      where quasi-aligned with the grid in B-grid solutions. It may also be
910      the solution to the stress coupling issues with the B-grid.
911    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
912      remove .cvsignore from input dir. (since testreport no longer run here).
913    o pkg/thsice:
914     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
915     - fix reshaping of sea-ice just after advection:
916       melt all the ice only if ice-volume is too small.
917     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
918       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
919     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
920    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
921      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
922    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
923      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
924      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
925      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
926      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
927      -> update output.txt
928    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
929     this affects truncation error: -> update output.txt of exp:
930      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
931      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
932    
933    checkpoint59f
934    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
935    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
936      a bounded range (in forward mode)
937    o pkg/ecco, ctrl, autodiff and mom_common:
938     internal parameter controls, completements of implementations
939    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
940    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
941      (not seem any difference in testing results).
942    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
943       at face corners.
944    o pkg/generic_advdiff:
945     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
946      loop range indices for computing vertical advection tendency
947      and do the calculation in the interior only (no overlap) ;
948      for now, only implemented for SOM advection (to save CPU time).
949     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
950    o exch2 adjoint
951      First set of changes:
952      - add exch2 hand-written adjoint templates
953      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
954        This will require cleanup in pkg/autodiff/*.F
955        (changed routines currently kept separate in verif. code/)
956      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
957        that used to hide exch2 or cubed-sphere specific code
958        (commented via 'cph-exch2')
959    o pkg/seaice
960      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
961    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
962       output of global_ocean.cs32x15.thsice .
963    
964    checkpoint59e
965    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
966      for B-grid vector (not yet tested) and C-grid vector (<- only used
967      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
968    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
969      (#ifdef ALLOW_SALT_PLUME)
970    o gather_2d/scatter_2d: removed halo regions
971    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
972      scheme and the corresponding test case (under front_relax dir). For now,
973      only available with Skew-flux form and not yet tested in realistic set-up.
974      adjoint: store directives updated, but gradient checks deteriorated,
975      so maybe GM/Redi adjoint is now broken.
976    o seaice adjoint
977      * add AREA, HEFF, HSNOW as control variable
978        (should not change lab_sea results)
979      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
980    o pkg/seaice:
981      * added computation of saltFlux in seaice_growth;
982        For time being, sea ice salinity is assumed constant
983        contribution of snow flooding to freshening of sea ice is neglected.
984        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
985        defaults to 0.0 in order to maintain backward compatibility.
986        Typical values for SEAICE_salinity are 4 to 10 g/kg.
987      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
988      * added SEAICE_availHeatFrac, which specifies fraction of surface level
989        heat content used to melt or grow ice
990      * commented out cap of HICE: it helps keep ice thinner
991      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
992      * applied OBCS T/S mask to HEFFM sea ice mask
993    
994    checkpoint59d
995    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
996     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
997     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
998    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
999     and change default value of parameter "GM_Small_Number";
1000     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1001       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1002       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1003    o pkg/ecco: cost function when applying pkg/smooth to controls
1004    o pkg/ctrl: add forcingPrecond run time parameter
1005    o pkg/seaice:
1006     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1007     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1008       changes verification/lab_sea
1009     - rearrange implicit part of u-equation in LSR solver to make it easier to
1010       read, understand, and debug. This causes changes at the truncation level.
1011     - fix (serious) bug in the boundary conditions (sign error in the implicit
1012       part) of the LSR solver. Changes all LSR results.
1013     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1014       is initilized with small values - does not change lab_sea results.
1015     - added HsnowFile initialization capability
1016    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1017     initialization of pkg/smooth and application to control vector
1018    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1019    o dependencies: pkg/profiles requires pkg/cal
1020    o pkg/profiles:
1021     - added option ALLOW_PROFILES_GENERICGRID
1022         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1023         that interpolation information (grid points and coefficients) is provided
1024         within the netcdf input files.
1025         -> sample matlab scripts can be found in MITgcm_contrib/gael
1026         that allow you to prepare netcdf input files.
1027     - also modified: cleaner include statements, cleaner error print statements,
1028       cleaner stops when error, and more tests of the netcdf input files consistency.
1029    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1030    o pkg/seaice:
1031     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1032       requires a new routine: seaice_diagnostics_fill.F
1033     - make sure that seaice does not move if not forced (pressure replacement
1034       method, Hibler and Ip, 1995), changes results
1035     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1036     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1037       It is turned off by default (=-1.), because it changes the results.
1038     - make it possible to read AREA from a file, too.
1039    
1040    checkpoint59c
1041    o add S/R and diagnostics for oceanic mixed-layer depth
1042    o move GMRedi call after all vertical mixing schemes (including KPP)
1043    o pkg/thsice:
1044     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1045      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1046    o pkg/obcs:
1047     - bug fix for balance code
1048    o pkg/seaice:
1049      - allow values of SEAICE_elasticParm > 1
1050      - add new parameter SEAICE_evpTauRelax as an alternative
1051        to SEAICE_elasticParm
1052      - make lsr boundary conditions free slip (by default), changes result
1053      - add code for no slip boundary conditions for lsr
1054      - set minimum of zeta to zero (and not 4e8) (changes results)
1055      - add a cap on AREA after advecting AREA if seaice_growth is not called
1056    o change calculation of Visbeck K:
1057      - no longer depend on tapering scheme; instead, compute slope (limited
1058        by GM_maxSlope). this is equivalent to what was comuted before with
1059        clipping or linear tappering.
1060      - fix vertical averaging (wrong by 1/2 level)
1061      - leave the old version (but will not be maintained) within
1062        #ifdef OLD_VISBECK_CALC / #endif
1063      - update output of exp. ideal_2D_oce
1064    o change error catch in calc_r_star to improve vectorization
1065    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1066      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1067    o adjoint:
1068      Re-organized adjoint checkpointing according to Matt Mazloff
1069      (but with modifs/completions/cleanups)
1070      Storing is now bundled into large arrays to optimized I/O
1071      (and second step in cleanup of the_main_loop)
1072    
1073    checkpoint59b
1074    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1075      - export/import (between ocean & coupler) fields needed for ocean DIC.
1076    o pkg/seaice:
1077      - get rid of three more exchanges seaice_calc_viscosities (required
1078        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1079      - bug fix in seaice_ocean_stress (update of lab_sea required)
1080      - reduce loop boundaries to necessary minimum also in seaice_evp
1081      - go back to the old way of computing deltaC/Z as the adjoint likes that
1082        better
1083    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1084      passive tracer to an Age Tracer) + update output.txt
1085    o pkg/exf:
1086      - implement A-grid / C-grid selection for wind-stress input files.
1087      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1088      for now, in exf_bulk_largeyeager04.F only :
1089      - change implementation for case where windspeed + 2. components wind-stress
1090        are read-in. AND use rhoConstFresh to convert evap.
1091    o pkg/seaice:
1092      - use correct EXCH_UV for wind-forcing (on A-grid).
1093      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1094        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1095    o pkg/exf:
1096      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1097      EXF_INTERPOLATION:
1098      - merge global_with_exf/code version of exf_interp_read.F
1099        to the main code ;
1100      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1101        reading the file ; Important: This options needs to be defined to recover
1102        previous code.
1103        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1104      - no longer loose real*8 precision along the way when using exf_iprec=64.
1105    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1106      - change discretisation of evp-solver in order to avoid another exchange
1107        (changes lab_sea) and clean up a little
1108      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1109        help the adjoint (this also changes the results slightly)
1110      - add a few "_d 0" where they had been missing in seaice_evp.F
1111      - cleaning up: remove unused seaice_calc_rhs.F
1112    o pkg/exf: some cleaning-up:
1113      - change various "constants" into runtime parameters
1114      - cleaned-up Large&Yeager04 routine which should eventually
1115        replace exf_bulkformulae.F (changed names of S/R and CPP)
1116        and merged various ALLOW_ATM_WIND options
1117     only used with thsice pkg (in thsice_get_exf.F):
1118      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1119        which are used when useStabilityFct_overIce=TRUE (= the default)
1120      - change default values of ice & snow emissivity and scale downward LW
1121        by ice & snow emissivity.
1122    o pkg/thsice:
1123     fix few little problems, in thsice_calc_thickn.F:
1124      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1125      - melt only laterally if hIce < hThinIce (as the comments say)
1126      and in thsice_extend.F:
1127      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1128      - start to form ice as soon as the minimum ice-volume is reachable.
1129     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1130      and cpl_aim+ocn
1131  o pkg/kpp  o pkg/kpp
  - remove wrong (within bi,bj loops) EXCH calls.  
  - little cleaning (add argument myThid in last position, cvs header ...)  
1132   - move computation of surface related input fields to KPP into a new   - move computation of surface related input fields to KPP into a new
1133     subroutine kpp_forcing_surf.F     subroutine kpp_forcing_surf.F
1134     - remove wrong (within bi,bj loops) EXCH calls.
1135     - little cleaning (add argument myThid in last position, cvs header ...)
1136     - for now, fix conservation problem by exchanging KPPviscAz (may not
1137       be the best fix)
1138  o pkg/seaice  o pkg/seaice
1139   - check for inconsistent evp parameter/cpp-flag combination   - check for inconsistent evp parameter/cpp-flag combination
1140   - remove leftover errIO flat for obsolete name list error handling   - remove leftover errIO flat for obsolete name list error handling
1141    o OpenAD
1142     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1143    
1144  checkpoint59a  checkpoint59a
1145  o pkg/seaice: some parameter clarifications and a little bit of clean up  o pkg/seaice: some parameter clarifications and a little bit of clean up
# Line 31  o in FFIELDS.h: Line 1159  o in FFIELDS.h:
1159       ATMOSPHERIC_LOADING is #define).       ATMOSPHERIC_LOADING is #define).
1160  o pkg/kpp: replaced _KPP_RL with _RL  o pkg/kpp: replaced _KPP_RL with _RL
1161  o bug fixes for vertical diffusivity computations when both KPP and  o bug fixes for vertical diffusivity computations when both KPP and
1162      3D diffusivity arrays are used.      3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1163        are no longer updating the vertical diffusivity array
1164        (passed as argument) but are (re-) setting those arrays.
1165  o pkg/seaice: fix bug in evp solver, while doing that  o pkg/seaice: fix bug in evp solver, while doing that
1166    - change (improve?) discretization of stress computations for both    - change (improve?) discretization of stress computations for both
1167      cgrid-lsr and evp solver      cgrid-lsr and evp solver
# Line 1513  o add two new packages Line 2643  o add two new packages
2643    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2644    - these scheme operate in a similar manner as KPP (without ghat, of    - these scheme operate in a similar manner as KPP (without ghat, of
2645      course), however there is only one diffusivity that is used for both      course), however there is only one diffusivity that is used for both
2646      temperature and salinity (and passive tracers)ç      temperature and salinity (and passive tracers)
2647  o add offline package  o add offline package
2648  o add "verification/dic_example" which contains a dic-gchem-ptracer setup  o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2649    provided by Stephanie Dutkiewicz    provided by Stephanie Dutkiewicz

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