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revision 1.673 by mlosch, Fri Jun 9 00:20:30 2006 UTC revision 1.1131 by heimbach, Wed Jun 24 20:28:21 2009 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice:
8     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
9      1. introduce fields for time step (N-1)
10      2. do not use levels 2 and 3 anymore (but keep them)
11      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
12         includes changes to pkg/thsice/thsice_get_velocity.F,
13         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
14         pkg/obcs/obcs_apply_uvice.F.
15     - completely remove code for leap-frog time stepping for second order
16       advection
17     - adjusted adjoint accordingly;
18       gradient checks have improved by an order of magnitude!
19    
20    checkpoint61q
21    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
22     - the boundary conditions along open boundaries are unclear, because the
23       associated masks are set to zero and are thus treated as closed when
24       applying the slip-boundary conditions.
25     - move initialisation of grid variables from seaice_init_varia to _fixed
26    o adding doc/diags_changes.txt
27    o model/src:
28      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
29       to avoid "_diags" naming if no relation to pkg/diagnostics.
30      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
31       file and only call PLOT_FIELD_XYZ if debugMode=T.
32      remove few PLOT_FIELD_XY calls outside initialisation.
33      remove few unnecessary BARRIER.
34    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
35      of salt_plume package in Southern Ocean
36    o pkg/thsice:
37     - fix hOceMxL in overlap (needed for sea-ice advection);
38       update output of experiment global_ocean.cs32x15.icedyn.
39    o pkg/seaice:
40     - make the (placeholder-)tracer IceAge a little more meaningful
41      by avoiding ridging of age due to convergent ice flow
42     - add diagnostics for surface temperature, atmospheric and oceanic
43       heat flux, and atmospheric and oceanic ice growth
44    
45    checkpoint61p
46    o eesupp (global_max & global_sum):
47     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
48     - remove starting & endding barrier (no longer needed)
49    o pkg/mdsio, writelocal:
50       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
51       (remove the STOP): uses shared buffer IO to store data from all threads
52       and then let master-thread write nThreads tiles.
53    o pkg/mdsio (read/write field):
54     - tiled IO done in 1 piece (all levels at a time);
55     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
56     - multi-threaded: allow to read/write local (non-shared) array
57       (was already working with singleCpuIO ; now works also without);
58       => no longer needs barrier call after reading a file (added inside
59       mds_read/write field).
60     - move barrier calls outside gather/scatter_2d to mds_read/write_field
61    o pkg/obcs/exf
62      - exf_getffieldrec.F: add a few ". _d 0" and
63                            add code to catch the case fldperiod = 0.  
64      - obcs_precribe_read.F: change if statements so that they match
65                              the variable type (_RL)
66      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
67        exf_iprec) as part of namelist EXF_NML_01
68    o pkg/mdsio:
69      - read/write tiled (local) files: read/write 1-level tile chunk at a time
70        (instead of segment of length sNx); expected to speed up tiled IO.
71    o pkg/exch2:
72      - take buffer copy from/to array out of S/R exch2_send/recv into new
73        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
74        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
75      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
76      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
77        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
78        including Topology header file (and common blocks).
79      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
80        remove 2nd exch call in exch2_s3d_rx (no longer needed).
81      - document S/R arg. list (+ update some comments)
82    o pkg/seaice:
83      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
84        temperature and humidity over sea ice based on climatological values.
85      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
86        of LSR (this change is expected to change the results slightly because now
87        it uses slightly difference moduli from the second last LSR solution, but
88        that is more consistent with the stress computations; this part of the code
89        is not tested in the verification experiments)
90      - fix diagnostics for flux of ice in case of B-grid
91      - turn strain rates eij and press into global fields within global
92        common block in SEAICE.h for more straighforward diagnostics
93      - fix diagnostics for principal stress components, press, zeta, eta
94        to give something meaning full
95    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
96      new output (all 4 tests) using default rotationPeriod.
97    o pkg KPP:
98      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
99      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
100        and normal grid from 1 to Nr)
101    o Fix computations of L4rdt in mom_calc_visc.F
102    o eesupp:
103      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
104      should be called before a "stop" if we know that all process are going
105      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
106    
107    checkpoint61o
108    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
109    o model/src/ini_curvilinear_grid.F:
110       compute angleSin/CosC when they are not read from a file
111    o pkg/seaice:
112       add pseudo time stepping for LSOR
113    o pkg/exch2:
114       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
115    o pkg/seaice:
116       Adding separate sea ice albedo, drag coefficients, and HO in Southern
117       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
118    o SingleCpuIO:
119       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
120    o pkg/seaice:
121       put exchanged variable in (local) common block for MPI+Multi-Threads
122       to work (necessary with exch1, and for now with exch2 too).
123    o verification: to get more experiments tested with mpi, mth and mpi+mth,
124      change tiling of:
125       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
126       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
127      update output of exp:
128       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
129       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
130      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
131                       (note: output.txt generated on faulks using only 1 tile)
132    o eesupp & mdsio (SingleCpuIO):
133     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
134       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
135       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
136     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
137     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
138       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
139    o pkg/exch2:
140     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
141       read parameter file "data.exch2" if it exists; otherwise try default regular
142       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
143     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
144       with new code (not to be used, just as a backup solution).
145     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
146       in utils/exch2/input.
147    
148    checkpoint61n
149    o eesupp & mdsio (SingleCpuIO):
150      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
151        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
152        receive real*4 array (instead of real*8) to read/write 32.bit files.
153        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
154         and remove new mapping S/R)
155    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
156      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
157        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
158        when using exch2. Add S/R to map global io-buffer to global model array.
159      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
160    
161    checkpoint61m
162    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
163      and add 3 other S/R for other types (R4,R8,RS).
164      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
165    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
166     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
167     - reduce number of macro definitions (keep only those which are used);
168       can always call directly the corrresponding S/R if needed.
169     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
170       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
171     Fixed wrong type of arg in:
172       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
173       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
174     To fix: global_sum of var in common block is wrong (multi-threaded) in:
175       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
176     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
177    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
178      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
179    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
180    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
181      edges are closed (zero depth); might happen with "blank tiles";
182      for now, disabled if using OBCS.
183    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
184      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
185    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
186      to reduce length of 1.D array print in STDOUT.
187    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
188      + use 48 tiles (16x8): this will allow to test "blank tiles".
189    o start to test MPI + multi-threaded (change testreport to skip tests
190      where number of tiles do not match).
191    o genmake2: add option "-omp" to turn on Open-MP ;
192      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
193    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
194      and keep the original tile numbering. Note: compatible with old
195      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
196    
197    checkpoint61l
198    o Overlaps had been forgotten in calculating ijk keys : fixed
199    o fix cyrus makedepend for gcc 4.4
200    o experiment fizhi-cs-aqualev20:
201      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
202      and generate new output. Note: new output is much closer to the old
203      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
204      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
205    o pkg/fizhi:
206     - change to avoid indices going deliberately over array-bounds
207     - remove unnecessary MPI stuff
208     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
209     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
210       does not go over array-bounds and therefore returns reliable output.
211     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
212       this S/R has 4 output arguments, which are used inside "get_alarm";
213       when it is called with the same variable "ndum" in place of several
214       output arguments, this produces weird side effect inside "get_alarm"
215      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
216       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
217       address) and produces error.
218    o tools/gemake2: (March 27-29 2009)
219      with option "-mpi": link *_mpi files from "MODS" dir (this is what
220      testreport does).
221    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
222    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
223       update lab_sea.lsr & lab_sea.salt_plume results
224    o pkg/seaice:
225      Major overhaul of the LSOR solver: change discretization from original
226      finite differences to finite volume. The old routine is still in the
227      file seaice_lsr.F and can be turned on with the CPP-flag
228      SEAICE_OLD_AND_BAD_DISCRETIZATION
229      Along with this change, the discretization of the strain rates is changed.
230      The same flag turns on the old discretization in seaice_calc_strainrates.F
231      All verification experiments with seaice are affected (except for
232      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
233      results by setting the above flag.
234      Further changes involve changes in defaults:
235      - ALLOW_FLOODING is defined and turned on by default
236      - SEAICEadvSnow = .true. is now the default
237      - SEAICEadvSalt = .true. is now the default
238      - SEAICEadvAge  = .true. is now the default
239      - SEAICE_clipVelocities  = .false. is now the default
240                                         (as per J. Zhang's recommendation)
241      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
242        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
243      - seaice_growth: replace computation of UG by a simple copy from wspeed
244    
245    checkpoint61k
246    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
247      seaice_lsr: fixed a few metric terms,
248                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
249                  add more debugging diagnostics
250      seaice_evp: removed superfluous many metric terms of FV discretization
251                  of stress divergence
252                  affects lab_sea, lab_sea.hb87
253      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
254                  of stress divergence for non-evp solver
255                  (this part is not tested anywhere)
256      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
257                  they were effectively only half slip
258                  affects lab_sea.hb87
259      updated all relevant verification experiments (except lab_sea//output_adm.txt
260        which was left over, but fails at level 7 & 6)
261    
262    checkpoint61j
263    o pkg/seaice: turn a few hard wired parameters into run time parameters
264    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
265      time in seconds as promised by the usints in seaice_monitor and exf_monitor
266    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
267      that are not cubed-sphere grids
268    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
269    o pkg/ctrl:
270      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
271    o non-hydrostatic (calc_gw.F):
272      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
273      update output of exp. global_ocean.cs32x15.viscA4
274    o remove backward compatibility for thetaMin,phiMin
275      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
276    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
277      interpolated wind field not only for curvilineargrid=.true., but also
278      for a rotated grid (rotateGrid=.true.)
279    o pkg/exf: add capability to bypass interpolation for runoff
280      by setting yet another CPP-flag
281    o eesupp/src, B-grid exchange:
282      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
283    o autodiff
284      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
285      allows to switch to single-prec common blocks;
286      corresponding switch occurs in tamc.h, integer isbyte
287      TAF store directivs "byte" and "kind" seem equivalent;
288      Most tamc.h have been updated correspondingly.
289    
290    checkpoint61i
291    o autodiff:
292      fix autodiff_sore/_restore indices for obcs
293      (spotted by I. Hoteit, M. Mazloff)
294    o pkg/autodiff, pkg/ctrl:
295      Add flag to reduce all tapelev I/O to single-prec.
296      In data.ctrl set
297        doSinglePrecTapelev = .TRUE.
298    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
299      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
300    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
301      real fresh water flux (not yet)
302    o pkg/mdsio & rw:
303     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
304     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
305    o pkg/flt:
306     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
307       init_fixed & ini_varia.
308     - clean-up & simplify linear interpolation S/R:
309       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
310     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
311     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
312     - add vert. coordinate & horiz. indices to output files.
313     - change vertical position in initial condition, from index to depth [m].
314     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
315       (easier to get to a curvilinear grid) ; delX,delY no longer used.
316    o pkg/ggl90: a few modifications:
317     - fix bottom boundary condition, and interpolation of KappaE
318       near top and bottom
319     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
320     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
321     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
322    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
323      (maintain temporary backward compatibility, until next checkpoint)
324    
325    checkpoint61h
326    o pkg/diagnostics with "periodic averaging diagnostics":
327      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
328    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
329    o pkg/obcs: fix loop ranges for balancing code
330    o pkg/flt:
331     - improve criteria for finding which tile owns a float.
332     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
333    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
334      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
335      with ocean biogeo)
336    o pkg/flt:
337     - do some cleaning and fix the restart ;
338     - add output.txt in flt_example/results to get this pkg tested.
339    o genmake2: add an EXTENDED_SRC option and flag.
340       for now, cannot be turned on on command line (only through genmake_local)
341    o pkg/mdsio: read/write vector:
342     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
343     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
344       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
345     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
346      (drop to 4 digits matching for grad). But this test does not look very
347      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
348    
349    checkpoint61g
350    o pkg/flt:
351      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
352       + make OPTIONS file more standard.
353      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
354      - fix _BYTESWAPIO CPP-Flag
355      - standard reading of file-parameter "data.flt"
356      - fix argument list of S/R FLT_RESTART
357      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
358    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
359    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
360      a still unfixed compiler/optimization bug
361    
362    checkpoint61f
363    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
364      update results of global_ocean.cs32x15.icedyn test.
365    o move getcon.F from model/src to pkg/fizhi.
366    o pkg/exf: add parameter for extrapolation of temp up to the surface
367       and option to prevent negative evap (in bulk_largeyeager04 only).
368    o Prather Advection scheme: fix tracer conservation for divergent flow
369      (e.g., when using NonLin Free-Surface).
370    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
371    o gmredi (Visbeck-variable-K):
372     - add more parameters to Visbeck-variable-K.
373     - use a 5 points average for dSigmaR in Visbeck-K calculation
374       (more "homogenous": same stencil and same weights as in dSigmaH)
375     - update output of ideal_2D_oce experiment.
376    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
377      (#undef REAL4_IS_SLOW)
378     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
379       coordinate variable
380     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
381       (surface forcing fields), removes some of the functionality
382     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
383     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
384       probably not all: copy _RS surface flux fields to RL field before
385       calling DIAGNOSTICS_FILL
386     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
387       real*4 (CALL EXCH_*_RS) versions.
388     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
389       (generate new output).
390    
391    checkpoint61e
392    o gmredi (Visbeck-variable-K):
393      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
394      - change computation of Visbeck-K where Slope > Smax :        
395        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
396        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
397    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
398      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
399    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
400    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
401      does not become too large (to avoid precision problems in implicit-diffusion
402      solver); update ideal_2D_oce output.
403    o pkg ggl90:
404      - in ggl90_cal.F: compute only one set of visc/diff, used to
405        step forward TKE/T/S/momentum
406      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
407        have Prandlt =1)
408    o gmredi (fm07):
409      - add lower limit on Transition layer thickness + lower limit on 1/lambda
410      - allow to set few more params from data.gmredi
411    o pkg ggl90:
412          - add missing sqrt(2) factor in computation of mixing length
413            scale in ggl90_calc.F
414            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
415    
416    checkpoint61d
417    o adjoint modifs
418      - adapt to new field rhoInSitu
419      - allow to revert from StoreDynVars2D, StoreDynVars3D
420        to individual fields
421        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
422    o store 3-D (in-situ) density in commom block (DYNVARS.h)
423     - save 1 rho computation.
424     - no longer modify T & S inland when using down_slope pkg.
425    o gad_som : allow to switch to SOM advection for T & S without corresponding
426      pickup files (using new S/R: MDS_CHECK4FILE).
427    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
428      (for useSingleCpuIO to work in multi-threaded)
429    o pkg/shelfice:
430     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
431       with SHELFICEtopoFile in data.shelfice
432     - move code for reading ice shelf topography and modifying hFacC into separate
433       subroutines of the shelfice package
434     - separate initialisation of "fixed" and "variable" variables
435     - kTopC is not (yet) replaced by kSurfC, although this is possible
436    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
437    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
438      and rename:
439      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
440      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
441    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
442    
443    checkpoint61c
444    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
445      to add mass source/sink of fluid in the interior (3-D generalisation
446      of oceanic real-fresh water flux).
447    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
448    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
449    o new pkg: down_slope
450      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
451      - presently, modify T & S inland (dwnslp_calc_rho.F).
452        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
453      - implementation for ocean in P-coords not tested.
454      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
455    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
456      (to facilitate conversion of oceanic pkg to p-coordinate).
457    o change FIND_RHO to FIND_RHO_2D :
458      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
459    o new pkg: cheapaml
460    
461    checkpoint61b
462    o exch2:
463      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
464      - no longer depend on the order sequence (N,S,E,W).
465      - 3rd exchange no longer needed (tested with 24 tiles).
466      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
467      - exch_UV_A-grid readily available (but not yet tested).
468      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
469      (both are no longer needed) in exch_uv: no effect in forward run; but
470       get truncation error differences with adjoint exch.
471    o exch2:
472     - change index-bounds storage (moved from target to local tile,
473       more intuitive this way) ; rename/remove some variables.
474     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
475    
476    checkpoint61a
477    o exch2/matlab-topology-generator:
478      fix bug in index bounds for N-S internal exchange (hard to tell if this
479      had any effect on the solution).
480    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
481      is exceeded
482    o testreport: modify syntax of awk, so that it works also with
483      awk, and not only with nawk and gawk
484    
485    checkpoint61
486    o autodiff
487      Change default for TAF usage by removing argument '-nonew_arg'
488      This changes TAF subroutine argument list (ordering of active var.)
489      Omission of this flag leads to incompatibility w.r.t. TAMC
490      To restore TAMC-compatibility, need following modifs:
491      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
492      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
493      Tested TAF version is 1.9.22
494      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
495    
496    checkpoint60
497    --->>> This is the last checkpoint for which generating the adjoint
498    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
499    --->>> by default.
500    --->>> Future checkpoints will ommit this flag by default.
501    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
502    o pkg/grdchk: Add gradient check to etan0 perturbations.
503    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
504    o pkg/autodiff: more flexibility in zeroadj.
505      model/src: modifying do_oceanic_phys.F accordingly.
506    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
507    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
508      special setup of gmredi for which the adjoint is stable
509      enough for parameter optimization.
510    o bridging the gap between eddy stress and GM.
511      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
512          along with a change in CPP option (now ALLOW_EDDYPSI).
513      -> when using GM w/ GM_AdvForm:
514          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
515          is applied either in the tracer Eq. or in momentum Eq.
516          depending on data.gmredi (intro. GM_InMomAsStress).
517      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
518      The key modifications are in model/src/taueddy_external_forcing.F
519      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
520    
521    checkpoint59r
522    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
523      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
524      fix option to read coriolis(@ cell-corner) from files with CS-grid.
525    o pkg/mnc: add some attributes to standard 1D-coordinate variables
526    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
527      mass points, when using mnc for output
528      - add runtime parameter (missing_value, missing_value_int) to override
529        default (which is the value of getcon('UNDEF'))
530    o pkg/mnc: prepare mnc for the actual use of missing values with the
531      diagnostics package: small fix in mnc_cw_readwrite.template and more
532      initialisation of never used fields
533      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
534      versions
535    o pkg/thsice/thsice_ini_vars.F added default initial values so that
536      thermodynamics sea ice solver does not blow up when some initial fields
537      are missing.
538    o move from external_forcing_surf.F to ini_forcing.F
539      the p-coord. hack consisting in using pLoad to set phi0surf ;
540      update output of tutorial_global_oce_in_p (affected @ truncation level).
541    o Freshen up a bit hs94.1x64x5, notably:
542      remove rotationPeriod and tRef=5*0. (adjoint only), and add
543      exactConserv=.TRUE.
544    o pkg/generic_advdiff:
545      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
546      applies to files where Temperature & Salinity 2nd Order moments are used.
547    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
548      this uses a dynamically allocated internal state data structure
549      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
550      and requires a fortran 90 compiler
551    
552    checkpoint59q
553    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
554       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
555    o Refresh tutorial_global_oce_biogeo, notably:
556      - change bathymetry (put back seamounts in ACC, use hFacs)
557      - change EOS (POLY3 --> JMD95Z)
558      - use Bryan-Lewis vertical diffusivity
559      - use multidimensional advection
560      - remove old virtual virtual in dic pkg, now done through ptracer pkg
561      - change a couple of parameters in dic pkg
562    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
563    o pkg/obcs: change default to OBCSfixTopo = .true.,
564      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
565      - replace "debugMode" with "debugLevel .GE. debLevB"
566    o implementation of TAF directives for gchem,cfc,dic
567    o remove "exp5" (replaced by tutorial_deep_convection).
568    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
569      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
570      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
571      --> changes results in exp4, seaice_obcs
572    o tutorial_deep_convection :
573      update the set-up and increase resolution and domain size ; start
574      from pseudo initial conditions = output at t=120mn in order to see
575      something happening when running testreport.
576    o pkg/seaice: add os7mp as an advection scheme
577                  add check for advection schemes
578                  add a flag for restoring T and S underneath sea ice
579    o pkg/my82: add netcdf-support and diagnostics
580    o thsice pkg:
581      - Now hsMax limits snow height by turning it into ice following
582        flooding scheme (and now conserving energy)
583      - Slight rewriting of the formula in thsice_calc_thick.F
584      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
585      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
586    
587    checkpoint59p
588    o gchem / dic / cfc :
589      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
590      - add new parameter files: "data.dic" & "data.cfc" ;
591      - various re-arrangement in initialisation & header file ;
592      - fix tutorial_global_oce_biogeo for multi-threaded test.
593    o pkg/dic: test for "pickup_dic" file when restarting ;
594      if no pickup-file, can restart with a re-initialised pH (same as it did
595      before) providing pickupStrictlyMatch is set to False.
596    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
597      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
598    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
599      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
600    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
601     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
602       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
603    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
604       scheme to use for vorticty-term ;
605     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
606       (with default selectVortScheme, return to original discretisation)
607     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
608    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
609    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
610      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
611      also fix diagnostics VISCAHW & VISCA4W.
612    
613    checkpoint59o
614    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
615    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
616      move a few statemens out the main loop into separate loops
617    o pkg/shelfice:
618      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
619        (kg/m^2/s), does not break tests, because in verification/isomip,
620        rhoConstFresh=rhoConst (by accident)
621      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
622      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
623        new file model/src/seawater.F, so that they are available for all pkgs.
624      - convert potential temperature into in-situ temperature. This changes the
625        isomip tests => update tests
626    o add a flag writePickupAtEnd (default=true) to be able to suppress
627      writing a pickup at the last timestep
628    o tools/mpack-1.6 :
629      - disable automake (not working) and autoconf (not needed).
630      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
631        also cleaner with much less compilation warnings.
632    o pkg/profiles:
633      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
634      (for "less than 32 characters name" compiler requirement)
635    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
636      conditions that have a different sampling frequency than S/T/U/V obcs
637    o pkg/diagnostics (stats-diags):
638      - fix global Min/Max in case 1 processor get only empty tiles
639    o genmake2: replace (4 times)
640         make genmake_tc_1.o >> genmake_warnings 2>&1
641      with
642         COMM="$CC $CFLAGS -c genmake_tc_1.c"
643         echo $COMM >> genmake_warnings
644         $COMM >> genmake_warnings 2>&1
645      to make genmake2 always see the value of CC as specified in the optfile.
646    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
647      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
648      - modify verification advect_cs test to test SOM-advection on CS-grid.
649    o pkg/ctrl:
650      - Rewrite of ctrl_map_ini_ecco.F,
651        introducing a generic routine (ctrl_map_ini_gen.F).
652      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
653    
654    checkpoint59n
655    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
656      number in dedicate array "hdiag":
657      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
658        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
659      - many small changes (integer format) for large number of diagnostics
660      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
661        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
662    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
663      usingSphericalGrid, this allows to define the rotated grid coordinates
664      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
665      geographical coordinates according to the inverse of the rotation defined
666      by the Euler angles, so that Coriolis parameter and online-interpolation by
667      exf works with the geographical coordinates on XC/YC/XG/YG.
668      Naturally, this feature does not work with all packages, so some
669      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
670      profiles), because there the coordinates are assumed to be regular
671      spherical grid coordinates.
672    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
673      - introduce isopycnal diffusion coefficient control.
674    o tools/adjoint_options:
675      - additional control vector components.
676    o pkg/mnc: have mnc create marginally meaning full coordinate variables
677      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
678    o pkg/mypackage:
679      - add example of read/write pickup for state-var ;
680      - add entry points to the main code for state-vars diags & write-pickup.
681    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
682      transitions for useExfYearlyFields
683      - add new subroutine that determines the file to read from for
684        use*YearlyFields = .TRUE. and .FALSE.
685      - add a verification experiment to global_with_exf that tests
686        useExfYearlyFields with USE_EXF_INTERPOLATION defined
687    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
688      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
689      subroutines (which could be generated from a template, because they are
690      almost identical), for now they are included in obcs_prescribe_read.F for
691      simplicity
692    o pkg/exf:
693      - add a little more diagnostic to exf_interp_read (in analogy to
694        mds_read_field, can be turned off with debugLevel < debugLevA=1)
695      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
696        ugly but fast by unrolling short inner loops, inserting a unroll=8
697        directive in routine lagran, and splitting a loop and making do while the
698        outermost loop (the latter requires the intoduction of index arrays)
699    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
700    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
701      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
702    o verification/seaice_obcs: updated for restart test and latest options
703    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
704      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
705      for now this is only available for the C-grid code and also within
706      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
707    
708    checkpoint59m
709    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
710      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
711    o gad_som : fix flux output (& diagnostics) to have same units as other  
712      advection scheme fluxes (was previously multiplied by deltaT).  
713    o added verification/seaice_obcs both to test seaice open boundaries
714      and to provide an example matlab scrpt for generating them
715    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
716    o pkg/salt_plume: clean up salt_plume_frac.F to
717      remove redundancy in PlumeMethod 1 and 4
718    o pkg/kpp: added saltplume diagnostics
719    o pkg/obcs and pkg/seaice:
720      - do not set uice and vice to zero when OB*icefile are unspecified
721      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
722      - moved seaice tracer obcs after call to seaice_growth
723    o pkg/salt_plume: added various options for salt plume depth
724      criterion and for vertical distribution of the salt
725    
726    checkpoint59l
727    o pkg/ptracers: new version of ptracers pickup:
728      read meta file and write only fields which are needed to restart.
729      ( same logic as main pickup file ; also using pickupStrictlyMatch )
730    o pkg/seaice:
731      - add timescale for melting due to warm mixed layer as a means of
732        setting SEAICE_availHeatFrac more conveniently
733      - add a CPP-flag/runtime parameter check for flooding algorithm
734      - reformulated availHeat in seaice_growth.F to be independent of AREA
735    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
736      unit changes
737    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
738    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
739      SX vector computer.
740    o pkg/seaice:
741      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
742        seaice forcing fields can now be read only through pkg/exf
743      - removed some unused halos
744    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
745    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
746      or U/VICE from U/VWIND before computing U/VSTRESS
747    
748    checkpoint59k
749    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
750      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
751    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
752      all experiments pass when compile with un-initialised var. checking option.
753    o added pkg/salt_plume
754    o script to test restart (for now, in MITgcm_contrib/jmc_script)
755    o pkg/seaice: new read/write pickup version.
756      read meta file and write only fields which are needed to restart.
757      ( same logic as main pickup file ; also using pickupStrictlyMatch )
758    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
759    o lab_sea.hb87: modify the domain & update output.hb87.txt :
760      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
761      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
762      process. Fixed here by closing the domain at the Northern boundary.
763    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
764    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
765      a set of consecutive levels in/from a 3-D array.
766    o pkg/ptracers:
767      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
768      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
769    
770    checkpoint59j
771    o in pkgs: dic, obcs, offline, rbcs:
772      standard way to compute coeff. for time interpolation between 2 time reccords
773      which retains full precision (& make results less dependent on compiler).
774      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
775    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
776      packages instead of reading ice cover and wind speed separately
777    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
778     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
779      to allow to compile customized code before the update)
780    o cleaning-up:
781      - fix CPP instruction syntax in pkg/obcs
782      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
783        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
784      - fix some threads issue in IO parts.
785    o pkg/dic:
786      - add tons of "_d 0" (--> much better testreports !)
787       and then update outputs of tutorial_global_oce_biogeo
788    o pkg/mom_fluxform:
789      add a special version of momentum advection intended to conserve momentum
790      next to a bathymetry step or a coastline edge. (default = off = #undef)
791    o new read/write pickup version:
792      - for now, only implemented for main (mdsio) pickup file.
793      - write out only what is needed to restart; merge pickup_nh , pickup_ph
794        and main pickup together.
795      - read meta file; read only what is needed to restart; stop if a field
796        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
797        if it make sense (even if the restart is not perfect).
798      - if no meta file, assume that pickup to read corresponds exactly to
799        a pickup that would currently be written.
800      - read pickup written in the old format (until checkpoint59i) if it
801        recognizes an old meta file (no field-list).
802      - add a meta file in exp. which starts from a pickup: 2 cases:
803        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
804         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
805        b) a meta file describing the content of the associated pickup file
806         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
807    o pkg/mdsio & pkg/rw:
808      - new routine to read a meta file ; new set of routine to read
809        Multiple-fields file (with meta file).
810    o added open boundary conditions capability for seaice
811        HSNOW, HSALT, UICE, and VICE
812    
813    checkpoint59i
814    o adjoint:
815      * fix multiDimAdvection adjoint
816        (partial recomputation problem by TAF for fVerT(:,:,kDown)
817        and comlev1 size definition (maxpass vs. max. number of tracers)
818      * verification/global_ocean.90x45x15 adjoint now tests
819        NLFS and multiDimAdvection using DST3 (=30)
820      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
821    o pkg/kpp: add "_d 0" to real constant (if missing);
822      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
823      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
824    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
825      for internal parameters related to restart process (formerly from PARAMS.h)
826      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
827    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
828      as argument. (only atm2d & obcs write_pickup have not yet been updated)
829    o pkg/monitor:
830      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
831      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
832      - account for deep Atmosphere factor and density factor (anelastic)
833    o added open boundary conditions capability for seaice HEFF and AREA
834    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
835      thermodynamics
836      - requires a little reorganization, which affects the testreport results
837        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
838        so that now the conservative form is tested
839      - add a few comments
840    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
841    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
842    o add new diagnostics to seaice: advective, diffusive fluxes (only for
843      multidim-advection, for scheme 2 they are not filled) and transports,
844      thermodynamic growth rates
845    o change units of EmPmR (inside the code, + within coupling interface)
846      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
847      Affects results @ truncation level (cg2d match) and update output of
848       experiments: lab_sea(6), global_ocean.90x40x15(10),
849      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
850      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
851      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
852      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
853    
854    checkpoint59h
855    o pkg/exf:
856      - improve vectorization by moving if-statement out of loops in
857        exf_mapfields, exf_radiation
858      - exf_bulkformulae.F: introduce 2D fields and vectorize code
859    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
860    o testreport:
861      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
862        monitor & update offline_exf_seaice exp. output.
863      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
864    o pkg/seaice:
865      - bug fix in the evp solver: boundary conditions were affected be
866        masking of zMax/zMin (changes results)
867      - minor bug fix in boundary conditions in seaice_calc_strainrates
868        (changes results for no_slip)
869      - seaice_lsr.F: make interpolation of eta dependent on boundaries
870      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
871      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
872        stress formulation and no-slip boundary conditions
873    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
874      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
875    o pkg/seaice: a first HSALT time stepping equation has been checked in
876    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
877      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
878      without requiring DO-IF statements
879    o pkg/thsice:
880      use continuous power-law function for partition of energy between lateral
881      melting/freezing and thinning/thickening ; old code using step function
882      still available with #undef THSICE_FRACEN_POWERLAW
883      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
884    o testreport: change AD testing : check against results/output_adm.txt
885      using same scripts as for forward test.
886    
887    checkpoint59g
888    o adjoint testing: in preparation for changing testreport:
889      - output format: cost and grad written on separated lines
890      - ad output results in directory "results" (instead of "results_ad")
891    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
892    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
893    o pkg/ecco: allow user defined cost function contributions
894    o testreport:
895      Allow to choose (per experiment) the list of tested output variables
896       and the main variable (used to issue a pass/FAIL ) ;
897      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
898      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
899      Also modify printing of summary:
900       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
901       b) echo the list of tested variables in the individual summary.txt of
902          each experiment.
903    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
904      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
905      (but still depend on the tile decompostion of the domain).
906    o pkg/seaice: change a discretization detail to make the B-grid code
907      "more symmetric". This change is likely to remove all "ridges/leads" that
908      where quasi-aligned with the grid in B-grid solutions. It may also be
909      the solution to the stress coupling issues with the B-grid.
910    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
911      remove .cvsignore from input dir. (since testreport no longer run here).
912    o pkg/thsice:
913     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
914     - fix reshaping of sea-ice just after advection:
915       melt all the ice only if ice-volume is too small.
916     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
917       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
918     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
919    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
920      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
921    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
922      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
923      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
924      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
925      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
926      -> update output.txt
927    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
928     this affects truncation error: -> update output.txt of exp:
929      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
930      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
931    
932    checkpoint59f
933    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
934    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
935      a bounded range (in forward mode)
936    o pkg/ecco, ctrl, autodiff and mom_common:
937     internal parameter controls, completements of implementations
938    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
939    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
940      (not seem any difference in testing results).
941    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
942       at face corners.
943    o pkg/generic_advdiff:
944     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
945      loop range indices for computing vertical advection tendency
946      and do the calculation in the interior only (no overlap) ;
947      for now, only implemented for SOM advection (to save CPU time).
948     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
949    o exch2 adjoint
950      First set of changes:
951      - add exch2 hand-written adjoint templates
952      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
953        This will require cleanup in pkg/autodiff/*.F
954        (changed routines currently kept separate in verif. code/)
955      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
956        that used to hide exch2 or cubed-sphere specific code
957        (commented via 'cph-exch2')
958    o pkg/seaice
959      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
960    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
961       output of global_ocean.cs32x15.thsice .
962    
963    checkpoint59e
964    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
965      for B-grid vector (not yet tested) and C-grid vector (<- only used
966      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
967    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
968      (#ifdef ALLOW_SALT_PLUME)
969    o gather_2d/scatter_2d: removed halo regions
970    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
971      scheme and the corresponding test case (under front_relax dir). For now,
972      only available with Skew-flux form and not yet tested in realistic set-up.
973      adjoint: store directives updated, but gradient checks deteriorated,
974      so maybe GM/Redi adjoint is now broken.
975    o seaice adjoint
976      * add AREA, HEFF, HSNOW as control variable
977        (should not change lab_sea results)
978      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
979    o pkg/seaice:
980      * added computation of saltFlux in seaice_growth;
981        For time being, sea ice salinity is assumed constant
982        contribution of snow flooding to freshening of sea ice is neglected.
983        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
984        defaults to 0.0 in order to maintain backward compatibility.
985        Typical values for SEAICE_salinity are 4 to 10 g/kg.
986      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
987      * added SEAICE_availHeatFrac, which specifies fraction of surface level
988        heat content used to melt or grow ice
989      * commented out cap of HICE: it helps keep ice thinner
990      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
991      * applied OBCS T/S mask to HEFFM sea ice mask
992    
993    checkpoint59d
994    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
995     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
996     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
997    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
998     and change default value of parameter "GM_Small_Number";
999     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1000       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1001       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1002    o pkg/ecco: cost function when applying pkg/smooth to controls
1003    o pkg/ctrl: add forcingPrecond run time parameter
1004    o pkg/seaice:
1005     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1006     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1007       changes verification/lab_sea
1008     - rearrange implicit part of u-equation in LSR solver to make it easier to
1009       read, understand, and debug. This causes changes at the truncation level.
1010     - fix (serious) bug in the boundary conditions (sign error in the implicit
1011       part) of the LSR solver. Changes all LSR results.
1012     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1013       is initilized with small values - does not change lab_sea results.
1014     - added HsnowFile initialization capability
1015    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1016     initialization of pkg/smooth and application to control vector
1017    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1018    o dependencies: pkg/profiles requires pkg/cal
1019    o pkg/profiles:
1020     - added option ALLOW_PROFILES_GENERICGRID
1021         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1022         that interpolation information (grid points and coefficients) is provided
1023         within the netcdf input files.
1024         -> sample matlab scripts can be found in MITgcm_contrib/gael
1025         that allow you to prepare netcdf input files.
1026     - also modified: cleaner include statements, cleaner error print statements,
1027       cleaner stops when error, and more tests of the netcdf input files consistency.
1028    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1029    o pkg/seaice:
1030     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1031       requires a new routine: seaice_diagnostics_fill.F
1032     - make sure that seaice does not move if not forced (pressure replacement
1033       method, Hibler and Ip, 1995), changes results
1034     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1035     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1036       It is turned off by default (=-1.), because it changes the results.
1037     - make it possible to read AREA from a file, too.
1038    
1039    checkpoint59c
1040    o add S/R and diagnostics for oceanic mixed-layer depth
1041    o move GMRedi call after all vertical mixing schemes (including KPP)
1042    o pkg/thsice:
1043     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1044      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1045    o pkg/obcs:
1046     - bug fix for balance code
1047    o pkg/seaice:
1048      - allow values of SEAICE_elasticParm > 1
1049      - add new parameter SEAICE_evpTauRelax as an alternative
1050        to SEAICE_elasticParm
1051      - make lsr boundary conditions free slip (by default), changes result
1052      - add code for no slip boundary conditions for lsr
1053      - set minimum of zeta to zero (and not 4e8) (changes results)
1054      - add a cap on AREA after advecting AREA if seaice_growth is not called
1055    o change calculation of Visbeck K:
1056      - no longer depend on tapering scheme; instead, compute slope (limited
1057        by GM_maxSlope). this is equivalent to what was comuted before with
1058        clipping or linear tappering.
1059      - fix vertical averaging (wrong by 1/2 level)
1060      - leave the old version (but will not be maintained) within
1061        #ifdef OLD_VISBECK_CALC / #endif
1062      - update output of exp. ideal_2D_oce
1063    o change error catch in calc_r_star to improve vectorization
1064    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1065      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1066    o adjoint:
1067      Re-organized adjoint checkpointing according to Matt Mazloff
1068      (but with modifs/completions/cleanups)
1069      Storing is now bundled into large arrays to optimized I/O
1070      (and second step in cleanup of the_main_loop)
1071    
1072    checkpoint59b
1073    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1074      - export/import (between ocean & coupler) fields needed for ocean DIC.
1075    o pkg/seaice:
1076      - get rid of three more exchanges seaice_calc_viscosities (required
1077        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1078      - bug fix in seaice_ocean_stress (update of lab_sea required)
1079      - reduce loop boundaries to necessary minimum also in seaice_evp
1080      - go back to the old way of computing deltaC/Z as the adjoint likes that
1081        better
1082    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1083      passive tracer to an Age Tracer) + update output.txt
1084    o pkg/exf:
1085      - implement A-grid / C-grid selection for wind-stress input files.
1086      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1087      for now, in exf_bulk_largeyeager04.F only :
1088      - change implementation for case where windspeed + 2. components wind-stress
1089        are read-in. AND use rhoConstFresh to convert evap.
1090    o pkg/seaice:
1091      - use correct EXCH_UV for wind-forcing (on A-grid).
1092      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1093        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1094    o pkg/exf:
1095      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1096      EXF_INTERPOLATION:
1097      - merge global_with_exf/code version of exf_interp_read.F
1098        to the main code ;
1099      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1100        reading the file ; Important: This options needs to be defined to recover
1101        previous code.
1102        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1103      - no longer loose real*8 precision along the way when using exf_iprec=64.
1104    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1105      - change discretisation of evp-solver in order to avoid another exchange
1106        (changes lab_sea) and clean up a little
1107      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1108        help the adjoint (this also changes the results slightly)
1109      - add a few "_d 0" where they had been missing in seaice_evp.F
1110      - cleaning up: remove unused seaice_calc_rhs.F
1111    o pkg/exf: some cleaning-up:
1112      - change various "constants" into runtime parameters
1113      - cleaned-up Large&Yeager04 routine which should eventually
1114        replace exf_bulkformulae.F (changed names of S/R and CPP)
1115        and merged various ALLOW_ATM_WIND options
1116     only used with thsice pkg (in thsice_get_exf.F):
1117      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1118        which are used when useStabilityFct_overIce=TRUE (= the default)
1119      - change default values of ice & snow emissivity and scale downward LW
1120        by ice & snow emissivity.
1121    o pkg/thsice:
1122     fix few little problems, in thsice_calc_thickn.F:
1123      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1124      - melt only laterally if hIce < hThinIce (as the comments say)
1125      and in thsice_extend.F:
1126      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1127      - start to form ice as soon as the minimum ice-volume is reachable.
1128     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1129      and cpl_aim+ocn
1130    o pkg/kpp
1131     - move computation of surface related input fields to KPP into a new
1132       subroutine kpp_forcing_surf.F
1133     - remove wrong (within bi,bj loops) EXCH calls.
1134     - little cleaning (add argument myThid in last position, cvs header ...)
1135     - for now, fix conservation problem by exchanging KPPviscAz (may not
1136       be the best fix)
1137    o pkg/seaice
1138     - check for inconsistent evp parameter/cpp-flag combination
1139     - remove leftover errIO flat for obsolete name list error handling
1140    o OpenAD
1141     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1142    
1143    checkpoint59a
1144    o pkg/seaice: some parameter clarifications and a little bit of clean up
1145    o pkg/thsice: rename run-time parameters:
1146       himin       -> hIceMin
1147       himin0      -> hThinIce
1148       hihig       -> hThickIce
1149       i0          -> i0swFrac
1150       transCoef   -> bMeltCoef
1151       frac_energy -> fracMelting
1152      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1153       with default values (for now) that do not change the results.
1154      remove old version of thsice vars advection in pkg/seaice.
1155    o in FFIELDS.h:
1156      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1157      - make pLoad & sIceLoad always available (but still only used if
1158         ATMOSPHERIC_LOADING is #define).
1159    o pkg/kpp: replaced _KPP_RL with _RL
1160    o bug fixes for vertical diffusivity computations when both KPP and
1161        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1162        are no longer updating the vertical diffusivity array
1163        (passed as argument) but are (re-) setting those arrays.
1164    o pkg/seaice: fix bug in evp solver, while doing that
1165      - change (improve?) discretization of stress computations for both
1166        cgrid-lsr and evp solver
1167      - add a new routine to compute strain rates
1168      - the above changes lab_sea results
1169      - add no slip conditions for evp solver (off by default), lsr-version
1170        may follow
1171      - fix exchange for shear at Z-points (does not change lab_sea)
1172      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1173        (to force the user to pick a time step since there is not "safe" way
1174        of choosing it)
1175      - add principal stress diagnostics
1176      - rearrange fields for evp a little to avoid having to call a: too many
1177        exchanges and b: exchanges for stress trensor components which we do
1178        not have.
1179      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1180        of evp, complete rewrite for lsr case (latter is does not yet work
1181        in all cases)
1182    o pkg/kpp: add code to have mixing in shelf ice caverns
1183      - add myThid to all kpp routines (long overdue)
1184    
1185    checkpoint59
1186    o pkg/exf:
1187      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1188        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1189      - move exf header files from lower_case.h to UPPER_CASE.h ;
1190        add missing cvs Header & Name
1191      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1192      - add namelist param. selectStressGridPosition, exf_monFreq
1193      - retire many _CLIM routines, and remove data.exf_clim
1194        + params moved to data.exf
1195        + climsst, climsss now handled by exf_set_gen, i.e.
1196          climss?period=0 refers to constant field,
1197          climss?period=-12 to monthly forcing
1198      - split up namelists in data.exf
1199    o pkg/seaice:
1200      - remove seaice_exch and seaice_exch_uv
1201      - remove superfluous exchange of theta
1202      - add myThid to seaice_budget_ocean/ice
1203      - add new interface for atmospheric wind forcing (C-grid only)
1204        + new routine
1205        + two new field (taux, tauy for stress over ice)
1206        + removed one global field (DAIRN) for C-grid case only
1207    o pkg/thsise
1208      - 2nd set of modifs for thsice adjoint in conjunction with exf
1209    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1210    
1211    checkpoint58y_post
1212    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1213      vertical diffusivity, similar to that in MOM4; turned on using
1214      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1215      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1216    o Added capability for 3D specification of background vertical diffusion
1217      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1218      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1219      "data" file that contains the 3D vertical diffusivity coefficients.
1220    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1221      - add code within pkg thsice to advect & diffuse sea-ice fields
1222      similar to (and will replace) what has been added in  seaice_advdiff.F,
1223      but: - conserving Mass, Heat & Salt.
1224           - better when using non-linear advection scheme (not yet fully tested)
1225           - can also be used in atmospheric set-up (for now, only the diffusion).
1226    
1227    checkpoint58x_post
1228    o IO option for global-file compact format:
1229      - add options when generating topology (utils/exch2/matlab-topology-generator)
1230      - add I/O capability (pkg/mdsio).
1231      - adapt utils/matlab/rdmds.m to read this format.
1232      for now long-line format not yet supported by pkg/mdsio (& exch2).
1233    o shelfice: add a few diagnostics
1234    
1235    checkpoint58w_post
1236    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1237      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1238      (and replace horiVertRatio in NH code).
1239      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1240                         and tutorial_plume_on_slope (sensitive to truncation)
1241    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1242      directly to drive seaice model (C-grid only)
1243    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1244     - reintroduce computation of wind from stress,
1245     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1246       mass points to avoid tau = 0
1247     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1248    o rdmnc.m: make it work with "global" files created with gluemnc
1249    o rdmnc.m : some improvements in dealing with singleton dimension
1250      (tested on all testreport mnc output files).
1251    o genmake2: disable pkg/profiles if netcdf test fails.
1252    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1253    o move call to cal_readparms up to make calendar parameters/variable available
1254      to all packages
1255    
1256    checkpoint58v_post
1257    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1258      useDynP_inEos_Zc tested.
1259    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1260    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1261      and portions thereof.  See read_cs.txt for description and examples.
1262    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1263      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1264      following the great-circle arc between those 2 points.
1265    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1266      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1267    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1268     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1269     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1270     - still needs work (not working with some options ; efficiency to improve)
1271       and serious testing.
1272     - use this scheme for temperature & salinity in 2 advection test exp.:
1273       advect_xy & advect_xz, respectively.
1274    
1275    checkpoint58u_post
1276    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1277    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1278    o testreport: add option "-skipdir" to skip some test.
1279    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1280      momentum calculation.
1281    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1282    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1283      remove checkpoint.F and the_correction_step.F (no longer used);
1284      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1285    o add option (linFSConserveTr) to correct for tracer source/sink due to
1286      Linear Free surface
1287    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1288    o pkg/thsice: fix reading mnc-pickups
1289    
1290    checkpoint58t_post
1291    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1292    o pkg/mdsio:
1293     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1294       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1295       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1296     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1297     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1298       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1299     - new S/R (to replace MDSWRITEMETA), which allows to write more
1300       informations (variable names, time ...) to meta files.
1301     - modify rdmds.m to give back the meta file content.
1302    o pkg/diagnostics: change vertical interpolation to be safer, and more
1303       flexible (define p-levels to interpolate to in data.diagnostics);
1304      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1305       diagnostic pointer.
1306    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1307    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1308    o fix multi-category seaice:
1309     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1310       SEAICE_MULTICATEGORY
1311     - fix short wave heat flux
1312    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1313       and allow to use EVP solver. Change forward lab_sea: test both EVP
1314       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1315    o Initial check-in of lab_sea adjoint
1316      (very similar to natl_box_adjoint/code_seaice)
1317      * used C-grid and EVP solver
1318      * used KPP, GM/Redi
1319      * uses inAdExact=.TRUE.
1320      * gradient checks fail for both ADM and TLM
1321        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1322        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1323        issue is related to forward mismatch between g77 an ifort
1324    o pkg/seaice: overhaul of thermodynamics
1325     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1326     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1327     - move a few global fields out of SEAICE.h into seaice_growth.F and
1328       make them 2D (FICE/QNETO/ ...)
1329     - remove FO (it is the same as QNETO)
1330     - introduce a few local fields to avoid modifying external fields such
1331       as atemp, etc.
1332    
1333    checkpoint58s_post
1334    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1335      changed exf_set_gen.F so that
1336        genperiod=0 means input file is one time-constant field and
1337        genperiod=-12 means input file contains 12 monthly means
1338    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1339      this affects truncation error ; generate new output file for exp. which
1340      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1341        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1342        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1343        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1344        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1345        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1346    o start implementation of deep-atmosphere and anelastic formulation
1347    o verification: remove 2nd copy of input files and use script "prepare_run"
1348      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1349    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1350    o profiles: fix for multithreaded case
1351    
1352    o diagnostics: rename few diags:
1353      s/'PRESSURE'/'RCENTER '/g
1354      s/'TICE    '/'oceFreez'/g
1355      s/'TAUX    '/'oceTAUX '/g
1356      s/'TAUY    '/'oceTAUY '/g
1357      s/'SWFLUX  '/'oceQsw  '/g
1358      s/DIFx/DFxE/g
1359      s/DIFy/DFyE/g
1360      and add few ocean-forcing diagnostics:
1361      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1362    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1363      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1364      as actual snow thickness.  It now refers everywhere to effective snow
1365      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1366    
1367    checkpoint58r_post
1368    o modifications to pkg/seaice/growth.F, which change results of
1369      lab_sea experiment: fixes pertain to melting snow over open water, to
1370      masking EVAP under sea ice, and to using the correct AREA variable for
1371      computations of EVAP, PRECIP, HSNOW, and GHEFF
1372    o add ability to read bathy, salt, and theta using MNC (off by def)
1373    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1374      both are turned off by default and do no change any results
1375    o seaice advection with pkg/thsice: a step toward the use of non-linear
1376      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1377    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1378      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1379      in natl_box (affects results @ truncation level: update output.txt)
1380    o multi-threading and IO:
1381      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1382      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1383        (needed to work with SingleCpuIO): tested in all verif. exp.
1384    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1385      affects the results (but none of the verification test uses this scheme).
1386    o Adding some pkg/diagnostics capability to pkg/seaice
1387      (will certainly be subject to changes)
1388    o ctrl: adding new control variables:
1389      lwflux, lwdown, evap, snowprecip, apressure, runoff
1390    
1391    checkpoint58q_post
1392    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1393      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1394      high_res_cube configuration by 4% on Columbia.
1395    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1396      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1397      dynamical allocation (seems to work in multi-threaded).
1398    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1399      single CPU io) so that TAF does not have to see EESUPPORT.h
1400    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1401    
1402    checkpoint58p_post
1403    o obcs: stop if obcs is used with useCDscheme = .true.
1404    o shelfice:
1405     - fix a sign error so that no slip at shelfice interface works
1406     - remove stop for combination non-hydrostatic code and shelfice. That does
1407       not mean, that the results are correct, but at least they are numerically
1408       stable
1409    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1410    o added adjoint exch routined for all exch*3d* routines
1411      and updated flow directives
1412    
1413    checkpoint58o_post
1414    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1415      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1416    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1417      and clean-up reading/writing of pickup files.
1418    o fix local version of read/write pickup (NH part) in rotating_tank/code
1419    o simplify EXCH interface:
1420     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1421     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1422    o added the regrid package
1423    o shelfice:
1424     - add a simple boundary layer scheme to reduce noise
1425     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1426    
1427    checkpoint58n_post
1428    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1429       local variable (not in common block).
1430    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1431      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1432      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1433        to work with SingleCpuIO.
1434    o add "_d 0" to real constant of pkg/cfc subroutines ;
1435       update exp. cfc_exemple & tutorial_cfc_offline output files.
1436    o multi-threading and IO:
1437      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1438        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1439      - barrier before and after reading.
1440      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1441      - avoid using MDS_WRITELOCAL for LAND pkg output.
1442      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1443        common-block variables ; Allows multi-threading with master-thread IO.
1444    o change default MAX_NO_THREADS from 32 to 4 ;
1445      and stop cleanly when MAX_NO_THREADS is too small.
1446    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1447    
1448    checkpoint58m_post
1449    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1450       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1451    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1452       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1453       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1454    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1455        add MITgcm_tutorials (= code + all the tutorials)
1456    o ecco, option to compute cost for total ssh (mean+anom)
1457    o consistent with addition of ptracer and ssh in pkg/profiles
1458    o profiles: adding ptracer and ssh
1459    o testreport: change multi-test output-file name
1460      (from output.txt.{name} to output.{name}.txt)
1461    o profiles: now ok for mutli-tiles case
1462    o seaice: add 4 parameters for different advection schemes for area,
1463      (effective) seaice thickness, enthalphy, and snow height. Their default
1464      is the standard parameter SEAICEadvScheme
1465    o calc_gw:
1466     - add cosFacU in zonal viscous flux (harmonic.visc.).
1467     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1468       of tutorial_plume_on_slope.
1469    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1470    o calc_gw: true flux-form, account for horizontal grid spacing.
1471      update rotating_tank results, but not plume_on_slope (affected at
1472      truncation level, 11 digits).
1473    
1474    checkpoint58l_post
1475    o calc_gw:
1476     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1477     - remove side-drag for now (need to fix it); update plume_on_slope results.
1478     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1479    o commit code to make SST/SSS weights spatially variable
1480      (based on either variable in-situ or variable initial T/S weights)
1481    o pkg/ecco:
1482      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1483        now based on horizontally varying weights wthetaLev, wsaltLev
1484      * cost_averagesflags now returns year indices in addition to day, month
1485      * sflux balance is performed on annual basis
1486        (sflxumm, sfluxmm2, bal_sfluxmm)
1487      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1488        including separate counting and multipliers
1489    o pkg/rbcs
1490      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1491    
1492    checkpoint58k_post
1493    o testreport:
1494     - always build in dir. "build" (if not there, mkdir build instead of building
1495       & running in input)
1496     - run in dir run (if it exists), in build otherwise.
1497     - call prepare_run (if input/prepare_run exists)
1498     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1499    o pkg/exf modifications to interpolation and rotation routines for more
1500       reasonable treatment of North Pole singularity: for tracers North Pole
1501       value is set to northernmost zonal-mean value, for zonal velocity it is
1502       set to zero, and for meridional velocity it is set to northernmost value.
1503    o pkg/exf/exf_check_range.F
1504     - add tile index to diagnostics and move stop statement to the very
1505       end of the routine.
1506    o pkg/diagnostics: (diagnostics_main_init.F)
1507      define title of isomorphic variables according to the current config.
1508    o pkg/thsice with pkg/seaice dynamics:
1509    - fix domain of computation (interior only, required for exf) and do exchanges
1510    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1511    o towards a standard way of dealing with multi-threading in MONITOR
1512      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1513    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1514       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1515    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1516    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1517    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1518       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1519    o tracer advection:
1520     - clean-up and simplify calc_common_factors.F
1521     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1522       advection subroutine (but still not used within DST advection S/R)
1523    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1524    
1525    checkpoint58j_post
1526    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1527      from file (collects calls previously in FORWARD_STEP)
1528    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1529    o adjoint store dir. adjusted accordingly
1530    o genmake2
1531      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1532    
1533    checkpoint58i_post
1534    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1535      on wind stress (SEAICEstressFactor defaults to 1.)
1536    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1537      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1538    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1539      on CS-grid: no longer loosing mass.
1540    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1541  o pkg/ggl90: fix sloppy output and fix a bug  o pkg/ggl90: fix sloppy output and fix a bug
1542  o pkg/seaice: added SEAICEuseEVPpickup parameter  o pkg/seaice: added SEAICEuseEVPpickup parameter
1543    - Set to false in order to start EVP solver with    - Set to false in order to start EVP solver with
# Line 1108  o add two new packages Line 2642  o add two new packages
2642    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2643    - these scheme operate in a similar manner as KPP (without ghat, of    - these scheme operate in a similar manner as KPP (without ghat, of
2644      course), however there is only one diffusivity that is used for both      course), however there is only one diffusivity that is used for both
2645      temperature and salinity (and passive tracers)ç      temperature and salinity (and passive tracers)
2646  o add offline package  o add offline package
2647  o add "verification/dic_example" which contains a dic-gchem-ptracer setup  o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2648    provided by Stephanie Dutkiewicz    provided by Stephanie Dutkiewicz

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