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revision 1.126 by jmc, Thu Jan 30 00:12:34 2003 UTC revision 1.1161 by dfer, Thu Sep 24 20:32:36 2009 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/aim/thsice:
8     -Add capacity to read a Q-Flux to be applied in slab-mixed layer thsice_slab_ocean.F
9      (works as SST restoring)
10    o pkg/thsice:
11     -add specific parameter for salt restoring in slab mixed-layer
12       (by default equal to the temperature restoring)
13    
14    checkpoint61v
15    o pkg/kpp:
16     -add double diffusive contributions as a hack, turned off by default
17      for now, and the code can be excluded with a CPP-flag
18      EXCLUDE_KPP_DOUBLEDIFF just as EXCLUDE_KPP_SHEAR_MIX
19     -add a verification experiments to "vermix" to test this code
20    o pkg/mom_common:
21      Move computation of length scales to mom_init_fixed.F (avoid recomputation
22      at each time-steps*levels).
23    o pkg/layers:
24      Created a new package for computing volume fluxes in temperature or
25      [not yet implemented] density layers, e.g. for calculating residual
26      overturning circulations.
27    o pkg/diagnostics:
28      implement a RS type version for the set of DIAGNOSTICS-FILL subroutines
29    o fix few RS/RL type mismatch (check with ifort 11.1 "-warn all" option)
30    o pkg/mdsio (& pkg/rw): rework high level S/R interface:
31      To avoid mixing type (RS/RL) of input/output array argument,
32      replace single mixed-type array with a pair from each type (RS/RL).
33    o setting pickupSuff force to start from a pickup (even if nIter0=0): this
34      is now implemented for all pkgs (previously only done for the main pickup)
35    
36    checkpoint61u
37    o pkg/obcs:
38      - change OB?eta from _RS to _RL and put them into a separate commen block
39      - add code to read OB?eta from a file via obcs_prescribe_read: the code
40        compiles and does not destroy any other experiments, the data is read
41        properly, but the code is not tested in actual applications
42    o ini_mnc_vars.F: if available (ALLOW_CAL), use startTime_1 and 2 to
43      create a meaningful unit attribute for the time coordinate variable
44    o pkg/ebm: add plenty of missing "_d 0" ;
45       update results of experiment global_ocean_ebm (fwd + adjoint tests)
46      Notes: several pieces of code only works for (very) specific set up
47       (domain size, lat range, etc ...); should be documented & stop if one
48       of those assumptions is not meet.
49    o pkg/seaice: add missing "_d 0" in HSNOW initialisation
50       update results of experiments: lab_sea (3 fwd tests + 2 adjoint tests)
51          and offline_exf_seaice (seaicetd + adjoint).
52    o add missing "_d 0" in ShortWave flux penetration (S/R SWFRAC):
53       update results of experiments: lab_sea (4 fwd tests + 3 adjoint),
54        seaice_obcs, global_ocean.cs32x15 (icedyn & thsice) and natl_box (x2).
55    o few changes to pass when compiling with strick checking of arguments
56       across S/R (allow to find few bugs in S/R calls).
57    o pkg/seaice:
58     - seaice_evp: move if-statement out of loop (TEM) at the cost of 11 new
59       2d-fields, for slightly better performance
60    
61    checkpoint61t
62    o pkg/seaice:
63     - remove unused variables in seaice_evp
64     - reduce number of SQRT in seaice_evp and seaice_calc_viscosities
65    o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
66       named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
67       each processor opens a different file (a fix from Matt).
68    o cg2d:
69       use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
70       this reduces number of EXCH calls by 2 when using exch2.
71       For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
72       directives and missing simple EXCH (exch_s3d_rx) adjoint code.
73    o pkg/thsice:
74       add code for Near Infra-Red albedo (from Jeff)
75       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
76    o ini_model_io:
77       move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
78       MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
79       to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
80    
81    checkpoint61s
82    o pkg/exch2 (exch2_rxN_cube*):
83       remove last BARRIER (no need to synchronise after getting data from shared
84       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
85    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
86      and generate new output (for the 2 tests) using default rotationPeriod.
87    o pkg/exch2:
88      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
89        (was already the case with AUTODIFF_EXCH2 defined)
90      - add bj in exch2 arrays and S/R.
91      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
92        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
93    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
94      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
95        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
96      - verification experiment natl_box.longstep
97    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
98      allow different versions of ifort (8 or 9) and different versions
99       of mpi (mpich or mpich2) to be used with the same optfile.
100      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
101       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
102    o pkg/seaice:
103      fix previous modif (3-level field removed) for old-pickup reading
104    
105    checkpoint61r
106    o pkg/seaice:
107     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
108      1. introduce fields for time step (N-1)
109      2. do not use levels 2 and 3 anymore (but keep them)
110      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
111         includes changes to pkg/thsice/thsice_get_velocity.F,
112         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
113         pkg/obcs/obcs_apply_uvice.F.
114     - completely remove code for leap-frog time stepping for second order
115       advection
116     - adjusted adjoint accordingly;
117       gradient checks have improved by an order of magnitude!
118    
119    checkpoint61q
120    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
121     - the boundary conditions along open boundaries are unclear, because the
122       associated masks are set to zero and are thus treated as closed when
123       applying the slip-boundary conditions.
124     - move initialisation of grid variables from seaice_init_varia to _fixed
125    o adding doc/diags_changes.txt
126    o model/src:
127      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
128       to avoid "_diags" naming if no relation to pkg/diagnostics.
129      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
130       file and only call PLOT_FIELD_XYZ if debugMode=T.
131      remove few PLOT_FIELD_XY calls outside initialisation.
132      remove few unnecessary BARRIER.
133    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
134      of salt_plume package in Southern Ocean
135    o pkg/thsice:
136     - fix hOceMxL in overlap (needed for sea-ice advection);
137       update output of experiment global_ocean.cs32x15.icedyn.
138    o pkg/seaice:
139     - make the (placeholder-)tracer IceAge a little more meaningful
140      by avoiding ridging of age due to convergent ice flow
141     - add diagnostics for surface temperature, atmospheric and oceanic
142       heat flux, and atmospheric and oceanic ice growth
143    
144    checkpoint61p
145    o eesupp (global_max & global_sum):
146     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
147     - remove starting & endding barrier (no longer needed)
148    o pkg/mdsio, writelocal:
149       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
150       (remove the STOP): uses shared buffer IO to store data from all threads
151       and then let master-thread write nThreads tiles.
152    o pkg/mdsio (read/write field):
153     - tiled IO done in 1 piece (all levels at a time);
154     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
155     - multi-threaded: allow to read/write local (non-shared) array
156       (was already working with singleCpuIO ; now works also without);
157       => no longer needs barrier call after reading a file (added inside
158       mds_read/write field).
159     - move barrier calls outside gather/scatter_2d to mds_read/write_field
160    o pkg/obcs/exf
161      - exf_getffieldrec.F: add a few ". _d 0" and
162                            add code to catch the case fldperiod = 0.  
163      - obcs_precribe_read.F: change if statements so that they match
164                              the variable type (_RL)
165      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
166        exf_iprec) as part of namelist EXF_NML_01
167    o pkg/mdsio:
168      - read/write tiled (local) files: read/write 1-level tile chunk at a time
169        (instead of segment of length sNx); expected to speed up tiled IO.
170    o pkg/exch2:
171      - take buffer copy from/to array out of S/R exch2_send/recv into new
172        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
173        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
174      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
175      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
176        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
177        including Topology header file (and common blocks).
178      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
179        remove 2nd exch call in exch2_s3d_rx (no longer needed).
180      - document S/R arg. list (+ update some comments)
181    o pkg/seaice:
182      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
183        temperature and humidity over sea ice based on climatological values.
184      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
185        of LSR (this change is expected to change the results slightly because now
186        it uses slightly difference moduli from the second last LSR solution, but
187        that is more consistent with the stress computations; this part of the code
188        is not tested in the verification experiments)
189      - fix diagnostics for flux of ice in case of B-grid
190      - turn strain rates eij and press into global fields within global
191        common block in SEAICE.h for more straighforward diagnostics
192      - fix diagnostics for principal stress components, press, zeta, eta
193        to give something meaning full
194    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
195      new output (all 4 tests) using default rotationPeriod.
196    o pkg KPP:
197      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
198      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
199        and normal grid from 1 to Nr)
200    o Fix computations of L4rdt in mom_calc_visc.F
201    o eesupp:
202      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
203      should be called before a "stop" if we know that all process are going
204      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
205    
206    checkpoint61o
207    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
208    o model/src/ini_curvilinear_grid.F:
209       compute angleSin/CosC when they are not read from a file
210    o pkg/seaice:
211       add pseudo time stepping for LSOR
212    o pkg/exch2:
213       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
214    o pkg/seaice:
215       Adding separate sea ice albedo, drag coefficients, and HO in Southern
216       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
217    o SingleCpuIO:
218       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
219    o pkg/seaice:
220       put exchanged variable in (local) common block for MPI+Multi-Threads
221       to work (necessary with exch1, and for now with exch2 too).
222    o verification: to get more experiments tested with mpi, mth and mpi+mth,
223      change tiling of:
224       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
225       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
226      update output of exp:
227       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
228       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
229      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
230                       (note: output.txt generated on faulks using only 1 tile)
231    o eesupp & mdsio (SingleCpuIO):
232     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
233       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
234       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
235     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
236     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
237       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
238    o pkg/exch2:
239     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
240       read parameter file "data.exch2" if it exists; otherwise try default regular
241       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
242     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
243       with new code (not to be used, just as a backup solution).
244     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
245       in utils/exch2/input.
246    
247    checkpoint61n
248    o eesupp & mdsio (SingleCpuIO):
249      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
250        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
251        receive real*4 array (instead of real*8) to read/write 32.bit files.
252        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
253         and remove new mapping S/R)
254    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
255      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
256        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
257        when using exch2. Add S/R to map global io-buffer to global model array.
258      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
259    
260    checkpoint61m
261    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
262      and add 3 other S/R for other types (R4,R8,RS).
263      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
264    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
265     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
266     - reduce number of macro definitions (keep only those which are used);
267       can always call directly the corrresponding S/R if needed.
268     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
269       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
270     Fixed wrong type of arg in:
271       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
272       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
273     To fix: global_sum of var in common block is wrong (multi-threaded) in:
274       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
275     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
276    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
277      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
278    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
279    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
280      edges are closed (zero depth); might happen with "blank tiles";
281      for now, disabled if using OBCS.
282    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
283      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
284    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
285      to reduce length of 1.D array print in STDOUT.
286    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
287      + use 48 tiles (16x8): this will allow to test "blank tiles".
288    o start to test MPI + multi-threaded (change testreport to skip tests
289      where number of tiles do not match).
290    o genmake2: add option "-omp" to turn on Open-MP ;
291      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
292    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
293      and keep the original tile numbering. Note: compatible with old
294      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
295    
296    checkpoint61l
297    o Overlaps had been forgotten in calculating ijk keys : fixed
298    o fix cyrus makedepend for gcc 4.4
299    o experiment fizhi-cs-aqualev20:
300      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
301      and generate new output. Note: new output is much closer to the old
302      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
303      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
304    o pkg/fizhi:
305     - change to avoid indices going deliberately over array-bounds
306     - remove unnecessary MPI stuff
307     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
308     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
309       does not go over array-bounds and therefore returns reliable output.
310     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
311       this S/R has 4 output arguments, which are used inside "get_alarm";
312       when it is called with the same variable "ndum" in place of several
313       output arguments, this produces weird side effect inside "get_alarm"
314      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
315       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
316       address) and produces error.
317    o tools/gemake2: (March 27-29 2009)
318      with option "-mpi": link *_mpi files from "MODS" dir (this is what
319      testreport does).
320    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
321    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
322       update lab_sea.lsr & lab_sea.salt_plume results
323    o pkg/seaice:
324      Major overhaul of the LSOR solver: change discretization from original
325      finite differences to finite volume. The old routine is still in the
326      file seaice_lsr.F and can be turned on with the CPP-flag
327      SEAICE_OLD_AND_BAD_DISCRETIZATION
328      Along with this change, the discretization of the strain rates is changed.
329      The same flag turns on the old discretization in seaice_calc_strainrates.F
330      All verification experiments with seaice are affected (except for
331      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
332      results by setting the above flag.
333      Further changes involve changes in defaults:
334      - ALLOW_FLOODING is defined and turned on by default
335      - SEAICEadvSnow = .true. is now the default
336      - SEAICEadvSalt = .true. is now the default
337      - SEAICEadvAge  = .true. is now the default
338      - SEAICE_clipVelocities  = .false. is now the default
339                                         (as per J. Zhang's recommendation)
340      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
341        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
342      - seaice_growth: replace computation of UG by a simple copy from wspeed
343    
344    checkpoint61k
345    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
346      seaice_lsr: fixed a few metric terms,
347                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
348                  add more debugging diagnostics
349      seaice_evp: removed superfluous many metric terms of FV discretization
350                  of stress divergence
351                  affects lab_sea, lab_sea.hb87
352      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
353                  of stress divergence for non-evp solver
354                  (this part is not tested anywhere)
355      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
356                  they were effectively only half slip
357                  affects lab_sea.hb87
358      updated all relevant verification experiments (except lab_sea//output_adm.txt
359        which was left over, but fails at level 7 & 6)
360    
361    checkpoint61j
362    o pkg/seaice: turn a few hard wired parameters into run time parameters
363    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
364      time in seconds as promised by the usints in seaice_monitor and exf_monitor
365    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
366      that are not cubed-sphere grids
367    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
368    o pkg/ctrl:
369      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
370    o non-hydrostatic (calc_gw.F):
371      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
372      update output of exp. global_ocean.cs32x15.viscA4
373    o remove backward compatibility for thetaMin,phiMin
374      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
375    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
376      interpolated wind field not only for curvilineargrid=.true., but also
377      for a rotated grid (rotateGrid=.true.)
378    o pkg/exf: add capability to bypass interpolation for runoff
379      by setting yet another CPP-flag
380    o eesupp/src, B-grid exchange:
381      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
382    o autodiff
383      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
384      allows to switch to single-prec common blocks;
385      corresponding switch occurs in tamc.h, integer isbyte
386      TAF store directivs "byte" and "kind" seem equivalent;
387      Most tamc.h have been updated correspondingly.
388    
389    checkpoint61i
390    o autodiff:
391      fix autodiff_sore/_restore indices for obcs
392      (spotted by I. Hoteit, M. Mazloff)
393    o pkg/autodiff, pkg/ctrl:
394      Add flag to reduce all tapelev I/O to single-prec.
395      In data.ctrl set
396        doSinglePrecTapelev = .TRUE.
397    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
398      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
399    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
400      real fresh water flux (not yet)
401    o pkg/mdsio & rw:
402     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
403     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
404    o pkg/flt:
405     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
406       init_fixed & ini_varia.
407     - clean-up & simplify linear interpolation S/R:
408       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
409     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
410     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
411     - add vert. coordinate & horiz. indices to output files.
412     - change vertical position in initial condition, from index to depth [m].
413     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
414       (easier to get to a curvilinear grid) ; delX,delY no longer used.
415    o pkg/ggl90: a few modifications:
416     - fix bottom boundary condition, and interpolation of KappaE
417       near top and bottom
418     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
419     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
420     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
421    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
422      (maintain temporary backward compatibility, until next checkpoint)
423    
424    checkpoint61h
425    o pkg/diagnostics with "periodic averaging diagnostics":
426      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
427    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
428    o pkg/obcs: fix loop ranges for balancing code
429    o pkg/flt:
430     - improve criteria for finding which tile owns a float.
431     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
432    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
433      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
434      with ocean biogeo)
435    o pkg/flt:
436     - do some cleaning and fix the restart ;
437     - add output.txt in flt_example/results to get this pkg tested.
438    o genmake2: add an EXTENDED_SRC option and flag.
439       for now, cannot be turned on on command line (only through genmake_local)
440    o pkg/mdsio: read/write vector:
441     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
442     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
443       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
444     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
445      (drop to 4 digits matching for grad). But this test does not look very
446      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
447    
448    checkpoint61g
449    o pkg/flt:
450      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
451       + make OPTIONS file more standard.
452      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
453      - fix _BYTESWAPIO CPP-Flag
454      - standard reading of file-parameter "data.flt"
455      - fix argument list of S/R FLT_RESTART
456      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
457    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
458    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
459      a still unfixed compiler/optimization bug
460    
461    checkpoint61f
462    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
463      update results of global_ocean.cs32x15.icedyn test.
464    o move getcon.F from model/src to pkg/fizhi.
465    o pkg/exf: add parameter for extrapolation of temp up to the surface
466       and option to prevent negative evap (in bulk_largeyeager04 only).
467    o Prather Advection scheme: fix tracer conservation for divergent flow
468      (e.g., when using NonLin Free-Surface).
469    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
470    o gmredi (Visbeck-variable-K):
471     - add more parameters to Visbeck-variable-K.
472     - use a 5 points average for dSigmaR in Visbeck-K calculation
473       (more "homogenous": same stencil and same weights as in dSigmaH)
474     - update output of ideal_2D_oce experiment.
475    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
476      (#undef REAL4_IS_SLOW)
477     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
478       coordinate variable
479     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
480       (surface forcing fields), removes some of the functionality
481     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
482     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
483       probably not all: copy _RS surface flux fields to RL field before
484       calling DIAGNOSTICS_FILL
485     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
486       real*4 (CALL EXCH_*_RS) versions.
487     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
488       (generate new output).
489    
490    checkpoint61e
491    o gmredi (Visbeck-variable-K):
492      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
493      - change computation of Visbeck-K where Slope > Smax :        
494        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
495        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
496    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
497      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
498    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
499    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
500      does not become too large (to avoid precision problems in implicit-diffusion
501      solver); update ideal_2D_oce output.
502    o pkg ggl90:
503      - in ggl90_cal.F: compute only one set of visc/diff, used to
504        step forward TKE/T/S/momentum
505      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
506        have Prandlt =1)
507    o gmredi (fm07):
508      - add lower limit on Transition layer thickness + lower limit on 1/lambda
509      - allow to set few more params from data.gmredi
510    o pkg ggl90:
511          - add missing sqrt(2) factor in computation of mixing length
512            scale in ggl90_calc.F
513            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
514    
515    checkpoint61d
516    o adjoint modifs
517      - adapt to new field rhoInSitu
518      - allow to revert from StoreDynVars2D, StoreDynVars3D
519        to individual fields
520        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
521    o store 3-D (in-situ) density in commom block (DYNVARS.h)
522     - save 1 rho computation.
523     - no longer modify T & S inland when using down_slope pkg.
524    o gad_som : allow to switch to SOM advection for T & S without corresponding
525      pickup files (using new S/R: MDS_CHECK4FILE).
526    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
527      (for useSingleCpuIO to work in multi-threaded)
528    o pkg/shelfice:
529     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
530       with SHELFICEtopoFile in data.shelfice
531     - move code for reading ice shelf topography and modifying hFacC into separate
532       subroutines of the shelfice package
533     - separate initialisation of "fixed" and "variable" variables
534     - kTopC is not (yet) replaced by kSurfC, although this is possible
535    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
536    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
537      and rename:
538      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
539      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
540    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
541    
542    checkpoint61c
543    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
544      to add mass source/sink of fluid in the interior (3-D generalisation
545      of oceanic real-fresh water flux).
546    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
547    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
548    o new pkg: down_slope
549      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
550      - presently, modify T & S inland (dwnslp_calc_rho.F).
551        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
552      - implementation for ocean in P-coords not tested.
553      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
554    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
555      (to facilitate conversion of oceanic pkg to p-coordinate).
556    o change FIND_RHO to FIND_RHO_2D :
557      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
558    o new pkg: cheapaml
559    
560    checkpoint61b
561    o exch2:
562      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
563      - no longer depend on the order sequence (N,S,E,W).
564      - 3rd exchange no longer needed (tested with 24 tiles).
565      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
566      - exch_UV_A-grid readily available (but not yet tested).
567      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
568      (both are no longer needed) in exch_uv: no effect in forward run; but
569       get truncation error differences with adjoint exch.
570    o exch2:
571     - change index-bounds storage (moved from target to local tile,
572       more intuitive this way) ; rename/remove some variables.
573     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
574    
575    checkpoint61a
576    o exch2/matlab-topology-generator:
577      fix bug in index bounds for N-S internal exchange (hard to tell if this
578      had any effect on the solution).
579    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
580      is exceeded
581    o testreport: modify syntax of awk, so that it works also with
582      awk, and not only with nawk and gawk
583    
584    checkpoint61
585    o autodiff
586      Change default for TAF usage by removing argument '-nonew_arg'
587      This changes TAF subroutine argument list (ordering of active var.)
588      Omission of this flag leads to incompatibility w.r.t. TAMC
589      To restore TAMC-compatibility, need following modifs:
590      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
591      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
592      Tested TAF version is 1.9.22
593      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
594    
595    checkpoint60
596    --->>> This is the last checkpoint for which generating the adjoint
597    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
598    --->>> by default.
599    --->>> Future checkpoints will ommit this flag by default.
600    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
601    o pkg/grdchk: Add gradient check to etan0 perturbations.
602    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
603    o pkg/autodiff: more flexibility in zeroadj.
604      model/src: modifying do_oceanic_phys.F accordingly.
605    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
606    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
607      special setup of gmredi for which the adjoint is stable
608      enough for parameter optimization.
609    o bridging the gap between eddy stress and GM.
610      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
611          along with a change in CPP option (now ALLOW_EDDYPSI).
612      -> when using GM w/ GM_AdvForm:
613          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
614          is applied either in the tracer Eq. or in momentum Eq.
615          depending on data.gmredi (intro. GM_InMomAsStress).
616      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
617      The key modifications are in model/src/taueddy_external_forcing.F
618      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
619    
620    checkpoint59r
621    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
622      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
623      fix option to read coriolis(@ cell-corner) from files with CS-grid.
624    o pkg/mnc: add some attributes to standard 1D-coordinate variables
625    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
626      mass points, when using mnc for output
627      - add runtime parameter (missing_value, missing_value_int) to override
628        default (which is the value of getcon('UNDEF'))
629    o pkg/mnc: prepare mnc for the actual use of missing values with the
630      diagnostics package: small fix in mnc_cw_readwrite.template and more
631      initialisation of never used fields
632      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
633      versions
634    o pkg/thsice/thsice_ini_vars.F added default initial values so that
635      thermodynamics sea ice solver does not blow up when some initial fields
636      are missing.
637    o move from external_forcing_surf.F to ini_forcing.F
638      the p-coord. hack consisting in using pLoad to set phi0surf ;
639      update output of tutorial_global_oce_in_p (affected @ truncation level).
640    o Freshen up a bit hs94.1x64x5, notably:
641      remove rotationPeriod and tRef=5*0. (adjoint only), and add
642      exactConserv=.TRUE.
643    o pkg/generic_advdiff:
644      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
645      applies to files where Temperature & Salinity 2nd Order moments are used.
646    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
647      this uses a dynamically allocated internal state data structure
648      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
649      and requires a fortran 90 compiler
650    
651    checkpoint59q
652    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
653       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
654    o Refresh tutorial_global_oce_biogeo, notably:
655      - change bathymetry (put back seamounts in ACC, use hFacs)
656      - change EOS (POLY3 --> JMD95Z)
657      - use Bryan-Lewis vertical diffusivity
658      - use multidimensional advection
659      - remove old virtual virtual in dic pkg, now done through ptracer pkg
660      - change a couple of parameters in dic pkg
661    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
662    o pkg/obcs: change default to OBCSfixTopo = .true.,
663      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
664      - replace "debugMode" with "debugLevel .GE. debLevB"
665    o implementation of TAF directives for gchem,cfc,dic
666    o remove "exp5" (replaced by tutorial_deep_convection).
667    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
668      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
669      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
670      --> changes results in exp4, seaice_obcs
671    o tutorial_deep_convection :
672      update the set-up and increase resolution and domain size ; start
673      from pseudo initial conditions = output at t=120mn in order to see
674      something happening when running testreport.
675    o pkg/seaice: add os7mp as an advection scheme
676                  add check for advection schemes
677                  add a flag for restoring T and S underneath sea ice
678    o pkg/my82: add netcdf-support and diagnostics
679    o thsice pkg:
680      - Now hsMax limits snow height by turning it into ice following
681        flooding scheme (and now conserving energy)
682      - Slight rewriting of the formula in thsice_calc_thick.F
683      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
684      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
685    
686    checkpoint59p
687    o gchem / dic / cfc :
688      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
689      - add new parameter files: "data.dic" & "data.cfc" ;
690      - various re-arrangement in initialisation & header file ;
691      - fix tutorial_global_oce_biogeo for multi-threaded test.
692    o pkg/dic: test for "pickup_dic" file when restarting ;
693      if no pickup-file, can restart with a re-initialised pH (same as it did
694      before) providing pickupStrictlyMatch is set to False.
695    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
696      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
697    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
698      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
699    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
700     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
701       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
702    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
703       scheme to use for vorticty-term ;
704     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
705       (with default selectVortScheme, return to original discretisation)
706     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
707    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
708    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
709      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
710      also fix diagnostics VISCAHW & VISCA4W.
711    
712    checkpoint59o
713    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
714    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
715      move a few statemens out the main loop into separate loops
716    o pkg/shelfice:
717      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
718        (kg/m^2/s), does not break tests, because in verification/isomip,
719        rhoConstFresh=rhoConst (by accident)
720      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
721      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
722        new file model/src/seawater.F, so that they are available for all pkgs.
723      - convert potential temperature into in-situ temperature. This changes the
724        isomip tests => update tests
725    o add a flag writePickupAtEnd (default=true) to be able to suppress
726      writing a pickup at the last timestep
727    o tools/mpack-1.6 :
728      - disable automake (not working) and autoconf (not needed).
729      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
730        also cleaner with much less compilation warnings.
731    o pkg/profiles:
732      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
733      (for "less than 32 characters name" compiler requirement)
734    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
735      conditions that have a different sampling frequency than S/T/U/V obcs
736    o pkg/diagnostics (stats-diags):
737      - fix global Min/Max in case 1 processor get only empty tiles
738    o genmake2: replace (4 times)
739         make genmake_tc_1.o >> genmake_warnings 2>&1
740      with
741         COMM="$CC $CFLAGS -c genmake_tc_1.c"
742         echo $COMM >> genmake_warnings
743         $COMM >> genmake_warnings 2>&1
744      to make genmake2 always see the value of CC as specified in the optfile.
745    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
746      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
747      - modify verification advect_cs test to test SOM-advection on CS-grid.
748    o pkg/ctrl:
749      - Rewrite of ctrl_map_ini_ecco.F,
750        introducing a generic routine (ctrl_map_ini_gen.F).
751      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
752    
753    checkpoint59n
754    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
755      number in dedicate array "hdiag":
756      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
757        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
758      - many small changes (integer format) for large number of diagnostics
759      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
760        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
761    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
762      usingSphericalGrid, this allows to define the rotated grid coordinates
763      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
764      geographical coordinates according to the inverse of the rotation defined
765      by the Euler angles, so that Coriolis parameter and online-interpolation by
766      exf works with the geographical coordinates on XC/YC/XG/YG.
767      Naturally, this feature does not work with all packages, so some
768      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
769      profiles), because there the coordinates are assumed to be regular
770      spherical grid coordinates.
771    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
772      - introduce isopycnal diffusion coefficient control.
773    o tools/adjoint_options:
774      - additional control vector components.
775    o pkg/mnc: have mnc create marginally meaning full coordinate variables
776      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
777    o pkg/mypackage:
778      - add example of read/write pickup for state-var ;
779      - add entry points to the main code for state-vars diags & write-pickup.
780    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
781      transitions for useExfYearlyFields
782      - add new subroutine that determines the file to read from for
783        use*YearlyFields = .TRUE. and .FALSE.
784      - add a verification experiment to global_with_exf that tests
785        useExfYearlyFields with USE_EXF_INTERPOLATION defined
786    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
787      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
788      subroutines (which could be generated from a template, because they are
789      almost identical), for now they are included in obcs_prescribe_read.F for
790      simplicity
791    o pkg/exf:
792      - add a little more diagnostic to exf_interp_read (in analogy to
793        mds_read_field, can be turned off with debugLevel < debugLevA=1)
794      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
795        ugly but fast by unrolling short inner loops, inserting a unroll=8
796        directive in routine lagran, and splitting a loop and making do while the
797        outermost loop (the latter requires the intoduction of index arrays)
798    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
799    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
800      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
801    o verification/seaice_obcs: updated for restart test and latest options
802    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
803      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
804      for now this is only available for the C-grid code and also within
805      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
806    
807    checkpoint59m
808    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
809      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
810    o gad_som : fix flux output (& diagnostics) to have same units as other  
811      advection scheme fluxes (was previously multiplied by deltaT).  
812    o added verification/seaice_obcs both to test seaice open boundaries
813      and to provide an example matlab scrpt for generating them
814    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
815    o pkg/salt_plume: clean up salt_plume_frac.F to
816      remove redundancy in PlumeMethod 1 and 4
817    o pkg/kpp: added saltplume diagnostics
818    o pkg/obcs and pkg/seaice:
819      - do not set uice and vice to zero when OB*icefile are unspecified
820      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
821      - moved seaice tracer obcs after call to seaice_growth
822    o pkg/salt_plume: added various options for salt plume depth
823      criterion and for vertical distribution of the salt
824    
825    checkpoint59l
826    o pkg/ptracers: new version of ptracers pickup:
827      read meta file and write only fields which are needed to restart.
828      ( same logic as main pickup file ; also using pickupStrictlyMatch )
829    o pkg/seaice:
830      - add timescale for melting due to warm mixed layer as a means of
831        setting SEAICE_availHeatFrac more conveniently
832      - add a CPP-flag/runtime parameter check for flooding algorithm
833      - reformulated availHeat in seaice_growth.F to be independent of AREA
834    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
835      unit changes
836    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
837    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
838      SX vector computer.
839    o pkg/seaice:
840      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
841        seaice forcing fields can now be read only through pkg/exf
842      - removed some unused halos
843    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
844    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
845      or U/VICE from U/VWIND before computing U/VSTRESS
846    
847    checkpoint59k
848    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
849      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
850    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
851      all experiments pass when compile with un-initialised var. checking option.
852    o added pkg/salt_plume
853    o script to test restart (for now, in MITgcm_contrib/jmc_script)
854    o pkg/seaice: new read/write pickup version.
855      read meta file and write only fields which are needed to restart.
856      ( same logic as main pickup file ; also using pickupStrictlyMatch )
857    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
858    o lab_sea.hb87: modify the domain & update output.hb87.txt :
859      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
860      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
861      process. Fixed here by closing the domain at the Northern boundary.
862    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
863    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
864      a set of consecutive levels in/from a 3-D array.
865    o pkg/ptracers:
866      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
867      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
868    
869    checkpoint59j
870    o in pkgs: dic, obcs, offline, rbcs:
871      standard way to compute coeff. for time interpolation between 2 time reccords
872      which retains full precision (& make results less dependent on compiler).
873      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
874    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
875      packages instead of reading ice cover and wind speed separately
876    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
877     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
878      to allow to compile customized code before the update)
879    o cleaning-up:
880      - fix CPP instruction syntax in pkg/obcs
881      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
882        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
883      - fix some threads issue in IO parts.
884    o pkg/dic:
885      - add tons of "_d 0" (--> much better testreports !)
886       and then update outputs of tutorial_global_oce_biogeo
887    o pkg/mom_fluxform:
888      add a special version of momentum advection intended to conserve momentum
889      next to a bathymetry step or a coastline edge. (default = off = #undef)
890    o new read/write pickup version:
891      - for now, only implemented for main (mdsio) pickup file.
892      - write out only what is needed to restart; merge pickup_nh , pickup_ph
893        and main pickup together.
894      - read meta file; read only what is needed to restart; stop if a field
895        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
896        if it make sense (even if the restart is not perfect).
897      - if no meta file, assume that pickup to read corresponds exactly to
898        a pickup that would currently be written.
899      - read pickup written in the old format (until checkpoint59i) if it
900        recognizes an old meta file (no field-list).
901      - add a meta file in exp. which starts from a pickup: 2 cases:
902        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
903         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
904        b) a meta file describing the content of the associated pickup file
905         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
906    o pkg/mdsio & pkg/rw:
907      - new routine to read a meta file ; new set of routine to read
908        Multiple-fields file (with meta file).
909    o added open boundary conditions capability for seaice
910        HSNOW, HSALT, UICE, and VICE
911    
912    checkpoint59i
913    o adjoint:
914      * fix multiDimAdvection adjoint
915        (partial recomputation problem by TAF for fVerT(:,:,kDown)
916        and comlev1 size definition (maxpass vs. max. number of tracers)
917      * verification/global_ocean.90x45x15 adjoint now tests
918        NLFS and multiDimAdvection using DST3 (=30)
919      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
920    o pkg/kpp: add "_d 0" to real constant (if missing);
921      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
922      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
923    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
924      for internal parameters related to restart process (formerly from PARAMS.h)
925      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
926    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
927      as argument. (only atm2d & obcs write_pickup have not yet been updated)
928    o pkg/monitor:
929      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
930      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
931      - account for deep Atmosphere factor and density factor (anelastic)
932    o added open boundary conditions capability for seaice HEFF and AREA
933    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
934      thermodynamics
935      - requires a little reorganization, which affects the testreport results
936        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
937        so that now the conservative form is tested
938      - add a few comments
939    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
940    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
941    o add new diagnostics to seaice: advective, diffusive fluxes (only for
942      multidim-advection, for scheme 2 they are not filled) and transports,
943      thermodynamic growth rates
944    o change units of EmPmR (inside the code, + within coupling interface)
945      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
946      Affects results @ truncation level (cg2d match) and update output of
947       experiments: lab_sea(6), global_ocean.90x40x15(10),
948      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
949      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
950      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
951      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
952    
953    checkpoint59h
954    o pkg/exf:
955      - improve vectorization by moving if-statement out of loops in
956        exf_mapfields, exf_radiation
957      - exf_bulkformulae.F: introduce 2D fields and vectorize code
958    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
959    o testreport:
960      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
961        monitor & update offline_exf_seaice exp. output.
962      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
963    o pkg/seaice:
964      - bug fix in the evp solver: boundary conditions were affected be
965        masking of zMax/zMin (changes results)
966      - minor bug fix in boundary conditions in seaice_calc_strainrates
967        (changes results for no_slip)
968      - seaice_lsr.F: make interpolation of eta dependent on boundaries
969      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
970      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
971        stress formulation and no-slip boundary conditions
972    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
973      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
974    o pkg/seaice: a first HSALT time stepping equation has been checked in
975    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
976      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
977      without requiring DO-IF statements
978    o pkg/thsice:
979      use continuous power-law function for partition of energy between lateral
980      melting/freezing and thinning/thickening ; old code using step function
981      still available with #undef THSICE_FRACEN_POWERLAW
982      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
983    o testreport: change AD testing : check against results/output_adm.txt
984      using same scripts as for forward test.
985    
986    checkpoint59g
987    o adjoint testing: in preparation for changing testreport:
988      - output format: cost and grad written on separated lines
989      - ad output results in directory "results" (instead of "results_ad")
990    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
991    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
992    o pkg/ecco: allow user defined cost function contributions
993    o testreport:
994      Allow to choose (per experiment) the list of tested output variables
995       and the main variable (used to issue a pass/FAIL ) ;
996      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
997      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
998      Also modify printing of summary:
999       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
1000       b) echo the list of tested variables in the individual summary.txt of
1001          each experiment.
1002    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
1003      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
1004      (but still depend on the tile decompostion of the domain).
1005    o pkg/seaice: change a discretization detail to make the B-grid code
1006      "more symmetric". This change is likely to remove all "ridges/leads" that
1007      where quasi-aligned with the grid in B-grid solutions. It may also be
1008      the solution to the stress coupling issues with the B-grid.
1009    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
1010      remove .cvsignore from input dir. (since testreport no longer run here).
1011    o pkg/thsice:
1012     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
1013     - fix reshaping of sea-ice just after advection:
1014       melt all the ice only if ice-volume is too small.
1015     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
1016       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
1017     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
1018    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
1019      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
1020    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
1021      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
1022      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
1023      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
1024      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
1025      -> update output.txt
1026    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
1027     this affects truncation error: -> update output.txt of exp:
1028      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
1029      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
1030    
1031    checkpoint59f
1032    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
1033    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
1034      a bounded range (in forward mode)
1035    o pkg/ecco, ctrl, autodiff and mom_common:
1036     internal parameter controls, completements of implementations
1037    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
1038    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
1039      (not seem any difference in testing results).
1040    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
1041       at face corners.
1042    o pkg/generic_advdiff:
1043     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
1044      loop range indices for computing vertical advection tendency
1045      and do the calculation in the interior only (no overlap) ;
1046      for now, only implemented for SOM advection (to save CPU time).
1047     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
1048    o exch2 adjoint
1049      First set of changes:
1050      - add exch2 hand-written adjoint templates
1051      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
1052        This will require cleanup in pkg/autodiff/*.F
1053        (changed routines currently kept separate in verif. code/)
1054      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
1055        that used to hide exch2 or cubed-sphere specific code
1056        (commented via 'cph-exch2')
1057    o pkg/seaice
1058      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
1059    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
1060       output of global_ocean.cs32x15.thsice .
1061    
1062    checkpoint59e
1063    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
1064      for B-grid vector (not yet tested) and C-grid vector (<- only used
1065      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
1066    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
1067      (#ifdef ALLOW_SALT_PLUME)
1068    o gather_2d/scatter_2d: removed halo regions
1069    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
1070      scheme and the corresponding test case (under front_relax dir). For now,
1071      only available with Skew-flux form and not yet tested in realistic set-up.
1072      adjoint: store directives updated, but gradient checks deteriorated,
1073      so maybe GM/Redi adjoint is now broken.
1074    o seaice adjoint
1075      * add AREA, HEFF, HSNOW as control variable
1076        (should not change lab_sea results)
1077      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
1078    o pkg/seaice:
1079      * added computation of saltFlux in seaice_growth;
1080        For time being, sea ice salinity is assumed constant
1081        contribution of snow flooding to freshening of sea ice is neglected.
1082        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
1083        defaults to 0.0 in order to maintain backward compatibility.
1084        Typical values for SEAICE_salinity are 4 to 10 g/kg.
1085      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
1086      * added SEAICE_availHeatFrac, which specifies fraction of surface level
1087        heat content used to melt or grow ice
1088      * commented out cap of HICE: it helps keep ice thinner
1089      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
1090      * applied OBCS T/S mask to HEFFM sea ice mask
1091    
1092    checkpoint59d
1093    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1094     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1095     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1096    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1097     and change default value of parameter "GM_Small_Number";
1098     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1099       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1100       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1101    o pkg/ecco: cost function when applying pkg/smooth to controls
1102    o pkg/ctrl: add forcingPrecond run time parameter
1103    o pkg/seaice:
1104     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1105     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1106       changes verification/lab_sea
1107     - rearrange implicit part of u-equation in LSR solver to make it easier to
1108       read, understand, and debug. This causes changes at the truncation level.
1109     - fix (serious) bug in the boundary conditions (sign error in the implicit
1110       part) of the LSR solver. Changes all LSR results.
1111     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1112       is initilized with small values - does not change lab_sea results.
1113     - added HsnowFile initialization capability
1114    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1115     initialization of pkg/smooth and application to control vector
1116    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1117    o dependencies: pkg/profiles requires pkg/cal
1118    o pkg/profiles:
1119     - added option ALLOW_PROFILES_GENERICGRID
1120         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1121         that interpolation information (grid points and coefficients) is provided
1122         within the netcdf input files.
1123         -> sample matlab scripts can be found in MITgcm_contrib/gael
1124         that allow you to prepare netcdf input files.
1125     - also modified: cleaner include statements, cleaner error print statements,
1126       cleaner stops when error, and more tests of the netcdf input files consistency.
1127    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1128    o pkg/seaice:
1129     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1130       requires a new routine: seaice_diagnostics_fill.F
1131     - make sure that seaice does not move if not forced (pressure replacement
1132       method, Hibler and Ip, 1995), changes results
1133     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1134     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1135       It is turned off by default (=-1.), because it changes the results.
1136     - make it possible to read AREA from a file, too.
1137    
1138    checkpoint59c
1139    o add S/R and diagnostics for oceanic mixed-layer depth
1140    o move GMRedi call after all vertical mixing schemes (including KPP)
1141    o pkg/thsice:
1142     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1143      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1144    o pkg/obcs:
1145     - bug fix for balance code
1146    o pkg/seaice:
1147      - allow values of SEAICE_elasticParm > 1
1148      - add new parameter SEAICE_evpTauRelax as an alternative
1149        to SEAICE_elasticParm
1150      - make lsr boundary conditions free slip (by default), changes result
1151      - add code for no slip boundary conditions for lsr
1152      - set minimum of zeta to zero (and not 4e8) (changes results)
1153      - add a cap on AREA after advecting AREA if seaice_growth is not called
1154    o change calculation of Visbeck K:
1155      - no longer depend on tapering scheme; instead, compute slope (limited
1156        by GM_maxSlope). this is equivalent to what was comuted before with
1157        clipping or linear tappering.
1158      - fix vertical averaging (wrong by 1/2 level)
1159      - leave the old version (but will not be maintained) within
1160        #ifdef OLD_VISBECK_CALC / #endif
1161      - update output of exp. ideal_2D_oce
1162    o change error catch in calc_r_star to improve vectorization
1163    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1164      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1165    o adjoint:
1166      Re-organized adjoint checkpointing according to Matt Mazloff
1167      (but with modifs/completions/cleanups)
1168      Storing is now bundled into large arrays to optimized I/O
1169      (and second step in cleanup of the_main_loop)
1170    
1171    checkpoint59b
1172    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1173      - export/import (between ocean & coupler) fields needed for ocean DIC.
1174    o pkg/seaice:
1175      - get rid of three more exchanges seaice_calc_viscosities (required
1176        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1177      - bug fix in seaice_ocean_stress (update of lab_sea required)
1178      - reduce loop boundaries to necessary minimum also in seaice_evp
1179      - go back to the old way of computing deltaC/Z as the adjoint likes that
1180        better
1181    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1182      passive tracer to an Age Tracer) + update output.txt
1183    o pkg/exf:
1184      - implement A-grid / C-grid selection for wind-stress input files.
1185      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1186      for now, in exf_bulk_largeyeager04.F only :
1187      - change implementation for case where windspeed + 2. components wind-stress
1188        are read-in. AND use rhoConstFresh to convert evap.
1189    o pkg/seaice:
1190      - use correct EXCH_UV for wind-forcing (on A-grid).
1191      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1192        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1193    o pkg/exf:
1194      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1195      EXF_INTERPOLATION:
1196      - merge global_with_exf/code version of exf_interp_read.F
1197        to the main code ;
1198      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1199        reading the file ; Important: This options needs to be defined to recover
1200        previous code.
1201        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1202      - no longer loose real*8 precision along the way when using exf_iprec=64.
1203    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1204      - change discretisation of evp-solver in order to avoid another exchange
1205        (changes lab_sea) and clean up a little
1206      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1207        help the adjoint (this also changes the results slightly)
1208      - add a few "_d 0" where they had been missing in seaice_evp.F
1209      - cleaning up: remove unused seaice_calc_rhs.F
1210    o pkg/exf: some cleaning-up:
1211      - change various "constants" into runtime parameters
1212      - cleaned-up Large&Yeager04 routine which should eventually
1213        replace exf_bulkformulae.F (changed names of S/R and CPP)
1214        and merged various ALLOW_ATM_WIND options
1215     only used with thsice pkg (in thsice_get_exf.F):
1216      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1217        which are used when useStabilityFct_overIce=TRUE (= the default)
1218      - change default values of ice & snow emissivity and scale downward LW
1219        by ice & snow emissivity.
1220    o pkg/thsice:
1221     fix few little problems, in thsice_calc_thickn.F:
1222      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1223      - melt only laterally if hIce < hThinIce (as the comments say)
1224      and in thsice_extend.F:
1225      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1226      - start to form ice as soon as the minimum ice-volume is reachable.
1227     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1228      and cpl_aim+ocn
1229    o pkg/kpp
1230     - move computation of surface related input fields to KPP into a new
1231       subroutine kpp_forcing_surf.F
1232     - remove wrong (within bi,bj loops) EXCH calls.
1233     - little cleaning (add argument myThid in last position, cvs header ...)
1234     - for now, fix conservation problem by exchanging KPPviscAz (may not
1235       be the best fix)
1236    o pkg/seaice
1237     - check for inconsistent evp parameter/cpp-flag combination
1238     - remove leftover errIO flat for obsolete name list error handling
1239    o OpenAD
1240     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1241    
1242    checkpoint59a
1243    o pkg/seaice: some parameter clarifications and a little bit of clean up
1244    o pkg/thsice: rename run-time parameters:
1245       himin       -> hIceMin
1246       himin0      -> hThinIce
1247       hihig       -> hThickIce
1248       i0          -> i0swFrac
1249       transCoef   -> bMeltCoef
1250       frac_energy -> fracMelting
1251      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1252       with default values (for now) that do not change the results.
1253      remove old version of thsice vars advection in pkg/seaice.
1254    o in FFIELDS.h:
1255      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1256      - make pLoad & sIceLoad always available (but still only used if
1257         ATMOSPHERIC_LOADING is #define).
1258    o pkg/kpp: replaced _KPP_RL with _RL
1259    o bug fixes for vertical diffusivity computations when both KPP and
1260        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1261        are no longer updating the vertical diffusivity array
1262        (passed as argument) but are (re-) setting those arrays.
1263    o pkg/seaice: fix bug in evp solver, while doing that
1264      - change (improve?) discretization of stress computations for both
1265        cgrid-lsr and evp solver
1266      - add a new routine to compute strain rates
1267      - the above changes lab_sea results
1268      - add no slip conditions for evp solver (off by default), lsr-version
1269        may follow
1270      - fix exchange for shear at Z-points (does not change lab_sea)
1271      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1272        (to force the user to pick a time step since there is not "safe" way
1273        of choosing it)
1274      - add principal stress diagnostics
1275      - rearrange fields for evp a little to avoid having to call a: too many
1276        exchanges and b: exchanges for stress trensor components which we do
1277        not have.
1278      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1279        of evp, complete rewrite for lsr case (latter is does not yet work
1280        in all cases)
1281    o pkg/kpp: add code to have mixing in shelf ice caverns
1282      - add myThid to all kpp routines (long overdue)
1283    
1284    checkpoint59
1285    o pkg/exf:
1286      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1287        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1288      - move exf header files from lower_case.h to UPPER_CASE.h ;
1289        add missing cvs Header & Name
1290      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1291      - add namelist param. selectStressGridPosition, exf_monFreq
1292      - retire many _CLIM routines, and remove data.exf_clim
1293        + params moved to data.exf
1294        + climsst, climsss now handled by exf_set_gen, i.e.
1295          climss?period=0 refers to constant field,
1296          climss?period=-12 to monthly forcing
1297      - split up namelists in data.exf
1298    o pkg/seaice:
1299      - remove seaice_exch and seaice_exch_uv
1300      - remove superfluous exchange of theta
1301      - add myThid to seaice_budget_ocean/ice
1302      - add new interface for atmospheric wind forcing (C-grid only)
1303        + new routine
1304        + two new field (taux, tauy for stress over ice)
1305        + removed one global field (DAIRN) for C-grid case only
1306    o pkg/thsise
1307      - 2nd set of modifs for thsice adjoint in conjunction with exf
1308    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1309    
1310    checkpoint58y_post
1311    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1312      vertical diffusivity, similar to that in MOM4; turned on using
1313      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1314      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1315    o Added capability for 3D specification of background vertical diffusion
1316      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1317      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1318      "data" file that contains the 3D vertical diffusivity coefficients.
1319    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1320      - add code within pkg thsice to advect & diffuse sea-ice fields
1321      similar to (and will replace) what has been added in  seaice_advdiff.F,
1322      but: - conserving Mass, Heat & Salt.
1323           - better when using non-linear advection scheme (not yet fully tested)
1324           - can also be used in atmospheric set-up (for now, only the diffusion).
1325    
1326    checkpoint58x_post
1327    o IO option for global-file compact format:
1328      - add options when generating topology (utils/exch2/matlab-topology-generator)
1329      - add I/O capability (pkg/mdsio).
1330      - adapt utils/matlab/rdmds.m to read this format.
1331      for now long-line format not yet supported by pkg/mdsio (& exch2).
1332    o shelfice: add a few diagnostics
1333    
1334    checkpoint58w_post
1335    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1336      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1337      (and replace horiVertRatio in NH code).
1338      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1339                         and tutorial_plume_on_slope (sensitive to truncation)
1340    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1341      directly to drive seaice model (C-grid only)
1342    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1343     - reintroduce computation of wind from stress,
1344     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1345       mass points to avoid tau = 0
1346     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1347    o rdmnc.m: make it work with "global" files created with gluemnc
1348    o rdmnc.m : some improvements in dealing with singleton dimension
1349      (tested on all testreport mnc output files).
1350    o genmake2: disable pkg/profiles if netcdf test fails.
1351    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1352    o move call to cal_readparms up to make calendar parameters/variable available
1353      to all packages
1354    
1355    checkpoint58v_post
1356    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1357      useDynP_inEos_Zc tested.
1358    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1359    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1360      and portions thereof.  See read_cs.txt for description and examples.
1361    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1362      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1363      following the great-circle arc between those 2 points.
1364    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1365      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1366    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1367     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1368     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1369     - still needs work (not working with some options ; efficiency to improve)
1370       and serious testing.
1371     - use this scheme for temperature & salinity in 2 advection test exp.:
1372       advect_xy & advect_xz, respectively.
1373    
1374    checkpoint58u_post
1375    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1376    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1377    o testreport: add option "-skipdir" to skip some test.
1378    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1379      momentum calculation.
1380    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1381    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1382      remove checkpoint.F and the_correction_step.F (no longer used);
1383      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1384    o add option (linFSConserveTr) to correct for tracer source/sink due to
1385      Linear Free surface
1386    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1387    o pkg/thsice: fix reading mnc-pickups
1388    
1389    checkpoint58t_post
1390    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1391    o pkg/mdsio:
1392     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1393       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1394       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1395     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1396     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1397       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1398     - new S/R (to replace MDSWRITEMETA), which allows to write more
1399       informations (variable names, time ...) to meta files.
1400     - modify rdmds.m to give back the meta file content.
1401    o pkg/diagnostics: change vertical interpolation to be safer, and more
1402       flexible (define p-levels to interpolate to in data.diagnostics);
1403      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1404       diagnostic pointer.
1405    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1406    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1407    o fix multi-category seaice:
1408     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1409       SEAICE_MULTICATEGORY
1410     - fix short wave heat flux
1411    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1412       and allow to use EVP solver. Change forward lab_sea: test both EVP
1413       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1414    o Initial check-in of lab_sea adjoint
1415      (very similar to natl_box_adjoint/code_seaice)
1416      * used C-grid and EVP solver
1417      * used KPP, GM/Redi
1418      * uses inAdExact=.TRUE.
1419      * gradient checks fail for both ADM and TLM
1420        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1421        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1422        issue is related to forward mismatch between g77 an ifort
1423    o pkg/seaice: overhaul of thermodynamics
1424     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1425     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1426     - move a few global fields out of SEAICE.h into seaice_growth.F and
1427       make them 2D (FICE/QNETO/ ...)
1428     - remove FO (it is the same as QNETO)
1429     - introduce a few local fields to avoid modifying external fields such
1430       as atemp, etc.
1431    
1432    checkpoint58s_post
1433    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1434      changed exf_set_gen.F so that
1435        genperiod=0 means input file is one time-constant field and
1436        genperiod=-12 means input file contains 12 monthly means
1437    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1438      this affects truncation error ; generate new output file for exp. which
1439      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1440        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1441        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1442        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1443        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1444        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1445    o start implementation of deep-atmosphere and anelastic formulation
1446    o verification: remove 2nd copy of input files and use script "prepare_run"
1447      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1448    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1449    o profiles: fix for multithreaded case
1450    
1451    o diagnostics: rename few diags:
1452      s/'PRESSURE'/'RCENTER '/g
1453      s/'TICE    '/'oceFreez'/g
1454      s/'TAUX    '/'oceTAUX '/g
1455      s/'TAUY    '/'oceTAUY '/g
1456      s/'SWFLUX  '/'oceQsw  '/g
1457      s/DIFx/DFxE/g
1458      s/DIFy/DFyE/g
1459      and add few ocean-forcing diagnostics:
1460      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1461    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1462      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1463      as actual snow thickness.  It now refers everywhere to effective snow
1464      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1465    
1466    checkpoint58r_post
1467    o modifications to pkg/seaice/growth.F, which change results of
1468      lab_sea experiment: fixes pertain to melting snow over open water, to
1469      masking EVAP under sea ice, and to using the correct AREA variable for
1470      computations of EVAP, PRECIP, HSNOW, and GHEFF
1471    o add ability to read bathy, salt, and theta using MNC (off by def)
1472    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1473      both are turned off by default and do no change any results
1474    o seaice advection with pkg/thsice: a step toward the use of non-linear
1475      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1476    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1477      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1478      in natl_box (affects results @ truncation level: update output.txt)
1479    o multi-threading and IO:
1480      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1481      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1482        (needed to work with SingleCpuIO): tested in all verif. exp.
1483    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1484      affects the results (but none of the verification test uses this scheme).
1485    o Adding some pkg/diagnostics capability to pkg/seaice
1486      (will certainly be subject to changes)
1487    o ctrl: adding new control variables:
1488      lwflux, lwdown, evap, snowprecip, apressure, runoff
1489    
1490    checkpoint58q_post
1491    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1492      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1493      high_res_cube configuration by 4% on Columbia.
1494    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1495      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1496      dynamical allocation (seems to work in multi-threaded).
1497    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1498      single CPU io) so that TAF does not have to see EESUPPORT.h
1499    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1500    
1501    checkpoint58p_post
1502    o obcs: stop if obcs is used with useCDscheme = .true.
1503    o shelfice:
1504     - fix a sign error so that no slip at shelfice interface works
1505     - remove stop for combination non-hydrostatic code and shelfice. That does
1506       not mean, that the results are correct, but at least they are numerically
1507       stable
1508    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1509    o added adjoint exch routined for all exch*3d* routines
1510      and updated flow directives
1511    
1512    checkpoint58o_post
1513    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1514      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1515    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1516      and clean-up reading/writing of pickup files.
1517    o fix local version of read/write pickup (NH part) in rotating_tank/code
1518    o simplify EXCH interface:
1519     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1520     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1521    o added the regrid package
1522    o shelfice:
1523     - add a simple boundary layer scheme to reduce noise
1524     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1525    
1526    checkpoint58n_post
1527    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1528       local variable (not in common block).
1529    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1530      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1531      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1532        to work with SingleCpuIO.
1533    o add "_d 0" to real constant of pkg/cfc subroutines ;
1534       update exp. cfc_exemple & tutorial_cfc_offline output files.
1535    o multi-threading and IO:
1536      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1537        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1538      - barrier before and after reading.
1539      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1540      - avoid using MDS_WRITELOCAL for LAND pkg output.
1541      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1542        common-block variables ; Allows multi-threading with master-thread IO.
1543    o change default MAX_NO_THREADS from 32 to 4 ;
1544      and stop cleanly when MAX_NO_THREADS is too small.
1545    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1546    
1547    checkpoint58m_post
1548    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1549       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1550    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1551       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1552       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1553    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1554        add MITgcm_tutorials (= code + all the tutorials)
1555    o ecco, option to compute cost for total ssh (mean+anom)
1556    o consistent with addition of ptracer and ssh in pkg/profiles
1557    o profiles: adding ptracer and ssh
1558    o testreport: change multi-test output-file name
1559      (from output.txt.{name} to output.{name}.txt)
1560    o profiles: now ok for mutli-tiles case
1561    o seaice: add 4 parameters for different advection schemes for area,
1562      (effective) seaice thickness, enthalphy, and snow height. Their default
1563      is the standard parameter SEAICEadvScheme
1564    o calc_gw:
1565     - add cosFacU in zonal viscous flux (harmonic.visc.).
1566     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1567       of tutorial_plume_on_slope.
1568    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1569    o calc_gw: true flux-form, account for horizontal grid spacing.
1570      update rotating_tank results, but not plume_on_slope (affected at
1571      truncation level, 11 digits).
1572    
1573    checkpoint58l_post
1574    o calc_gw:
1575     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1576     - remove side-drag for now (need to fix it); update plume_on_slope results.
1577     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1578    o commit code to make SST/SSS weights spatially variable
1579      (based on either variable in-situ or variable initial T/S weights)
1580    o pkg/ecco:
1581      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1582        now based on horizontally varying weights wthetaLev, wsaltLev
1583      * cost_averagesflags now returns year indices in addition to day, month
1584      * sflux balance is performed on annual basis
1585        (sflxumm, sfluxmm2, bal_sfluxmm)
1586      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1587        including separate counting and multipliers
1588    o pkg/rbcs
1589      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1590    
1591    checkpoint58k_post
1592    o testreport:
1593     - always build in dir. "build" (if not there, mkdir build instead of building
1594       & running in input)
1595     - run in dir run (if it exists), in build otherwise.
1596     - call prepare_run (if input/prepare_run exists)
1597     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1598    o pkg/exf modifications to interpolation and rotation routines for more
1599       reasonable treatment of North Pole singularity: for tracers North Pole
1600       value is set to northernmost zonal-mean value, for zonal velocity it is
1601       set to zero, and for meridional velocity it is set to northernmost value.
1602    o pkg/exf/exf_check_range.F
1603     - add tile index to diagnostics and move stop statement to the very
1604       end of the routine.
1605    o pkg/diagnostics: (diagnostics_main_init.F)
1606      define title of isomorphic variables according to the current config.
1607    o pkg/thsice with pkg/seaice dynamics:
1608    - fix domain of computation (interior only, required for exf) and do exchanges
1609    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1610    o towards a standard way of dealing with multi-threading in MONITOR
1611      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1612    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1613       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1614    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1615    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1616    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1617       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1618    o tracer advection:
1619     - clean-up and simplify calc_common_factors.F
1620     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1621       advection subroutine (but still not used within DST advection S/R)
1622    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1623    
1624    checkpoint58j_post
1625    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1626      from file (collects calls previously in FORWARD_STEP)
1627    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1628    o adjoint store dir. adjusted accordingly
1629    o genmake2
1630      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1631    
1632    checkpoint58i_post
1633    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1634      on wind stress (SEAICEstressFactor defaults to 1.)
1635    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1636      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1637    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1638      on CS-grid: no longer loosing mass.
1639    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1640    o pkg/ggl90: fix sloppy output and fix a bug
1641    o pkg/seaice: added SEAICEuseEVPpickup parameter
1642      - Set to false in order to start EVP solver with
1643        non-EVP pickup files when using SEAICEuseEVP
1644      - fix sign error in diffusion in seaice_calc_rhs
1645    
1646    checkpoint58h_post
1647    * Modifications for bottom topography control
1648      o replace hFacC by _hFacC at various places
1649      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1650      o add non-self-adjoint cg2d_nsa
1651      o update autodiff support routines
1652      o re-initialise hfac after ctrl_depth_ini
1653      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1654    * Adding verification for 5x5 box (4-layer) bottom topography control
1655    
1656    checkpoint58g_post
1657    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1658       used for mean seasonal cycle, mean diurnal cycle); add an example
1659       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1660    o pkg/ggl90:
1661      - add parameter (minimum surface kinetic energy)
1662      - fix bug (avoiding division by zero)
1663    o couple pkg/thsice to pkg/seaice:
1664      - modify advection in seaice to accomodate new scalar fields to be advected
1665      - only muliDimAdection scheme work with seaice/thsice
1666      - mapping of thsice-variables to seaice-variables, back and forth
1667      - does not break the verification experiments, but does not give the
1668        desired results either
1669    o pkg/seaice
1670      - make (default) second order advection a bit less confusing?
1671    
1672    checkpoint58f_post
1673    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1674      to pkg/seaice):
1675      - new routines thsice_map_exf and thsice_get_exf provide the interface
1676      - add an additional formal parameter to thsice_solve4temp
1677    o pkg/exf:
1678      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1679      - correct Stefan-Boltzmann constant
1680      - new parameter for longwave surface emittance
1681      - separate some stuff from exf_bulkformulae into new routines  
1682        exf_radiation, exf_wind
1683      - add new parameters and constants: longwave emissivity for ocean, ice
1684        and snow, evaporation parameters over ice
1685      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1686        either wind from stress or stress from wind
1687    o pkg/thSIce:
1688    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1689    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1690       and THSICE_CALC_THICKN
1691    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1692    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1693      to make debugging easier.
1694    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1695    o pkg/bulk_force:
1696      - clean-up comments and parameters ;
1697      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1698    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1699      generate new output for test-experiment: aim.5l_cs.thSI
1700    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1701      testreport accordingly
1702    
1703    checkpoint58e_post
1704    o SEAICE_CGRID adjoint done
1705    o R_STAR adjoint implemented.
1706      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1707      * need to sort out init. of h0facc, etc.
1708    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1709      to be able to use it in pure forward.
1710    
1711    checkpoint58d_post
1712    o upgrade simple test-experiment to tutorial example:
1713     step.1: duplicate the experiment and (step.2) will remove the old copy.
1714      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1715      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1716      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1717      tutorial_global_oce_biogeo    <- copy of dic_example
1718      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1719      tutorial_plume_on_slope       <- copy of plume_on_slope
1720      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1721      tutorial_global_oce_optim     <- empty for now (David ?)
1722      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1723     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1724    o correct a sign problem in cost_scat.F
1725    o obcs and ptracers: fix boundary conditions for advections schemes
1726      with larger stencil
1727    o thsice adjoint: start
1728    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1729      completeness
1730    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1731      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1732    o ptracers adjoint:
1733      * avoid extensive recomputatations
1734      * fix missing re-init. of gptr (missed by TAF)
1735    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1736      me to turn off the excessive output to STDOUT that this package produces
1737    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1738      and add those terms in Vector-Invariant formulation.
1739    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1740      if the control period (xx_hfluxperiod etc) is 0
1741    o in profiles pkg, clean routines and fix details
1742    o in ecco pkg, reading ssh data:
1743      fix problem in case the model does not start at iter0=0
1744    o fix mnc-pickup/restart for ptracers
1745    o new package prifiles:
1746      code to compute profile-based cost by Gael Forget
1747      (modifs in ecco, ctrl, autodiff)
1748    o Benign bug fix in initialization (spotted by M. Mazloff) of
1749      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1750    
1751    checkpoint58c_post
1752    o adjoint: finish NLFS adjoint and provide reference output in
1753      verification/global_ocean.90x40x15/results_ad_nlfs
1754    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1755      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1756      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1757      with SEAICE_CGRID defined.
1758    o move calendarDumps from "data" to "data.cal" and clean-up the code
1759      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1760    o add useEXF & useCAL flags (for now, set in hard-coded way)
1761    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1762      (were missing in NH mode, and wrong in quasihydrostatic mode).
1763      waiting for Chris updated version of calc_gw to add those CALLs.
1764    o fix bug in quasihydrostatic S/R ;
1765      add a test for this option: global_ocean.90x40x15.qshyd
1766    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1767      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1768    o add on/off flag useOffLine for package OFFLINE
1769    o seaice:
1770      - modify advection so that it works also on the C-grid
1771      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1772        problem in multi-tile runs with C-grid
1773      - add flags for clipping ice velocities and/or masking solver forcing
1774      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1775        C-grid solver
1776      - added a few comments to seaice_diffusion.F
1777      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1778        are now exclusive)
1779      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1780        required re-ordering the code a little:
1781       + make DAIRN global variable (defined in SEAICE)
1782       + move computation of the viscosities eta and zeta into a new separate
1783         routine (because I need to recompute them in seaice_ocean_stress.F)
1784    
1785    checkpoint58b_post
1786    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1787      update output.txt of exp. aim.5l_cs.thSI
1788    o various mnc cleanups and improvements:
1789      + shrink lookup tables by factor of ~4
1790      + better error reporting when running out of lookup space
1791      + able to handle longer path/file names (up to 500 chars)
1792    o adjoint:
1793      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1794      - TBD: "hidden" mom_vecinv recomp. in dynamics
1795    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1796     (allow to differentiate between forcing components using new integer flags:
1797      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1798     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1799    o ecco
1800      - enable trend removal from SSH anomaly obs.
1801    o adjoint
1802      - a fix for PmEpR when #undef EXACT_CONSERV
1803      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1804      - try to fix "hidden" recomp. in forward_step for NLFS
1805        (NLFS seems broken sometimes after I checked it in)
1806    o seaice:
1807     - add c-grid version of the dynamic solver:
1808       + three new routines that are the c-grid substitute lsr, dynsolver
1809         and ostres
1810       + put a few fields that were local to dynsolver into global common
1811         blocks, so that I can move the computation of stresses etc into
1812         seaice_lsr (saves coding but may break the adjoint).
1813     - replace more hardwired parameters by runtime parameters
1814     - add ice masks that mask the rhs of the implicit solvers where there
1815       is no ice (commented out in seaice_dynsolver, because i am not sure
1816       if this works properly), eventually this should replace the clipping
1817       of ice velocities in seaice_dynsolver to +/-40cm/s.
1818    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1819      include it only where its needed
1820    o move balancing of fluxes before the call of external_forcing_surf
1821    o seaice:
1822      - correct units of turning angles (now they are really in degrees)
1823      - move computation of GWATX/Y out of main routine into dynsolver
1824      - initialize GWATX/Y in seaice_init
1825    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1826      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1827    o seaice: add runtime flags for turning angles (default to zero)
1828    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1829      and trend from exf forcing and ctrl control adjustments
1830    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1831      (since checkpoint57x_post)
1832    o change the default rotation period to 86164.s = the Earth rotation
1833    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1834      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1835    o seaice advection: add code for choosing between the default (2nd order
1836      central differences) and multiDim advection schemes provided by
1837      pkg/generic_advdiff
1838    o seaice:
1839      - removed all references to SEAICE_GRID.h fields from
1840        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1841        (cubed-sphere configuration will change a little)
1842      - grid computations in seaice_init are obsolete now.
1843      - cleaned up code a little so that is easier to read (hopefully).
1844      - added new (better?) discretizations of default advection and diffusion
1845        (turn on with SEAICEuseFluxForm)
1846      - replace 1 in 3d global fields by kSurface in growth.F
1847      
1848    checkpoint58a_post
1849    o seaice:
1850      - bug fix in advect.F
1851    o shelfice:
1852      - separate shelfice load anomaly from pload (breaks with time
1853        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1854        Its default is 0., but it may be computed more cleverly from (unknown)
1855        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1856        done offline. A good approximation of the pressure load anomaly is
1857        necessary to avoid large initial adjustment processes underneath
1858        deep-reaching shelfice.
1859      - small fix in ISOMIP shelfice_thermodynamics
1860      - add more sophisticated thermodynamics of Hellmer (1989), this is
1861        now the default
1862      - give a few constants more intuitive names
1863    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1864      if bulk formulae are used in long integration (especially EmPmR). Turn
1865      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1866      if balancePrintMean, the imbalance that is substracted is printed to
1867      STDOUT.
1868    o fix bug (typo) in obcs_apply_eta.F
1869    o add a new package shelfice which enables us to model the circulation
1870      underneath shelf-ice with draughts of hundreds of meters.
1871     - works
1872     - to do: + include improved thermodynamics
1873              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1874                instead of new field kTopC
1875              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1876                instead of new field R_shelfIce and new code in ini_depth.F
1877                and ini_mask_etc.F?
1878              + adjust vertical mixing schemes?
1879    o seaice pkg:
1880     - add a cpp-flag to include a simple formula for a salinity dependent
1881       freezing point of sea water at the surface
1882     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1883       meridional stresses are now different (and hopefully correct)
1884    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1885       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1886       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1887    o pkg/diagnostics: add options and parameters for regional-statistics
1888       diagnostics ; define regions by reading a region-mask from a file
1889       (might add other options later)
1890    o pkg/bulk_force:
1891     - add option and parameters to use AIM surface-flux formulae.
1892     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1893       others forcing fields (defined in PARM05, parameter file "data") are loaded
1894       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1895     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1896     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1897     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1898       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1899     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1900    
1901    checkpoint58
1902    o add "--embed-source" option to genmake2 which, when the supporting
1903      tools can be compiled (as determined by genmake2) will turn on the
1904      embed_files package which then embeds the entire MITgcm source code
1905      (*.[fFhc] + Makefile) used for the build within the executable
1906      - requested by CNH but off by default
1907      - adds a paltry <9MB to the mitgcmuv executable in most cases
1908      - only writes the output when useEMBEDSRC in eedata is true
1909    o clean up 3-dim. relaxation codes:
1910      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1911      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1912      * Thanks to Tom Haine for testing!
1913    
1914    checkpoint57z_post
1915    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1916      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1917    o fix the pickup behavior for obcs in combination with ptracers
1918    o fix a bug in ptracers_external_fields_load
1919    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1920      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1921    o transfered surface NH pressure to eta field (if exactConserv).
1922    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1923         and update lab_sea output.txt file.
1924    o completing 3-dim. relaxation code: additional term
1925         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1926      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1927      * At compile time, in "EXF_OPTIONS.h" set
1928          #define  ALLOW_CLIMTEMP_RELAXATION
1929          #define  ALLOW_CLIMSALT_RELAXATION
1930      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1931          tauThetaClimRelax3Dim = 15552000.0,
1932          tauSaltClimRelax3Dim  = 15552000.0,
1933      * 3 cases:
1934          1) Use a constant-in-time 3-dim. field
1935          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1936          3) Real-time relax. to time-evolving prescribed field
1937    o Adding Laplacian-type smoothness constraint on
1938      initial and boundary (forcing) controls (ic, bc)
1939      * enable at compile-time via
1940        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1941      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1942      * Absolute scale somewhat unclear so far
1943      * no area weighting was included since no other cost term does so far
1944    
1945    checkpoint57y_post
1946    First step for a NLFS adjoint
1947    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1948    o new init. routines for calc_r_star, calc_surf_dr
1949    o still need to deal with ini_masks_etc
1950    o testreport seemed happy
1951    checkpoint57y_pre
1952    
1953    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1954    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1955    o add new offset feature to offline pkg (plus minor cleanup)
1956    o cfc fixes for final year of integration
1957    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1958      be in GCHEM_OPTIONS).
1959    
1960    checkpoint57x_post
1961    o fix testreport Pb in multiple test experiment.
1962    o cleanup our namelist syntax in verification:
1963      - make it more F95 standards compliant (some work still needed)
1964      - allows the vast majority of our tests to work with gfortran
1965    o Non-Hydrostatic:
1966     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1967     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1968    o Allow to apply AB on T,S rather than on AB(gT,gS):
1969     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1970     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1971       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1972     - need a "clever" read_pickup to restart from the other AB formulation
1973    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1974    o remove some unused variables (reduces number of compiler warnings)
1975    o adjoint
1976      * Disable useVariableViscosity for adjoint for time being
1977        (there are a number of extensive recomputations)
1978      * Initialize certain variables needed for adjoint
1979    
1980    checkpoint57w_post
1981    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1982                 fix the singleCpuIO RS version of MDSWRITEFIELD
1983       and add a WARNING if using globalFiles=T with multi-processors.
1984    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1985      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1986    o tracer advection scheme:
1987      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1988       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1989       was not very convenient).
1990      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1991       (further tests needed for the implicit DST & Flux-Limiter schemes).
1992    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1993      and sRef for convenience, handy, when you want to initialize
1994      ptracers in a large domain with a constant non-zero value. Also,
1995      untangle ptracers_init.F a little.
1996    
1997    checkpoint57v_post
1998    o change dome exp. to use variable viscosity in side-drag terms.
1999    o remove all the files from the cfc_offline test since they are now
2000      incorporated into tutorial_cfc_offline which has been producing
2001      identical results for a few days of testing
2002    o add new parameter: sideDragFactor to enable half-slip-side BC
2003      and change side-drag S/R to use viscosity from mom_calc_visc
2004      (can switch back by setting sideDragFactor=0.); affects results at
2005      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
2006       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
2007    o vorticity & strain are now computed without masking, to account for
2008      no-slip-side BC in variable viscosity calculation ; mask is applied
2009      anyway later on, before computing advection/coriolis terms.
2010    o modify exp4 to test new obcs support for reading from external files
2011      and for passive tracers
2012    o fix behavior of ptracers_monitor when monitor output is written to a
2013      netcdf-file; still not independent of monitor.F (writes in the same
2014      file).
2015    o change default value of tRef (put a uniform, meaningful value for ocean
2016      & atmos) and initialize sRef (was missing, as Martin mentioned).
2017    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
2018      to be proportional to enstrophy dissipation length.  Thus,
2019       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
2020      This is now consistent with Smagorinsky and with the manual.
2021    
2022    checkpoint57u_post
2023    o OBCS and PTRACERS: add open boundary support for passive tracers
2024      - either use homogenous (pseudo) v.Neumann conditions or prescribe
2025        OB-values from file; this is not different from the way theta and salinity
2026        are treated
2027      - however, Orlanski-radiation conditions are not supported, and the model
2028        will stop if you use pTracers and Orlanski at the same time.
2029      - beefed up the rountine obcs_external_fields_load: now only those open
2030        boundary values are overwritten with values from files for which there
2031        are really files, otherwise the OB-fields remain untouched. This makes
2032        it possible to use different OBs at different ends of the domain (as
2033        with EXF)
2034    o reduce number of exch calls in shap_filt (s2).
2035    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
2036      truncation level) 4/5 MLAdjust test results (11&12 digits match).
2037    
2038    checkpoint57t_post
2039    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
2040    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
2041      same truncation, independent of the face number: affects affects several
2042      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
2043    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
2044      note that biharmonic viscosity + no-slip was not tested in any experiment.
2045    o fix bug in non-linear free-surf side-drag ; generate new output for
2046      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
2047    o make mnc honor the writeBinaryPrec flag for most kinds of output
2048    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
2049    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
2050      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
2051    o add brackets in multi-terms sum to get same truncation, independent of
2052      the face number (manage to get exactly same value of gU,gV at the cs-edge)
2053      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
2054    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
2055      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
2056      a maximum grid-scale Reynolds number.  Also, changes all length calculations
2057      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
2058      Suggested values of viscosity parameters found in mom_calc_visc.
2059      Many new viscosity diagnostics available.
2060    
2061    checkpoint57s_post
2062    o Add clearing-house for viscosity calculations, mom_calc_visc and
2063      correct numerous bugs in LeithD and Smagorinsky discretizations.  
2064      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
2065      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
2066      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
2067      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
2068      The Strain-Tension form is now called with useStrainTensonVisc=.true.
2069      ViscAhStrain and viscAhTension are now retired.
2070    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
2071    o In response to JMC's bug report, genmake2 now ignores any soft-links
2072      that it finds in the *current* directory when searching for files.
2073      Soft-links found in any other source directories will still work as
2074      they did before.
2075    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
2076      a C routine to unlimit the stack size
2077    o mnc-ify pkg/aim snapshot vars
2078    o mnc-ify pkg/land as requested by Daniel
2079    o various changes to mnc including:
2080      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
2081      - output can now be grouped so that all files within a group
2082          change the ITER portion of their names in lock-step together
2083      - can now read ("global") PER-FACE (in addition to PER-TILE) files
2084          and works with both EXCH1 and EXCH2 (but needs more testing)
2085      - writing works for all verification test cases w/ g77 on Linux
2086    
2087    checkpoint57r_post
2088    o make MNC variable initialization happen earlier
2089    o add diagnostics for (almost) each term of the momentum Eq.
2090    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
2091    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
2092    o remove MINIMAL_TAVE_OUTPUT option ;
2093      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
2094    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
2095      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
2096    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
2097    o add time-dependent SST, SSS control
2098    o cost terms in ecco/ modularized (new cost_generic.F)
2099    o cost_averages routines are modularized (new cost_averagesgeneric.F)
2100    o new infrastructure for seaice model vs. obs misfits in seaice/
2101      * driver from the_main_loop.F is seaice_cost_driver.F
2102      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
2103      * gradient check in Exp. 6a of natl_box_adjoint/
2104    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
2105      (see README file)
2106    
2107    checkpoint57q_post
2108    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
2109    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
2110      - bug was reported by Jean-Michel and Ian Fenty
2111    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
2112      update exp. cpl_aim+ocn output.
2113    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
2114      Needed for high-res. runs with large global files
2115      to be able to limit tapelev size
2116    o Changed some tests for adjoint:
2117      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
2118      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
2119      * global_ocean.90x40x15/ back to default 3-level checkpointing
2120    o Modifications to enable scripted COMMON to MODULE conversion
2121      * verification/OpenAD/code/ has necessary scripts and description;
2122      * converts, compiles and runs successfully;
2123    
2124    checkpoint57p_post
2125    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
2126    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
2127      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
2128    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
2129    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
2130      (was already the case for dissipation with mom_vecinv,
2131       and also the case for grad.PhiHyd when staggered-timeStep)
2132      This will allow to put dissipation out-off the AB time-stepping.
2133     Unfortunately, affects truncation error. Update output of exp. that "fails"
2134      (cg2d matching number) and leave the others for later: front_relax(10),
2135      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
2136      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
2137    
2138    checkpoint57o_post
2139    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2140      (2) its ready to be documented during the 20050801 DocFest
2141    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2142      for ideal_2D_oce and lab_sea on linux_ia32_g77
2143    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2144      in global1x1_tot/code_seaice_adj to access indices 32, 33
2145      (worth another tag)
2146    
2147    checkpoint57n_post
2148    o adding precip control xx_precip 32
2149    o adding swflux control xx_swflux 33
2150    o Replacing 10 forcing penalty cost routines by 1 generic.
2151    o Implementing partitioning in time-mean and variable adjustment
2152      for atmos. state.
2153    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2154    o in natl_box_adjoint:
2155      * updated exp 1 to 10
2156        (but does not have time-mean vs. variable split results yet)
2157    o updated global1x1/*_seaice_adj/
2158      to incorporate latest changes
2159    o enable useSingleCpuIO for mdsio vector routines
2160      (applies in particular to tapelev I/O)
2161    o removed inefficient K-loop in all active_file*control*.F
2162    
2163    checkpoint57m_post
2164    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2165      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2166    o pkg/exch2: filling of face-corner halo regions is optional
2167      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2168    
2169    checkpoint57l_post
2170     tag before updating tutorials (pre-release-2)
2171    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2172       for output and interpolation of input fields onto model grid)
2173    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2174       Affects results of exp. rotating_tank ; update output.txt.
2175    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2176          and taking the square quantity and/or using a fraction-weight field.
2177    o fix aim_diagnostics_init.F mate numbers.
2178    o add mnc output capability to diagnostics/diagstat and update
2179      our cvsignore files for the ACSII output generated
2180    
2181    checkpoint57k_post
2182    o lab_sea now uses diagnostics package and provides a suite of
2183      new EXF diagnostics output.
2184    
2185    checkpoint57j_post
2186    o exf
2187      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2188        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2189        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2190      * extended diagnostics output
2191        - now includes all EXF variables
2192        - hs, hl moved to common block
2193        - separate S/R for diagnostics, called after ctrl vector is added
2194        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2195        - EXFqnet contains true Qnet (i.e. includes qsw)
2196      * updated verif. lab_sea, global_with_exf
2197      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2198        to ensure that diagnostics sees a true EXFqnet
2199    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2200    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2201      several times with different frequencies.
2202    o mnc-ify the thsice package as requested by Daniel Enderton
2203      - the monitor--MNC output needs work
2204      - many attributes need to be added (most are currently blank)
2205    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2206      - many attributes need to be added (most are currently blank)
2207    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2208    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2209    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2210      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2211         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2212    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2213     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2214    
2215    checkpoint57i_post
2216    o Diagnostics package was changed: diagnostic allocation is now deactivated
2217      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2218    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2219      add 1rst Order upwind vertical Shear.
2220    o add a quick fix for A/B checkpointing in OFFLINE mode
2221    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2222      end-run around the C/Fortran linking horror in eesup/src/timers.F
2223    o added pkg/runclock: allows user to terminate run based on wall clock
2224    o added non-hydrostatic scaling parameter: nh_am2
2225    o pkg/my82: futile attempt to make results compiler-independent by adding
2226      some "_d 0", etc. no effect.
2227    o for mnc output, fill the 'T' coordinate var with myTime and create a
2228      separate 'iter' variable for iteration count
2229    o pkg/diagnostics:
2230      add new capability: output of Global/Regional & per-level statistics ;
2231      tested against monitor output (including land & thSIce) on various exp.
2232    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2233    
2234    checkpoint57h_done
2235      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2236      data.diagnostics, data.gchem, data.ptracers) is done.
2237    
2238    o pkg/diagnostics: prepare for Global/Regional statistics.
2239      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2240    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2241      and rename it: DIFFERENT_MULTIPLE
2242    
2243    checkpoint57h_post
2244    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2245    o pkg/diagnostics: change output frequency, now in seconds (instead
2246      of Nb of iterations). This requires to change data.diagnostics.
2247    checkpoint57h_pre
2248    
2249    o in mnc, let the user create the output dir if both mnc_outdir_date
2250      and mnc_outdir_num are false
2251    o add fflags() to pkg/diagnostics which allows one to specify, on a
2252      per-file basis, the file precision [default behavior is unchanged]
2253    o added diagnostics to pkg/kpp, including computation of mixed layer
2254      depth based on a temperature/density criterion
2255    o updated verification/natl_box to test the new pkg/kpp diagnostics
2256    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2257    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2258    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2259      not mnc -- this mistake was found by JMC and is now corrected
2260    
2261    checkpoint57g_post
2262    o add Adams-Bashforth 3rd Order time stepping:
2263      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2264      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2265    checkpoint57g_pre
2266    
2267    o make lambda[Theta,Salt]ClimRelax spatially varying
2268      (default remains spatially uniform constant based on tau)
2269    o added new control variables
2270      * init. uVel, vVel, etanN
2271      * lambda[Theta,Salt]ClimRelax
2272    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2273      (suggested by G. Forget)
2274    
2275    checkpoint57f_post
2276    o add parameter "baseTime" = model base time = time at iteration zero
2277      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2278      account for baseTime shift
2279    o move Coriolis arrays from PARAMS.h to GRID.h
2280    checkpoint57f_pre
2281    
2282    o mnc-ifying the seaice package
2283    o introduced an alternative length scale calculation for use in the limiting
2284      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2285    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2286    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2287      as well as grad(vort3).  Made it compatible with both approximate form
2288      for the cubed sphere and full form of these gradients.  Added flag
2289      useFullLeith to select between approximate and full form.  
2290    o add "d0" in getcon.F to reduce differences between compilers/platforms
2291      update output.txt of exp. fizhi-gridalt-hs
2292    o change port_rand funtion to allow to set the seed.
2293    o fix obscure MNC bug involving conversion between reals and integers
2294      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2295        new version is now more standards-compliant
2296    o adjoint-related modifications
2297      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2298      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2299      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2300    
2301    checkpoint57e_post
2302    o Adding eddy stress controls a la Ferreira et al.
2303    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2304    
2305    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2306      update output.txt of exp. fizhi-gridalt-hs
2307    o add more "Z" dimensions and associated coordinate vars to MNC
2308    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2309    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2310      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2311      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2312      months and years.  Requires pkg/cal.
2313    o diagnostics: add pickup functionality
2314      - off by default for backwards compatibility
2315      - current version only uses MDSIO -- MNC will be added
2316    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2317    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2318    
2319    checkpoint57d_post
2320    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2321    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2322      output from the diagnostics package
2323    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2324    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2325      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2326    o add coordinate variables to the MNC output from the diagnostics package
2327    o change MNC-flags default value: true when useMNC=TRUE
2328    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2329      the ability (off by default) to read the grid information using MNC
2330    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2331    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2332    o do snap-shot diagnostics at the middle of the time-interval (instead of
2333      at the end).
2334    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2335      new test for AIM with thSIce + slab-ocean
2336    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2337    o move state variable diagnostics to the beginning of the time step ;
2338      (note: still needs some work specially for snap-shot diagnostics)
2339      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2340    
2341    checkpoint57c_post
2342    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2343    o generate new output.txt files on faulks with g77 & the new -ieee option
2344    checkpoint57c_pre
2345    
2346    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2347      update output.txt of exp. global_ocean.90x40x15
2348    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2349      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2350    o add saltFlux(+File) forcing capability with periodicExternalForcing
2351    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2352    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2353    o improvements for the MNC output from DIAGNOSTICS:
2354      - correct handling of the unlimitied dimension
2355      - all dims now have associated coordinate variables
2356      - variables located at U, V, and Corner ("Z") points are now written
2357        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2358        *all* data points are output
2359    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2360    o added pkg/seaice/seaice_monitor.F
2361    o mdsio_readfield.F can now read files visible only to master MPI process.
2362    o pkg/seaice: some test code for ice-modified ocean stress
2363    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2364      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2365      spurious negative numbers for precipitation and humidity.  Will cause
2366      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2367    o pkg/ctrl/
2368      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2369        May be enabled via doPackDiag
2370      *  introduce z-scaling of
2371         + gradient (doZscalePack) and
2372         + control (doZscaleUnpack)
2373    o pkg/mdsio/
2374      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2375      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2376    
2377    checkpoint57b_post
2378    o simplify options in diagnostics_fill arguments (remove weird combinations)
2379    o fix MNC coordinate variables so that they now contain per-face index
2380      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2381      general, EXCH2 grids are only aligned to a "local" coordinate system
2382    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2383    o Implement instantaneous output within pkg diagnostics:
2384      setting a negative frequency in data.diagnostics produces
2385     "snap-shot" output (as opposed to time-average if freq > 0)
2386    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2387      NOTE: change ptracer diagnostics name: use 2 characters to work with
2388            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2389    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2390      becomes the coordinate variable for the 'T' dimension
2391    o add CF-style coordinate variables to MNC
2392      - just a first cut:  numbers are meaningless on the cubesphere and
2393        missing along the T axis but otherwise it works!
2394    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2395    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2396    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2397      this is based directly on what the model compute, so that the content of
2398      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2399    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2400    o clean up build options files for SunOS, in particular
2401      - remove -traditional from xmakedepend
2402      - change -xarch=v9 to -xarch=native for f77
2403      - restore use of make (not gmake)
2404      - add CC=gcc if using g77
2405    o changes per discussion of AM, JMC, & EH3 today:
2406      - move redundant "grid" variables out of "state" -- in preparation of
2407        creating proper CF-style coordinate variables and in recognition
2408        that any/all grid variables can be easily copied (eg. w/NCO) from
2409        the grid files into any of the other NetCDF files
2410      - *always* output grid variables with MDSIO (this will eventually be
2411        changed)
2412      - output MNC grid file if useMNC is true
2413    o every instance of _END_MASTER() has been found and replaced with
2414      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2415      preprocessors
2416    o re-arrange diagnostics pkg initialisation:
2417     - allow each package to extend the available diagnostics list
2418     - add some checking and fix small problems (multi-threaded, ...)
2419     - new S/R diagnostics_fill (replace fill_diagnostics):
2420       look through the short list of active diag. (instead of the long list)
2421       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2422    
2423    checkpoint57a_post
2424    o this set of changes restores TAMC compatibility
2425      tested for global_ocean.90x40x15 adjoint on trough
2426      (what a pain)
2427    
2428    checkpoint57a_pre
2429    o some modifs in tools/build_options for sunos
2430    o call ctrl_pack for ctrl at end for optimcycle=0
2431    
2432    checkpoint57
2433    o add horizontal bi-harmonic viscosity for vertical velocity
2434      - new parameter viscA4W (defaults to viscA4)
2435      - affects only non-hydrostatic code
2436      - to be done: no-slip lateral boundary conditions
2437    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2438    o implement Implicit Vertical advection for pTracers
2439    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2440      (implemented also for implicit vertical diffusion & advection)
2441    o OBCS: extend application of tracer open boundary conditions
2442      to a strip beyond the boundary of width Olx/Oly
2443    o add call monitor to TAF set of required calls (flow directives)
2444      and include in natl_box_adjoint
2445    o untangle a few ifdefs related to cost, ctrl, autodiff
2446      untangel a few ALLOW_ECCO_OPTIMIZATION
2447    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2448      (theta2, salt2 in ecco_cost_weights)
2449    
2450    checkpoint56c_post
2451    o OBCS as control variables
2452      - update ctrl_ad_diff.list, obcs_ad_diff.list
2453      - remove balance of obcs controls from default
2454      - fix index bug nobcs in ctrl_init
2455      - fix dummy fields filen in ctrl_pack
2456      - add dummy weights for obcs
2457    o lsopt: comment out fort.94 output
2458    o optim:
2459      - remove unnecessary header files
2460      - adjusted namelists
2461      - add xerbla.F to Makefile
2462    o exf:
2463      - multiple modifications of exf_check_range
2464      - unit change in exf_init_runoff from [m/year] to [m/s]
2465    o mdsio:
2466      - i/o-vector change debugLevel from debLevA to debLevB
2467    
2468    checkpoint56b_post
2469    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2470      is called from DO_THE_MODEL_IO
2471      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2472      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2473      - clean up PTRACERS_WRITE_TIMEAVE a little
2474    o add another verification experiment that tests both the cfc-pkg and
2475      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2476      reactive tendencies treated inline with regular timestepping
2477    o testreport previously did a lousy job of comparing small numbers, so
2478      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2479      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2480      testreport.
2481    o ptracers_monitor: bug fix for MPI
2482    
2483    checkpoint56a_post
2484    o GCHEM: finish reorganizating the package
2485      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2486        (introduces another 3D-array for each passive tracer, but only if
2487        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2488        gchemTendency is not needed because the timestep is done separately)
2489      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2490      - GCHEM is now---more or less cleanly---separate from PTRACERS
2491      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2492        so clear to me how that should be done in a general way.
2493    o CFC: improve formatting of output in CFC_ATMOS
2494    o PTRACERS:
2495      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2496        that ALL experiments with ptracers enable can be checked. This makes
2497        GCHEM_MONITOR obsolete.
2498      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2499        monitorFreq
2500      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2501    o add PTRACERS (PTR0[1-5]) to testreport output
2502    o exf_check_range:
2503      * default changed to .TRUE.
2504      * will check values for niter0 if debLevA, every timestep if debLevB
2505      * STOP in exf_check_range if 'out of range'
2506      * range chosen generous to allow for potential extema
2507      TBD: a version with stricter range
2508           permitted range would be runtime parameters
2509    o GMredi:
2510      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2511      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2512      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2513    o GCHEM:
2514      - move call to GCHEM_FORCING_SEP, so that it is now called before
2515        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2516      - introduced a useGCHEM runtime flag and applied it everywhere.
2517      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2518        this flag is now only visible within GCHEM-pkg routines.
2519      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2520        be replaced by a 3D array that is computed before thermodynamics; for
2521        this, the tracer ID iTracer had to be included into the parameter list
2522        of ptracers_forcing
2523      - set up forward_step to call gchem_forcing, that will replace
2524        gchem_forcing_int in ptracers_forcing
2525      - cleaning up
2526    o small cleaning of exch2: remove files that are also in eesupp/src
2527    
2528    checkpoint56
2529    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2530    o mnc: cleanup "full" files--fixes out-of-memory problem
2531    o ECCO-GODAE
2532      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2533      * fully merged and updated from SIO code
2534        windstress sign change affects
2535        - exf_inscal_[u/v]stress
2536        - sign of xx_tau[u/v] adjustments
2537        - signs in cost_scat
2538      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2539      * natl_box_adjoint updated and compressed
2540      * 2-level checkpoint switch added
2541        (tested in EXP. 1 of natl_box_adjoint)
2542      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2543    o SVD
2544      * first complete, non-hacked version for SVD calculations
2545      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2546        performed via direct access files admtlm_vector.it????
2547        (via ctrl_[un]pack)
2548      * optimcycle is used for ARPACK iteration counter
2549        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2550      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2551        and add linear transforms where necessary
2552      * controls are initial/final SST, SSS (can be extended; need to check
2553        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2554    o mdsio: filename info to both stderr, stdout
2555    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2556      from sign change
2557    
2558    checkpoint55j_post
2559    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2560      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2561    o add consistent build directories and .cvsignore files to verification
2562    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2563    o make all subroutines 30 or less characters in length for certain older
2564      compilers to work (a thorough search only turns up two routines in
2565      pkg/ptracers)
2566    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2567      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2568    
2569    checkpoint55i_post
2570    o change arrays for total vertical diffusivity (2.D if explicit,
2571      3.D if implicit) ; each ptracer uses its own background value.
2572    o added mnc/NetCDF output capability to ocn_compon_interf
2573      - added bits to verification/cpl_aim+ocn so that it can run on
2574        ITRDA and other clusters without the mpirun "-wd" option
2575    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2576      configuration
2577    o give MNC the ability to create additional files rather than
2578      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2579      - the default is just less than 2GB which is a practical limit
2580        on many systems
2581    o Compute the non-local term using either KPP vertical diffusivity (=default)
2582       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2583    
2584    checkpoint55h_post
2585    o add verification test "vermix"
2586    o remove all the *_ioinc flags and replace with the single global
2587      outputTypesInclusive flag
2588    o allow to set a vertical profile of vertical diffusivity for T & S
2589    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2590    o useMNC moved from data.mnc to data.pkg
2591    
2592    checkpoint55g_post
2593    o Renaming carbon AD experiments to comply with testreport conventions
2594    o Updating adjoint of Held-Suarez hs94.1x64x5
2595    o Fixing directives for non-ECCO forward_step, after ECCO directives
2596      have been fixed to avoid recomp. of do_oceanic_phys
2597      Works well for global_ocean.90x40x15,
2598      but recomp. issue remains for carbon
2599    o Updating adjoint output for natl_box_adjoint after
2600      pkg/ecco has been modified (see taga c55d_post)
2601    
2602    checkpoint55f_post
2603    o rename to timeave_init_fixed
2604    
2605    checkpoint55e_post
2606    o some delicate re-shuffle of store directives to avoid one
2607      extra call of do_oceanic_physics
2608      affects ecco_the_main_loop.F, do_oceanic_physics.F
2609      checkpoint_lev1_directives.h
2610    o NB: this may break global_ocean adjoint temporarily,
2611      but it is clear how to fix it. Will do later, need this now.
2612    
2613    checkpoint55d_post
2614    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2615    o ecco_cost_weights is modified to 1x1 runs
2616    o modifs to allow observations to be read in as
2617      single file or yearly files
2618    o enable to read exf forcing fields as either
2619      single file or yearly files (flag useExfYearlyFields)
2620    checkpoint55d_pre
2621    
2622    o switch between 2-level and 3-level checkpointing
2623    o add ability of MNC to write local and "partial" (eg. 2D slices where
2624      the full 3D field is never actually stored) arrays to NetCDF files
2625      with the correct (that is, the complete multi-dimensional) set of
2626      array indicies
2627      - used in mom_vecinv() to write the diagFreq output
2628      - tested (demonstrated) in verification/aim.5l_cs
2629    o further mnc-ification
2630      - add verification/lab_sea to the list with mnc setups
2631      - fix undefined mnc v-names in cd_code
2632      - add kpp to mnc output (both snapshot and timeave)
2633    o non-hydrostatic code
2634      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2635        in calc_gw.F
2636      - defaults to viscAh
2637      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2638        friction or Leith) in non-hydrostatic mode, as long as there is
2639        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2640    o pkg/cost
2641      extend simple cost functions to treat time mean quantities
2642      (T,U,V) via cost_accumulate_state from cost_tile
2643    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2644        be 2 times larger than the minimum size the advection scheme requires.
2645        now get a perfect conservation of salt in advect_cs test-exp (updated)
2646    o GGL90 (Gaspar's TKE mixed layer)
2647      - add horizontal diffusion of TKE, requires exchanges in
2648        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2649        default. In OPA there is no horizontal diffusion of TKE but the
2650        mixing coefficients are computed from a horizontal average of TKE of
2651        6 points or so. I think that diffusion has a little more physical
2652        justification.
2653      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2654        was in vain)
2655      - mask tke-variable in ggl90_init
2656    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2657    o fix biharmonic diffusion on CS-grid.
2658    o more obcs stuff
2659      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2660        for reading boundary values. This routine is called from
2661        obcs_prescribe_read
2662      - updated obcs_check
2663      - changed sponge layer relaxation parameter units for days to seconds
2664      - turned off sponge layer by default
2665      - changed argument list of OBCS_CALC to myTime+deltaTclock
2666      - fixed about 35 bugs in obcs_external_fields_load
2667    
2668    checkpoint55c_post
2669    o obcs stuff
2670      - new runtime flags useOBCSprescribe, useOBCSbalance
2671      - re-arranged obcs_calc
2672      - moved exf_getobcs to obcs_prescibe_read
2673        obcs_prescibe_read is called after ORLANSKI stuff
2674        and independent of it (executable can contain all).
2675      - updated obcs_check
2676      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2677        These may be necessary only if tangential velocities are
2678        prescribed at OB, not sure, needs testing.
2679    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2680      which simplifies the calls and passes the ifc check-bounds test
2681    
2682    checkpoint55b_post
2683    o add a 2D scalar, Z location, exchange_2 routine.
2684    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2685      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2686      affects advect_cs results (for the wrong reason): update output.txt
2687    o use a more standard discretization for biharmonic viscosity ;
2688     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2689      affects results of dome set-up: update output.txt
2690    o fix gad_advection.F (CubedSphere part), back to version 1.23
2691    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2692    
2693    checkpoint55a_post
2694    o merged code to
2695      * prescribe/read time-dependent open boundaries
2696        (works in conjunction with exf, cal)
2697      * sponge layer code for open boundaries
2698      * each boundary N/S/E/W now has its own CPP option
2699        (healthy for the adjoint)
2700    
2701    checkpoint55
2702    o up-to-date adjoint of previous breaks
2703      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2704      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2705      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2706      - carbon: * remove tr1-related adjoint verification
2707                * add ptracer as control variable
2708    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2709      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2710    
2711    checkpoint54f_post
2712    o in verification/carbin/ remove experiment related to
2713      ALLOW_PASSIVE_TRACER (array tr1 etc)
2714      code_ad/ input_ad/ results_ad
2715    
2716    o add two new packages
2717      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2718        + subject to optimization (memory)
2719      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2720        + subject to reordering (many GOTOs in the original code)
2721        + so far opps is called for every (i,j) point, and then operates in
2722          the vertical; one may want to reorder the scheme in order operate in
2723          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2724          fields)
2725    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2726      - all verification tests compile and run with linux_ia32_g77
2727      - defaults are compatible with current input files--nothing
2728        should change if you were not previously using MNC
2729      - MNC output has been added in numerous places (eg. timeave)
2730        but there are still a few writes not yet do-able with MNC
2731        (this is in progress)
2732      - flags now allow for either/or/both use of MDSIO and MNC and
2733        documentation will soon follow
2734      - numerous small formatting cleanups for ProTeX
2735    o add version info (via BUILD_INFO.h) to MNC and stdout
2736    
2737    checkpoint54e_post
2738    o add two new packages
2739      - pp81 (Packanowski and Philander, 1981), Richardson number and
2740        stratification dependent mixing
2741      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2742      - these scheme operate in a similar manner as KPP (without ghat, of
2743        course), however there is only one diffusivity that is used for both
2744        temperature and salinity (and passive tracers)
2745    o add offline package
2746    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2747      provided by Stephanie Dutkiewicz
2748    o genmake2: add ability to search for C compilers and cleanup test output
2749      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2750    
2751    checkpoint54d_post
2752    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2753    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2754      leading to additional shift by 5 days each year of integration
2755       (i.e. leading to considerable offset over the years)
2756    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2757    o start with no AB and no initial filtering (staggerTimeStep):
2758      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2759    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2760      (external loading & cpl import/export stay in forward_step.F)
2761    o update coupling interface to work with new staggerTimeStep
2762    o change MDSIO ptracers_pickup.
2763    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2764    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2765    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2766    
2767    checkpoint54c_post
2768    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2769      this affects (truncation error) output.txt of test-exp:
2770       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2771    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2772    o change Qnet to always be the net heat flux, (+upward).
2773      affects (truncation error) output of natl_box exp.: updated
2774    o define the max number of passive tracers in PTRACERS_SIZE.h
2775    o start to test mnc routinely in exp0
2776    o add sea-ice loading (sIceLoad) as a new forcing field.
2777    
2778    checkpoint54b_post
2779    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2780       impressive on Altix and Opteron systems)
2781    o diagnostics can now write NetCDF files through the mnc package
2782    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2783    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2784    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2785      affects (truncation error) output of lab_sea & natl_box exp.: updated
2786    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2787    
2788    checkpoint54a_post
2789    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2790    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2791    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2792    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2793      + internal_wave (shift in writing cg2d_ini_res)
2794    checkpoint54a_pre
2795    
2796    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2797      - modified verification/lab_sea and natl_box_adjoint accordingly
2798    
2799    checkpoint54
2800    checkpoint53g_post
2801    o prepare splitting of thermodynamics: store convect.counter in common block
2802    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2803      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2804    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2805    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2806    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2807    o restore adjointability
2808    
2809    checkpoint53f_post
2810    o modifications that affect AIM experiment results (update output.txt):
2811      - no advection of S at top interface Nr (pkg/generic_advdiff)
2812      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2813    o AIM pkg:
2814      - include stability function into surf.Flux derivative relative to Tsurf
2815      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2816    
2817    checkpoint53e_post
2818    o merged cylindrical coord configuration
2819    o added rotating_tank experiment
2820    checkpoint53e_pre
2821    
2822    checkpoint53d_post
2823    o faulks upgraded: re-generate output.txt that have changed:
2824       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2825    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2826    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2827    o added Sadourny discretization of Coriolis
2828      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2829      - re-enabled use of omega3 (useAbsVorticity)
2830    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2831      vector-invariant equations
2832      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2833    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2834      hopefully without new bugs
2835      - still to do: biharmonic friction for non-hydrostatic w
2836    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2837    o regenerated output for global_ocean_ebm (using -ieee)
2838    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2839      of mom_common/
2840      - simple re-arrangement of instructions within computing loop
2841    checkpoint53d_pre
2842    
2843    checkpoint53c_post
2844    o new version of coupler for AIM+thSIce and Ocean models
2845     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2846     - land: change Evaporation of snow
2847     - aim with thSIce: fix bug in snow-precip.
2848    o changes to calc_gw.F
2849     - bug fix for w^2 term near the bottom boundary
2850     - (hopefully) improve the lateral slip boundary condtions for use with
2851        partial/looped cells
2852      - because the bug fix changes two verification experiments anyway (exp5
2853        and plume on slope), change the lateral boundary condition from half slip
2854        to the value of no_slip_sides
2855    o ebm package wasnt quite up to the parallel task. Fixed that.
2856    o Adjoint of EBM package + verification
2857      * TLM OK
2858      * ADM not sufficient accuracy yet (needs further testing)
2859    
2860    checkpoint53b_post
2861    o Commiting new energy balance model to repository
2862      * package is pkg/ebm
2863      * verif. is verification/global_ocean_ebm
2864      * references are in ebm_driver.F
2865    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2866    C        Global thermohaline circulation. Part I:
2867    C        Sensitivity to atmospheric moisture transport.
2868    C        J. Climate 12(1), 71-82
2869    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2870    C        Global thermohaline circulation. Part II:
2871    C        Sensitivity with interactive transport.
2872    C        J. Climate 12(1), 83-91
2873    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2874    C        Destabilization of the thermohaline circulation
2875    C        by atmospheric eddy transports.
2876    C        J. Climate 7(12), 1870-1882
2877    o Will need long integration testing.
2878    checkpoint53b_pre
2879    
2880    o created pkg/mom_common in preparation for variable viscosity code
2881    o renamed and split ini_mnc_io
2882    o pkg/land: only liquid water can diffuse or run-off
2883    o AIM using land: soil wetness availability account for snow
2884    o added printMapIncludesZeros to EEPARMS namelist
2885    
2886    checkpoint53a_post
2887    o restore TAMC compatiility for exf_constants.h
2888      (no usage of _d in .h)
2889    o Additional storing in KPP in an attempt to fix
2890      TAMC problem with adjoint of KPP code.
2891      (no success...)
2892      Identical code works fine with TAF.
2893    o Fixed verification/natl_box_adjoint experiments.
2894      Initial conditions for Experiments 4 and 5 are now
2895      set to "SEAICE_initialHEFF=0", which is more reasonable,
2896      and hence gives results closer to that of Experiment 2.
2897      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2898    
2899    checkpoint53
2900    o stable checkpoint with up to date adjoint
2901      TLM tests only run for 1st grdchk at the moment. Its unclear if
2902      this is a code problem or a problem with resetting code for g_
2903      variables that is being autogenerated wrong.
2904      Otherwise:
2905       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2906       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2907         are both still in chaos following their security messes.
2908    
2909    checkpoint52n_post
2910    o various build (mostly genmake2) changes including:
2911      - ability to build/run more easily within Cygwin and MacOS X
2912      - more complicated Makefiles with a stronger dependence on Gnu Make
2913    o pkg/seaice modifications
2914      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2915        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2916        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2917      - changed proxy for geostrophic velocity and updated
2918        verification/lab_sea/results/* accordingly
2919      - removed ADI dynamic solver from pkg/seaice
2920      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2921        they caused a segmentation fault under certain circumstances
2922      - removed unused field WATR
2923    o bug fix in exf-package:
2924      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2925         now reflect that.
2926    o small fixes in the cal-package:
2927      - set reference date to first of January for the 'model'-calendar
2928      - failing of cal_CheckDate in cal_FullDate now actually results in a
2929        warning
2930    o small modifications in exf-package to increase flexibility:
2931      - change climtempfreeze from a constant to a runtime parameter that
2932        is specified in data.exf_clim (default = -1.9)
2933      - introduce runtime parameter windstressmax (default = 2.0) that is
2934        specified in data.exf
2935    o fix in pkg/thsice:
2936      - update Evap (Tsf changes) to be consistent with Latent heat flux
2937      - maintain snow precipitation unchanged (even if Tsf >=0).
2938     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2939    
2940    checkpoint52m_post
2941    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2942      this does not change any of the results, because myIter=0 in swfrac always
2943      lead to jwtype=2 (the default anyway), but the call makes little sense
2944      as a default
2945    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2946    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2947      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2948    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2949    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2950    o extending useSingleCpuIO option to work with new exch2 I/O format
2951      - old-style, missing-tile I/O is still accessible by defining CPP
2952        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2953    o monitor package can write to NetCDF files and/or STDOUT
2954    o fix re-definition bug in MNC_GRID_INIT_ALL()
2955    o doc/api_reference added
2956      - a framework for building an API Reference Manual using all
2957        the "protex" comments embedded in the code
2958      - see pkg/generic_advdiff, pkg/mnc for examples
2959    o MNC:
2960      - make myThid the last argument for all subroutines
2961      - new default for the grid files: NO halos
2962      - add useMNC and other run-time flags
2963      - separate per-file-group handling of the unlimited dimension
2964      - early initialization of MNC w/ flags read at the eeboot stage
2965        and lookup tables set in initialize_fixed
2966      - write all MNC output to a freshly-created directory
2967    o thermodynamics sea-ice (thsice) is now tested with testreport.
2968    o test exp. advect_cs: use the standard cs32 grid ; update output.
2969    o Added functionality to grdchk:
2970      pick global i,j,k position (or nearest wet) where to perform check.
2971    
2972    checkpoint52l_post
2973    o new land formulation:
2974      a) use ground enthalpy as prognostic variable to ensure exact
2975         energy conservation.
2976      b) account for water temperature and for latent heat of freezing
2977         in all processes (rain, run-off, ground storage)
2978      c) compute surface and ground temperature implicitly.
2979    o aim_v23 modification for new land model:
2980      a) Treat separately land / ocean / sea-ice surface fluxes
2981         to allow implicit computation of land & sea-ice surface temp.
2982      b) add snow precipitation.
2983    checkpoint52l_pre
2984    
2985    o fix problem (when 1 tile is empty) in min/max monitor.
2986    o fix bug in timeAve (u,vZetatave in common block)
2987    o no restoring terms under ice for pkg/seaice
2988    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2989    o bug fix for pkg/seaice pickups
2990    o change MNC call locations and add coordinate attributes
2991    o mask vorticity at the corner ; affects global_ocean.cs output
2992    o fix ini_curvilinear_grid ; test CS experiments with mpi
2993    o aim.5l_cs: modify sea-ice fraction input file ; update output
2994    o exf: Adding simple range check routine for exf fields after read
2995    
2996    checkpoint52k_post
2997    o removed top-level directory "diags"
2998      - we migrated these functions to pkg/timeave a long time ago
2999    o fixed bug introduced in pkg/monitor
3000    o accuracy ctrlprec = 32 insuffient for gradient checks using
3001      averaged fields (I/O via cost_averages)
3002      -> use ctrl.h in active_file*.F to control I/O precision.
3003    o paramter list of CALL ADTHE_MAIN_LOOP
3004    o added initial do_the_model_io to ecco
3005    o set all ...Freq to zero after cost_final
3006      taveFreq, dumpFreq, pChkptFreq
3007    o MAIN and ECCO differentiability restored
3008    
3009    checkpoint52j_post
3010    o fix nchklev in tamc.h for global_ocean...
3011    o Bringing flow and store directives up-to-date
3012    o Really weird thing!
3013      call do_the_model_io from the_main_loop with parameters
3014      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
3015      TAF places a faulty re-call of initialise_varia
3016      after cost_final call which should not be there!
3017    checkpoint52j_pre
3018    
3019    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
3020      error messages
3021    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
3022    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
3023      debug output
3024    o modfied mdsio_writefield.F to handle non-global files under exch2
3025    o update AIM Cubed-Sphere exp (aim.5l_cs):
3026      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
3027    o update AIM Equatorial Channel exp:
3028      use standard aim_v23 pkg and change the SST fields to be more realistic.
3029    o globalFile now works with exch2
3030    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
3031      mon_vort3.F to make exch2 friendly with >1 tile per cube face
3032    o limit timeave output for hi-res integrations
3033    
3034    checkpoint52i_post
3035    o removed CPP_EEOPTIONS.h from verification/*/code
3036    o updated the tiling for global_ocean_pressure
3037    checkpoint52i_pre
3038    
3039    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
3040      the old pkg/aim).
3041    
3042    checkpoint52h_pre
3043    o shortened offending lines in exch2_send_rx?.template
3044    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
3045    o genmake2: add build & execute test for NetCDF code
3046    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
3047      old grid files, moved CPP_EEMACROS.h to pkg/exch2
3048    o added useSingleCPUIO flag to monitor.F and mon_out.F
3049    o added temporary hack for sea-ice dynamics on the cube:
3050      metric terms are ignored and it is assumed that
3051      there is no sea-ice on cube faces 1, 2, 4, and 5.
3052    
3053    checkpoint52f_post
3054    o added exch2 cube routines to pkg/exch2
3055    o modified hs94.cs-32x32x5 to use it
3056    o added new grid files to hs94.cs-32x32x5
3057    checkpoint52f_pre
3058    
3059    checkpoint52e_post
3060    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
3061      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
3062    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
3063      to work with implicit vertical advection and AB ;
3064    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
3065    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
3066     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
3067    checkpoint52e_pre
3068    
3069    o fix bug in impldiff when Nr=1 or Nr=2.
3070    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
3071    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
3072    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
3073      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
3074    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
3075    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
3076    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
3077    
3078    checkpoint52d_post
3079    o re-tiled many expts to allow comparison in multi-processor mode
3080      - updated output accordingly
3081      - changed hs94.128x64x5 to use intial T from file rather than use the
3082        random number generator
3083    o add infrastructure in model routines for fizhi and gridalt packages
3084    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
3085    o changes to permit hi-res, cubed-sphere, configuration
3086      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
3087      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
3088      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
3089        of surface winds for the cube
3090      (A verification experiment, based on global_ocean.cs32x15, but with
3091       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
3092       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
3093       complete with example surface forcing files and matlab scripts to look
3094       at the output and compare it with that of global_ocean.cs32x15.)
3095    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
3096       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
3097       to conform to the common rule.
3098    o check-in the first version of the coupler + interfaces for multi-components
3099       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
3100       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
3101       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
3102       - ocean and atmos. share the same horizontal grid (no interpolation).
3103       - exchanges between component and coupler is done in forward_step
3104    o new verification experiment, cpl_aim+ocn:
3105       coupled ocean - AIM atmosphere on cs32 grid.
3106    
3107    checkpoint52d_pre
3108    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
3109    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
3110    
3111    checkpoint52c_post
3112    o Fixing OPTIONS files for use of exf:
3113      - ALLOW_ECCO not needed
3114      - ECCO_CPPOPTIONS.h should not be included from
3115        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
3116        as has been the case in the past
3117      - All cal/exf related options are currently set in
3118        single header file. Should remain so until we
3119        agree on a consistent new policy.
3120    o Removed all CPP options for cal package.
3121      cal has no more CPP options.
3122    o modified STOREs in GAD_ADVECTION
3123    o corrected key comp. for passkey
3124    
3125    checkpoint52b_post
3126    o new version: "thsice" of thermodynamic sea-ice pkg:
3127     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
3128     - modify fluxes but do not change theta directly;
3129     - light cleaning of bulk_force pkg (still needed with thsice).
3130     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
3131       + output_thsice.txt to test thsice & bulk_force pkgs.
3132    o put back grid & coriolis monitor output.
3133    checkpoint52b_pre
3134    
3135    o call "do_the_model_io" at the beginning (=> dump initial state)
3136    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
3137    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
3138      (need info on NUMBER_OF_PTRACERS)
3139    o missing PTRACERS headers in some routines
3140    o default tamc.h in pkg/autodiff supposed to crash
3141      to ensure proper customization
3142    
3143    checkpoint52a_post
3144    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
3145      - moved surfaceTendencyTice from pkg/seaice to main code
3146      - subroutine FREEZE_SURFACE now limits only surface temperature
3147        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
3148        => new output.txt for global_ocean.cs32x15 & global_with_exf
3149      - keep the old version of FREEZE for backward compatibility;
3150        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
3151      - corresponding modifs for TAF directives
3152    o added surface flux output variables to TIMEAVE_STATVARS
3153    o time-averaged output for pkg/ptracers
3154    o fix problem with ECCO-related divided adjoint
3155      snapshot file was missing some ad-variables,
3156      but no warning issued by TAF
3157    
3158    checkpoint52a_pre
3159    o some bug fixes for #undef REAL4_IS_SLOW
3160    
3161    checkpoint52 = ecco_c52_e35
3162    o after testing adjoints of checkpoint51u_post
3163    
3164    checkpoint51u_post
3165    o this is the post-merge tag of the ecco-branch
3166      (needs another clean checkout and re-testing)
3167    o various natl_box_adjoint configs and results
3168      but no input fields
3169    o obcs adjoint not yet merged!
3170    o adding ECCO global 1x1 and 2x2 degree configs
3171    o updated/extended some store directives for seaice
3172    o pkg/ecco now containes ecco-specific part of cost function
3173    o top level routines the_main_loop, forward_step
3174      supersede those in model/src/
3175      previous input data.cost now in data.ecco
3176      (new namelist ecco_cost_nml)
3177    o in ctrl/ cleaned some cross-dependencies and updated CPP options
3178    
3179    checkpoint51t_post
3180    o this is the pre-merge tag of the ecco-branch
3181    
3182    checkpoint51s_post
3183    o cleanup: removed various obsolete #define-s
3184    o pkg/grdchk
3185      - renamed 'ph-grd 3' to 'grad-res'
3186      - merged from ecco-branch
3187        (remaining bug fixes for obcs gradient checks)
3188      - additional high-precision output for testreport
3189        (grep for 'precision_grdchk_result')
3190    
3191    checkpoint51r_post
3192    o cleaned up or removed CPP_OPTIONS.h files
3193    o updated results for some of the tests to reflect the new
3194      optfiles (-ieee: -O0 instead of -O3)
3195    
3196    checkpoint51q_post
3197    o cd_code:
3198      - moved cd_scheme.F -> cd_code_scheme.F
3199      - separate read_checkpoint from cd_code_ini_vars.F
3200      - separated cd_code part from write_checkpoint
3201      - updated AD_SOURCE, generated .flow
3202      - added CD_CODE_VARS.h to the_main_loop
3203      - Moving cd_code specific store dir.s to pkg/cd_code
3204    o ctrl package totally restructured
3205      - pack/unpack now optional and decoupled from
3206        xx_/adxx_ I/O
3207      - ctrl_pack/unpack cleaned
3208        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
3209      - confined inclusion of AD_CONFIG.h to where necessary.
3210    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
3211    
3212    checkpoint51p_post
3213    o create initial cd_code package
3214      - WARNING: the initialization of fields within packages
3215        is broken because INI_FIELDS (where READ_CHECKPOINT is
3216        called) is called *before* PACKAGES_INIT_VARIABLES.
3217        This seems to be backwards since
3218        1) its important to initially zero the entire field including
3219           the "halo" region
3220        2) zeroing needs to be done *before* reading pickup info
3221           and the pickup call might or might not happen in any
3222           particular run
3223      - this needs an overhaul for R2
3224    o cleanup verification/*/code/GMREDI_OPTIONS.h
3225    o cleanup testreport
3226    
3227    checkpoint51o_post
3228    o bringing AD-related verif's up to date with genmake2
3229      - carbon/
3230      - global_ocean.90x40x15/
3231      - hs.94.1x64x5/
3232      - (front_relax/ )
3233    o (more) consistent directory structure for AD-related verif.'s
3234    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
3235    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
3236    o bug fix in find_alpha.F for MDJWF:
3237      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
3238        change rho -> rho-rhoConst
3239      - replace call find_rho to find_rhonum
3240    o initialisation of rFlx extended to full array (required by TAF)
3241      and shifted to thermodynamics
3242    o removed PTRACERS.h in ptracers routine
3243    o added surfacetendencyPtr to S/R parameter list pracers_forcing
3244    o Correcting initialisations for fVerU, fVerV.
3245    o helping TAF to recognize dependency on kUp for
3246      fVerU, fVerV
3247    o Replacing delZ by delR in pkg/ctrl/
3248    checkpoint51o_pre
3249    
3250    o undid all of cp51 pending some cleanups and discussion
3251    o added the [#include "AD_CONFIG.h"] statement to all files that need
3252       it for adjoint/tl #defines
3253     o re-worked the build logic in genmake2 to support AD_CONFIG.h
3254     o removed tools/genmake since it no longer works
3255    
3256    checkpoint51n_post
3257    o modifications to make FREEZE flux visible to pkg/kpp
3258      - moved surfaceTendencyTice from pkg/seaice to main code
3259      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
3260      - subroutine FREEZE now limits only surface temperature
3261        (this means new output.txt for global_ocean.90x40x15,
3262         global_ocean.cs32x15, and global_with_exf)
3263    o added surface flux output variables to TIMEAVE_STATVARS
3264    
3265    checkpoint51n_pre
3266    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
3267    o added [#include "AD_CONFIG.h"] to all files that use the following
3268      defines:
3269      - ALLOW_ADJOINT_RUN
3270      - ALLOW_TANGENTLINEAR_RUN
3271      - ALLOW_ECCO_OPTIMIZATION
3272    
3273    checkpoint51m_post
3274    o incorporating changes to get TAMC/TAF working in genmake2
3275      - added new TAMC/TAF targets to the Makefile
3276      - various cleanups related to package handling
3277      - these changes should have no impact on the forward model
3278    
3279    checkpoint51l_post
3280    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
3281     - faster algorithm for cal_addtime.F
3282     - higher precision arithmetic, where needed
3283     - pkg/exf *startdate variables changed from calendar date to
3284       model integration time
3285    
3286    checkpoint51l_pre
3287    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
3288    o enable to apply restoring on S & T only in a latitude band.
3289    o update output (external_forcing_surf modif. change truncation errors)
3290       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
3291    
3292    checkpoint51k_post
3293    o change default to: useNHMTerms=.FALSE.
3294     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
3295       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
3296     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
3297        exp1, ideal_2D_oce
3298     - change data file of oceanic exp (leave the results unchanged for now)
3299       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
3300    o set gravitySign automatically according to the vertical coordinate used
3301      (and change sign: back to "logical" value: +1 when R increases downward)
3302    o added an include barrier to the default CPP_OPTIONS.h and
3303      removed the #include "PACKAGES_CONFIG.h" from it
3304    o fix a bug in mom_fluxform (from chk51j_post)
3305    
3306    checkpoint51j_post
3307    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
3308    o adjusted some flow directives (dynamics, thermodynamics)
3309    o added cubed-sphere case to test cost function
3310    o heckpoint_lev?_directives.h now include
3311      pkg-specific directives, whenever those are enabled.
3312    o Moving pkg-specific flow directives to corresponding pkg
3313      Moving pkg-specific differentiation list to corresponding pkg
3314      Moving pkg-specific checkpoint-lev storing to corresponding pkg
3315      ---> conventions are
3316           - pkg_ad.flow
3317           - pkg_ad_diff.list
3318           - pkg_ad_check_lev?_dir.h
3319    
3320    checkpoint51i_post
3321    o merge of the branch-genmake2
3322      - knowingly breaks the older genmake
3323      - automatic generation of all ALLOW_${PKG_NAME} defines
3324      - new testreport supersedes older testscript
3325    o large number of package inclusion and header cleanups
3326    checkpoint51i_pre
3327    
3328    o new output for adjoin of global ocean vector invariant
3329    o fix for checkpoint of thermodynamic seaice and bulk_force
3330    o Steph gchem various cleanups
3331    
3332    checkpoint 51h_pre
3333    o fixed some single quotes
3334    o modify gchem pkg to be more versatile
3335    o modifications to clean up dic pkg
3336    o add pkg/cfc
3337    
3338    checkpoint51g_post
3339    o provide links for ARPACK and ADM*TLM
3340    o start removing verification/vero/
3341    o update AD-related stuff
3342      (in particular some IF-statements in model/src/ routines)
3343    o adding to verification/global_ocean.90x40x15/ adjoint of
3344      vector invariant setup
3345    
3346    checkpoint51f_post
3347    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
3348    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
3349      of tracer Green's fucntions for ocean inversion project.
3350    
3351    checkpoint51f_pre
3352    o Added on-the-fly spatial interpolation capability
3353        "USE_EXF_INTERPOLATION" to pkg/exf.
3354      - This is a temporary Cartesian-grid hack until
3355        the super-duper ESMF coupler becomes available.
3356      - See verification/global_with_exf/README for usage example.
3357      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
3358        flags and modified pkg/seaice accordingly.
3359    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
3360        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
3361        non-local transport term.
3362    
3363    checkpoint51e_post
3364    o pkg/mom_vecinv:
3365      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
3366      - add time-ave diagnostic of vorticity advection.
3367    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
3368    o atmospheric geopotential: - include water vapor effect;
3369                                - use p^kappa in p* scaling.
3370    o land pkg: read initial state from files.
3371    o AIM : add stratospheric drag in the upper level
3372    
3373    checkpoint51d_post
3374    o change function ILNBLNK (=> last non-blank char.) to return zero
3375      (instead of the string length) when the string. char is empty
3376    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
3377    o modif's to restore TAMC compatibility
3378      - avoid "_d" constructs in PARAMETER declarations
3379      - avoid interrupting lines by comment lines
3380    o Use cluster local disks for purely local I/O
3381      vs. globally visible disks needed for ctrl stuff
3382      (merged from ecco-branch)
3383      - new active_file_loc... and mdsio_..._loc routines
3384      - affected packages: autodiff, ctrl, grdchk, mdsio
3385    
3386    checkpoint51c_post
3387    o introducing integer flag debugLevel
3388      - debLevZero: suppress all output
3389      - debLevA: standard
3390      - debLevB: equivalent to current debugMode=.TRUE.
3391    o introducing pathname variable mdsioLocalDir for mdsio
3392      that can be specified at runtime
3393      (relevant for cluster I/O to local disk)
3394    `
3395    >>>checkpoint51b_post
3396    adjoint of ptracers
3397    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3398    o extended state in checkpoint_lev?, etc.
3399    o alternative ctrl/cost with tr1 or ptracer
3400    o new comlev1_bibj_ptracers
3401    o new ptracers.flow
3402    o made ptracers_forcing same as external_forcing_s
3403    o added verification for adjoint with ptracers
3404      - adm. grdchk fail so far
3405      - tlm. grdchk OK
3406      - checked tapelev/comlev recomputations: OK
3407    <<<checkpoint51b_pre
3408    
3409    checkpoint51a_post
3410    o added code for biogeochemistry package
3411      - new pkgs: dic, gchem
3412      - new subroutine in ptracers
3413    o modify code for biogeo packages
3414      - in model/src and pkg/ptracers
3415    
3416    checkpoint51
3417    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3418      - autodiff, ctrl, exf, grdchk, seaice
3419      kept separate packages
3420      - cost, ecco, obcs
3421    o updating verification/internal_wave, verification/lab_sea
3422      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3423    
3424    checkpoint50i_post
3425    o Preparing next differentiable checkpoint and sync
3426      of MAIN vs. ecco-branch
3427      - 1st step: this one is differentiable
3428      - 2nd step: next(! not this) checkpoint will have updated packages
3429                  from ecco-branch)
3430    
3431    checkpoint50h_post
3432    o new package "land": provide surface BC for AIM.
3433    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3434    o AIM: use true log-P extrapolation for near surface temp (= as in
3435        F.Molteni paper) ; update aim.5l_cs output.
3436    o New variable in PARM03 for more flexible pickups
3437    o somewhat cleaned package initialisation sequence for
3438      ctrl/ cost/ ecco/ in packages_... routines
3439    
3440    checkpoint50g_post
3441    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3442      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3443      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3444        made the default because of faster convergence than ADI
3445    
3446    checkpoint50f_post
3447    o exf totally restructured
3448      - replaced all exf_set_ routines by one generic exf_set_gen.F
3449        and made sure it's still differentiable
3450      - split exf_getffields.F into new exf_bulkformulae.F
3451      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3452      - updated adjoint/makefile and relevant verif. accordingly
3453    
3454    checkpoint50f_pre
3455     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3456          + change Evap over land. (update aim.5l_cs output)
3457     o added missing .cvsignores and made uniform across expts
3458     o changed configuration of tidal_basin_2d expt
3459     o added pkg/debug functions for tracing code in fatal crashes
3460     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3461     o new fn in pkg/monitor to stop model if solution grows too big
3462     o removed lots of single quotes from comments
3463    
3464    checkpoint50e_post
3465    o make KPP work with PTRACERS
3466     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3467       nearly a copy of kpp_transport_s
3468     - there is no analogue to SurfaceTendencyS, so I have to use
3469       gPtr(of the surface layer) instead
3470    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3471    checkpoint50e_pre
3472    
3473    checkpoint50d_post
3474    o change kpp output from multiple-record state files to single-record state
3475      files analogous to write_state.F
3476    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3477      analogous to the cg2d-related output.
3478    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3479      so that writing to internal file fn (with length 512) fails.
3480    checkpoint50d_pre
3481    
3482    checkpoint50c_post
3483    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3484    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3485    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3486    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3487    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3488    
3489    checkpoint50c_pre
3490    Merging from release1_p13:
3491    o bug fix for pkg/seaice dynamic solver
3492    o Added SEAICE_initialHEFF to pkg/seaice
3493    
3494    checkpoint50b_post
3495    o store u*,v* in gU,V instead of in guNm1,gvNm1
3496    o in order to put the momForcing out of the Adams-Bashforth:
3497      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3498      to timestep.F
3499    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3500    o re-generate output for highly sensitive test-exp:
3501       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3502    
3503    checkpoint50b_pre
3504    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3505    o corrected CPP option mismatch in exf_Bulk... functions for case
3506      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3507    
3508    checkpoint50a_post
3509    o Bug fix for merging between c50 and KPP.
3510      ikey was passed from thermodynamics to kpp_calc via
3511      common block rather than being recomputed in kpp_calc,
3512      in contradiction with new key itdkey.
3513      New key ikppkey created, and tamc.h headers updated.
3514    
3515    checkpoint50
3516    - 2nd step of merge with ecco-branch:
3517      merge changes in ecco-branch back into main trunk
3518    - bug fix in find_alpha
3519    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3520    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3521    - merged some sliced AD support routines
3522    
3523    checkpoint49
3524    merged from ecco-branch:
3525    o exf:
3526      - Enable initialisation of forcing fields to constant
3527        (runtime) values.
3528      - in exf_getffields.F
3529        Reduce i-/j-loop to interior domain, discarding overlaps.
3530        That also fixes wrong TAF-key computations for key_1, key_2
3531        with bulf formulae.
3532      - exf_init.F modify #ifdef for exf_init_evap
3533      - exf_getffieldrec.F, ctrl_getrec.F
3534        The following INT-usages are not safe:
3535          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3536          fldcount = int(fldsecs/fldperiod) + 1
3537        and were modified.
3538    o autodiff: checkpoint_lev...
3539      - updated storing for bulk formulae (some arrays were missing)
3540      - added state for seaice package
3541      - synchronized with main branch
3542    o DIVA:
3543      Modif.s in
3544      - the_main_loop.F
3545      - the_model_main.F
3546      and added cost_final_restore.F cost_final_store.F
3547      o With these changes, it is possible to fully separate
3548        the first forward run to compute the cost function (mdthe_main_loop)
3549        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3550        into separate model executions.
3551        This enables better tuning of DIVA to given queue sizes.
3552      o Loss of cost function value in consecutive DIVA runs is
3553        fixed by storing to 'costfinal' file.
3554      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3555        beginning/end of adjoint integration is accounted for.
3556      The current changes apply to TAF-1.4.26.
3557      TAF has one remaining bug, requiring one manual change
3558      (see MITgcm manual).
3559    o cal: synchronized between MAIN and ecco-branch
3560    
3561    checkpoint48i_post
3562    o Changes to restore differentiability of code w.r.t. previous tag
3563      (mostly adding new routines to make list and replacing
3564      pressure by totPhiHyd).
3565    o Updated and merged grdchk package
3566      - has both ADM and TLM checks
3567      - works for single- and multi-proc.
3568      - output cleaned
3569      - worked successfully for parallel DIVA
3570    o genmake:
3571      - Adding -platform=SP4
3572      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3573    o Modif. for DIVA:
3574      ctrl_unpack should not be called in intermediate DIVA interval.
3575      (similar thing would apply for active files such as
3576      tbar, sbar, psbar, which should not be reinitialised;
3577      only relevant for ecco-branch)
3578    
3579    checkpoint48h_post
3580    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3581    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3582    o Added SEAICE_initialHEFF to pkg/seaice
3583    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3584    
3585    checkpoint48g_post
3586    --- EOS:
3587    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3588      store total Potential in totPhyHyd for diagnostics & EOS.
3589    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3590    --- Pressure/geopotential gradient:
3591    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3592    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3593      ( changes results of global_ocean_pressure )
3594    o NLFS + z-coord.: add eta*Rho' contribution.
3595    o accurate phiHyd when using interface-W at the middle between 2 centers
3596     ( changes results of ideal_2D_oce )
3597    o includes r* 2nd term in potential gradient.
3598    
3599    checkpoint48f_post
3600    Merging from release1_p12:
3601    o Modifications for using pkg/exf with pkg/seaice
3602      - improved description of the various forcing configurations
3603      - added basic radiation bulk formulae to pkg/exf
3604      - units/sign fix for evap computation in exf_getffields.F
3605      - updated verification/global_with_exf/results/output.txt
3606    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3607      (SBO) core products, including oceanic mass, center-of-mass,
3608      angular, and bottom pressure (see pkg/sbo/README.sbo).
3609    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3610      to avoid negative values in shallow regions.
3611      - updated verification/natl_box/results/output.txt
3612      - updated verification/lab_sea/results/output.txt
3613    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3614    o Added useSingleCpuIO option (see PARAMS.h).
3615    o Updated useSingleCpuIO option in mdsio_writefield.F to
3616      work with multi-field files, e.g., for single-file pickup.
3617    o pkg/seaice:
3618      - bug fix in growth.F: QNET for no shortwave case
3619      - added HeffFile for specifying initial sea-ice thickness
3620      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3621    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3622      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3623    o pkg/seaice:
3624      - adjoint-friendly modifications
3625      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3626    
3627    checkpoint48e_post
3628    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3629    o dynamics: change definition of computational domain & adapt mom_fluxform
3630      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3631    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3632        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3633        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3634        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3635        inverted_barometer solid-body.cs-32x32x1
3636      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3637    
3638    checkpoint48d_post
3639    o in preparation for r*:
3640     a) use pre-computed gradient of hydrostatic potential:
3641        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3642     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3643        => affects results of glob_oce_pressure (different truncation error)  
3644      update output.txt of ideal_2D_oce & global_ocean_pressure
3645    
3646    checkpoint48d_pre
3647    o in preparation for r*:
3648      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3649      pass the 2 comp. of the grad. as arguments to momentum S/R.
3650      but for the moment, only used if it does not change the results.
3651    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3652    
3653    checkpoint48c_post
3654    Modifications in treatment of initial flux forcing controls
3655    to avoid extra storing of flux fields.
3656    
3657    checkpoint48c_pre
3658    o Added tidal_basin_2d experiment (currently 1D!)
3659  o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)  o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3660    
3661  checkpoint48b_post  checkpoint48b_post

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