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revision 1.596 by jmc, Sat Dec 31 01:21:41 2005 UTC revision 1.1119 by jmc, Tue Jun 9 22:55:35 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/mdsio, writelocal:
8       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
9       (remove the STOP): uses shared buffer IO to store data from all threads
10       and then let master-thread write nThreads tiles.
11    o pkg/mdsio (read/write field):
12     - tiled IO done in 1 piece (all levels at a time);
13     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
14     - multi-threaded: allow to read/write local (non-shared) array
15       (was already working with singleCpuIO ; now works also without);
16       => no longer needs barrier call after reading a file (added inside
17       mds_read/write field).
18     - move barrier calls outside gather/scatter_2d to mds_read/write_field
19    o pkg/obcs/exf
20      - exf_getffieldrec.F: add a few ". _d 0" and
21                            add code to catch the case fldperiod = 0.  
22      - obcs_precribe_read.F: change if statements so that they match
23                              the variable type (_RL)
24      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
25        exf_iprec) as part of namelist EXF_NML_01
26    o pkg/mdsio:
27      - read/write tiled (local) files: read/write 1-level tile chunk at a time
28        (instead of segment of length sNx); expected to speed up tiled IO.
29    o pkg/exch2:
30      - take buffer copy from/to array out of S/R exch2_send/recv into new
31        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
32        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
33      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
34      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
35        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
36        including Topology header file (and common blocks).
37      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
38        remove 2nd exch call in exch2_s3d_rx (no longer needed).
39      - document S/R arg. list (+ update some comments)
40    o pkg/seaice:
41      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
42        temperature and humidity over sea ice based on climatological values.
43      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
44        of LSR (this change is expected to change the results slightly because now
45        it uses slightly difference moduli from the second last LSR solution, but
46        that is more consistent with the stress computations; this part of the code
47        is not tested in the verification experiments)
48      - fix diagnostics for flux of ice in case of B-grid
49      - turn strain rates eij and press into global fields within global
50        common block in SEAICE.h for more straighforward diagnostics
51      - fix diagnostics for principal stress components, press, zeta, eta
52        to give something meaning full
53    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
54      new output (all 4 tests) using default rotationPeriod.
55    o pkg KPP:
56      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
57      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
58        and normal grid from 1 to Nr)
59    o Fix computations of L4rdt in mom_calc_visc.F
60    o eesupp:
61      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
62      should be called before a "stop" if we know that all process are going
63      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
64    
65    checkpoint61o
66    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
67    o model/src/ini_curvilinear_grid.F:
68       compute angleSin/CosC when they are not read from a file
69    o pkg/seaice:
70       add pseudo time stepping for LSOR
71    o pkg/exch2:
72       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
73    o pkg/seaice:
74       Adding separate sea ice albedo, drag coefficients, and HO in Southern
75       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
76    o SingleCpuIO:
77       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
78    o pkg/seaice:
79       put exchanged variable in (local) common block for MPI+Multi-Threads
80       to work (necessary with exch1, and for now with exch2 too).
81    o verification: to get more experiments tested with mpi, mth and mpi+mth,
82      change tiling of:
83       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
84       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
85      update output of exp:
86       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
87       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
88      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
89                       (note: output.txt generated on faulks using only 1 tile)
90    o eesupp & mdsio (SingleCpuIO):
91     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
92       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
93       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
94     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
95     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
96       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
97    o pkg/exch2:
98     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
99       read parameter file "data.exch2" if it exists; otherwise try default regular
100       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
101     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
102       with new code (not to be used, just as a backup solution).
103     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
104       in utils/exch2/input.
105    
106    checkpoint61n
107    o eesupp & mdsio (SingleCpuIO):
108      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
109        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
110        receive real*4 array (instead of real*8) to read/write 32.bit files.
111        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
112         and remove new mapping S/R)
113    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
114      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
115        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
116        when using exch2. Add S/R to map global io-buffer to global model array.
117      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
118    
119    checkpoint61m
120    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
121      and add 3 other S/R for other types (R4,R8,RS).
122      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
123    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
124     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
125     - reduce number of macro definitions (keep only those which are used);
126       can always call directly the corrresponding S/R if needed.
127     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
128       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
129     Fixed wrong type of arg in:
130       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
131       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
132     To fix: global_sum of var in common block is wrong (multi-threaded) in:
133       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
134     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
135    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
136      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
137    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
138    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
139      edges are closed (zero depth); might happen with "blank tiles";
140      for now, disabled if using OBCS.
141    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
142      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
143    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
144      to reduce length of 1.D array print in STDOUT.
145    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
146      + use 48 tiles (16x8): this will allow to test "blank tiles".
147    o start to test MPI + multi-threaded (change testreport to skip tests
148      where number of tiles do not match).
149    o genmake2: add option "-omp" to turn on Open-MP ;
150      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
151    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
152      and keep the original tile numbering. Note: compatible with old
153      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
154    
155    checkpoint61l
156    o Overlaps had been forgotten in calculating ijk keys : fixed
157    o fix cyrus makedepend for gcc 4.4
158    o experiment fizhi-cs-aqualev20:
159      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
160      and generate new output. Note: new output is much closer to the old
161      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
162      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
163    o pkg/fizhi:
164     - change to avoid indices going deliberately over array-bounds
165     - remove unnecessary MPI stuff
166     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
167     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
168       does not go over array-bounds and therefore returns reliable output.
169     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
170       this S/R has 4 output arguments, which are used inside "get_alarm";
171       when it is called with the same variable "ndum" in place of several
172       output arguments, this produces weird side effect inside "get_alarm"
173      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
174       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
175       address) and produces error.
176    o tools/gemake2: (March 27-29 2009)
177      with option "-mpi": link *_mpi files from "MODS" dir (this is what
178      testreport does).
179    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
180    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
181       update lab_sea.lsr & lab_sea.salt_plume results
182    o pkg/seaice:
183      Major overhaul of the LSOR solver: change discretization from original
184      finite differences to finite volume. The old routine is still in the
185      file seaice_lsr.F and can be turned on with the CPP-flag
186      SEAICE_OLD_AND_BAD_DISCRETIZATION
187      Along with this change, the discretization of the strain rates is changed.
188      The same flag turns on the old discretization in seaice_calc_strainrates.F
189      All verification experiments with seaice are affected (except for
190      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
191      results by setting the above flag.
192      Further changes involve changes in defaults:
193      - ALLOW_FLOODING is defined and turned on by default
194      - SEAICEadvSnow = .true. is now the default
195      - SEAICEadvSalt = .true. is now the default
196      - SEAICEadvAge  = .true. is now the default
197      - SEAICE_clipVelocities  = .false. is now the default
198                                         (as per J. Zhang's recommendation)
199      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
200        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
201      - seaice_growth: replace computation of UG by a simple copy from wspeed
202    
203    checkpoint61k
204    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
205      seaice_lsr: fixed a few metric terms,
206                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
207                  add more debugging diagnostics
208      seaice_evp: removed superfluous many metric terms of FV discretization
209                  of stress divergence
210                  affects lab_sea, lab_sea.hb87
211      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
212                  of stress divergence for non-evp solver
213                  (this part is not tested anywhere)
214      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
215                  they were effectively only half slip
216                  affects lab_sea.hb87
217      updated all relevant verification experiments (except lab_sea//output_adm.txt
218        which was left over, but fails at level 7 & 6)
219    
220    checkpoint61j
221    o pkg/seaice: turn a few hard wired parameters into run time parameters
222    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
223      time in seconds as promised by the usints in seaice_monitor and exf_monitor
224    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
225      that are not cubed-sphere grids
226    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
227    o pkg/ctrl:
228      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
229    o non-hydrostatic (calc_gw.F):
230      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
231      update output of exp. global_ocean.cs32x15.viscA4
232    o remove backward compatibility for thetaMin,phiMin
233      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
234    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
235      interpolated wind field not only for curvilineargrid=.true., but also
236      for a rotated grid (rotateGrid=.true.)
237    o pkg/exf: add capability to bypass interpolation for runoff
238      by setting yet another CPP-flag
239    o eesupp/src, B-grid exchange:
240      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
241    o autodiff
242      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
243      allows to switch to single-prec common blocks;
244      corresponding switch occurs in tamc.h, integer isbyte
245      TAF store directivs "byte" and "kind" seem equivalent;
246      Most tamc.h have been updated correspondingly.
247    
248    checkpoint61i
249    o autodiff:
250      fix autodiff_sore/_restore indices for obcs
251      (spotted by I. Hoteit, M. Mazloff)
252    o pkg/autodiff, pkg/ctrl:
253      Add flag to reduce all tapelev I/O to single-prec.
254      In data.ctrl set
255        doSinglePrecTapelev = .TRUE.
256    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
257      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
258    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
259      real fresh water flux (not yet)
260    o pkg/mdsio & rw:
261     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
262     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
263    o pkg/flt:
264     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
265       init_fixed & ini_varia.
266     - clean-up & simplify linear interpolation S/R:
267       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
268     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
269     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
270     - add vert. coordinate & horiz. indices to output files.
271     - change vertical position in initial condition, from index to depth [m].
272     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
273       (easier to get to a curvilinear grid) ; delX,delY no longer used.
274    o pkg/ggl90: a few modifications:
275     - fix bottom boundary condition, and interpolation of KappaE
276       near top and bottom
277     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
278     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
279     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
280    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
281      (maintain temporary backward compatibility, until next checkpoint)
282    
283    checkpoint61h
284    o pkg/diagnostics with "periodic averaging diagnostics":
285      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
286    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
287    o pkg/obcs: fix loop ranges for balancing code
288    o pkg/flt:
289     - improve criteria for finding which tile owns a float.
290     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
291    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
292      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
293      with ocean biogeo)
294    o pkg/flt:
295     - do some cleaning and fix the restart ;
296     - add output.txt in flt_example/results to get this pkg tested.
297    o genmake2: add an EXTENDED_SRC option and flag.
298       for now, cannot be turned on on command line (only through genmake_local)
299    o pkg/mdsio: read/write vector:
300     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
301     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
302       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
303     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
304      (drop to 4 digits matching for grad). But this test does not look very
305      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
306    
307    checkpoint61g
308    o pkg/flt:
309      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
310       + make OPTIONS file more standard.
311      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
312      - fix _BYTESWAPIO CPP-Flag
313      - standard reading of file-parameter "data.flt"
314      - fix argument list of S/R FLT_RESTART
315      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
316    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
317    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
318      a still unfixed compiler/optimization bug
319    
320    checkpoint61f
321    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
322      update results of global_ocean.cs32x15.icedyn test.
323    o move getcon.F from model/src to pkg/fizhi.
324    o pkg/exf: add parameter for extrapolation of temp up to the surface
325       and option to prevent negative evap (in bulk_largeyeager04 only).
326    o Prather Advection scheme: fix tracer conservation for divergent flow
327      (e.g., when using NonLin Free-Surface).
328    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
329    o gmredi (Visbeck-variable-K):
330     - add more parameters to Visbeck-variable-K.
331     - use a 5 points average for dSigmaR in Visbeck-K calculation
332       (more "homogenous": same stencil and same weights as in dSigmaH)
333     - update output of ideal_2D_oce experiment.
334    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
335      (#undef REAL4_IS_SLOW)
336     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
337       coordinate variable
338     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
339       (surface forcing fields), removes some of the functionality
340     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
341     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
342       probably not all: copy _RS surface flux fields to RL field before
343       calling DIAGNOSTICS_FILL
344     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
345       real*4 (CALL EXCH_*_RS) versions.
346     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
347       (generate new output).
348    
349    checkpoint61e
350    o gmredi (Visbeck-variable-K):
351      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
352      - change computation of Visbeck-K where Slope > Smax :        
353        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
354        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
355    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
356      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
357    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
358    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
359      does not become too large (to avoid precision problems in implicit-diffusion
360      solver); update ideal_2D_oce output.
361    o pkg ggl90:
362      - in ggl90_cal.F: compute only one set of visc/diff, used to
363        step forward TKE/T/S/momentum
364      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
365        have Prandlt =1)
366    o gmredi (fm07):
367      - add lower limit on Transition layer thickness + lower limit on 1/lambda
368      - allow to set few more params from data.gmredi
369    o pkg ggl90:
370          - add missing sqrt(2) factor in computation of mixing length
371            scale in ggl90_calc.F
372            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
373    
374    checkpoint61d
375    o adjoint modifs
376      - adapt to new field rhoInSitu
377      - allow to revert from StoreDynVars2D, StoreDynVars3D
378        to individual fields
379        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
380    o store 3-D (in-situ) density in commom block (DYNVARS.h)
381     - save 1 rho computation.
382     - no longer modify T & S inland when using down_slope pkg.
383    o gad_som : allow to switch to SOM advection for T & S without corresponding
384      pickup files (using new S/R: MDS_CHECK4FILE).
385    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
386      (for useSingleCpuIO to work in multi-threaded)
387    o pkg/shelfice:
388     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
389       with SHELFICEtopoFile in data.shelfice
390     - move code for reading ice shelf topography and modifying hFacC into separate
391       subroutines of the shelfice package
392     - separate initialisation of "fixed" and "variable" variables
393     - kTopC is not (yet) replaced by kSurfC, although this is possible
394    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
395    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
396      and rename:
397      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
398      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
399    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
400    
401    checkpoint61c
402    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
403      to add mass source/sink of fluid in the interior (3-D generalisation
404      of oceanic real-fresh water flux).
405    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
406    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
407    o new pkg: down_slope
408      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
409      - presently, modify T & S inland (dwnslp_calc_rho.F).
410        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
411      - implementation for ocean in P-coords not tested.
412      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
413    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
414      (to facilitate conversion of oceanic pkg to p-coordinate).
415    o change FIND_RHO to FIND_RHO_2D :
416      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
417    o new pkg: cheapaml
418    
419    checkpoint61b
420    o exch2:
421      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
422      - no longer depend on the order sequence (N,S,E,W).
423      - 3rd exchange no longer needed (tested with 24 tiles).
424      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
425      - exch_UV_A-grid readily available (but not yet tested).
426      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
427      (both are no longer needed) in exch_uv: no effect in forward run; but
428       get truncation error differences with adjoint exch.
429    o exch2:
430     - change index-bounds storage (moved from target to local tile,
431       more intuitive this way) ; rename/remove some variables.
432     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
433    
434    checkpoint61a
435    o exch2/matlab-topology-generator:
436      fix bug in index bounds for N-S internal exchange (hard to tell if this
437      had any effect on the solution).
438    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
439      is exceeded
440    o testreport: modify syntax of awk, so that it works also with
441      awk, and not only with nawk and gawk
442    
443    checkpoint61
444    o autodiff
445      Change default for TAF usage by removing argument '-nonew_arg'
446      This changes TAF subroutine argument list (ordering of active var.)
447      Omission of this flag leads to incompatibility w.r.t. TAMC
448      To restore TAMC-compatibility, need following modifs:
449      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
450      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
451      Tested TAF version is 1.9.22
452      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
453    
454    checkpoint60
455    --->>> This is the last checkpoint for which generating the adjoint
456    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
457    --->>> by default.
458    --->>> Future checkpoints will ommit this flag by default.
459    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
460    o pkg/grdchk: Add gradient check to etan0 perturbations.
461    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
462    o pkg/autodiff: more flexibility in zeroadj.
463      model/src: modifying do_oceanic_phys.F accordingly.
464    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
465    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
466      special setup of gmredi for which the adjoint is stable
467      enough for parameter optimization.
468    o bridging the gap between eddy stress and GM.
469      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
470          along with a change in CPP option (now ALLOW_EDDYPSI).
471      -> when using GM w/ GM_AdvForm:
472          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
473          is applied either in the tracer Eq. or in momentum Eq.
474          depending on data.gmredi (intro. GM_InMomAsStress).
475      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
476      The key modifications are in model/src/taueddy_external_forcing.F
477      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
478    
479    checkpoint59r
480    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
481      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
482      fix option to read coriolis(@ cell-corner) from files with CS-grid.
483    o pkg/mnc: add some attributes to standard 1D-coordinate variables
484    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
485      mass points, when using mnc for output
486      - add runtime parameter (missing_value, missing_value_int) to override
487        default (which is the value of getcon('UNDEF'))
488    o pkg/mnc: prepare mnc for the actual use of missing values with the
489      diagnostics package: small fix in mnc_cw_readwrite.template and more
490      initialisation of never used fields
491      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
492      versions
493    o pkg/thsice/thsice_ini_vars.F added default initial values so that
494      thermodynamics sea ice solver does not blow up when some initial fields
495      are missing.
496    o move from external_forcing_surf.F to ini_forcing.F
497      the p-coord. hack consisting in using pLoad to set phi0surf ;
498      update output of tutorial_global_oce_in_p (affected @ truncation level).
499    o Freshen up a bit hs94.1x64x5, notably:
500      remove rotationPeriod and tRef=5*0. (adjoint only), and add
501      exactConserv=.TRUE.
502    o pkg/generic_advdiff:
503      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
504      applies to files where Temperature & Salinity 2nd Order moments are used.
505    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
506      this uses a dynamically allocated internal state data structure
507      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
508      and requires a fortran 90 compiler
509    
510    checkpoint59q
511    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
512       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
513    o Refresh tutorial_global_oce_biogeo, notably:
514      - change bathymetry (put back seamounts in ACC, use hFacs)
515      - change EOS (POLY3 --> JMD95Z)
516      - use Bryan-Lewis vertical diffusivity
517      - use multidimensional advection
518      - remove old virtual virtual in dic pkg, now done through ptracer pkg
519      - change a couple of parameters in dic pkg
520    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
521    o pkg/obcs: change default to OBCSfixTopo = .true.,
522      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
523      - replace "debugMode" with "debugLevel .GE. debLevB"
524    o implementation of TAF directives for gchem,cfc,dic
525    o remove "exp5" (replaced by tutorial_deep_convection).
526    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
527      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
528      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
529      --> changes results in exp4, seaice_obcs
530    o tutorial_deep_convection :
531      update the set-up and increase resolution and domain size ; start
532      from pseudo initial conditions = output at t=120mn in order to see
533      something happening when running testreport.
534    o pkg/seaice: add os7mp as an advection scheme
535                  add check for advection schemes
536                  add a flag for restoring T and S underneath sea ice
537    o pkg/my82: add netcdf-support and diagnostics
538    o thsice pkg:
539      - Now hsMax limits snow height by turning it into ice following
540        flooding scheme (and now conserving energy)
541      - Slight rewriting of the formula in thsice_calc_thick.F
542      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
543      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
544    
545    checkpoint59p
546    o gchem / dic / cfc :
547      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
548      - add new parameter files: "data.dic" & "data.cfc" ;
549      - various re-arrangement in initialisation & header file ;
550      - fix tutorial_global_oce_biogeo for multi-threaded test.
551    o pkg/dic: test for "pickup_dic" file when restarting ;
552      if no pickup-file, can restart with a re-initialised pH (same as it did
553      before) providing pickupStrictlyMatch is set to False.
554    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
555      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
556    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
557      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
558    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
559     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
560       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
561    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
562       scheme to use for vorticty-term ;
563     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
564       (with default selectVortScheme, return to original discretisation)
565     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
566    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
567    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
568      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
569      also fix diagnostics VISCAHW & VISCA4W.
570    
571    checkpoint59o
572    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
573    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
574      move a few statemens out the main loop into separate loops
575    o pkg/shelfice:
576      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
577        (kg/m^2/s), does not break tests, because in verification/isomip,
578        rhoConstFresh=rhoConst (by accident)
579      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
580      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
581        new file model/src/seawater.F, so that they are available for all pkgs.
582      - convert potential temperature into in-situ temperature. This changes the
583        isomip tests => update tests
584    o add a flag writePickupAtEnd (default=true) to be able to suppress
585      writing a pickup at the last timestep
586    o tools/mpack-1.6 :
587      - disable automake (not working) and autoconf (not needed).
588      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
589        also cleaner with much less compilation warnings.
590    o pkg/profiles:
591      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
592      (for "less than 32 characters name" compiler requirement)
593    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
594      conditions that have a different sampling frequency than S/T/U/V obcs
595    o pkg/diagnostics (stats-diags):
596      - fix global Min/Max in case 1 processor get only empty tiles
597    o genmake2: replace (4 times)
598         make genmake_tc_1.o >> genmake_warnings 2>&1
599      with
600         COMM="$CC $CFLAGS -c genmake_tc_1.c"
601         echo $COMM >> genmake_warnings
602         $COMM >> genmake_warnings 2>&1
603      to make genmake2 always see the value of CC as specified in the optfile.
604    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
605      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
606      - modify verification advect_cs test to test SOM-advection on CS-grid.
607    o pkg/ctrl:
608      - Rewrite of ctrl_map_ini_ecco.F,
609        introducing a generic routine (ctrl_map_ini_gen.F).
610      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
611    
612    checkpoint59n
613    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
614      number in dedicate array "hdiag":
615      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
616        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
617      - many small changes (integer format) for large number of diagnostics
618      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
619        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
620    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
621      usingSphericalGrid, this allows to define the rotated grid coordinates
622      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
623      geographical coordinates according to the inverse of the rotation defined
624      by the Euler angles, so that Coriolis parameter and online-interpolation by
625      exf works with the geographical coordinates on XC/YC/XG/YG.
626      Naturally, this feature does not work with all packages, so some
627      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
628      profiles), because there the coordinates are assumed to be regular
629      spherical grid coordinates.
630    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
631      - introduce isopycnal diffusion coefficient control.
632    o tools/adjoint_options:
633      - additional control vector components.
634    o pkg/mnc: have mnc create marginally meaning full coordinate variables
635      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
636    o pkg/mypackage:
637      - add example of read/write pickup for state-var ;
638      - add entry points to the main code for state-vars diags & write-pickup.
639    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
640      transitions for useExfYearlyFields
641      - add new subroutine that determines the file to read from for
642        use*YearlyFields = .TRUE. and .FALSE.
643      - add a verification experiment to global_with_exf that tests
644        useExfYearlyFields with USE_EXF_INTERPOLATION defined
645    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
646      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
647      subroutines (which could be generated from a template, because they are
648      almost identical), for now they are included in obcs_prescribe_read.F for
649      simplicity
650    o pkg/exf:
651      - add a little more diagnostic to exf_interp_read (in analogy to
652        mds_read_field, can be turned off with debugLevel < debugLevA=1)
653      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
654        ugly but fast by unrolling short inner loops, inserting a unroll=8
655        directive in routine lagran, and splitting a loop and making do while the
656        outermost loop (the latter requires the intoduction of index arrays)
657    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
658    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
659      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
660    o verification/seaice_obcs: updated for restart test and latest options
661    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
662      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
663      for now this is only available for the C-grid code and also within
664      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
665    
666    checkpoint59m
667    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
668      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
669    o gad_som : fix flux output (& diagnostics) to have same units as other  
670      advection scheme fluxes (was previously multiplied by deltaT).  
671    o added verification/seaice_obcs both to test seaice open boundaries
672      and to provide an example matlab scrpt for generating them
673    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
674    o pkg/salt_plume: clean up salt_plume_frac.F to
675      remove redundancy in PlumeMethod 1 and 4
676    o pkg/kpp: added saltplume diagnostics
677    o pkg/obcs and pkg/seaice:
678      - do not set uice and vice to zero when OB*icefile are unspecified
679      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
680      - moved seaice tracer obcs after call to seaice_growth
681    o pkg/salt_plume: added various options for salt plume depth
682      criterion and for vertical distribution of the salt
683    
684    checkpoint59l
685    o pkg/ptracers: new version of ptracers pickup:
686      read meta file and write only fields which are needed to restart.
687      ( same logic as main pickup file ; also using pickupStrictlyMatch )
688    o pkg/seaice:
689      - add timescale for melting due to warm mixed layer as a means of
690        setting SEAICE_availHeatFrac more conveniently
691      - add a CPP-flag/runtime parameter check for flooding algorithm
692      - reformulated availHeat in seaice_growth.F to be independent of AREA
693    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
694      unit changes
695    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
696    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
697      SX vector computer.
698    o pkg/seaice:
699      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
700        seaice forcing fields can now be read only through pkg/exf
701      - removed some unused halos
702    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
703    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
704      or U/VICE from U/VWIND before computing U/VSTRESS
705    
706    checkpoint59k
707    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
708      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
709    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
710      all experiments pass when compile with un-initialised var. checking option.
711    o added pkg/salt_plume
712    o script to test restart (for now, in MITgcm_contrib/jmc_script)
713    o pkg/seaice: new read/write pickup version.
714      read meta file and write only fields which are needed to restart.
715      ( same logic as main pickup file ; also using pickupStrictlyMatch )
716    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
717    o lab_sea.hb87: modify the domain & update output.hb87.txt :
718      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
719      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
720      process. Fixed here by closing the domain at the Northern boundary.
721    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
722    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
723      a set of consecutive levels in/from a 3-D array.
724    o pkg/ptracers:
725      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
726      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
727    
728    checkpoint59j
729    o in pkgs: dic, obcs, offline, rbcs:
730      standard way to compute coeff. for time interpolation between 2 time reccords
731      which retains full precision (& make results less dependent on compiler).
732      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
733    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
734      packages instead of reading ice cover and wind speed separately
735    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
736     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
737      to allow to compile customized code before the update)
738    o cleaning-up:
739      - fix CPP instruction syntax in pkg/obcs
740      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
741        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
742      - fix some threads issue in IO parts.
743    o pkg/dic:
744      - add tons of "_d 0" (--> much better testreports !)
745       and then update outputs of tutorial_global_oce_biogeo
746    o pkg/mom_fluxform:
747      add a special version of momentum advection intended to conserve momentum
748      next to a bathymetry step or a coastline edge. (default = off = #undef)
749    o new read/write pickup version:
750      - for now, only implemented for main (mdsio) pickup file.
751      - write out only what is needed to restart; merge pickup_nh , pickup_ph
752        and main pickup together.
753      - read meta file; read only what is needed to restart; stop if a field
754        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
755        if it make sense (even if the restart is not perfect).
756      - if no meta file, assume that pickup to read corresponds exactly to
757        a pickup that would currently be written.
758      - read pickup written in the old format (until checkpoint59i) if it
759        recognizes an old meta file (no field-list).
760      - add a meta file in exp. which starts from a pickup: 2 cases:
761        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
762         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
763        b) a meta file describing the content of the associated pickup file
764         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
765    o pkg/mdsio & pkg/rw:
766      - new routine to read a meta file ; new set of routine to read
767        Multiple-fields file (with meta file).
768    o added open boundary conditions capability for seaice
769        HSNOW, HSALT, UICE, and VICE
770    
771    checkpoint59i
772    o adjoint:
773      * fix multiDimAdvection adjoint
774        (partial recomputation problem by TAF for fVerT(:,:,kDown)
775        and comlev1 size definition (maxpass vs. max. number of tracers)
776      * verification/global_ocean.90x45x15 adjoint now tests
777        NLFS and multiDimAdvection using DST3 (=30)
778      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
779    o pkg/kpp: add "_d 0" to real constant (if missing);
780      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
781      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
782    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
783      for internal parameters related to restart process (formerly from PARAMS.h)
784      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
785    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
786      as argument. (only atm2d & obcs write_pickup have not yet been updated)
787    o pkg/monitor:
788      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
789      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
790      - account for deep Atmosphere factor and density factor (anelastic)
791    o added open boundary conditions capability for seaice HEFF and AREA
792    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
793      thermodynamics
794      - requires a little reorganization, which affects the testreport results
795        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
796        so that now the conservative form is tested
797      - add a few comments
798    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
799    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
800    o add new diagnostics to seaice: advective, diffusive fluxes (only for
801      multidim-advection, for scheme 2 they are not filled) and transports,
802      thermodynamic growth rates
803    o change units of EmPmR (inside the code, + within coupling interface)
804      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
805      Affects results @ truncation level (cg2d match) and update output of
806       experiments: lab_sea(6), global_ocean.90x40x15(10),
807      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
808      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
809      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
810      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
811    
812    checkpoint59h
813    o pkg/exf:
814      - improve vectorization by moving if-statement out of loops in
815        exf_mapfields, exf_radiation
816      - exf_bulkformulae.F: introduce 2D fields and vectorize code
817    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
818    o testreport:
819      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
820        monitor & update offline_exf_seaice exp. output.
821      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
822    o pkg/seaice:
823      - bug fix in the evp solver: boundary conditions were affected be
824        masking of zMax/zMin (changes results)
825      - minor bug fix in boundary conditions in seaice_calc_strainrates
826        (changes results for no_slip)
827      - seaice_lsr.F: make interpolation of eta dependent on boundaries
828      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
829      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
830        stress formulation and no-slip boundary conditions
831    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
832      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
833    o pkg/seaice: a first HSALT time stepping equation has been checked in
834    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
835      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
836      without requiring DO-IF statements
837    o pkg/thsice:
838      use continuous power-law function for partition of energy between lateral
839      melting/freezing and thinning/thickening ; old code using step function
840      still available with #undef THSICE_FRACEN_POWERLAW
841      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
842    o testreport: change AD testing : check against results/output_adm.txt
843      using same scripts as for forward test.
844    
845    checkpoint59g
846    o adjoint testing: in preparation for changing testreport:
847      - output format: cost and grad written on separated lines
848      - ad output results in directory "results" (instead of "results_ad")
849    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
850    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
851    o pkg/ecco: allow user defined cost function contributions
852    o testreport:
853      Allow to choose (per experiment) the list of tested output variables
854       and the main variable (used to issue a pass/FAIL ) ;
855      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
856      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
857      Also modify printing of summary:
858       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
859       b) echo the list of tested variables in the individual summary.txt of
860          each experiment.
861    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
862      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
863      (but still depend on the tile decompostion of the domain).
864    o pkg/seaice: change a discretization detail to make the B-grid code
865      "more symmetric". This change is likely to remove all "ridges/leads" that
866      where quasi-aligned with the grid in B-grid solutions. It may also be
867      the solution to the stress coupling issues with the B-grid.
868    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
869      remove .cvsignore from input dir. (since testreport no longer run here).
870    o pkg/thsice:
871     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
872     - fix reshaping of sea-ice just after advection:
873       melt all the ice only if ice-volume is too small.
874     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
875       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
876     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
877    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
878      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
879    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
880      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
881      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
882      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
883      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
884      -> update output.txt
885    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
886     this affects truncation error: -> update output.txt of exp:
887      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
888      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
889    
890    checkpoint59f
891    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
892    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
893      a bounded range (in forward mode)
894    o pkg/ecco, ctrl, autodiff and mom_common:
895     internal parameter controls, completements of implementations
896    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
897    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
898      (not seem any difference in testing results).
899    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
900       at face corners.
901    o pkg/generic_advdiff:
902     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
903      loop range indices for computing vertical advection tendency
904      and do the calculation in the interior only (no overlap) ;
905      for now, only implemented for SOM advection (to save CPU time).
906     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
907    o exch2 adjoint
908      First set of changes:
909      - add exch2 hand-written adjoint templates
910      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
911        This will require cleanup in pkg/autodiff/*.F
912        (changed routines currently kept separate in verif. code/)
913      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
914        that used to hide exch2 or cubed-sphere specific code
915        (commented via 'cph-exch2')
916    o pkg/seaice
917      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
918    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
919       output of global_ocean.cs32x15.thsice .
920    
921    checkpoint59e
922    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
923      for B-grid vector (not yet tested) and C-grid vector (<- only used
924      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
925    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
926      (#ifdef ALLOW_SALT_PLUME)
927    o gather_2d/scatter_2d: removed halo regions
928    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
929      scheme and the corresponding test case (under front_relax dir). For now,
930      only available with Skew-flux form and not yet tested in realistic set-up.
931      adjoint: store directives updated, but gradient checks deteriorated,
932      so maybe GM/Redi adjoint is now broken.
933    o seaice adjoint
934      * add AREA, HEFF, HSNOW as control variable
935        (should not change lab_sea results)
936      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
937    o pkg/seaice:
938      * added computation of saltFlux in seaice_growth;
939        For time being, sea ice salinity is assumed constant
940        contribution of snow flooding to freshening of sea ice is neglected.
941        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
942        defaults to 0.0 in order to maintain backward compatibility.
943        Typical values for SEAICE_salinity are 4 to 10 g/kg.
944      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
945      * added SEAICE_availHeatFrac, which specifies fraction of surface level
946        heat content used to melt or grow ice
947      * commented out cap of HICE: it helps keep ice thinner
948      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
949      * applied OBCS T/S mask to HEFFM sea ice mask
950    
951    checkpoint59d
952    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
953     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
954     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
955    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
956     and change default value of parameter "GM_Small_Number";
957     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
958       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
959       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
960    o pkg/ecco: cost function when applying pkg/smooth to controls
961    o pkg/ctrl: add forcingPrecond run time parameter
962    o pkg/seaice:
963     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
964     - fix bug in metric terms of u-equation in LSR solver (implicit part),
965       changes verification/lab_sea
966     - rearrange implicit part of u-equation in LSR solver to make it easier to
967       read, understand, and debug. This causes changes at the truncation level.
968     - fix (serious) bug in the boundary conditions (sign error in the implicit
969       part) of the LSR solver. Changes all LSR results.
970     - fixed problem with HSNOW initialization to avoid thick snow when AREA
971       is initilized with small values - does not change lab_sea results.
972     - added HsnowFile initialization capability
973    o pkg/smooth: addition to model/src and pkg/ctrl so allow
974     initialization of pkg/smooth and application to control vector
975    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
976    o dependencies: pkg/profiles requires pkg/cal
977    o pkg/profiles:
978     - added option ALLOW_PROFILES_GENERICGRID
979         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
980         that interpolation information (grid points and coefficients) is provided
981         within the netcdf input files.
982         -> sample matlab scripts can be found in MITgcm_contrib/gael
983         that allow you to prepare netcdf input files.
984     - also modified: cleaner include statements, cleaner error print statements,
985       cleaner stops when error, and more tests of the netcdf input files consistency.
986    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
987    o pkg/seaice:
988     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
989       requires a new routine: seaice_diagnostics_fill.F
990     - make sure that seaice does not move if not forced (pressure replacement
991       method, Hibler and Ip, 1995), changes results
992     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
993     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
994       It is turned off by default (=-1.), because it changes the results.
995     - make it possible to read AREA from a file, too.
996    
997    checkpoint59c
998    o add S/R and diagnostics for oceanic mixed-layer depth
999    o move GMRedi call after all vertical mixing schemes (including KPP)
1000    o pkg/thsice:
1001     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1002      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1003    o pkg/obcs:
1004     - bug fix for balance code
1005    o pkg/seaice:
1006      - allow values of SEAICE_elasticParm > 1
1007      - add new parameter SEAICE_evpTauRelax as an alternative
1008        to SEAICE_elasticParm
1009      - make lsr boundary conditions free slip (by default), changes result
1010      - add code for no slip boundary conditions for lsr
1011      - set minimum of zeta to zero (and not 4e8) (changes results)
1012      - add a cap on AREA after advecting AREA if seaice_growth is not called
1013    o change calculation of Visbeck K:
1014      - no longer depend on tapering scheme; instead, compute slope (limited
1015        by GM_maxSlope). this is equivalent to what was comuted before with
1016        clipping or linear tappering.
1017      - fix vertical averaging (wrong by 1/2 level)
1018      - leave the old version (but will not be maintained) within
1019        #ifdef OLD_VISBECK_CALC / #endif
1020      - update output of exp. ideal_2D_oce
1021    o change error catch in calc_r_star to improve vectorization
1022    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1023      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1024    o adjoint:
1025      Re-organized adjoint checkpointing according to Matt Mazloff
1026      (but with modifs/completions/cleanups)
1027      Storing is now bundled into large arrays to optimized I/O
1028      (and second step in cleanup of the_main_loop)
1029    
1030    checkpoint59b
1031    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1032      - export/import (between ocean & coupler) fields needed for ocean DIC.
1033    o pkg/seaice:
1034      - get rid of three more exchanges seaice_calc_viscosities (required
1035        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1036      - bug fix in seaice_ocean_stress (update of lab_sea required)
1037      - reduce loop boundaries to necessary minimum also in seaice_evp
1038      - go back to the old way of computing deltaC/Z as the adjoint likes that
1039        better
1040    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1041      passive tracer to an Age Tracer) + update output.txt
1042    o pkg/exf:
1043      - implement A-grid / C-grid selection for wind-stress input files.
1044      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1045      for now, in exf_bulk_largeyeager04.F only :
1046      - change implementation for case where windspeed + 2. components wind-stress
1047        are read-in. AND use rhoConstFresh to convert evap.
1048    o pkg/seaice:
1049      - use correct EXCH_UV for wind-forcing (on A-grid).
1050      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1051        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1052    o pkg/exf:
1053      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1054      EXF_INTERPOLATION:
1055      - merge global_with_exf/code version of exf_interp_read.F
1056        to the main code ;
1057      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1058        reading the file ; Important: This options needs to be defined to recover
1059        previous code.
1060        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1061      - no longer loose real*8 precision along the way when using exf_iprec=64.
1062    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1063      - change discretisation of evp-solver in order to avoid another exchange
1064        (changes lab_sea) and clean up a little
1065      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1066        help the adjoint (this also changes the results slightly)
1067      - add a few "_d 0" where they had been missing in seaice_evp.F
1068      - cleaning up: remove unused seaice_calc_rhs.F
1069    o pkg/exf: some cleaning-up:
1070      - change various "constants" into runtime parameters
1071      - cleaned-up Large&Yeager04 routine which should eventually
1072        replace exf_bulkformulae.F (changed names of S/R and CPP)
1073        and merged various ALLOW_ATM_WIND options
1074     only used with thsice pkg (in thsice_get_exf.F):
1075      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1076        which are used when useStabilityFct_overIce=TRUE (= the default)
1077      - change default values of ice & snow emissivity and scale downward LW
1078        by ice & snow emissivity.
1079    o pkg/thsice:
1080     fix few little problems, in thsice_calc_thickn.F:
1081      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1082      - melt only laterally if hIce < hThinIce (as the comments say)
1083      and in thsice_extend.F:
1084      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1085      - start to form ice as soon as the minimum ice-volume is reachable.
1086     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1087      and cpl_aim+ocn
1088    o pkg/kpp
1089     - move computation of surface related input fields to KPP into a new
1090       subroutine kpp_forcing_surf.F
1091     - remove wrong (within bi,bj loops) EXCH calls.
1092     - little cleaning (add argument myThid in last position, cvs header ...)
1093     - for now, fix conservation problem by exchanging KPPviscAz (may not
1094       be the best fix)
1095    o pkg/seaice
1096     - check for inconsistent evp parameter/cpp-flag combination
1097     - remove leftover errIO flat for obsolete name list error handling
1098    o OpenAD
1099     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1100    
1101    checkpoint59a
1102    o pkg/seaice: some parameter clarifications and a little bit of clean up
1103    o pkg/thsice: rename run-time parameters:
1104       himin       -> hIceMin
1105       himin0      -> hThinIce
1106       hihig       -> hThickIce
1107       i0          -> i0swFrac
1108       transCoef   -> bMeltCoef
1109       frac_energy -> fracMelting
1110      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1111       with default values (for now) that do not change the results.
1112      remove old version of thsice vars advection in pkg/seaice.
1113    o in FFIELDS.h:
1114      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1115      - make pLoad & sIceLoad always available (but still only used if
1116         ATMOSPHERIC_LOADING is #define).
1117    o pkg/kpp: replaced _KPP_RL with _RL
1118    o bug fixes for vertical diffusivity computations when both KPP and
1119        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1120        are no longer updating the vertical diffusivity array
1121        (passed as argument) but are (re-) setting those arrays.
1122    o pkg/seaice: fix bug in evp solver, while doing that
1123      - change (improve?) discretization of stress computations for both
1124        cgrid-lsr and evp solver
1125      - add a new routine to compute strain rates
1126      - the above changes lab_sea results
1127      - add no slip conditions for evp solver (off by default), lsr-version
1128        may follow
1129      - fix exchange for shear at Z-points (does not change lab_sea)
1130      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1131        (to force the user to pick a time step since there is not "safe" way
1132        of choosing it)
1133      - add principal stress diagnostics
1134      - rearrange fields for evp a little to avoid having to call a: too many
1135        exchanges and b: exchanges for stress trensor components which we do
1136        not have.
1137      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1138        of evp, complete rewrite for lsr case (latter is does not yet work
1139        in all cases)
1140    o pkg/kpp: add code to have mixing in shelf ice caverns
1141      - add myThid to all kpp routines (long overdue)
1142    
1143    checkpoint59
1144    o pkg/exf:
1145      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1146        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1147      - move exf header files from lower_case.h to UPPER_CASE.h ;
1148        add missing cvs Header & Name
1149      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1150      - add namelist param. selectStressGridPosition, exf_monFreq
1151      - retire many _CLIM routines, and remove data.exf_clim
1152        + params moved to data.exf
1153        + climsst, climsss now handled by exf_set_gen, i.e.
1154          climss?period=0 refers to constant field,
1155          climss?period=-12 to monthly forcing
1156      - split up namelists in data.exf
1157    o pkg/seaice:
1158      - remove seaice_exch and seaice_exch_uv
1159      - remove superfluous exchange of theta
1160      - add myThid to seaice_budget_ocean/ice
1161      - add new interface for atmospheric wind forcing (C-grid only)
1162        + new routine
1163        + two new field (taux, tauy for stress over ice)
1164        + removed one global field (DAIRN) for C-grid case only
1165    o pkg/thsise
1166      - 2nd set of modifs for thsice adjoint in conjunction with exf
1167    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1168    
1169    checkpoint58y_post
1170    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1171      vertical diffusivity, similar to that in MOM4; turned on using
1172      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1173      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1174    o Added capability for 3D specification of background vertical diffusion
1175      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1176      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1177      "data" file that contains the 3D vertical diffusivity coefficients.
1178    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1179      - add code within pkg thsice to advect & diffuse sea-ice fields
1180      similar to (and will replace) what has been added in  seaice_advdiff.F,
1181      but: - conserving Mass, Heat & Salt.
1182           - better when using non-linear advection scheme (not yet fully tested)
1183           - can also be used in atmospheric set-up (for now, only the diffusion).
1184    
1185    checkpoint58x_post
1186    o IO option for global-file compact format:
1187      - add options when generating topology (utils/exch2/matlab-topology-generator)
1188      - add I/O capability (pkg/mdsio).
1189      - adapt utils/matlab/rdmds.m to read this format.
1190      for now long-line format not yet supported by pkg/mdsio (& exch2).
1191    o shelfice: add a few diagnostics
1192    
1193    checkpoint58w_post
1194    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1195      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1196      (and replace horiVertRatio in NH code).
1197      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1198                         and tutorial_plume_on_slope (sensitive to truncation)
1199    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1200      directly to drive seaice model (C-grid only)
1201    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1202     - reintroduce computation of wind from stress,
1203     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1204       mass points to avoid tau = 0
1205     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1206    o rdmnc.m: make it work with "global" files created with gluemnc
1207    o rdmnc.m : some improvements in dealing with singleton dimension
1208      (tested on all testreport mnc output files).
1209    o genmake2: disable pkg/profiles if netcdf test fails.
1210    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1211    o move call to cal_readparms up to make calendar parameters/variable available
1212      to all packages
1213    
1214    checkpoint58v_post
1215    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1216      useDynP_inEos_Zc tested.
1217    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1218    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1219      and portions thereof.  See read_cs.txt for description and examples.
1220    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1221      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1222      following the great-circle arc between those 2 points.
1223    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1224      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1225    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1226     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1227     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1228     - still needs work (not working with some options ; efficiency to improve)
1229       and serious testing.
1230     - use this scheme for temperature & salinity in 2 advection test exp.:
1231       advect_xy & advect_xz, respectively.
1232    
1233    checkpoint58u_post
1234    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1235    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1236    o testreport: add option "-skipdir" to skip some test.
1237    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1238      momentum calculation.
1239    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1240    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1241      remove checkpoint.F and the_correction_step.F (no longer used);
1242      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1243    o add option (linFSConserveTr) to correct for tracer source/sink due to
1244      Linear Free surface
1245    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1246    o pkg/thsice: fix reading mnc-pickups
1247    
1248    checkpoint58t_post
1249    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1250    o pkg/mdsio:
1251     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1252       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1253       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1254     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1255     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1256       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1257     - new S/R (to replace MDSWRITEMETA), which allows to write more
1258       informations (variable names, time ...) to meta files.
1259     - modify rdmds.m to give back the meta file content.
1260    o pkg/diagnostics: change vertical interpolation to be safer, and more
1261       flexible (define p-levels to interpolate to in data.diagnostics);
1262      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1263       diagnostic pointer.
1264    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1265    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1266    o fix multi-category seaice:
1267     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1268       SEAICE_MULTICATEGORY
1269     - fix short wave heat flux
1270    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1271       and allow to use EVP solver. Change forward lab_sea: test both EVP
1272       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1273    o Initial check-in of lab_sea adjoint
1274      (very similar to natl_box_adjoint/code_seaice)
1275      * used C-grid and EVP solver
1276      * used KPP, GM/Redi
1277      * uses inAdExact=.TRUE.
1278      * gradient checks fail for both ADM and TLM
1279        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1280        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1281        issue is related to forward mismatch between g77 an ifort
1282    o pkg/seaice: overhaul of thermodynamics
1283     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1284     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1285     - move a few global fields out of SEAICE.h into seaice_growth.F and
1286       make them 2D (FICE/QNETO/ ...)
1287     - remove FO (it is the same as QNETO)
1288     - introduce a few local fields to avoid modifying external fields such
1289       as atemp, etc.
1290    
1291    checkpoint58s_post
1292    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1293      changed exf_set_gen.F so that
1294        genperiod=0 means input file is one time-constant field and
1295        genperiod=-12 means input file contains 12 monthly means
1296    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1297      this affects truncation error ; generate new output file for exp. which
1298      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1299        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1300        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1301        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1302        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1303        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1304    o start implementation of deep-atmosphere and anelastic formulation
1305    o verification: remove 2nd copy of input files and use script "prepare_run"
1306      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1307    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1308    o profiles: fix for multithreaded case
1309    
1310    o diagnostics: rename few diags:
1311      s/'PRESSURE'/'RCENTER '/g
1312      s/'TICE    '/'oceFreez'/g
1313      s/'TAUX    '/'oceTAUX '/g
1314      s/'TAUY    '/'oceTAUY '/g
1315      s/'SWFLUX  '/'oceQsw  '/g
1316      s/DIFx/DFxE/g
1317      s/DIFy/DFyE/g
1318      and add few ocean-forcing diagnostics:
1319      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1320    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1321      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1322      as actual snow thickness.  It now refers everywhere to effective snow
1323      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1324    
1325    checkpoint58r_post
1326    o modifications to pkg/seaice/growth.F, which change results of
1327      lab_sea experiment: fixes pertain to melting snow over open water, to
1328      masking EVAP under sea ice, and to using the correct AREA variable for
1329      computations of EVAP, PRECIP, HSNOW, and GHEFF
1330    o add ability to read bathy, salt, and theta using MNC (off by def)
1331    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1332      both are turned off by default and do no change any results
1333    o seaice advection with pkg/thsice: a step toward the use of non-linear
1334      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1335    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1336      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1337      in natl_box (affects results @ truncation level: update output.txt)
1338    o multi-threading and IO:
1339      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1340      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1341        (needed to work with SingleCpuIO): tested in all verif. exp.
1342    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1343      affects the results (but none of the verification test uses this scheme).
1344    o Adding some pkg/diagnostics capability to pkg/seaice
1345      (will certainly be subject to changes)
1346    o ctrl: adding new control variables:
1347      lwflux, lwdown, evap, snowprecip, apressure, runoff
1348    
1349    checkpoint58q_post
1350    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1351      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1352      high_res_cube configuration by 4% on Columbia.
1353    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1354      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1355      dynamical allocation (seems to work in multi-threaded).
1356    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1357      single CPU io) so that TAF does not have to see EESUPPORT.h
1358    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1359    
1360    checkpoint58p_post
1361    o obcs: stop if obcs is used with useCDscheme = .true.
1362    o shelfice:
1363     - fix a sign error so that no slip at shelfice interface works
1364     - remove stop for combination non-hydrostatic code and shelfice. That does
1365       not mean, that the results are correct, but at least they are numerically
1366       stable
1367    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1368    o added adjoint exch routined for all exch*3d* routines
1369      and updated flow directives
1370    
1371    checkpoint58o_post
1372    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1373      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1374    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1375      and clean-up reading/writing of pickup files.
1376    o fix local version of read/write pickup (NH part) in rotating_tank/code
1377    o simplify EXCH interface:
1378     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1379     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1380    o added the regrid package
1381    o shelfice:
1382     - add a simple boundary layer scheme to reduce noise
1383     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1384    
1385    checkpoint58n_post
1386    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1387       local variable (not in common block).
1388    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1389      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1390      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1391        to work with SingleCpuIO.
1392    o add "_d 0" to real constant of pkg/cfc subroutines ;
1393       update exp. cfc_exemple & tutorial_cfc_offline output files.
1394    o multi-threading and IO:
1395      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1396        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1397      - barrier before and after reading.
1398      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1399      - avoid using MDS_WRITELOCAL for LAND pkg output.
1400      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1401        common-block variables ; Allows multi-threading with master-thread IO.
1402    o change default MAX_NO_THREADS from 32 to 4 ;
1403      and stop cleanly when MAX_NO_THREADS is too small.
1404    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1405    
1406    checkpoint58m_post
1407    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1408       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1409    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1410       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1411       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1412    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1413        add MITgcm_tutorials (= code + all the tutorials)
1414    o ecco, option to compute cost for total ssh (mean+anom)
1415    o consistent with addition of ptracer and ssh in pkg/profiles
1416    o profiles: adding ptracer and ssh
1417    o testreport: change multi-test output-file name
1418      (from output.txt.{name} to output.{name}.txt)
1419    o profiles: now ok for mutli-tiles case
1420    o seaice: add 4 parameters for different advection schemes for area,
1421      (effective) seaice thickness, enthalphy, and snow height. Their default
1422      is the standard parameter SEAICEadvScheme
1423    o calc_gw:
1424     - add cosFacU in zonal viscous flux (harmonic.visc.).
1425     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1426       of tutorial_plume_on_slope.
1427    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1428    o calc_gw: true flux-form, account for horizontal grid spacing.
1429      update rotating_tank results, but not plume_on_slope (affected at
1430      truncation level, 11 digits).
1431    
1432    checkpoint58l_post
1433    o calc_gw:
1434     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1435     - remove side-drag for now (need to fix it); update plume_on_slope results.
1436     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1437    o commit code to make SST/SSS weights spatially variable
1438      (based on either variable in-situ or variable initial T/S weights)
1439    o pkg/ecco:
1440      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1441        now based on horizontally varying weights wthetaLev, wsaltLev
1442      * cost_averagesflags now returns year indices in addition to day, month
1443      * sflux balance is performed on annual basis
1444        (sflxumm, sfluxmm2, bal_sfluxmm)
1445      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1446        including separate counting and multipliers
1447    o pkg/rbcs
1448      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1449    
1450    checkpoint58k_post
1451    o testreport:
1452     - always build in dir. "build" (if not there, mkdir build instead of building
1453       & running in input)
1454     - run in dir run (if it exists), in build otherwise.
1455     - call prepare_run (if input/prepare_run exists)
1456     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1457    o pkg/exf modifications to interpolation and rotation routines for more
1458       reasonable treatment of North Pole singularity: for tracers North Pole
1459       value is set to northernmost zonal-mean value, for zonal velocity it is
1460       set to zero, and for meridional velocity it is set to northernmost value.
1461    o pkg/exf/exf_check_range.F
1462     - add tile index to diagnostics and move stop statement to the very
1463       end of the routine.
1464    o pkg/diagnostics: (diagnostics_main_init.F)
1465      define title of isomorphic variables according to the current config.
1466    o pkg/thsice with pkg/seaice dynamics:
1467    - fix domain of computation (interior only, required for exf) and do exchanges
1468    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1469    o towards a standard way of dealing with multi-threading in MONITOR
1470      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1471    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1472       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1473    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1474    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1475    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1476       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1477    o tracer advection:
1478     - clean-up and simplify calc_common_factors.F
1479     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1480       advection subroutine (but still not used within DST advection S/R)
1481    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1482    
1483    checkpoint58j_post
1484    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1485      from file (collects calls previously in FORWARD_STEP)
1486    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1487    o adjoint store dir. adjusted accordingly
1488    o genmake2
1489      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1490    
1491    checkpoint58i_post
1492    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1493      on wind stress (SEAICEstressFactor defaults to 1.)
1494    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1495      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1496    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1497      on CS-grid: no longer loosing mass.
1498    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1499    o pkg/ggl90: fix sloppy output and fix a bug
1500    o pkg/seaice: added SEAICEuseEVPpickup parameter
1501      - Set to false in order to start EVP solver with
1502        non-EVP pickup files when using SEAICEuseEVP
1503      - fix sign error in diffusion in seaice_calc_rhs
1504    
1505    checkpoint58h_post
1506    * Modifications for bottom topography control
1507      o replace hFacC by _hFacC at various places
1508      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1509      o add non-self-adjoint cg2d_nsa
1510      o update autodiff support routines
1511      o re-initialise hfac after ctrl_depth_ini
1512      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1513    * Adding verification for 5x5 box (4-layer) bottom topography control
1514    
1515    checkpoint58g_post
1516    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1517       used for mean seasonal cycle, mean diurnal cycle); add an example
1518       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1519    o pkg/ggl90:
1520      - add parameter (minimum surface kinetic energy)
1521      - fix bug (avoiding division by zero)
1522    o couple pkg/thsice to pkg/seaice:
1523      - modify advection in seaice to accomodate new scalar fields to be advected
1524      - only muliDimAdection scheme work with seaice/thsice
1525      - mapping of thsice-variables to seaice-variables, back and forth
1526      - does not break the verification experiments, but does not give the
1527        desired results either
1528    o pkg/seaice
1529      - make (default) second order advection a bit less confusing?
1530    
1531    checkpoint58f_post
1532    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1533      to pkg/seaice):
1534      - new routines thsice_map_exf and thsice_get_exf provide the interface
1535      - add an additional formal parameter to thsice_solve4temp
1536    o pkg/exf:
1537      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1538      - correct Stefan-Boltzmann constant
1539      - new parameter for longwave surface emittance
1540      - separate some stuff from exf_bulkformulae into new routines  
1541        exf_radiation, exf_wind
1542      - add new parameters and constants: longwave emissivity for ocean, ice
1543        and snow, evaporation parameters over ice
1544      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1545        either wind from stress or stress from wind
1546    o pkg/thSIce:
1547    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1548    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1549       and THSICE_CALC_THICKN
1550    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1551    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1552      to make debugging easier.
1553    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1554    o pkg/bulk_force:
1555      - clean-up comments and parameters ;
1556      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1557    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1558      generate new output for test-experiment: aim.5l_cs.thSI
1559    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1560      testreport accordingly
1561    
1562    checkpoint58e_post
1563    o SEAICE_CGRID adjoint done
1564    o R_STAR adjoint implemented.
1565      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1566      * need to sort out init. of h0facc, etc.
1567    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1568      to be able to use it in pure forward.
1569    
1570    checkpoint58d_post
1571    o upgrade simple test-experiment to tutorial example:
1572     step.1: duplicate the experiment and (step.2) will remove the old copy.
1573      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1574      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1575      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1576      tutorial_global_oce_biogeo    <- copy of dic_example
1577      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1578      tutorial_plume_on_slope       <- copy of plume_on_slope
1579      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1580      tutorial_global_oce_optim     <- empty for now (David ?)
1581      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1582     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1583    o correct a sign problem in cost_scat.F
1584    o obcs and ptracers: fix boundary conditions for advections schemes
1585      with larger stencil
1586    o thsice adjoint: start
1587    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1588      completeness
1589    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1590      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1591    o ptracers adjoint:
1592      * avoid extensive recomputatations
1593      * fix missing re-init. of gptr (missed by TAF)
1594    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1595      me to turn off the excessive output to STDOUT that this package produces
1596    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1597      and add those terms in Vector-Invariant formulation.
1598    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1599      if the control period (xx_hfluxperiod etc) is 0
1600    o in profiles pkg, clean routines and fix details
1601    o in ecco pkg, reading ssh data:
1602      fix problem in case the model does not start at iter0=0
1603    o fix mnc-pickup/restart for ptracers
1604    o new package prifiles:
1605      code to compute profile-based cost by Gael Forget
1606      (modifs in ecco, ctrl, autodiff)
1607    o Benign bug fix in initialization (spotted by M. Mazloff) of
1608      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1609    
1610    checkpoint58c_post
1611    o adjoint: finish NLFS adjoint and provide reference output in
1612      verification/global_ocean.90x40x15/results_ad_nlfs
1613    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1614      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1615      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1616      with SEAICE_CGRID defined.
1617    o move calendarDumps from "data" to "data.cal" and clean-up the code
1618      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1619    o add useEXF & useCAL flags (for now, set in hard-coded way)
1620    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1621      (were missing in NH mode, and wrong in quasihydrostatic mode).
1622      waiting for Chris updated version of calc_gw to add those CALLs.
1623    o fix bug in quasihydrostatic S/R ;
1624      add a test for this option: global_ocean.90x40x15.qshyd
1625    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1626      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1627    o add on/off flag useOffLine for package OFFLINE
1628    o seaice:
1629      - modify advection so that it works also on the C-grid
1630      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1631        problem in multi-tile runs with C-grid
1632      - add flags for clipping ice velocities and/or masking solver forcing
1633      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1634        C-grid solver
1635      - added a few comments to seaice_diffusion.F
1636      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1637        are now exclusive)
1638      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1639        required re-ordering the code a little:
1640       + make DAIRN global variable (defined in SEAICE)
1641       + move computation of the viscosities eta and zeta into a new separate
1642         routine (because I need to recompute them in seaice_ocean_stress.F)
1643    
1644    checkpoint58b_post
1645    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1646      update output.txt of exp. aim.5l_cs.thSI
1647    o various mnc cleanups and improvements:
1648      + shrink lookup tables by factor of ~4
1649      + better error reporting when running out of lookup space
1650      + able to handle longer path/file names (up to 500 chars)
1651    o adjoint:
1652      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1653      - TBD: "hidden" mom_vecinv recomp. in dynamics
1654    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1655     (allow to differentiate between forcing components using new integer flags:
1656      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1657     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1658    o ecco
1659      - enable trend removal from SSH anomaly obs.
1660    o adjoint
1661      - a fix for PmEpR when #undef EXACT_CONSERV
1662      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1663      - try to fix "hidden" recomp. in forward_step for NLFS
1664        (NLFS seems broken sometimes after I checked it in)
1665    o seaice:
1666     - add c-grid version of the dynamic solver:
1667       + three new routines that are the c-grid substitute lsr, dynsolver
1668         and ostres
1669       + put a few fields that were local to dynsolver into global common
1670         blocks, so that I can move the computation of stresses etc into
1671         seaice_lsr (saves coding but may break the adjoint).
1672     - replace more hardwired parameters by runtime parameters
1673     - add ice masks that mask the rhs of the implicit solvers where there
1674       is no ice (commented out in seaice_dynsolver, because i am not sure
1675       if this works properly), eventually this should replace the clipping
1676       of ice velocities in seaice_dynsolver to +/-40cm/s.
1677    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1678      include it only where its needed
1679    o move balancing of fluxes before the call of external_forcing_surf
1680    o seaice:
1681      - correct units of turning angles (now they are really in degrees)
1682      - move computation of GWATX/Y out of main routine into dynsolver
1683      - initialize GWATX/Y in seaice_init
1684    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1685      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1686    o seaice: add runtime flags for turning angles (default to zero)
1687    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1688      and trend from exf forcing and ctrl control adjustments
1689    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1690      (since checkpoint57x_post)
1691    o change the default rotation period to 86164.s = the Earth rotation
1692    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1693      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1694    o seaice advection: add code for choosing between the default (2nd order
1695      central differences) and multiDim advection schemes provided by
1696      pkg/generic_advdiff
1697    o seaice:
1698      - removed all references to SEAICE_GRID.h fields from
1699        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1700        (cubed-sphere configuration will change a little)
1701      - grid computations in seaice_init are obsolete now.
1702      - cleaned up code a little so that is easier to read (hopefully).
1703      - added new (better?) discretizations of default advection and diffusion
1704        (turn on with SEAICEuseFluxForm)
1705      - replace 1 in 3d global fields by kSurface in growth.F
1706      
1707    checkpoint58a_post
1708    o seaice:
1709      - bug fix in advect.F
1710    o shelfice:
1711      - separate shelfice load anomaly from pload (breaks with time
1712        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1713        Its default is 0., but it may be computed more cleverly from (unknown)
1714        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1715        done offline. A good approximation of the pressure load anomaly is
1716        necessary to avoid large initial adjustment processes underneath
1717        deep-reaching shelfice.
1718      - small fix in ISOMIP shelfice_thermodynamics
1719      - add more sophisticated thermodynamics of Hellmer (1989), this is
1720        now the default
1721      - give a few constants more intuitive names
1722    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1723      if bulk formulae are used in long integration (especially EmPmR). Turn
1724      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1725      if balancePrintMean, the imbalance that is substracted is printed to
1726      STDOUT.
1727    o fix bug (typo) in obcs_apply_eta.F
1728    o add a new package shelfice which enables us to model the circulation
1729      underneath shelf-ice with draughts of hundreds of meters.
1730     - works
1731     - to do: + include improved thermodynamics
1732              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1733                instead of new field kTopC
1734              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1735                instead of new field R_shelfIce and new code in ini_depth.F
1736                and ini_mask_etc.F?
1737              + adjust vertical mixing schemes?
1738    o seaice pkg:
1739     - add a cpp-flag to include a simple formula for a salinity dependent
1740       freezing point of sea water at the surface
1741     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1742       meridional stresses are now different (and hopefully correct)
1743    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1744       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1745       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1746    o pkg/diagnostics: add options and parameters for regional-statistics
1747       diagnostics ; define regions by reading a region-mask from a file
1748       (might add other options later)
1749    o pkg/bulk_force:
1750     - add option and parameters to use AIM surface-flux formulae.
1751     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1752       others forcing fields (defined in PARM05, parameter file "data") are loaded
1753       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1754     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1755     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1756     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1757       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1758     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1759    
1760    checkpoint58
1761    o add "--embed-source" option to genmake2 which, when the supporting
1762      tools can be compiled (as determined by genmake2) will turn on the
1763      embed_files package which then embeds the entire MITgcm source code
1764      (*.[fFhc] + Makefile) used for the build within the executable
1765      - requested by CNH but off by default
1766      - adds a paltry <9MB to the mitgcmuv executable in most cases
1767      - only writes the output when useEMBEDSRC in eedata is true
1768    o clean up 3-dim. relaxation codes:
1769      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1770      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1771      * Thanks to Tom Haine for testing!
1772    
1773  checkpoint57z_post  checkpoint57z_post
1774  o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):  o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1775    affects output (@ truncation level) of exp. plume_on_slope ; updated.    affects output (@ truncation level) of exp. plume_on_slope ; updated.
# Line 834  o add two new packages Line 2600  o add two new packages
2600    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2601    - these scheme operate in a similar manner as KPP (without ghat, of    - these scheme operate in a similar manner as KPP (without ghat, of
2602      course), however there is only one diffusivity that is used for both      course), however there is only one diffusivity that is used for both
2603      temperature and salinity (and passive tracers)ç      temperature and salinity (and passive tracers)
2604  o add offline package  o add offline package
2605  o add "verification/dic_example" which contains a dic-gchem-ptracer setup  o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2606    provided by Stephanie Dutkiewicz    provided by Stephanie Dutkiewicz

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