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revision 1.66 by jmc, Tue Mar 5 15:36:06 2002 UTC revision 1.1171 by jmc, Thu Oct 8 22:10:00 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 allows to specify vertical profile of vertical viscosity (viscArNr)
8    o pkg autodiff
9      autodiff_ini_model_io: comment out writing of grid information to netcdf
10      files, because at this time the grid fields are a bunch of zeros
11      (this is analogous to ini_mnc_vars.F)
12    o pkg seaice/autodiff:
13     left-over from removing the 3-time-level fields:
14     - small rearrangement of common blocks (SEAICE.h)
15     - fix field declaration in order to get meaningful output in
16       adseaice.*.nc (adcommon.h)
17    o pkg obcs:
18     - go through NH code only if nonHydrostatic=T
19     - fix restart for Orlanski (Hydrostatic; still to fix NH+Orlanski restart)
20     - move call to OBCS_CALC before SEAICE_MODEL which needs seaice-obcields
21       => Update output of experiment seaice_obcs
22     - useOBCSbalance: code is wrong with multi-tile / proc: add a stop.
23     - fix NH+Orlanski restart (add wvel OBC value in pickup file)
24     - fix restart for useOBCSprescribe + useEXF
25    o pkg ctrl
26     - make obcs as control parameter work also with useSingleCPUio
27     - replace a few sny and snx by Ny and Nx to be consistent with
28       ctrl_set_globfld_x/yz.F
29    o pkg seaice
30     - re-introduce global field frWtrAtm for the case of
31       ALLOW_MEAN_SFLUX_COST_CONTRIBUTION defined (SEAICE.h, seaice_growth.F)
32     - catch the case of an empty filename in seaice_cost_init_fixed.F
33    o pkg ecco:
34     - small bug fixes in the_main_loop
35      . fix order of monitor arguments
36      . change SEAICE_MULTILEVEL to SEAICE_MULTICATEGORY
37      . move include DYNVARS.h up outside the ALLOW_AUTODIFF_TAMC block so
38        that ALLOW_ECCO_FORWARD_RUN works with NONLIN_FRSURF
39     - replace cos(yc*deg2rad) by _rA in cost_mean_heat/saltflux.F, fix the
40       imbalance diagnostics for wmean_h/sflux = 0
41     - add actual values to f_obcsn/s/w/e in ecco_cost_final.F
42     - catch the case of empty filenames in ecco_cost_init_fixed.F
43       and ecco_readparms.F
44     - fix the logic of wsalt=0.and.wsalt2=0 to wsalt=0.or.wsalt2=0 (and theta)
45       to make this statement meaningfull in ecco_cost_weights.F
46    o pkg zonal_filt:
47      - change ZONAL_FILTER S/R interface (allows to filter 2-D fields)
48      - when using rStar, filter uVel*hFacW instead of uVel
49       (tested without topography: fix a Pb of growing instability with NLFS)
50    o pkg/aim/thsice:
51     -Add capacity to read a Q-Flux to be applied in slab-mixed layer thsice_slab_ocean.F
52      (works as SST restoring)
53    o pkg/thsice:
54     -add specific parameter for salt restoring in slab mixed-layer
55       (by default equal to the temperature restoring)
56    
57    checkpoint61v
58    o pkg/kpp:
59     -add double diffusive contributions as a hack, turned off by default
60      for now, and the code can be excluded with a CPP-flag
61      EXCLUDE_KPP_DOUBLEDIFF just as EXCLUDE_KPP_SHEAR_MIX
62     -add a verification experiments to "vermix" to test this code
63    o pkg/mom_common:
64      Move computation of length scales to mom_init_fixed.F (avoid recomputation
65      at each time-steps*levels).
66    o pkg/layers:
67      Created a new package for computing volume fluxes in temperature or
68      [not yet implemented] density layers, e.g. for calculating residual
69      overturning circulations.
70    o pkg/diagnostics:
71      implement a RS type version for the set of DIAGNOSTICS-FILL subroutines
72    o fix few RS/RL type mismatch (check with ifort 11.1 "-warn all" option)
73    o pkg/mdsio (& pkg/rw): rework high level S/R interface:
74      To avoid mixing type (RS/RL) of input/output array argument,
75      replace single mixed-type array with a pair from each type (RS/RL).
76    o setting pickupSuff force to start from a pickup (even if nIter0=0): this
77      is now implemented for all pkgs (previously only done for the main pickup)
78    
79    checkpoint61u
80    o pkg/obcs:
81      - change OB?eta from _RS to _RL and put them into a separate commen block
82      - add code to read OB?eta from a file via obcs_prescribe_read: the code
83        compiles and does not destroy any other experiments, the data is read
84        properly, but the code is not tested in actual applications
85    o ini_mnc_vars.F: if available (ALLOW_CAL), use startTime_1 and 2 to
86      create a meaningful unit attribute for the time coordinate variable
87    o pkg/ebm: add plenty of missing "_d 0" ;
88       update results of experiment global_ocean_ebm (fwd + adjoint tests)
89      Notes: several pieces of code only works for (very) specific set up
90       (domain size, lat range, etc ...); should be documented & stop if one
91       of those assumptions is not meet.
92    o pkg/seaice: add missing "_d 0" in HSNOW initialisation
93       update results of experiments: lab_sea (3 fwd tests + 2 adjoint tests)
94          and offline_exf_seaice (seaicetd + adjoint).
95    o add missing "_d 0" in ShortWave flux penetration (S/R SWFRAC):
96       update results of experiments: lab_sea (4 fwd tests + 3 adjoint),
97        seaice_obcs, global_ocean.cs32x15 (icedyn & thsice) and natl_box (x2).
98    o few changes to pass when compiling with strick checking of arguments
99       across S/R (allow to find few bugs in S/R calls).
100    o pkg/seaice:
101     - seaice_evp: move if-statement out of loop (TEM) at the cost of 11 new
102       2d-fields, for slightly better performance
103    
104    checkpoint61t
105    o pkg/seaice:
106     - remove unused variables in seaice_evp
107     - reduce number of SQRT in seaice_evp and seaice_calc_viscosities
108    o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
109       named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
110       each processor opens a different file (a fix from Matt).
111    o cg2d:
112       use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
113       this reduces number of EXCH calls by 2 when using exch2.
114       For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
115       directives and missing simple EXCH (exch_s3d_rx) adjoint code.
116    o pkg/thsice:
117       add code for Near Infra-Red albedo (from Jeff)
118       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
119    o ini_model_io:
120       move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
121       MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
122       to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
123    
124    checkpoint61s
125    o pkg/exch2 (exch2_rxN_cube*):
126       remove last BARRIER (no need to synchronise after getting data from shared
127       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
128    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
129      and generate new output (for the 2 tests) using default rotationPeriod.
130    o pkg/exch2:
131      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
132        (was already the case with AUTODIFF_EXCH2 defined)
133      - add bj in exch2 arrays and S/R.
134      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
135        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
136    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
137      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
138        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
139      - verification experiment natl_box.longstep
140    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
141      allow different versions of ifort (8 or 9) and different versions
142       of mpi (mpich or mpich2) to be used with the same optfile.
143      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
144       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
145    o pkg/seaice:
146      fix previous modif (3-level field removed) for old-pickup reading
147    
148    checkpoint61r
149    o pkg/seaice:
150     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
151      1. introduce fields for time step (N-1)
152      2. do not use levels 2 and 3 anymore (but keep them)
153      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
154         includes changes to pkg/thsice/thsice_get_velocity.F,
155         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
156         pkg/obcs/obcs_apply_uvice.F.
157     - completely remove code for leap-frog time stepping for second order
158       advection
159     - adjusted adjoint accordingly;
160       gradient checks have improved by an order of magnitude!
161    
162    checkpoint61q
163    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
164     - the boundary conditions along open boundaries are unclear, because the
165       associated masks are set to zero and are thus treated as closed when
166       applying the slip-boundary conditions.
167     - move initialisation of grid variables from seaice_init_varia to _fixed
168    o adding doc/diags_changes.txt
169    o model/src:
170      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
171       to avoid "_diags" naming if no relation to pkg/diagnostics.
172      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
173       file and only call PLOT_FIELD_XYZ if debugMode=T.
174      remove few PLOT_FIELD_XY calls outside initialisation.
175      remove few unnecessary BARRIER.
176    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
177      of salt_plume package in Southern Ocean
178    o pkg/thsice:
179     - fix hOceMxL in overlap (needed for sea-ice advection);
180       update output of experiment global_ocean.cs32x15.icedyn.
181    o pkg/seaice:
182     - make the (placeholder-)tracer IceAge a little more meaningful
183      by avoiding ridging of age due to convergent ice flow
184     - add diagnostics for surface temperature, atmospheric and oceanic
185       heat flux, and atmospheric and oceanic ice growth
186    
187    checkpoint61p
188    o eesupp (global_max & global_sum):
189     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
190     - remove starting & endding barrier (no longer needed)
191    o pkg/mdsio, writelocal:
192       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
193       (remove the STOP): uses shared buffer IO to store data from all threads
194       and then let master-thread write nThreads tiles.
195    o pkg/mdsio (read/write field):
196     - tiled IO done in 1 piece (all levels at a time);
197     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
198     - multi-threaded: allow to read/write local (non-shared) array
199       (was already working with singleCpuIO ; now works also without);
200       => no longer needs barrier call after reading a file (added inside
201       mds_read/write field).
202     - move barrier calls outside gather/scatter_2d to mds_read/write_field
203    o pkg/obcs/exf
204      - exf_getffieldrec.F: add a few ". _d 0" and
205                            add code to catch the case fldperiod = 0.  
206      - obcs_precribe_read.F: change if statements so that they match
207                              the variable type (_RL)
208      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
209        exf_iprec) as part of namelist EXF_NML_01
210    o pkg/mdsio:
211      - read/write tiled (local) files: read/write 1-level tile chunk at a time
212        (instead of segment of length sNx); expected to speed up tiled IO.
213    o pkg/exch2:
214      - take buffer copy from/to array out of S/R exch2_send/recv into new
215        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
216        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
217      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
218      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
219        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
220        including Topology header file (and common blocks).
221      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
222        remove 2nd exch call in exch2_s3d_rx (no longer needed).
223      - document S/R arg. list (+ update some comments)
224    o pkg/seaice:
225      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
226        temperature and humidity over sea ice based on climatological values.
227      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
228        of LSR (this change is expected to change the results slightly because now
229        it uses slightly difference moduli from the second last LSR solution, but
230        that is more consistent with the stress computations; this part of the code
231        is not tested in the verification experiments)
232      - fix diagnostics for flux of ice in case of B-grid
233      - turn strain rates eij and press into global fields within global
234        common block in SEAICE.h for more straighforward diagnostics
235      - fix diagnostics for principal stress components, press, zeta, eta
236        to give something meaning full
237    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
238      new output (all 4 tests) using default rotationPeriod.
239    o pkg KPP:
240      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
241      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
242        and normal grid from 1 to Nr)
243    o Fix computations of L4rdt in mom_calc_visc.F
244    o eesupp:
245      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
246      should be called before a "stop" if we know that all process are going
247      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
248    
249    checkpoint61o
250    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
251    o model/src/ini_curvilinear_grid.F:
252       compute angleSin/CosC when they are not read from a file
253    o pkg/seaice:
254       add pseudo time stepping for LSOR
255    o pkg/exch2:
256       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
257    o pkg/seaice:
258       Adding separate sea ice albedo, drag coefficients, and HO in Southern
259       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
260    o SingleCpuIO:
261       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
262    o pkg/seaice:
263       put exchanged variable in (local) common block for MPI+Multi-Threads
264       to work (necessary with exch1, and for now with exch2 too).
265    o verification: to get more experiments tested with mpi, mth and mpi+mth,
266      change tiling of:
267       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
268       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
269      update output of exp:
270       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
271       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
272      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
273                       (note: output.txt generated on faulks using only 1 tile)
274    o eesupp & mdsio (SingleCpuIO):
275     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
276       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
277       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
278     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
279     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
280       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
281    o pkg/exch2:
282     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
283       read parameter file "data.exch2" if it exists; otherwise try default regular
284       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
285     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
286       with new code (not to be used, just as a backup solution).
287     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
288       in utils/exch2/input.
289    
290    checkpoint61n
291    o eesupp & mdsio (SingleCpuIO):
292      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
293        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
294        receive real*4 array (instead of real*8) to read/write 32.bit files.
295        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
296         and remove new mapping S/R)
297    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
298      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
299        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
300        when using exch2. Add S/R to map global io-buffer to global model array.
301      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
302    
303    checkpoint61m
304    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
305      and add 3 other S/R for other types (R4,R8,RS).
306      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
307    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
308     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
309     - reduce number of macro definitions (keep only those which are used);
310       can always call directly the corrresponding S/R if needed.
311     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
312       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
313     Fixed wrong type of arg in:
314       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
315       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
316     To fix: global_sum of var in common block is wrong (multi-threaded) in:
317       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
318     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
319    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
320      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
321    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
322    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
323      edges are closed (zero depth); might happen with "blank tiles";
324      for now, disabled if using OBCS.
325    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
326      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
327    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
328      to reduce length of 1.D array print in STDOUT.
329    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
330      + use 48 tiles (16x8): this will allow to test "blank tiles".
331    o start to test MPI + multi-threaded (change testreport to skip tests
332      where number of tiles do not match).
333    o genmake2: add option "-omp" to turn on Open-MP ;
334      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
335    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
336      and keep the original tile numbering. Note: compatible with old
337      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
338    
339    checkpoint61l
340    o Overlaps had been forgotten in calculating ijk keys : fixed
341    o fix cyrus makedepend for gcc 4.4
342    o experiment fizhi-cs-aqualev20:
343      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
344      and generate new output. Note: new output is much closer to the old
345      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
346      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
347    o pkg/fizhi:
348     - change to avoid indices going deliberately over array-bounds
349     - remove unnecessary MPI stuff
350     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
351     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
352       does not go over array-bounds and therefore returns reliable output.
353     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
354       this S/R has 4 output arguments, which are used inside "get_alarm";
355       when it is called with the same variable "ndum" in place of several
356       output arguments, this produces weird side effect inside "get_alarm"
357      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
358       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
359       address) and produces error.
360    o tools/gemake2: (March 27-29 2009)
361      with option "-mpi": link *_mpi files from "MODS" dir (this is what
362      testreport does).
363    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
364    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
365       update lab_sea.lsr & lab_sea.salt_plume results
366    o pkg/seaice:
367      Major overhaul of the LSOR solver: change discretization from original
368      finite differences to finite volume. The old routine is still in the
369      file seaice_lsr.F and can be turned on with the CPP-flag
370      SEAICE_OLD_AND_BAD_DISCRETIZATION
371      Along with this change, the discretization of the strain rates is changed.
372      The same flag turns on the old discretization in seaice_calc_strainrates.F
373      All verification experiments with seaice are affected (except for
374      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
375      results by setting the above flag.
376      Further changes involve changes in defaults:
377      - ALLOW_FLOODING is defined and turned on by default
378      - SEAICEadvSnow = .true. is now the default
379      - SEAICEadvSalt = .true. is now the default
380      - SEAICEadvAge  = .true. is now the default
381      - SEAICE_clipVelocities  = .false. is now the default
382                                         (as per J. Zhang's recommendation)
383      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
384        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
385      - seaice_growth: replace computation of UG by a simple copy from wspeed
386    
387    checkpoint61k
388    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
389      seaice_lsr: fixed a few metric terms,
390                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
391                  add more debugging diagnostics
392      seaice_evp: removed superfluous many metric terms of FV discretization
393                  of stress divergence
394                  affects lab_sea, lab_sea.hb87
395      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
396                  of stress divergence for non-evp solver
397                  (this part is not tested anywhere)
398      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
399                  they were effectively only half slip
400                  affects lab_sea.hb87
401      updated all relevant verification experiments (except lab_sea//output_adm.txt
402        which was left over, but fails at level 7 & 6)
403    
404    checkpoint61j
405    o pkg/seaice: turn a few hard wired parameters into run time parameters
406    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
407      time in seconds as promised by the usints in seaice_monitor and exf_monitor
408    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
409      that are not cubed-sphere grids
410    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
411    o pkg/ctrl:
412      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
413    o non-hydrostatic (calc_gw.F):
414      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
415      update output of exp. global_ocean.cs32x15.viscA4
416    o remove backward compatibility for thetaMin,phiMin
417      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
418    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
419      interpolated wind field not only for curvilineargrid=.true., but also
420      for a rotated grid (rotateGrid=.true.)
421    o pkg/exf: add capability to bypass interpolation for runoff
422      by setting yet another CPP-flag
423    o eesupp/src, B-grid exchange:
424      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
425    o autodiff
426      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
427      allows to switch to single-prec common blocks;
428      corresponding switch occurs in tamc.h, integer isbyte
429      TAF store directivs "byte" and "kind" seem equivalent;
430      Most tamc.h have been updated correspondingly.
431    
432    checkpoint61i
433    o autodiff:
434      fix autodiff_sore/_restore indices for obcs
435      (spotted by I. Hoteit, M. Mazloff)
436    o pkg/autodiff, pkg/ctrl:
437      Add flag to reduce all tapelev I/O to single-prec.
438      In data.ctrl set
439        doSinglePrecTapelev = .TRUE.
440    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
441      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
442    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
443      real fresh water flux (not yet)
444    o pkg/mdsio & rw:
445     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
446     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
447    o pkg/flt:
448     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
449       init_fixed & ini_varia.
450     - clean-up & simplify linear interpolation S/R:
451       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
452     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
453     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
454     - add vert. coordinate & horiz. indices to output files.
455     - change vertical position in initial condition, from index to depth [m].
456     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
457       (easier to get to a curvilinear grid) ; delX,delY no longer used.
458    o pkg/ggl90: a few modifications:
459     - fix bottom boundary condition, and interpolation of KappaE
460       near top and bottom
461     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
462     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
463     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
464    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
465      (maintain temporary backward compatibility, until next checkpoint)
466    
467    checkpoint61h
468    o pkg/diagnostics with "periodic averaging diagnostics":
469      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
470    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
471    o pkg/obcs: fix loop ranges for balancing code
472    o pkg/flt:
473     - improve criteria for finding which tile owns a float.
474     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
475    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
476      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
477      with ocean biogeo)
478    o pkg/flt:
479     - do some cleaning and fix the restart ;
480     - add output.txt in flt_example/results to get this pkg tested.
481    o genmake2: add an EXTENDED_SRC option and flag.
482       for now, cannot be turned on on command line (only through genmake_local)
483    o pkg/mdsio: read/write vector:
484     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
485     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
486       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
487     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
488      (drop to 4 digits matching for grad). But this test does not look very
489      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
490    
491    checkpoint61g
492    o pkg/flt:
493      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
494       + make OPTIONS file more standard.
495      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
496      - fix _BYTESWAPIO CPP-Flag
497      - standard reading of file-parameter "data.flt"
498      - fix argument list of S/R FLT_RESTART
499      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
500    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
501    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
502      a still unfixed compiler/optimization bug
503    
504    checkpoint61f
505    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
506      update results of global_ocean.cs32x15.icedyn test.
507    o move getcon.F from model/src to pkg/fizhi.
508    o pkg/exf: add parameter for extrapolation of temp up to the surface
509       and option to prevent negative evap (in bulk_largeyeager04 only).
510    o Prather Advection scheme: fix tracer conservation for divergent flow
511      (e.g., when using NonLin Free-Surface).
512    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
513    o gmredi (Visbeck-variable-K):
514     - add more parameters to Visbeck-variable-K.
515     - use a 5 points average for dSigmaR in Visbeck-K calculation
516       (more "homogenous": same stencil and same weights as in dSigmaH)
517     - update output of ideal_2D_oce experiment.
518    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
519      (#undef REAL4_IS_SLOW)
520     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
521       coordinate variable
522     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
523       (surface forcing fields), removes some of the functionality
524     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
525     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
526       probably not all: copy _RS surface flux fields to RL field before
527       calling DIAGNOSTICS_FILL
528     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
529       real*4 (CALL EXCH_*_RS) versions.
530     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
531       (generate new output).
532    
533    checkpoint61e
534    o gmredi (Visbeck-variable-K):
535      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
536      - change computation of Visbeck-K where Slope > Smax :        
537        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
538        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
539    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
540      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
541    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
542    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
543      does not become too large (to avoid precision problems in implicit-diffusion
544      solver); update ideal_2D_oce output.
545    o pkg ggl90:
546      - in ggl90_cal.F: compute only one set of visc/diff, used to
547        step forward TKE/T/S/momentum
548      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
549        have Prandlt =1)
550    o gmredi (fm07):
551      - add lower limit on Transition layer thickness + lower limit on 1/lambda
552      - allow to set few more params from data.gmredi
553    o pkg ggl90:
554          - add missing sqrt(2) factor in computation of mixing length
555            scale in ggl90_calc.F
556            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
557    
558    checkpoint61d
559    o adjoint modifs
560      - adapt to new field rhoInSitu
561      - allow to revert from StoreDynVars2D, StoreDynVars3D
562        to individual fields
563        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
564    o store 3-D (in-situ) density in commom block (DYNVARS.h)
565     - save 1 rho computation.
566     - no longer modify T & S inland when using down_slope pkg.
567    o gad_som : allow to switch to SOM advection for T & S without corresponding
568      pickup files (using new S/R: MDS_CHECK4FILE).
569    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
570      (for useSingleCpuIO to work in multi-threaded)
571    o pkg/shelfice:
572     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
573       with SHELFICEtopoFile in data.shelfice
574     - move code for reading ice shelf topography and modifying hFacC into separate
575       subroutines of the shelfice package
576     - separate initialisation of "fixed" and "variable" variables
577     - kTopC is not (yet) replaced by kSurfC, although this is possible
578    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
579    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
580      and rename:
581      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
582      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
583    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
584    
585    checkpoint61c
586    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
587      to add mass source/sink of fluid in the interior (3-D generalisation
588      of oceanic real-fresh water flux).
589    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
590    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
591    o new pkg: down_slope
592      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
593      - presently, modify T & S inland (dwnslp_calc_rho.F).
594        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
595      - implementation for ocean in P-coords not tested.
596      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
597    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
598      (to facilitate conversion of oceanic pkg to p-coordinate).
599    o change FIND_RHO to FIND_RHO_2D :
600      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
601    o new pkg: cheapaml
602    
603    checkpoint61b
604    o exch2:
605      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
606      - no longer depend on the order sequence (N,S,E,W).
607      - 3rd exchange no longer needed (tested with 24 tiles).
608      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
609      - exch_UV_A-grid readily available (but not yet tested).
610      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
611      (both are no longer needed) in exch_uv: no effect in forward run; but
612       get truncation error differences with adjoint exch.
613    o exch2:
614     - change index-bounds storage (moved from target to local tile,
615       more intuitive this way) ; rename/remove some variables.
616     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
617    
618    checkpoint61a
619    o exch2/matlab-topology-generator:
620      fix bug in index bounds for N-S internal exchange (hard to tell if this
621      had any effect on the solution).
622    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
623      is exceeded
624    o testreport: modify syntax of awk, so that it works also with
625      awk, and not only with nawk and gawk
626    
627    checkpoint61
628    o autodiff
629      Change default for TAF usage by removing argument '-nonew_arg'
630      This changes TAF subroutine argument list (ordering of active var.)
631      Omission of this flag leads to incompatibility w.r.t. TAMC
632      To restore TAMC-compatibility, need following modifs:
633      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
634      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
635      Tested TAF version is 1.9.22
636      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
637    
638    checkpoint60
639    --->>> This is the last checkpoint for which generating the adjoint
640    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
641    --->>> by default.
642    --->>> Future checkpoints will ommit this flag by default.
643    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
644    o pkg/grdchk: Add gradient check to etan0 perturbations.
645    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
646    o pkg/autodiff: more flexibility in zeroadj.
647      model/src: modifying do_oceanic_phys.F accordingly.
648    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
649    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
650      special setup of gmredi for which the adjoint is stable
651      enough for parameter optimization.
652    o bridging the gap between eddy stress and GM.
653      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
654          along with a change in CPP option (now ALLOW_EDDYPSI).
655      -> when using GM w/ GM_AdvForm:
656          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
657          is applied either in the tracer Eq. or in momentum Eq.
658          depending on data.gmredi (intro. GM_InMomAsStress).
659      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
660      The key modifications are in model/src/taueddy_external_forcing.F
661      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
662    
663    checkpoint59r
664    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
665      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
666      fix option to read coriolis(@ cell-corner) from files with CS-grid.
667    o pkg/mnc: add some attributes to standard 1D-coordinate variables
668    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
669      mass points, when using mnc for output
670      - add runtime parameter (missing_value, missing_value_int) to override
671        default (which is the value of getcon('UNDEF'))
672    o pkg/mnc: prepare mnc for the actual use of missing values with the
673      diagnostics package: small fix in mnc_cw_readwrite.template and more
674      initialisation of never used fields
675      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
676      versions
677    o pkg/thsice/thsice_ini_vars.F added default initial values so that
678      thermodynamics sea ice solver does not blow up when some initial fields
679      are missing.
680    o move from external_forcing_surf.F to ini_forcing.F
681      the p-coord. hack consisting in using pLoad to set phi0surf ;
682      update output of tutorial_global_oce_in_p (affected @ truncation level).
683    o Freshen up a bit hs94.1x64x5, notably:
684      remove rotationPeriod and tRef=5*0. (adjoint only), and add
685      exactConserv=.TRUE.
686    o pkg/generic_advdiff:
687      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
688      applies to files where Temperature & Salinity 2nd Order moments are used.
689    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
690      this uses a dynamically allocated internal state data structure
691      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
692      and requires a fortran 90 compiler
693    
694    checkpoint59q
695    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
696       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
697    o Refresh tutorial_global_oce_biogeo, notably:
698      - change bathymetry (put back seamounts in ACC, use hFacs)
699      - change EOS (POLY3 --> JMD95Z)
700      - use Bryan-Lewis vertical diffusivity
701      - use multidimensional advection
702      - remove old virtual virtual in dic pkg, now done through ptracer pkg
703      - change a couple of parameters in dic pkg
704    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
705    o pkg/obcs: change default to OBCSfixTopo = .true.,
706      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
707      - replace "debugMode" with "debugLevel .GE. debLevB"
708    o implementation of TAF directives for gchem,cfc,dic
709    o remove "exp5" (replaced by tutorial_deep_convection).
710    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
711      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
712      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
713      --> changes results in exp4, seaice_obcs
714    o tutorial_deep_convection :
715      update the set-up and increase resolution and domain size ; start
716      from pseudo initial conditions = output at t=120mn in order to see
717      something happening when running testreport.
718    o pkg/seaice: add os7mp as an advection scheme
719                  add check for advection schemes
720                  add a flag for restoring T and S underneath sea ice
721    o pkg/my82: add netcdf-support and diagnostics
722    o thsice pkg:
723      - Now hsMax limits snow height by turning it into ice following
724        flooding scheme (and now conserving energy)
725      - Slight rewriting of the formula in thsice_calc_thick.F
726      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
727      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
728    
729    checkpoint59p
730    o gchem / dic / cfc :
731      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
732      - add new parameter files: "data.dic" & "data.cfc" ;
733      - various re-arrangement in initialisation & header file ;
734      - fix tutorial_global_oce_biogeo for multi-threaded test.
735    o pkg/dic: test for "pickup_dic" file when restarting ;
736      if no pickup-file, can restart with a re-initialised pH (same as it did
737      before) providing pickupStrictlyMatch is set to False.
738    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
739      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
740    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
741      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
742    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
743     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
744       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
745    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
746       scheme to use for vorticty-term ;
747     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
748       (with default selectVortScheme, return to original discretisation)
749     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
750    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
751    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
752      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
753      also fix diagnostics VISCAHW & VISCA4W.
754    
755    checkpoint59o
756    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
757    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
758      move a few statemens out the main loop into separate loops
759    o pkg/shelfice:
760      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
761        (kg/m^2/s), does not break tests, because in verification/isomip,
762        rhoConstFresh=rhoConst (by accident)
763      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
764      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
765        new file model/src/seawater.F, so that they are available for all pkgs.
766      - convert potential temperature into in-situ temperature. This changes the
767        isomip tests => update tests
768    o add a flag writePickupAtEnd (default=true) to be able to suppress
769      writing a pickup at the last timestep
770    o tools/mpack-1.6 :
771      - disable automake (not working) and autoconf (not needed).
772      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
773        also cleaner with much less compilation warnings.
774    o pkg/profiles:
775      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
776      (for "less than 32 characters name" compiler requirement)
777    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
778      conditions that have a different sampling frequency than S/T/U/V obcs
779    o pkg/diagnostics (stats-diags):
780      - fix global Min/Max in case 1 processor get only empty tiles
781    o genmake2: replace (4 times)
782         make genmake_tc_1.o >> genmake_warnings 2>&1
783      with
784         COMM="$CC $CFLAGS -c genmake_tc_1.c"
785         echo $COMM >> genmake_warnings
786         $COMM >> genmake_warnings 2>&1
787      to make genmake2 always see the value of CC as specified in the optfile.
788    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
789      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
790      - modify verification advect_cs test to test SOM-advection on CS-grid.
791    o pkg/ctrl:
792      - Rewrite of ctrl_map_ini_ecco.F,
793        introducing a generic routine (ctrl_map_ini_gen.F).
794      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
795    
796    checkpoint59n
797    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
798      number in dedicate array "hdiag":
799      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
800        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
801      - many small changes (integer format) for large number of diagnostics
802      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
803        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
804    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
805      usingSphericalGrid, this allows to define the rotated grid coordinates
806      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
807      geographical coordinates according to the inverse of the rotation defined
808      by the Euler angles, so that Coriolis parameter and online-interpolation by
809      exf works with the geographical coordinates on XC/YC/XG/YG.
810      Naturally, this feature does not work with all packages, so some
811      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
812      profiles), because there the coordinates are assumed to be regular
813      spherical grid coordinates.
814    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
815      - introduce isopycnal diffusion coefficient control.
816    o tools/adjoint_options:
817      - additional control vector components.
818    o pkg/mnc: have mnc create marginally meaning full coordinate variables
819      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
820    o pkg/mypackage:
821      - add example of read/write pickup for state-var ;
822      - add entry points to the main code for state-vars diags & write-pickup.
823    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
824      transitions for useExfYearlyFields
825      - add new subroutine that determines the file to read from for
826        use*YearlyFields = .TRUE. and .FALSE.
827      - add a verification experiment to global_with_exf that tests
828        useExfYearlyFields with USE_EXF_INTERPOLATION defined
829    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
830      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
831      subroutines (which could be generated from a template, because they are
832      almost identical), for now they are included in obcs_prescribe_read.F for
833      simplicity
834    o pkg/exf:
835      - add a little more diagnostic to exf_interp_read (in analogy to
836        mds_read_field, can be turned off with debugLevel < debugLevA=1)
837      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
838        ugly but fast by unrolling short inner loops, inserting a unroll=8
839        directive in routine lagran, and splitting a loop and making do while the
840        outermost loop (the latter requires the intoduction of index arrays)
841    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
842    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
843      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
844    o verification/seaice_obcs: updated for restart test and latest options
845    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
846      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
847      for now this is only available for the C-grid code and also within
848      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
849    
850    checkpoint59m
851    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
852      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
853    o gad_som : fix flux output (& diagnostics) to have same units as other  
854      advection scheme fluxes (was previously multiplied by deltaT).  
855    o added verification/seaice_obcs both to test seaice open boundaries
856      and to provide an example matlab scrpt for generating them
857    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
858    o pkg/salt_plume: clean up salt_plume_frac.F to
859      remove redundancy in PlumeMethod 1 and 4
860    o pkg/kpp: added saltplume diagnostics
861    o pkg/obcs and pkg/seaice:
862      - do not set uice and vice to zero when OB*icefile are unspecified
863      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
864      - moved seaice tracer obcs after call to seaice_growth
865    o pkg/salt_plume: added various options for salt plume depth
866      criterion and for vertical distribution of the salt
867    
868    checkpoint59l
869    o pkg/ptracers: new version of ptracers pickup:
870      read meta file and write only fields which are needed to restart.
871      ( same logic as main pickup file ; also using pickupStrictlyMatch )
872    o pkg/seaice:
873      - add timescale for melting due to warm mixed layer as a means of
874        setting SEAICE_availHeatFrac more conveniently
875      - add a CPP-flag/runtime parameter check for flooding algorithm
876      - reformulated availHeat in seaice_growth.F to be independent of AREA
877    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
878      unit changes
879    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
880    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
881      SX vector computer.
882    o pkg/seaice:
883      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
884        seaice forcing fields can now be read only through pkg/exf
885      - removed some unused halos
886    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
887    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
888      or U/VICE from U/VWIND before computing U/VSTRESS
889    
890    checkpoint59k
891    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
892      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
893    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
894      all experiments pass when compile with un-initialised var. checking option.
895    o added pkg/salt_plume
896    o script to test restart (for now, in MITgcm_contrib/jmc_script)
897    o pkg/seaice: new read/write pickup version.
898      read meta file and write only fields which are needed to restart.
899      ( same logic as main pickup file ; also using pickupStrictlyMatch )
900    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
901    o lab_sea.hb87: modify the domain & update output.hb87.txt :
902      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
903      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
904      process. Fixed here by closing the domain at the Northern boundary.
905    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
906    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
907      a set of consecutive levels in/from a 3-D array.
908    o pkg/ptracers:
909      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
910      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
911    
912    checkpoint59j
913    o in pkgs: dic, obcs, offline, rbcs:
914      standard way to compute coeff. for time interpolation between 2 time reccords
915      which retains full precision (& make results less dependent on compiler).
916      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
917    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
918      packages instead of reading ice cover and wind speed separately
919    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
920     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
921      to allow to compile customized code before the update)
922    o cleaning-up:
923      - fix CPP instruction syntax in pkg/obcs
924      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
925        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
926      - fix some threads issue in IO parts.
927    o pkg/dic:
928      - add tons of "_d 0" (--> much better testreports !)
929       and then update outputs of tutorial_global_oce_biogeo
930    o pkg/mom_fluxform:
931      add a special version of momentum advection intended to conserve momentum
932      next to a bathymetry step or a coastline edge. (default = off = #undef)
933    o new read/write pickup version:
934      - for now, only implemented for main (mdsio) pickup file.
935      - write out only what is needed to restart; merge pickup_nh , pickup_ph
936        and main pickup together.
937      - read meta file; read only what is needed to restart; stop if a field
938        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
939        if it make sense (even if the restart is not perfect).
940      - if no meta file, assume that pickup to read corresponds exactly to
941        a pickup that would currently be written.
942      - read pickup written in the old format (until checkpoint59i) if it
943        recognizes an old meta file (no field-list).
944      - add a meta file in exp. which starts from a pickup: 2 cases:
945        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
946         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
947        b) a meta file describing the content of the associated pickup file
948         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
949    o pkg/mdsio & pkg/rw:
950      - new routine to read a meta file ; new set of routine to read
951        Multiple-fields file (with meta file).
952    o added open boundary conditions capability for seaice
953        HSNOW, HSALT, UICE, and VICE
954    
955    checkpoint59i
956    o adjoint:
957      * fix multiDimAdvection adjoint
958        (partial recomputation problem by TAF for fVerT(:,:,kDown)
959        and comlev1 size definition (maxpass vs. max. number of tracers)
960      * verification/global_ocean.90x45x15 adjoint now tests
961        NLFS and multiDimAdvection using DST3 (=30)
962      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
963    o pkg/kpp: add "_d 0" to real constant (if missing);
964      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
965      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
966    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
967      for internal parameters related to restart process (formerly from PARAMS.h)
968      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
969    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
970      as argument. (only atm2d & obcs write_pickup have not yet been updated)
971    o pkg/monitor:
972      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
973      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
974      - account for deep Atmosphere factor and density factor (anelastic)
975    o added open boundary conditions capability for seaice HEFF and AREA
976    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
977      thermodynamics
978      - requires a little reorganization, which affects the testreport results
979        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
980        so that now the conservative form is tested
981      - add a few comments
982    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
983    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
984    o add new diagnostics to seaice: advective, diffusive fluxes (only for
985      multidim-advection, for scheme 2 they are not filled) and transports,
986      thermodynamic growth rates
987    o change units of EmPmR (inside the code, + within coupling interface)
988      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
989      Affects results @ truncation level (cg2d match) and update output of
990       experiments: lab_sea(6), global_ocean.90x40x15(10),
991      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
992      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
993      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
994      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
995    
996    checkpoint59h
997    o pkg/exf:
998      - improve vectorization by moving if-statement out of loops in
999        exf_mapfields, exf_radiation
1000      - exf_bulkformulae.F: introduce 2D fields and vectorize code
1001    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
1002    o testreport:
1003      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
1004        monitor & update offline_exf_seaice exp. output.
1005      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
1006    o pkg/seaice:
1007      - bug fix in the evp solver: boundary conditions were affected be
1008        masking of zMax/zMin (changes results)
1009      - minor bug fix in boundary conditions in seaice_calc_strainrates
1010        (changes results for no_slip)
1011      - seaice_lsr.F: make interpolation of eta dependent on boundaries
1012      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
1013      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
1014        stress formulation and no-slip boundary conditions
1015    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
1016      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
1017    o pkg/seaice: a first HSALT time stepping equation has been checked in
1018    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
1019      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
1020      without requiring DO-IF statements
1021    o pkg/thsice:
1022      use continuous power-law function for partition of energy between lateral
1023      melting/freezing and thinning/thickening ; old code using step function
1024      still available with #undef THSICE_FRACEN_POWERLAW
1025      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
1026    o testreport: change AD testing : check against results/output_adm.txt
1027      using same scripts as for forward test.
1028    
1029    checkpoint59g
1030    o adjoint testing: in preparation for changing testreport:
1031      - output format: cost and grad written on separated lines
1032      - ad output results in directory "results" (instead of "results_ad")
1033    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
1034    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
1035    o pkg/ecco: allow user defined cost function contributions
1036    o testreport:
1037      Allow to choose (per experiment) the list of tested output variables
1038       and the main variable (used to issue a pass/FAIL ) ;
1039      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
1040      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
1041      Also modify printing of summary:
1042       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
1043       b) echo the list of tested variables in the individual summary.txt of
1044          each experiment.
1045    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
1046      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
1047      (but still depend on the tile decompostion of the domain).
1048    o pkg/seaice: change a discretization detail to make the B-grid code
1049      "more symmetric". This change is likely to remove all "ridges/leads" that
1050      where quasi-aligned with the grid in B-grid solutions. It may also be
1051      the solution to the stress coupling issues with the B-grid.
1052    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
1053      remove .cvsignore from input dir. (since testreport no longer run here).
1054    o pkg/thsice:
1055     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
1056     - fix reshaping of sea-ice just after advection:
1057       melt all the ice only if ice-volume is too small.
1058     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
1059       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
1060     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
1061    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
1062      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
1063    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
1064      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
1065      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
1066      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
1067      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
1068      -> update output.txt
1069    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
1070     this affects truncation error: -> update output.txt of exp:
1071      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
1072      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
1073    
1074    checkpoint59f
1075    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
1076    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
1077      a bounded range (in forward mode)
1078    o pkg/ecco, ctrl, autodiff and mom_common:
1079     internal parameter controls, completements of implementations
1080    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
1081    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
1082      (not seem any difference in testing results).
1083    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
1084       at face corners.
1085    o pkg/generic_advdiff:
1086     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
1087      loop range indices for computing vertical advection tendency
1088      and do the calculation in the interior only (no overlap) ;
1089      for now, only implemented for SOM advection (to save CPU time).
1090     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
1091    o exch2 adjoint
1092      First set of changes:
1093      - add exch2 hand-written adjoint templates
1094      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
1095        This will require cleanup in pkg/autodiff/*.F
1096        (changed routines currently kept separate in verif. code/)
1097      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
1098        that used to hide exch2 or cubed-sphere specific code
1099        (commented via 'cph-exch2')
1100    o pkg/seaice
1101      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
1102    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
1103       output of global_ocean.cs32x15.thsice .
1104    
1105    checkpoint59e
1106    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
1107      for B-grid vector (not yet tested) and C-grid vector (<- only used
1108      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
1109    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
1110      (#ifdef ALLOW_SALT_PLUME)
1111    o gather_2d/scatter_2d: removed halo regions
1112    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
1113      scheme and the corresponding test case (under front_relax dir). For now,
1114      only available with Skew-flux form and not yet tested in realistic set-up.
1115      adjoint: store directives updated, but gradient checks deteriorated,
1116      so maybe GM/Redi adjoint is now broken.
1117    o seaice adjoint
1118      * add AREA, HEFF, HSNOW as control variable
1119        (should not change lab_sea results)
1120      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
1121    o pkg/seaice:
1122      * added computation of saltFlux in seaice_growth;
1123        For time being, sea ice salinity is assumed constant
1124        contribution of snow flooding to freshening of sea ice is neglected.
1125        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
1126        defaults to 0.0 in order to maintain backward compatibility.
1127        Typical values for SEAICE_salinity are 4 to 10 g/kg.
1128      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
1129      * added SEAICE_availHeatFrac, which specifies fraction of surface level
1130        heat content used to melt or grow ice
1131      * commented out cap of HICE: it helps keep ice thinner
1132      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
1133      * applied OBCS T/S mask to HEFFM sea ice mask
1134    
1135    checkpoint59d
1136    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1137     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1138     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1139    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1140     and change default value of parameter "GM_Small_Number";
1141     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1142       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1143       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1144    o pkg/ecco: cost function when applying pkg/smooth to controls
1145    o pkg/ctrl: add forcingPrecond run time parameter
1146    o pkg/seaice:
1147     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1148     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1149       changes verification/lab_sea
1150     - rearrange implicit part of u-equation in LSR solver to make it easier to
1151       read, understand, and debug. This causes changes at the truncation level.
1152     - fix (serious) bug in the boundary conditions (sign error in the implicit
1153       part) of the LSR solver. Changes all LSR results.
1154     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1155       is initilized with small values - does not change lab_sea results.
1156     - added HsnowFile initialization capability
1157    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1158     initialization of pkg/smooth and application to control vector
1159    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1160    o dependencies: pkg/profiles requires pkg/cal
1161    o pkg/profiles:
1162     - added option ALLOW_PROFILES_GENERICGRID
1163         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1164         that interpolation information (grid points and coefficients) is provided
1165         within the netcdf input files.
1166         -> sample matlab scripts can be found in MITgcm_contrib/gael
1167         that allow you to prepare netcdf input files.
1168     - also modified: cleaner include statements, cleaner error print statements,
1169       cleaner stops when error, and more tests of the netcdf input files consistency.
1170    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1171    o pkg/seaice:
1172     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1173       requires a new routine: seaice_diagnostics_fill.F
1174     - make sure that seaice does not move if not forced (pressure replacement
1175       method, Hibler and Ip, 1995), changes results
1176     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1177     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1178       It is turned off by default (=-1.), because it changes the results.
1179     - make it possible to read AREA from a file, too.
1180    
1181    checkpoint59c
1182    o add S/R and diagnostics for oceanic mixed-layer depth
1183    o move GMRedi call after all vertical mixing schemes (including KPP)
1184    o pkg/thsice:
1185     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1186      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1187    o pkg/obcs:
1188     - bug fix for balance code
1189    o pkg/seaice:
1190      - allow values of SEAICE_elasticParm > 1
1191      - add new parameter SEAICE_evpTauRelax as an alternative
1192        to SEAICE_elasticParm
1193      - make lsr boundary conditions free slip (by default), changes result
1194      - add code for no slip boundary conditions for lsr
1195      - set minimum of zeta to zero (and not 4e8) (changes results)
1196      - add a cap on AREA after advecting AREA if seaice_growth is not called
1197    o change calculation of Visbeck K:
1198      - no longer depend on tapering scheme; instead, compute slope (limited
1199        by GM_maxSlope). this is equivalent to what was comuted before with
1200        clipping or linear tappering.
1201      - fix vertical averaging (wrong by 1/2 level)
1202      - leave the old version (but will not be maintained) within
1203        #ifdef OLD_VISBECK_CALC / #endif
1204      - update output of exp. ideal_2D_oce
1205    o change error catch in calc_r_star to improve vectorization
1206    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1207      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1208    o adjoint:
1209      Re-organized adjoint checkpointing according to Matt Mazloff
1210      (but with modifs/completions/cleanups)
1211      Storing is now bundled into large arrays to optimized I/O
1212      (and second step in cleanup of the_main_loop)
1213    
1214    checkpoint59b
1215    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1216      - export/import (between ocean & coupler) fields needed for ocean DIC.
1217    o pkg/seaice:
1218      - get rid of three more exchanges seaice_calc_viscosities (required
1219        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1220      - bug fix in seaice_ocean_stress (update of lab_sea required)
1221      - reduce loop boundaries to necessary minimum also in seaice_evp
1222      - go back to the old way of computing deltaC/Z as the adjoint likes that
1223        better
1224    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1225      passive tracer to an Age Tracer) + update output.txt
1226    o pkg/exf:
1227      - implement A-grid / C-grid selection for wind-stress input files.
1228      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1229      for now, in exf_bulk_largeyeager04.F only :
1230      - change implementation for case where windspeed + 2. components wind-stress
1231        are read-in. AND use rhoConstFresh to convert evap.
1232    o pkg/seaice:
1233      - use correct EXCH_UV for wind-forcing (on A-grid).
1234      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1235        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1236    o pkg/exf:
1237      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1238      EXF_INTERPOLATION:
1239      - merge global_with_exf/code version of exf_interp_read.F
1240        to the main code ;
1241      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1242        reading the file ; Important: This options needs to be defined to recover
1243        previous code.
1244        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1245      - no longer loose real*8 precision along the way when using exf_iprec=64.
1246    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1247      - change discretisation of evp-solver in order to avoid another exchange
1248        (changes lab_sea) and clean up a little
1249      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1250        help the adjoint (this also changes the results slightly)
1251      - add a few "_d 0" where they had been missing in seaice_evp.F
1252      - cleaning up: remove unused seaice_calc_rhs.F
1253    o pkg/exf: some cleaning-up:
1254      - change various "constants" into runtime parameters
1255      - cleaned-up Large&Yeager04 routine which should eventually
1256        replace exf_bulkformulae.F (changed names of S/R and CPP)
1257        and merged various ALLOW_ATM_WIND options
1258     only used with thsice pkg (in thsice_get_exf.F):
1259      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1260        which are used when useStabilityFct_overIce=TRUE (= the default)
1261      - change default values of ice & snow emissivity and scale downward LW
1262        by ice & snow emissivity.
1263    o pkg/thsice:
1264     fix few little problems, in thsice_calc_thickn.F:
1265      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1266      - melt only laterally if hIce < hThinIce (as the comments say)
1267      and in thsice_extend.F:
1268      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1269      - start to form ice as soon as the minimum ice-volume is reachable.
1270     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1271      and cpl_aim+ocn
1272    o pkg/kpp
1273     - move computation of surface related input fields to KPP into a new
1274       subroutine kpp_forcing_surf.F
1275     - remove wrong (within bi,bj loops) EXCH calls.
1276     - little cleaning (add argument myThid in last position, cvs header ...)
1277     - for now, fix conservation problem by exchanging KPPviscAz (may not
1278       be the best fix)
1279    o pkg/seaice
1280     - check for inconsistent evp parameter/cpp-flag combination
1281     - remove leftover errIO flat for obsolete name list error handling
1282    o OpenAD
1283     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1284    
1285    checkpoint59a
1286    o pkg/seaice: some parameter clarifications and a little bit of clean up
1287    o pkg/thsice: rename run-time parameters:
1288       himin       -> hIceMin
1289       himin0      -> hThinIce
1290       hihig       -> hThickIce
1291       i0          -> i0swFrac
1292       transCoef   -> bMeltCoef
1293       frac_energy -> fracMelting
1294      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1295       with default values (for now) that do not change the results.
1296      remove old version of thsice vars advection in pkg/seaice.
1297    o in FFIELDS.h:
1298      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1299      - make pLoad & sIceLoad always available (but still only used if
1300         ATMOSPHERIC_LOADING is #define).
1301    o pkg/kpp: replaced _KPP_RL with _RL
1302    o bug fixes for vertical diffusivity computations when both KPP and
1303        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1304        are no longer updating the vertical diffusivity array
1305        (passed as argument) but are (re-) setting those arrays.
1306    o pkg/seaice: fix bug in evp solver, while doing that
1307      - change (improve?) discretization of stress computations for both
1308        cgrid-lsr and evp solver
1309      - add a new routine to compute strain rates
1310      - the above changes lab_sea results
1311      - add no slip conditions for evp solver (off by default), lsr-version
1312        may follow
1313      - fix exchange for shear at Z-points (does not change lab_sea)
1314      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1315        (to force the user to pick a time step since there is not "safe" way
1316        of choosing it)
1317      - add principal stress diagnostics
1318      - rearrange fields for evp a little to avoid having to call a: too many
1319        exchanges and b: exchanges for stress trensor components which we do
1320        not have.
1321      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1322        of evp, complete rewrite for lsr case (latter is does not yet work
1323        in all cases)
1324    o pkg/kpp: add code to have mixing in shelf ice caverns
1325      - add myThid to all kpp routines (long overdue)
1326    
1327    checkpoint59
1328    o pkg/exf:
1329      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1330        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1331      - move exf header files from lower_case.h to UPPER_CASE.h ;
1332        add missing cvs Header & Name
1333      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1334      - add namelist param. selectStressGridPosition, exf_monFreq
1335      - retire many _CLIM routines, and remove data.exf_clim
1336        + params moved to data.exf
1337        + climsst, climsss now handled by exf_set_gen, i.e.
1338          climss?period=0 refers to constant field,
1339          climss?period=-12 to monthly forcing
1340      - split up namelists in data.exf
1341    o pkg/seaice:
1342      - remove seaice_exch and seaice_exch_uv
1343      - remove superfluous exchange of theta
1344      - add myThid to seaice_budget_ocean/ice
1345      - add new interface for atmospheric wind forcing (C-grid only)
1346        + new routine
1347        + two new field (taux, tauy for stress over ice)
1348        + removed one global field (DAIRN) for C-grid case only
1349    o pkg/thsise
1350      - 2nd set of modifs for thsice adjoint in conjunction with exf
1351    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1352    
1353    checkpoint58y_post
1354    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1355      vertical diffusivity, similar to that in MOM4; turned on using
1356      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1357      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1358    o Added capability for 3D specification of background vertical diffusion
1359      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1360      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1361      "data" file that contains the 3D vertical diffusivity coefficients.
1362    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1363      - add code within pkg thsice to advect & diffuse sea-ice fields
1364      similar to (and will replace) what has been added in  seaice_advdiff.F,
1365      but: - conserving Mass, Heat & Salt.
1366           - better when using non-linear advection scheme (not yet fully tested)
1367           - can also be used in atmospheric set-up (for now, only the diffusion).
1368    
1369    checkpoint58x_post
1370    o IO option for global-file compact format:
1371      - add options when generating topology (utils/exch2/matlab-topology-generator)
1372      - add I/O capability (pkg/mdsio).
1373      - adapt utils/matlab/rdmds.m to read this format.
1374      for now long-line format not yet supported by pkg/mdsio (& exch2).
1375    o shelfice: add a few diagnostics
1376    
1377    checkpoint58w_post
1378    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1379      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1380      (and replace horiVertRatio in NH code).
1381      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1382                         and tutorial_plume_on_slope (sensitive to truncation)
1383    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1384      directly to drive seaice model (C-grid only)
1385    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1386     - reintroduce computation of wind from stress,
1387     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1388       mass points to avoid tau = 0
1389     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1390    o rdmnc.m: make it work with "global" files created with gluemnc
1391    o rdmnc.m : some improvements in dealing with singleton dimension
1392      (tested on all testreport mnc output files).
1393    o genmake2: disable pkg/profiles if netcdf test fails.
1394    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1395    o move call to cal_readparms up to make calendar parameters/variable available
1396      to all packages
1397    
1398    checkpoint58v_post
1399    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1400      useDynP_inEos_Zc tested.
1401    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1402    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1403      and portions thereof.  See read_cs.txt for description and examples.
1404    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1405      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1406      following the great-circle arc between those 2 points.
1407    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1408      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1409    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1410     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1411     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1412     - still needs work (not working with some options ; efficiency to improve)
1413       and serious testing.
1414     - use this scheme for temperature & salinity in 2 advection test exp.:
1415       advect_xy & advect_xz, respectively.
1416    
1417    checkpoint58u_post
1418    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1419    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1420    o testreport: add option "-skipdir" to skip some test.
1421    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1422      momentum calculation.
1423    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1424    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1425      remove checkpoint.F and the_correction_step.F (no longer used);
1426      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1427    o add option (linFSConserveTr) to correct for tracer source/sink due to
1428      Linear Free surface
1429    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1430    o pkg/thsice: fix reading mnc-pickups
1431    
1432    checkpoint58t_post
1433    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1434    o pkg/mdsio:
1435     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1436       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1437       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1438     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1439     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1440       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1441     - new S/R (to replace MDSWRITEMETA), which allows to write more
1442       informations (variable names, time ...) to meta files.
1443     - modify rdmds.m to give back the meta file content.
1444    o pkg/diagnostics: change vertical interpolation to be safer, and more
1445       flexible (define p-levels to interpolate to in data.diagnostics);
1446      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1447       diagnostic pointer.
1448    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1449    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1450    o fix multi-category seaice:
1451     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1452       SEAICE_MULTICATEGORY
1453     - fix short wave heat flux
1454    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1455       and allow to use EVP solver. Change forward lab_sea: test both EVP
1456       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1457    o Initial check-in of lab_sea adjoint
1458      (very similar to natl_box_adjoint/code_seaice)
1459      * used C-grid and EVP solver
1460      * used KPP, GM/Redi
1461      * uses inAdExact=.TRUE.
1462      * gradient checks fail for both ADM and TLM
1463        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1464        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1465        issue is related to forward mismatch between g77 an ifort
1466    o pkg/seaice: overhaul of thermodynamics
1467     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1468     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1469     - move a few global fields out of SEAICE.h into seaice_growth.F and
1470       make them 2D (FICE/QNETO/ ...)
1471     - remove FO (it is the same as QNETO)
1472     - introduce a few local fields to avoid modifying external fields such
1473       as atemp, etc.
1474    
1475    checkpoint58s_post
1476    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1477      changed exf_set_gen.F so that
1478        genperiod=0 means input file is one time-constant field and
1479        genperiod=-12 means input file contains 12 monthly means
1480    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1481      this affects truncation error ; generate new output file for exp. which
1482      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1483        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1484        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1485        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1486        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1487        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1488    o start implementation of deep-atmosphere and anelastic formulation
1489    o verification: remove 2nd copy of input files and use script "prepare_run"
1490      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1491    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1492    o profiles: fix for multithreaded case
1493    
1494    o diagnostics: rename few diags:
1495      s/'PRESSURE'/'RCENTER '/g
1496      s/'TICE    '/'oceFreez'/g
1497      s/'TAUX    '/'oceTAUX '/g
1498      s/'TAUY    '/'oceTAUY '/g
1499      s/'SWFLUX  '/'oceQsw  '/g
1500      s/DIFx/DFxE/g
1501      s/DIFy/DFyE/g
1502      and add few ocean-forcing diagnostics:
1503      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1504    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1505      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1506      as actual snow thickness.  It now refers everywhere to effective snow
1507      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1508    
1509    checkpoint58r_post
1510    o modifications to pkg/seaice/growth.F, which change results of
1511      lab_sea experiment: fixes pertain to melting snow over open water, to
1512      masking EVAP under sea ice, and to using the correct AREA variable for
1513      computations of EVAP, PRECIP, HSNOW, and GHEFF
1514    o add ability to read bathy, salt, and theta using MNC (off by def)
1515    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1516      both are turned off by default and do no change any results
1517    o seaice advection with pkg/thsice: a step toward the use of non-linear
1518      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1519    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1520      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1521      in natl_box (affects results @ truncation level: update output.txt)
1522    o multi-threading and IO:
1523      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1524      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1525        (needed to work with SingleCpuIO): tested in all verif. exp.
1526    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1527      affects the results (but none of the verification test uses this scheme).
1528    o Adding some pkg/diagnostics capability to pkg/seaice
1529      (will certainly be subject to changes)
1530    o ctrl: adding new control variables:
1531      lwflux, lwdown, evap, snowprecip, apressure, runoff
1532    
1533    checkpoint58q_post
1534    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1535      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1536      high_res_cube configuration by 4% on Columbia.
1537    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1538      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1539      dynamical allocation (seems to work in multi-threaded).
1540    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1541      single CPU io) so that TAF does not have to see EESUPPORT.h
1542    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1543    
1544    checkpoint58p_post
1545    o obcs: stop if obcs is used with useCDscheme = .true.
1546    o shelfice:
1547     - fix a sign error so that no slip at shelfice interface works
1548     - remove stop for combination non-hydrostatic code and shelfice. That does
1549       not mean, that the results are correct, but at least they are numerically
1550       stable
1551    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1552    o added adjoint exch routined for all exch*3d* routines
1553      and updated flow directives
1554    
1555    checkpoint58o_post
1556    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1557      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1558    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1559      and clean-up reading/writing of pickup files.
1560    o fix local version of read/write pickup (NH part) in rotating_tank/code
1561    o simplify EXCH interface:
1562     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1563     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1564    o added the regrid package
1565    o shelfice:
1566     - add a simple boundary layer scheme to reduce noise
1567     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1568    
1569    checkpoint58n_post
1570    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1571       local variable (not in common block).
1572    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1573      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1574      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1575        to work with SingleCpuIO.
1576    o add "_d 0" to real constant of pkg/cfc subroutines ;
1577       update exp. cfc_exemple & tutorial_cfc_offline output files.
1578    o multi-threading and IO:
1579      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1580        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1581      - barrier before and after reading.
1582      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1583      - avoid using MDS_WRITELOCAL for LAND pkg output.
1584      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1585        common-block variables ; Allows multi-threading with master-thread IO.
1586    o change default MAX_NO_THREADS from 32 to 4 ;
1587      and stop cleanly when MAX_NO_THREADS is too small.
1588    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1589    
1590    checkpoint58m_post
1591    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1592       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1593    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1594       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1595       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1596    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1597        add MITgcm_tutorials (= code + all the tutorials)
1598    o ecco, option to compute cost for total ssh (mean+anom)
1599    o consistent with addition of ptracer and ssh in pkg/profiles
1600    o profiles: adding ptracer and ssh
1601    o testreport: change multi-test output-file name
1602      (from output.txt.{name} to output.{name}.txt)
1603    o profiles: now ok for mutli-tiles case
1604    o seaice: add 4 parameters for different advection schemes for area,
1605      (effective) seaice thickness, enthalphy, and snow height. Their default
1606      is the standard parameter SEAICEadvScheme
1607    o calc_gw:
1608     - add cosFacU in zonal viscous flux (harmonic.visc.).
1609     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1610       of tutorial_plume_on_slope.
1611    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1612    o calc_gw: true flux-form, account for horizontal grid spacing.
1613      update rotating_tank results, but not plume_on_slope (affected at
1614      truncation level, 11 digits).
1615    
1616    checkpoint58l_post
1617    o calc_gw:
1618     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1619     - remove side-drag for now (need to fix it); update plume_on_slope results.
1620     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1621    o commit code to make SST/SSS weights spatially variable
1622      (based on either variable in-situ or variable initial T/S weights)
1623    o pkg/ecco:
1624      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1625        now based on horizontally varying weights wthetaLev, wsaltLev
1626      * cost_averagesflags now returns year indices in addition to day, month
1627      * sflux balance is performed on annual basis
1628        (sflxumm, sfluxmm2, bal_sfluxmm)
1629      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1630        including separate counting and multipliers
1631    o pkg/rbcs
1632      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1633    
1634    checkpoint58k_post
1635    o testreport:
1636     - always build in dir. "build" (if not there, mkdir build instead of building
1637       & running in input)
1638     - run in dir run (if it exists), in build otherwise.
1639     - call prepare_run (if input/prepare_run exists)
1640     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1641    o pkg/exf modifications to interpolation and rotation routines for more
1642       reasonable treatment of North Pole singularity: for tracers North Pole
1643       value is set to northernmost zonal-mean value, for zonal velocity it is
1644       set to zero, and for meridional velocity it is set to northernmost value.
1645    o pkg/exf/exf_check_range.F
1646     - add tile index to diagnostics and move stop statement to the very
1647       end of the routine.
1648    o pkg/diagnostics: (diagnostics_main_init.F)
1649      define title of isomorphic variables according to the current config.
1650    o pkg/thsice with pkg/seaice dynamics:
1651    - fix domain of computation (interior only, required for exf) and do exchanges
1652    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1653    o towards a standard way of dealing with multi-threading in MONITOR
1654      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1655    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1656       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1657    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1658    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1659    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1660       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1661    o tracer advection:
1662     - clean-up and simplify calc_common_factors.F
1663     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1664       advection subroutine (but still not used within DST advection S/R)
1665    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1666    
1667    checkpoint58j_post
1668    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1669      from file (collects calls previously in FORWARD_STEP)
1670    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1671    o adjoint store dir. adjusted accordingly
1672    o genmake2
1673      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1674    
1675    checkpoint58i_post
1676    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1677      on wind stress (SEAICEstressFactor defaults to 1.)
1678    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1679      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1680    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1681      on CS-grid: no longer loosing mass.
1682    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1683    o pkg/ggl90: fix sloppy output and fix a bug
1684    o pkg/seaice: added SEAICEuseEVPpickup parameter
1685      - Set to false in order to start EVP solver with
1686        non-EVP pickup files when using SEAICEuseEVP
1687      - fix sign error in diffusion in seaice_calc_rhs
1688    
1689    checkpoint58h_post
1690    * Modifications for bottom topography control
1691      o replace hFacC by _hFacC at various places
1692      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1693      o add non-self-adjoint cg2d_nsa
1694      o update autodiff support routines
1695      o re-initialise hfac after ctrl_depth_ini
1696      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1697    * Adding verification for 5x5 box (4-layer) bottom topography control
1698    
1699    checkpoint58g_post
1700    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1701       used for mean seasonal cycle, mean diurnal cycle); add an example
1702       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1703    o pkg/ggl90:
1704      - add parameter (minimum surface kinetic energy)
1705      - fix bug (avoiding division by zero)
1706    o couple pkg/thsice to pkg/seaice:
1707      - modify advection in seaice to accomodate new scalar fields to be advected
1708      - only muliDimAdection scheme work with seaice/thsice
1709      - mapping of thsice-variables to seaice-variables, back and forth
1710      - does not break the verification experiments, but does not give the
1711        desired results either
1712    o pkg/seaice
1713      - make (default) second order advection a bit less confusing?
1714    
1715    checkpoint58f_post
1716    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1717      to pkg/seaice):
1718      - new routines thsice_map_exf and thsice_get_exf provide the interface
1719      - add an additional formal parameter to thsice_solve4temp
1720    o pkg/exf:
1721      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1722      - correct Stefan-Boltzmann constant
1723      - new parameter for longwave surface emittance
1724      - separate some stuff from exf_bulkformulae into new routines  
1725        exf_radiation, exf_wind
1726      - add new parameters and constants: longwave emissivity for ocean, ice
1727        and snow, evaporation parameters over ice
1728      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1729        either wind from stress or stress from wind
1730    o pkg/thSIce:
1731    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1732    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1733       and THSICE_CALC_THICKN
1734    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1735    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1736      to make debugging easier.
1737    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1738    o pkg/bulk_force:
1739      - clean-up comments and parameters ;
1740      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1741    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1742      generate new output for test-experiment: aim.5l_cs.thSI
1743    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1744      testreport accordingly
1745    
1746    checkpoint58e_post
1747    o SEAICE_CGRID adjoint done
1748    o R_STAR adjoint implemented.
1749      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1750      * need to sort out init. of h0facc, etc.
1751    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1752      to be able to use it in pure forward.
1753    
1754    checkpoint58d_post
1755    o upgrade simple test-experiment to tutorial example:
1756     step.1: duplicate the experiment and (step.2) will remove the old copy.
1757      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1758      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1759      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1760      tutorial_global_oce_biogeo    <- copy of dic_example
1761      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1762      tutorial_plume_on_slope       <- copy of plume_on_slope
1763      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1764      tutorial_global_oce_optim     <- empty for now (David ?)
1765      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1766     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1767    o correct a sign problem in cost_scat.F
1768    o obcs and ptracers: fix boundary conditions for advections schemes
1769      with larger stencil
1770    o thsice adjoint: start
1771    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1772      completeness
1773    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1774      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1775    o ptracers adjoint:
1776      * avoid extensive recomputatations
1777      * fix missing re-init. of gptr (missed by TAF)
1778    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1779      me to turn off the excessive output to STDOUT that this package produces
1780    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1781      and add those terms in Vector-Invariant formulation.
1782    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1783      if the control period (xx_hfluxperiod etc) is 0
1784    o in profiles pkg, clean routines and fix details
1785    o in ecco pkg, reading ssh data:
1786      fix problem in case the model does not start at iter0=0
1787    o fix mnc-pickup/restart for ptracers
1788    o new package prifiles:
1789      code to compute profile-based cost by Gael Forget
1790      (modifs in ecco, ctrl, autodiff)
1791    o Benign bug fix in initialization (spotted by M. Mazloff) of
1792      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1793    
1794    checkpoint58c_post
1795    o adjoint: finish NLFS adjoint and provide reference output in
1796      verification/global_ocean.90x40x15/results_ad_nlfs
1797    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1798      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1799      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1800      with SEAICE_CGRID defined.
1801    o move calendarDumps from "data" to "data.cal" and clean-up the code
1802      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1803    o add useEXF & useCAL flags (for now, set in hard-coded way)
1804    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1805      (were missing in NH mode, and wrong in quasihydrostatic mode).
1806      waiting for Chris updated version of calc_gw to add those CALLs.
1807    o fix bug in quasihydrostatic S/R ;
1808      add a test for this option: global_ocean.90x40x15.qshyd
1809    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1810      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1811    o add on/off flag useOffLine for package OFFLINE
1812    o seaice:
1813      - modify advection so that it works also on the C-grid
1814      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1815        problem in multi-tile runs with C-grid
1816      - add flags for clipping ice velocities and/or masking solver forcing
1817      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1818        C-grid solver
1819      - added a few comments to seaice_diffusion.F
1820      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1821        are now exclusive)
1822      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1823        required re-ordering the code a little:
1824       + make DAIRN global variable (defined in SEAICE)
1825       + move computation of the viscosities eta and zeta into a new separate
1826         routine (because I need to recompute them in seaice_ocean_stress.F)
1827    
1828    checkpoint58b_post
1829    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1830      update output.txt of exp. aim.5l_cs.thSI
1831    o various mnc cleanups and improvements:
1832      + shrink lookup tables by factor of ~4
1833      + better error reporting when running out of lookup space
1834      + able to handle longer path/file names (up to 500 chars)
1835    o adjoint:
1836      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1837      - TBD: "hidden" mom_vecinv recomp. in dynamics
1838    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1839     (allow to differentiate between forcing components using new integer flags:
1840      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1841     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1842    o ecco
1843      - enable trend removal from SSH anomaly obs.
1844    o adjoint
1845      - a fix for PmEpR when #undef EXACT_CONSERV
1846      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1847      - try to fix "hidden" recomp. in forward_step for NLFS
1848        (NLFS seems broken sometimes after I checked it in)
1849    o seaice:
1850     - add c-grid version of the dynamic solver:
1851       + three new routines that are the c-grid substitute lsr, dynsolver
1852         and ostres
1853       + put a few fields that were local to dynsolver into global common
1854         blocks, so that I can move the computation of stresses etc into
1855         seaice_lsr (saves coding but may break the adjoint).
1856     - replace more hardwired parameters by runtime parameters
1857     - add ice masks that mask the rhs of the implicit solvers where there
1858       is no ice (commented out in seaice_dynsolver, because i am not sure
1859       if this works properly), eventually this should replace the clipping
1860       of ice velocities in seaice_dynsolver to +/-40cm/s.
1861    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1862      include it only where its needed
1863    o move balancing of fluxes before the call of external_forcing_surf
1864    o seaice:
1865      - correct units of turning angles (now they are really in degrees)
1866      - move computation of GWATX/Y out of main routine into dynsolver
1867      - initialize GWATX/Y in seaice_init
1868    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1869      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1870    o seaice: add runtime flags for turning angles (default to zero)
1871    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1872      and trend from exf forcing and ctrl control adjustments
1873    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1874      (since checkpoint57x_post)
1875    o change the default rotation period to 86164.s = the Earth rotation
1876    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1877      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1878    o seaice advection: add code for choosing between the default (2nd order
1879      central differences) and multiDim advection schemes provided by
1880      pkg/generic_advdiff
1881    o seaice:
1882      - removed all references to SEAICE_GRID.h fields from
1883        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1884        (cubed-sphere configuration will change a little)
1885      - grid computations in seaice_init are obsolete now.
1886      - cleaned up code a little so that is easier to read (hopefully).
1887      - added new (better?) discretizations of default advection and diffusion
1888        (turn on with SEAICEuseFluxForm)
1889      - replace 1 in 3d global fields by kSurface in growth.F
1890      
1891    checkpoint58a_post
1892    o seaice:
1893      - bug fix in advect.F
1894    o shelfice:
1895      - separate shelfice load anomaly from pload (breaks with time
1896        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1897        Its default is 0., but it may be computed more cleverly from (unknown)
1898        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1899        done offline. A good approximation of the pressure load anomaly is
1900        necessary to avoid large initial adjustment processes underneath
1901        deep-reaching shelfice.
1902      - small fix in ISOMIP shelfice_thermodynamics
1903      - add more sophisticated thermodynamics of Hellmer (1989), this is
1904        now the default
1905      - give a few constants more intuitive names
1906    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1907      if bulk formulae are used in long integration (especially EmPmR). Turn
1908      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1909      if balancePrintMean, the imbalance that is substracted is printed to
1910      STDOUT.
1911    o fix bug (typo) in obcs_apply_eta.F
1912    o add a new package shelfice which enables us to model the circulation
1913      underneath shelf-ice with draughts of hundreds of meters.
1914     - works
1915     - to do: + include improved thermodynamics
1916              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1917                instead of new field kTopC
1918              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1919                instead of new field R_shelfIce and new code in ini_depth.F
1920                and ini_mask_etc.F?
1921              + adjust vertical mixing schemes?
1922    o seaice pkg:
1923     - add a cpp-flag to include a simple formula for a salinity dependent
1924       freezing point of sea water at the surface
1925     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1926       meridional stresses are now different (and hopefully correct)
1927    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1928       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1929       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1930    o pkg/diagnostics: add options and parameters for regional-statistics
1931       diagnostics ; define regions by reading a region-mask from a file
1932       (might add other options later)
1933    o pkg/bulk_force:
1934     - add option and parameters to use AIM surface-flux formulae.
1935     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1936       others forcing fields (defined in PARM05, parameter file "data") are loaded
1937       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1938     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1939     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1940     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1941       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1942     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1943    
1944    checkpoint58
1945    o add "--embed-source" option to genmake2 which, when the supporting
1946      tools can be compiled (as determined by genmake2) will turn on the
1947      embed_files package which then embeds the entire MITgcm source code
1948      (*.[fFhc] + Makefile) used for the build within the executable
1949      - requested by CNH but off by default
1950      - adds a paltry <9MB to the mitgcmuv executable in most cases
1951      - only writes the output when useEMBEDSRC in eedata is true
1952    o clean up 3-dim. relaxation codes:
1953      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1954      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1955      * Thanks to Tom Haine for testing!
1956    
1957    checkpoint57z_post
1958    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1959      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1960    o fix the pickup behavior for obcs in combination with ptracers
1961    o fix a bug in ptracers_external_fields_load
1962    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1963      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1964    o transfered surface NH pressure to eta field (if exactConserv).
1965    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1966         and update lab_sea output.txt file.
1967    o completing 3-dim. relaxation code: additional term
1968         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1969      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1970      * At compile time, in "EXF_OPTIONS.h" set
1971          #define  ALLOW_CLIMTEMP_RELAXATION
1972          #define  ALLOW_CLIMSALT_RELAXATION
1973      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1974          tauThetaClimRelax3Dim = 15552000.0,
1975          tauSaltClimRelax3Dim  = 15552000.0,
1976      * 3 cases:
1977          1) Use a constant-in-time 3-dim. field
1978          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1979          3) Real-time relax. to time-evolving prescribed field
1980    o Adding Laplacian-type smoothness constraint on
1981      initial and boundary (forcing) controls (ic, bc)
1982      * enable at compile-time via
1983        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1984      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1985      * Absolute scale somewhat unclear so far
1986      * no area weighting was included since no other cost term does so far
1987    
1988    checkpoint57y_post
1989    First step for a NLFS adjoint
1990    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1991    o new init. routines for calc_r_star, calc_surf_dr
1992    o still need to deal with ini_masks_etc
1993    o testreport seemed happy
1994    checkpoint57y_pre
1995    
1996    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1997    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1998    o add new offset feature to offline pkg (plus minor cleanup)
1999    o cfc fixes for final year of integration
2000    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
2001      be in GCHEM_OPTIONS).
2002    
2003    checkpoint57x_post
2004    o fix testreport Pb in multiple test experiment.
2005    o cleanup our namelist syntax in verification:
2006      - make it more F95 standards compliant (some work still needed)
2007      - allows the vast majority of our tests to work with gfortran
2008    o Non-Hydrostatic:
2009     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
2010     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
2011    o Allow to apply AB on T,S rather than on AB(gT,gS):
2012     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
2013     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
2014       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
2015     - need a "clever" read_pickup to restart from the other AB formulation
2016    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
2017    o remove some unused variables (reduces number of compiler warnings)
2018    o adjoint
2019      * Disable useVariableViscosity for adjoint for time being
2020        (there are a number of extensive recomputations)
2021      * Initialize certain variables needed for adjoint
2022    
2023    checkpoint57w_post
2024    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
2025                 fix the singleCpuIO RS version of MDSWRITEFIELD
2026       and add a WARNING if using globalFiles=T with multi-processors.
2027    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
2028      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
2029    o tracer advection scheme:
2030      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
2031       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
2032       was not very convenient).
2033      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
2034       (further tests needed for the implicit DST & Flux-Limiter schemes).
2035    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
2036      and sRef for convenience, handy, when you want to initialize
2037      ptracers in a large domain with a constant non-zero value. Also,
2038      untangle ptracers_init.F a little.
2039    
2040    checkpoint57v_post
2041    o change dome exp. to use variable viscosity in side-drag terms.
2042    o remove all the files from the cfc_offline test since they are now
2043      incorporated into tutorial_cfc_offline which has been producing
2044      identical results for a few days of testing
2045    o add new parameter: sideDragFactor to enable half-slip-side BC
2046      and change side-drag S/R to use viscosity from mom_calc_visc
2047      (can switch back by setting sideDragFactor=0.); affects results at
2048      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
2049       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
2050    o vorticity & strain are now computed without masking, to account for
2051      no-slip-side BC in variable viscosity calculation ; mask is applied
2052      anyway later on, before computing advection/coriolis terms.
2053    o modify exp4 to test new obcs support for reading from external files
2054      and for passive tracers
2055    o fix behavior of ptracers_monitor when monitor output is written to a
2056      netcdf-file; still not independent of monitor.F (writes in the same
2057      file).
2058    o change default value of tRef (put a uniform, meaningful value for ocean
2059      & atmos) and initialize sRef (was missing, as Martin mentioned).
2060    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
2061      to be proportional to enstrophy dissipation length.  Thus,
2062       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
2063      This is now consistent with Smagorinsky and with the manual.
2064    
2065    checkpoint57u_post
2066    o OBCS and PTRACERS: add open boundary support for passive tracers
2067      - either use homogenous (pseudo) v.Neumann conditions or prescribe
2068        OB-values from file; this is not different from the way theta and salinity
2069        are treated
2070      - however, Orlanski-radiation conditions are not supported, and the model
2071        will stop if you use pTracers and Orlanski at the same time.
2072      - beefed up the rountine obcs_external_fields_load: now only those open
2073        boundary values are overwritten with values from files for which there
2074        are really files, otherwise the OB-fields remain untouched. This makes
2075        it possible to use different OBs at different ends of the domain (as
2076        with EXF)
2077    o reduce number of exch calls in shap_filt (s2).
2078    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
2079      truncation level) 4/5 MLAdjust test results (11&12 digits match).
2080    
2081    checkpoint57t_post
2082    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
2083    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
2084      same truncation, independent of the face number: affects affects several
2085      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
2086    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
2087      note that biharmonic viscosity + no-slip was not tested in any experiment.
2088    o fix bug in non-linear free-surf side-drag ; generate new output for
2089      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
2090    o make mnc honor the writeBinaryPrec flag for most kinds of output
2091    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
2092    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
2093      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
2094    o add brackets in multi-terms sum to get same truncation, independent of
2095      the face number (manage to get exactly same value of gU,gV at the cs-edge)
2096      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
2097    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
2098      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
2099      a maximum grid-scale Reynolds number.  Also, changes all length calculations
2100      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
2101      Suggested values of viscosity parameters found in mom_calc_visc.
2102      Many new viscosity diagnostics available.
2103    
2104    checkpoint57s_post
2105    o Add clearing-house for viscosity calculations, mom_calc_visc and
2106      correct numerous bugs in LeithD and Smagorinsky discretizations.  
2107      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
2108      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
2109      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
2110      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
2111      The Strain-Tension form is now called with useStrainTensonVisc=.true.
2112      ViscAhStrain and viscAhTension are now retired.
2113    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
2114    o In response to JMC's bug report, genmake2 now ignores any soft-links
2115      that it finds in the *current* directory when searching for files.
2116      Soft-links found in any other source directories will still work as
2117      they did before.
2118    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
2119      a C routine to unlimit the stack size
2120    o mnc-ify pkg/aim snapshot vars
2121    o mnc-ify pkg/land as requested by Daniel
2122    o various changes to mnc including:
2123      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
2124      - output can now be grouped so that all files within a group
2125          change the ITER portion of their names in lock-step together
2126      - can now read ("global") PER-FACE (in addition to PER-TILE) files
2127          and works with both EXCH1 and EXCH2 (but needs more testing)
2128      - writing works for all verification test cases w/ g77 on Linux
2129    
2130    checkpoint57r_post
2131    o make MNC variable initialization happen earlier
2132    o add diagnostics for (almost) each term of the momentum Eq.
2133    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
2134    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
2135    o remove MINIMAL_TAVE_OUTPUT option ;
2136      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
2137    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
2138      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
2139    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
2140    o add time-dependent SST, SSS control
2141    o cost terms in ecco/ modularized (new cost_generic.F)
2142    o cost_averages routines are modularized (new cost_averagesgeneric.F)
2143    o new infrastructure for seaice model vs. obs misfits in seaice/
2144      * driver from the_main_loop.F is seaice_cost_driver.F
2145      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
2146      * gradient check in Exp. 6a of natl_box_adjoint/
2147    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
2148      (see README file)
2149    
2150    checkpoint57q_post
2151    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
2152    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
2153      - bug was reported by Jean-Michel and Ian Fenty
2154    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
2155      update exp. cpl_aim+ocn output.
2156    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
2157      Needed for high-res. runs with large global files
2158      to be able to limit tapelev size
2159    o Changed some tests for adjoint:
2160      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
2161      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
2162      * global_ocean.90x40x15/ back to default 3-level checkpointing
2163    o Modifications to enable scripted COMMON to MODULE conversion
2164      * verification/OpenAD/code/ has necessary scripts and description;
2165      * converts, compiles and runs successfully;
2166    
2167    checkpoint57p_post
2168    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
2169    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
2170      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
2171    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
2172    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
2173      (was already the case for dissipation with mom_vecinv,
2174       and also the case for grad.PhiHyd when staggered-timeStep)
2175      This will allow to put dissipation out-off the AB time-stepping.
2176     Unfortunately, affects truncation error. Update output of exp. that "fails"
2177      (cg2d matching number) and leave the others for later: front_relax(10),
2178      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
2179      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
2180    
2181    checkpoint57o_post
2182    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2183      (2) its ready to be documented during the 20050801 DocFest
2184    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2185      for ideal_2D_oce and lab_sea on linux_ia32_g77
2186    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2187      in global1x1_tot/code_seaice_adj to access indices 32, 33
2188      (worth another tag)
2189    
2190    checkpoint57n_post
2191    o adding precip control xx_precip 32
2192    o adding swflux control xx_swflux 33
2193    o Replacing 10 forcing penalty cost routines by 1 generic.
2194    o Implementing partitioning in time-mean and variable adjustment
2195      for atmos. state.
2196    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2197    o in natl_box_adjoint:
2198      * updated exp 1 to 10
2199        (but does not have time-mean vs. variable split results yet)
2200    o updated global1x1/*_seaice_adj/
2201      to incorporate latest changes
2202    o enable useSingleCpuIO for mdsio vector routines
2203      (applies in particular to tapelev I/O)
2204    o removed inefficient K-loop in all active_file*control*.F
2205    
2206    checkpoint57m_post
2207    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2208      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2209    o pkg/exch2: filling of face-corner halo regions is optional
2210      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2211    
2212    checkpoint57l_post
2213     tag before updating tutorials (pre-release-2)
2214    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2215       for output and interpolation of input fields onto model grid)
2216    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2217       Affects results of exp. rotating_tank ; update output.txt.
2218    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2219          and taking the square quantity and/or using a fraction-weight field.
2220    o fix aim_diagnostics_init.F mate numbers.
2221    o add mnc output capability to diagnostics/diagstat and update
2222      our cvsignore files for the ACSII output generated
2223    
2224    checkpoint57k_post
2225    o lab_sea now uses diagnostics package and provides a suite of
2226      new EXF diagnostics output.
2227    
2228    checkpoint57j_post
2229    o exf
2230      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2231        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2232        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2233      * extended diagnostics output
2234        - now includes all EXF variables
2235        - hs, hl moved to common block
2236        - separate S/R for diagnostics, called after ctrl vector is added
2237        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2238        - EXFqnet contains true Qnet (i.e. includes qsw)
2239      * updated verif. lab_sea, global_with_exf
2240      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2241        to ensure that diagnostics sees a true EXFqnet
2242    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2243    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2244      several times with different frequencies.
2245    o mnc-ify the thsice package as requested by Daniel Enderton
2246      - the monitor--MNC output needs work
2247      - many attributes need to be added (most are currently blank)
2248    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2249      - many attributes need to be added (most are currently blank)
2250    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2251    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2252    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2253      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2254         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2255    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2256     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2257    
2258    checkpoint57i_post
2259    o Diagnostics package was changed: diagnostic allocation is now deactivated
2260      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2261    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2262      add 1rst Order upwind vertical Shear.
2263    o add a quick fix for A/B checkpointing in OFFLINE mode
2264    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2265      end-run around the C/Fortran linking horror in eesup/src/timers.F
2266    o added pkg/runclock: allows user to terminate run based on wall clock
2267    o added non-hydrostatic scaling parameter: nh_am2
2268    o pkg/my82: futile attempt to make results compiler-independent by adding
2269      some "_d 0", etc. no effect.
2270    o for mnc output, fill the 'T' coordinate var with myTime and create a
2271      separate 'iter' variable for iteration count
2272    o pkg/diagnostics:
2273      add new capability: output of Global/Regional & per-level statistics ;
2274      tested against monitor output (including land & thSIce) on various exp.
2275    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2276    
2277    checkpoint57h_done
2278      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2279      data.diagnostics, data.gchem, data.ptracers) is done.
2280    
2281    o pkg/diagnostics: prepare for Global/Regional statistics.
2282      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2283    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2284      and rename it: DIFFERENT_MULTIPLE
2285    
2286    checkpoint57h_post
2287    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2288    o pkg/diagnostics: change output frequency, now in seconds (instead
2289      of Nb of iterations). This requires to change data.diagnostics.
2290    checkpoint57h_pre
2291    
2292    o in mnc, let the user create the output dir if both mnc_outdir_date
2293      and mnc_outdir_num are false
2294    o add fflags() to pkg/diagnostics which allows one to specify, on a
2295      per-file basis, the file precision [default behavior is unchanged]
2296    o added diagnostics to pkg/kpp, including computation of mixed layer
2297      depth based on a temperature/density criterion
2298    o updated verification/natl_box to test the new pkg/kpp diagnostics
2299    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2300    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2301    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2302      not mnc -- this mistake was found by JMC and is now corrected
2303    
2304    checkpoint57g_post
2305    o add Adams-Bashforth 3rd Order time stepping:
2306      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2307      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2308    checkpoint57g_pre
2309    
2310    o make lambda[Theta,Salt]ClimRelax spatially varying
2311      (default remains spatially uniform constant based on tau)
2312    o added new control variables
2313      * init. uVel, vVel, etanN
2314      * lambda[Theta,Salt]ClimRelax
2315    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2316      (suggested by G. Forget)
2317    
2318    checkpoint57f_post
2319    o add parameter "baseTime" = model base time = time at iteration zero
2320      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2321      account for baseTime shift
2322    o move Coriolis arrays from PARAMS.h to GRID.h
2323    checkpoint57f_pre
2324    
2325    o mnc-ifying the seaice package
2326    o introduced an alternative length scale calculation for use in the limiting
2327      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2328    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2329    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2330      as well as grad(vort3).  Made it compatible with both approximate form
2331      for the cubed sphere and full form of these gradients.  Added flag
2332      useFullLeith to select between approximate and full form.  
2333    o add "d0" in getcon.F to reduce differences between compilers/platforms
2334      update output.txt of exp. fizhi-gridalt-hs
2335    o change port_rand funtion to allow to set the seed.
2336    o fix obscure MNC bug involving conversion between reals and integers
2337      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2338        new version is now more standards-compliant
2339    o adjoint-related modifications
2340      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2341      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2342      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2343    
2344    checkpoint57e_post
2345    o Adding eddy stress controls a la Ferreira et al.
2346    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2347    
2348    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2349      update output.txt of exp. fizhi-gridalt-hs
2350    o add more "Z" dimensions and associated coordinate vars to MNC
2351    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2352    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2353      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2354      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2355      months and years.  Requires pkg/cal.
2356    o diagnostics: add pickup functionality
2357      - off by default for backwards compatibility
2358      - current version only uses MDSIO -- MNC will be added
2359    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2360    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2361    
2362    checkpoint57d_post
2363    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2364    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2365      output from the diagnostics package
2366    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2367    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2368      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2369    o add coordinate variables to the MNC output from the diagnostics package
2370    o change MNC-flags default value: true when useMNC=TRUE
2371    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2372      the ability (off by default) to read the grid information using MNC
2373    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2374    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2375    o do snap-shot diagnostics at the middle of the time-interval (instead of
2376      at the end).
2377    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2378      new test for AIM with thSIce + slab-ocean
2379    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2380    o move state variable diagnostics to the beginning of the time step ;
2381      (note: still needs some work specially for snap-shot diagnostics)
2382      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2383    
2384    checkpoint57c_post
2385    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2386    o generate new output.txt files on faulks with g77 & the new -ieee option
2387    checkpoint57c_pre
2388    
2389    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2390      update output.txt of exp. global_ocean.90x40x15
2391    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2392      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2393    o add saltFlux(+File) forcing capability with periodicExternalForcing
2394    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2395    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2396    o improvements for the MNC output from DIAGNOSTICS:
2397      - correct handling of the unlimitied dimension
2398      - all dims now have associated coordinate variables
2399      - variables located at U, V, and Corner ("Z") points are now written
2400        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2401        *all* data points are output
2402    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2403    o added pkg/seaice/seaice_monitor.F
2404    o mdsio_readfield.F can now read files visible only to master MPI process.
2405    o pkg/seaice: some test code for ice-modified ocean stress
2406    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2407      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2408      spurious negative numbers for precipitation and humidity.  Will cause
2409      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2410    o pkg/ctrl/
2411      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2412        May be enabled via doPackDiag
2413      *  introduce z-scaling of
2414         + gradient (doZscalePack) and
2415         + control (doZscaleUnpack)
2416    o pkg/mdsio/
2417      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2418      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2419    
2420    checkpoint57b_post
2421    o simplify options in diagnostics_fill arguments (remove weird combinations)
2422    o fix MNC coordinate variables so that they now contain per-face index
2423      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2424      general, EXCH2 grids are only aligned to a "local" coordinate system
2425    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2426    o Implement instantaneous output within pkg diagnostics:
2427      setting a negative frequency in data.diagnostics produces
2428     "snap-shot" output (as opposed to time-average if freq > 0)
2429    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2430      NOTE: change ptracer diagnostics name: use 2 characters to work with
2431            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2432    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2433      becomes the coordinate variable for the 'T' dimension
2434    o add CF-style coordinate variables to MNC
2435      - just a first cut:  numbers are meaningless on the cubesphere and
2436        missing along the T axis but otherwise it works!
2437    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2438    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2439    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2440      this is based directly on what the model compute, so that the content of
2441      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2442    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2443    o clean up build options files for SunOS, in particular
2444      - remove -traditional from xmakedepend
2445      - change -xarch=v9 to -xarch=native for f77
2446      - restore use of make (not gmake)
2447      - add CC=gcc if using g77
2448    o changes per discussion of AM, JMC, & EH3 today:
2449      - move redundant "grid" variables out of "state" -- in preparation of
2450        creating proper CF-style coordinate variables and in recognition
2451        that any/all grid variables can be easily copied (eg. w/NCO) from
2452        the grid files into any of the other NetCDF files
2453      - *always* output grid variables with MDSIO (this will eventually be
2454        changed)
2455      - output MNC grid file if useMNC is true
2456    o every instance of _END_MASTER() has been found and replaced with
2457      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2458      preprocessors
2459    o re-arrange diagnostics pkg initialisation:
2460     - allow each package to extend the available diagnostics list
2461     - add some checking and fix small problems (multi-threaded, ...)
2462     - new S/R diagnostics_fill (replace fill_diagnostics):
2463       look through the short list of active diag. (instead of the long list)
2464       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2465    
2466    checkpoint57a_post
2467    o this set of changes restores TAMC compatibility
2468      tested for global_ocean.90x40x15 adjoint on trough
2469      (what a pain)
2470    
2471    checkpoint57a_pre
2472    o some modifs in tools/build_options for sunos
2473    o call ctrl_pack for ctrl at end for optimcycle=0
2474    
2475    checkpoint57
2476    o add horizontal bi-harmonic viscosity for vertical velocity
2477      - new parameter viscA4W (defaults to viscA4)
2478      - affects only non-hydrostatic code
2479      - to be done: no-slip lateral boundary conditions
2480    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2481    o implement Implicit Vertical advection for pTracers
2482    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2483      (implemented also for implicit vertical diffusion & advection)
2484    o OBCS: extend application of tracer open boundary conditions
2485      to a strip beyond the boundary of width Olx/Oly
2486    o add call monitor to TAF set of required calls (flow directives)
2487      and include in natl_box_adjoint
2488    o untangle a few ifdefs related to cost, ctrl, autodiff
2489      untangel a few ALLOW_ECCO_OPTIMIZATION
2490    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2491      (theta2, salt2 in ecco_cost_weights)
2492    
2493    checkpoint56c_post
2494    o OBCS as control variables
2495      - update ctrl_ad_diff.list, obcs_ad_diff.list
2496      - remove balance of obcs controls from default
2497      - fix index bug nobcs in ctrl_init
2498      - fix dummy fields filen in ctrl_pack
2499      - add dummy weights for obcs
2500    o lsopt: comment out fort.94 output
2501    o optim:
2502      - remove unnecessary header files
2503      - adjusted namelists
2504      - add xerbla.F to Makefile
2505    o exf:
2506      - multiple modifications of exf_check_range
2507      - unit change in exf_init_runoff from [m/year] to [m/s]
2508    o mdsio:
2509      - i/o-vector change debugLevel from debLevA to debLevB
2510    
2511    checkpoint56b_post
2512    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2513      is called from DO_THE_MODEL_IO
2514      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2515      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2516      - clean up PTRACERS_WRITE_TIMEAVE a little
2517    o add another verification experiment that tests both the cfc-pkg and
2518      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2519      reactive tendencies treated inline with regular timestepping
2520    o testreport previously did a lousy job of comparing small numbers, so
2521      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2522      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2523      testreport.
2524    o ptracers_monitor: bug fix for MPI
2525    
2526    checkpoint56a_post
2527    o GCHEM: finish reorganizating the package
2528      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2529        (introduces another 3D-array for each passive tracer, but only if
2530        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2531        gchemTendency is not needed because the timestep is done separately)
2532      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2533      - GCHEM is now---more or less cleanly---separate from PTRACERS
2534      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2535        so clear to me how that should be done in a general way.
2536    o CFC: improve formatting of output in CFC_ATMOS
2537    o PTRACERS:
2538      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2539        that ALL experiments with ptracers enable can be checked. This makes
2540        GCHEM_MONITOR obsolete.
2541      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2542        monitorFreq
2543      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2544    o add PTRACERS (PTR0[1-5]) to testreport output
2545    o exf_check_range:
2546      * default changed to .TRUE.
2547      * will check values for niter0 if debLevA, every timestep if debLevB
2548      * STOP in exf_check_range if 'out of range'
2549      * range chosen generous to allow for potential extema
2550      TBD: a version with stricter range
2551           permitted range would be runtime parameters
2552    o GMredi:
2553      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2554      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2555      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2556    o GCHEM:
2557      - move call to GCHEM_FORCING_SEP, so that it is now called before
2558        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2559      - introduced a useGCHEM runtime flag and applied it everywhere.
2560      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2561        this flag is now only visible within GCHEM-pkg routines.
2562      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2563        be replaced by a 3D array that is computed before thermodynamics; for
2564        this, the tracer ID iTracer had to be included into the parameter list
2565        of ptracers_forcing
2566      - set up forward_step to call gchem_forcing, that will replace
2567        gchem_forcing_int in ptracers_forcing
2568      - cleaning up
2569    o small cleaning of exch2: remove files that are also in eesupp/src
2570    
2571    checkpoint56
2572    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2573    o mnc: cleanup "full" files--fixes out-of-memory problem
2574    o ECCO-GODAE
2575      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2576      * fully merged and updated from SIO code
2577        windstress sign change affects
2578        - exf_inscal_[u/v]stress
2579        - sign of xx_tau[u/v] adjustments
2580        - signs in cost_scat
2581      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2582      * natl_box_adjoint updated and compressed
2583      * 2-level checkpoint switch added
2584        (tested in EXP. 1 of natl_box_adjoint)
2585      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2586    o SVD
2587      * first complete, non-hacked version for SVD calculations
2588      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2589        performed via direct access files admtlm_vector.it????
2590        (via ctrl_[un]pack)
2591      * optimcycle is used for ARPACK iteration counter
2592        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2593      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2594        and add linear transforms where necessary
2595      * controls are initial/final SST, SSS (can be extended; need to check
2596        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2597    o mdsio: filename info to both stderr, stdout
2598    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2599      from sign change
2600    
2601    checkpoint55j_post
2602    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2603      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2604    o add consistent build directories and .cvsignore files to verification
2605    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2606    o make all subroutines 30 or less characters in length for certain older
2607      compilers to work (a thorough search only turns up two routines in
2608      pkg/ptracers)
2609    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2610      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2611    
2612    checkpoint55i_post
2613    o change arrays for total vertical diffusivity (2.D if explicit,
2614      3.D if implicit) ; each ptracer uses its own background value.
2615    o added mnc/NetCDF output capability to ocn_compon_interf
2616      - added bits to verification/cpl_aim+ocn so that it can run on
2617        ITRDA and other clusters without the mpirun "-wd" option
2618    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2619      configuration
2620    o give MNC the ability to create additional files rather than
2621      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2622      - the default is just less than 2GB which is a practical limit
2623        on many systems
2624    o Compute the non-local term using either KPP vertical diffusivity (=default)
2625       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2626    
2627    checkpoint55h_post
2628    o add verification test "vermix"
2629    o remove all the *_ioinc flags and replace with the single global
2630      outputTypesInclusive flag
2631    o allow to set a vertical profile of vertical diffusivity for T & S
2632    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2633    o useMNC moved from data.mnc to data.pkg
2634    
2635    checkpoint55g_post
2636    o Renaming carbon AD experiments to comply with testreport conventions
2637    o Updating adjoint of Held-Suarez hs94.1x64x5
2638    o Fixing directives for non-ECCO forward_step, after ECCO directives
2639      have been fixed to avoid recomp. of do_oceanic_phys
2640      Works well for global_ocean.90x40x15,
2641      but recomp. issue remains for carbon
2642    o Updating adjoint output for natl_box_adjoint after
2643      pkg/ecco has been modified (see taga c55d_post)
2644    
2645    checkpoint55f_post
2646    o rename to timeave_init_fixed
2647    
2648    checkpoint55e_post
2649    o some delicate re-shuffle of store directives to avoid one
2650      extra call of do_oceanic_physics
2651      affects ecco_the_main_loop.F, do_oceanic_physics.F
2652      checkpoint_lev1_directives.h
2653    o NB: this may break global_ocean adjoint temporarily,
2654      but it is clear how to fix it. Will do later, need this now.
2655    
2656    checkpoint55d_post
2657    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2658    o ecco_cost_weights is modified to 1x1 runs
2659    o modifs to allow observations to be read in as
2660      single file or yearly files
2661    o enable to read exf forcing fields as either
2662      single file or yearly files (flag useExfYearlyFields)
2663    checkpoint55d_pre
2664    
2665    o switch between 2-level and 3-level checkpointing
2666    o add ability of MNC to write local and "partial" (eg. 2D slices where
2667      the full 3D field is never actually stored) arrays to NetCDF files
2668      with the correct (that is, the complete multi-dimensional) set of
2669      array indicies
2670      - used in mom_vecinv() to write the diagFreq output
2671      - tested (demonstrated) in verification/aim.5l_cs
2672    o further mnc-ification
2673      - add verification/lab_sea to the list with mnc setups
2674      - fix undefined mnc v-names in cd_code
2675      - add kpp to mnc output (both snapshot and timeave)
2676    o non-hydrostatic code
2677      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2678        in calc_gw.F
2679      - defaults to viscAh
2680      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2681        friction or Leith) in non-hydrostatic mode, as long as there is
2682        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2683    o pkg/cost
2684      extend simple cost functions to treat time mean quantities
2685      (T,U,V) via cost_accumulate_state from cost_tile
2686    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2687        be 2 times larger than the minimum size the advection scheme requires.
2688        now get a perfect conservation of salt in advect_cs test-exp (updated)
2689    o GGL90 (Gaspar's TKE mixed layer)
2690      - add horizontal diffusion of TKE, requires exchanges in
2691        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2692        default. In OPA there is no horizontal diffusion of TKE but the
2693        mixing coefficients are computed from a horizontal average of TKE of
2694        6 points or so. I think that diffusion has a little more physical
2695        justification.
2696      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2697        was in vain)
2698      - mask tke-variable in ggl90_init
2699    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2700    o fix biharmonic diffusion on CS-grid.
2701    o more obcs stuff
2702      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2703        for reading boundary values. This routine is called from
2704        obcs_prescribe_read
2705      - updated obcs_check
2706      - changed sponge layer relaxation parameter units for days to seconds
2707      - turned off sponge layer by default
2708      - changed argument list of OBCS_CALC to myTime+deltaTclock
2709      - fixed about 35 bugs in obcs_external_fields_load
2710    
2711    checkpoint55c_post
2712    o obcs stuff
2713      - new runtime flags useOBCSprescribe, useOBCSbalance
2714      - re-arranged obcs_calc
2715      - moved exf_getobcs to obcs_prescibe_read
2716        obcs_prescibe_read is called after ORLANSKI stuff
2717        and independent of it (executable can contain all).
2718      - updated obcs_check
2719      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2720        These may be necessary only if tangential velocities are
2721        prescribed at OB, not sure, needs testing.
2722    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2723      which simplifies the calls and passes the ifc check-bounds test
2724    
2725    checkpoint55b_post
2726    o add a 2D scalar, Z location, exchange_2 routine.
2727    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2728      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2729      affects advect_cs results (for the wrong reason): update output.txt
2730    o use a more standard discretization for biharmonic viscosity ;
2731     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2732      affects results of dome set-up: update output.txt
2733    o fix gad_advection.F (CubedSphere part), back to version 1.23
2734    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2735    
2736    checkpoint55a_post
2737    o merged code to
2738      * prescribe/read time-dependent open boundaries
2739        (works in conjunction with exf, cal)
2740      * sponge layer code for open boundaries
2741      * each boundary N/S/E/W now has its own CPP option
2742        (healthy for the adjoint)
2743    
2744    checkpoint55
2745    o up-to-date adjoint of previous breaks
2746      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2747      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2748      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2749      - carbon: * remove tr1-related adjoint verification
2750                * add ptracer as control variable
2751    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2752      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2753    
2754    checkpoint54f_post
2755    o in verification/carbin/ remove experiment related to
2756      ALLOW_PASSIVE_TRACER (array tr1 etc)
2757      code_ad/ input_ad/ results_ad
2758    
2759    o add two new packages
2760      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2761        + subject to optimization (memory)
2762      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2763        + subject to reordering (many GOTOs in the original code)
2764        + so far opps is called for every (i,j) point, and then operates in
2765          the vertical; one may want to reorder the scheme in order operate in
2766          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2767          fields)
2768    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2769      - all verification tests compile and run with linux_ia32_g77
2770      - defaults are compatible with current input files--nothing
2771        should change if you were not previously using MNC
2772      - MNC output has been added in numerous places (eg. timeave)
2773        but there are still a few writes not yet do-able with MNC
2774        (this is in progress)
2775      - flags now allow for either/or/both use of MDSIO and MNC and
2776        documentation will soon follow
2777      - numerous small formatting cleanups for ProTeX
2778    o add version info (via BUILD_INFO.h) to MNC and stdout
2779    
2780    checkpoint54e_post
2781    o add two new packages
2782      - pp81 (Packanowski and Philander, 1981), Richardson number and
2783        stratification dependent mixing
2784      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2785      - these scheme operate in a similar manner as KPP (without ghat, of
2786        course), however there is only one diffusivity that is used for both
2787        temperature and salinity (and passive tracers)
2788    o add offline package
2789    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2790      provided by Stephanie Dutkiewicz
2791    o genmake2: add ability to search for C compilers and cleanup test output
2792      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2793    
2794    checkpoint54d_post
2795    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2796    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2797      leading to additional shift by 5 days each year of integration
2798       (i.e. leading to considerable offset over the years)
2799    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2800    o start with no AB and no initial filtering (staggerTimeStep):
2801      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2802    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2803      (external loading & cpl import/export stay in forward_step.F)
2804    o update coupling interface to work with new staggerTimeStep
2805    o change MDSIO ptracers_pickup.
2806    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2807    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2808    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2809    
2810    checkpoint54c_post
2811    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2812      this affects (truncation error) output.txt of test-exp:
2813       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2814    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2815    o change Qnet to always be the net heat flux, (+upward).
2816      affects (truncation error) output of natl_box exp.: updated
2817    o define the max number of passive tracers in PTRACERS_SIZE.h
2818    o start to test mnc routinely in exp0
2819    o add sea-ice loading (sIceLoad) as a new forcing field.
2820    
2821    checkpoint54b_post
2822    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2823       impressive on Altix and Opteron systems)
2824    o diagnostics can now write NetCDF files through the mnc package
2825    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2826    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2827    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2828      affects (truncation error) output of lab_sea & natl_box exp.: updated
2829    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2830    
2831    checkpoint54a_post
2832    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2833    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2834    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2835    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2836      + internal_wave (shift in writing cg2d_ini_res)
2837    checkpoint54a_pre
2838    
2839    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2840      - modified verification/lab_sea and natl_box_adjoint accordingly
2841    
2842    checkpoint54
2843    checkpoint53g_post
2844    o prepare splitting of thermodynamics: store convect.counter in common block
2845    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2846      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2847    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2848    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2849    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2850    o restore adjointability
2851    
2852    checkpoint53f_post
2853    o modifications that affect AIM experiment results (update output.txt):
2854      - no advection of S at top interface Nr (pkg/generic_advdiff)
2855      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2856    o AIM pkg:
2857      - include stability function into surf.Flux derivative relative to Tsurf
2858      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2859    
2860    checkpoint53e_post
2861    o merged cylindrical coord configuration
2862    o added rotating_tank experiment
2863    checkpoint53e_pre
2864    
2865    checkpoint53d_post
2866    o faulks upgraded: re-generate output.txt that have changed:
2867       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2868    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2869    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2870    o added Sadourny discretization of Coriolis
2871      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2872      - re-enabled use of omega3 (useAbsVorticity)
2873    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2874      vector-invariant equations
2875      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2876    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2877      hopefully without new bugs
2878      - still to do: biharmonic friction for non-hydrostatic w
2879    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2880    o regenerated output for global_ocean_ebm (using -ieee)
2881    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2882      of mom_common/
2883      - simple re-arrangement of instructions within computing loop
2884    checkpoint53d_pre
2885    
2886    checkpoint53c_post
2887    o new version of coupler for AIM+thSIce and Ocean models
2888     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2889     - land: change Evaporation of snow
2890     - aim with thSIce: fix bug in snow-precip.
2891    o changes to calc_gw.F
2892     - bug fix for w^2 term near the bottom boundary
2893     - (hopefully) improve the lateral slip boundary condtions for use with
2894        partial/looped cells
2895      - because the bug fix changes two verification experiments anyway (exp5
2896        and plume on slope), change the lateral boundary condition from half slip
2897        to the value of no_slip_sides
2898    o ebm package wasnt quite up to the parallel task. Fixed that.
2899    o Adjoint of EBM package + verification
2900      * TLM OK
2901      * ADM not sufficient accuracy yet (needs further testing)
2902    
2903    checkpoint53b_post
2904    o Commiting new energy balance model to repository
2905      * package is pkg/ebm
2906      * verif. is verification/global_ocean_ebm
2907      * references are in ebm_driver.F
2908    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2909    C        Global thermohaline circulation. Part I:
2910    C        Sensitivity to atmospheric moisture transport.
2911    C        J. Climate 12(1), 71-82
2912    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2913    C        Global thermohaline circulation. Part II:
2914    C        Sensitivity with interactive transport.
2915    C        J. Climate 12(1), 83-91
2916    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2917    C        Destabilization of the thermohaline circulation
2918    C        by atmospheric eddy transports.
2919    C        J. Climate 7(12), 1870-1882
2920    o Will need long integration testing.
2921    checkpoint53b_pre
2922    
2923    o created pkg/mom_common in preparation for variable viscosity code
2924    o renamed and split ini_mnc_io
2925    o pkg/land: only liquid water can diffuse or run-off
2926    o AIM using land: soil wetness availability account for snow
2927    o added printMapIncludesZeros to EEPARMS namelist
2928    
2929    checkpoint53a_post
2930    o restore TAMC compatiility for exf_constants.h
2931      (no usage of _d in .h)
2932    o Additional storing in KPP in an attempt to fix
2933      TAMC problem with adjoint of KPP code.
2934      (no success...)
2935      Identical code works fine with TAF.
2936    o Fixed verification/natl_box_adjoint experiments.
2937      Initial conditions for Experiments 4 and 5 are now
2938      set to "SEAICE_initialHEFF=0", which is more reasonable,
2939      and hence gives results closer to that of Experiment 2.
2940      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2941    
2942    checkpoint53
2943    o stable checkpoint with up to date adjoint
2944      TLM tests only run for 1st grdchk at the moment. Its unclear if
2945      this is a code problem or a problem with resetting code for g_
2946      variables that is being autogenerated wrong.
2947      Otherwise:
2948       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2949       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2950         are both still in chaos following their security messes.
2951    
2952    checkpoint52n_post
2953    o various build (mostly genmake2) changes including:
2954      - ability to build/run more easily within Cygwin and MacOS X
2955      - more complicated Makefiles with a stronger dependence on Gnu Make
2956    o pkg/seaice modifications
2957      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2958        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2959        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2960      - changed proxy for geostrophic velocity and updated
2961        verification/lab_sea/results/* accordingly
2962      - removed ADI dynamic solver from pkg/seaice
2963      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2964        they caused a segmentation fault under certain circumstances
2965      - removed unused field WATR
2966    o bug fix in exf-package:
2967      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2968         now reflect that.
2969    o small fixes in the cal-package:
2970      - set reference date to first of January for the 'model'-calendar
2971      - failing of cal_CheckDate in cal_FullDate now actually results in a
2972        warning
2973    o small modifications in exf-package to increase flexibility:
2974      - change climtempfreeze from a constant to a runtime parameter that
2975        is specified in data.exf_clim (default = -1.9)
2976      - introduce runtime parameter windstressmax (default = 2.0) that is
2977        specified in data.exf
2978    o fix in pkg/thsice:
2979      - update Evap (Tsf changes) to be consistent with Latent heat flux
2980      - maintain snow precipitation unchanged (even if Tsf >=0).
2981     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2982    
2983    checkpoint52m_post
2984    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2985      this does not change any of the results, because myIter=0 in swfrac always
2986      lead to jwtype=2 (the default anyway), but the call makes little sense
2987      as a default
2988    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2989    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2990      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2991    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2992    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2993    o extending useSingleCpuIO option to work with new exch2 I/O format
2994      - old-style, missing-tile I/O is still accessible by defining CPP
2995        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2996    o monitor package can write to NetCDF files and/or STDOUT
2997    o fix re-definition bug in MNC_GRID_INIT_ALL()
2998    o doc/api_reference added
2999      - a framework for building an API Reference Manual using all
3000        the "protex" comments embedded in the code
3001      - see pkg/generic_advdiff, pkg/mnc for examples
3002    o MNC:
3003      - make myThid the last argument for all subroutines
3004      - new default for the grid files: NO halos
3005      - add useMNC and other run-time flags
3006      - separate per-file-group handling of the unlimited dimension
3007      - early initialization of MNC w/ flags read at the eeboot stage
3008        and lookup tables set in initialize_fixed
3009      - write all MNC output to a freshly-created directory
3010    o thermodynamics sea-ice (thsice) is now tested with testreport.
3011    o test exp. advect_cs: use the standard cs32 grid ; update output.
3012    o Added functionality to grdchk:
3013      pick global i,j,k position (or nearest wet) where to perform check.
3014    
3015    checkpoint52l_post
3016    o new land formulation:
3017      a) use ground enthalpy as prognostic variable to ensure exact
3018         energy conservation.
3019      b) account for water temperature and for latent heat of freezing
3020         in all processes (rain, run-off, ground storage)
3021      c) compute surface and ground temperature implicitly.
3022    o aim_v23 modification for new land model:
3023      a) Treat separately land / ocean / sea-ice surface fluxes
3024         to allow implicit computation of land & sea-ice surface temp.
3025      b) add snow precipitation.
3026    checkpoint52l_pre
3027    
3028    o fix problem (when 1 tile is empty) in min/max monitor.
3029    o fix bug in timeAve (u,vZetatave in common block)
3030    o no restoring terms under ice for pkg/seaice
3031    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
3032    o bug fix for pkg/seaice pickups
3033    o change MNC call locations and add coordinate attributes
3034    o mask vorticity at the corner ; affects global_ocean.cs output
3035    o fix ini_curvilinear_grid ; test CS experiments with mpi
3036    o aim.5l_cs: modify sea-ice fraction input file ; update output
3037    o exf: Adding simple range check routine for exf fields after read
3038    
3039    checkpoint52k_post
3040    o removed top-level directory "diags"
3041      - we migrated these functions to pkg/timeave a long time ago
3042    o fixed bug introduced in pkg/monitor
3043    o accuracy ctrlprec = 32 insuffient for gradient checks using
3044      averaged fields (I/O via cost_averages)
3045      -> use ctrl.h in active_file*.F to control I/O precision.
3046    o paramter list of CALL ADTHE_MAIN_LOOP
3047    o added initial do_the_model_io to ecco
3048    o set all ...Freq to zero after cost_final
3049      taveFreq, dumpFreq, pChkptFreq
3050    o MAIN and ECCO differentiability restored
3051    
3052    checkpoint52j_post
3053    o fix nchklev in tamc.h for global_ocean...
3054    o Bringing flow and store directives up-to-date
3055    o Really weird thing!
3056      call do_the_model_io from the_main_loop with parameters
3057      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
3058      TAF places a faulty re-call of initialise_varia
3059      after cost_final call which should not be there!
3060    checkpoint52j_pre
3061    
3062    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
3063      error messages
3064    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
3065    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
3066      debug output
3067    o modfied mdsio_writefield.F to handle non-global files under exch2
3068    o update AIM Cubed-Sphere exp (aim.5l_cs):
3069      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
3070    o update AIM Equatorial Channel exp:
3071      use standard aim_v23 pkg and change the SST fields to be more realistic.
3072    o globalFile now works with exch2
3073    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
3074      mon_vort3.F to make exch2 friendly with >1 tile per cube face
3075    o limit timeave output for hi-res integrations
3076    
3077    checkpoint52i_post
3078    o removed CPP_EEOPTIONS.h from verification/*/code
3079    o updated the tiling for global_ocean_pressure
3080    checkpoint52i_pre
3081    
3082    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
3083      the old pkg/aim).
3084    
3085    checkpoint52h_pre
3086    o shortened offending lines in exch2_send_rx?.template
3087    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
3088    o genmake2: add build & execute test for NetCDF code
3089    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
3090      old grid files, moved CPP_EEMACROS.h to pkg/exch2
3091    o added useSingleCPUIO flag to monitor.F and mon_out.F
3092    o added temporary hack for sea-ice dynamics on the cube:
3093      metric terms are ignored and it is assumed that
3094      there is no sea-ice on cube faces 1, 2, 4, and 5.
3095    
3096    checkpoint52f_post
3097    o added exch2 cube routines to pkg/exch2
3098    o modified hs94.cs-32x32x5 to use it
3099    o added new grid files to hs94.cs-32x32x5
3100    checkpoint52f_pre
3101    
3102    checkpoint52e_post
3103    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
3104      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
3105    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
3106      to work with implicit vertical advection and AB ;
3107    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
3108    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
3109     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
3110    checkpoint52e_pre
3111    
3112    o fix bug in impldiff when Nr=1 or Nr=2.
3113    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
3114    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
3115    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
3116      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
3117    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
3118    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
3119    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
3120    
3121    checkpoint52d_post
3122    o re-tiled many expts to allow comparison in multi-processor mode
3123      - updated output accordingly
3124      - changed hs94.128x64x5 to use intial T from file rather than use the
3125        random number generator
3126    o add infrastructure in model routines for fizhi and gridalt packages
3127    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
3128    o changes to permit hi-res, cubed-sphere, configuration
3129      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
3130      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
3131      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
3132        of surface winds for the cube
3133      (A verification experiment, based on global_ocean.cs32x15, but with
3134       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
3135       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
3136       complete with example surface forcing files and matlab scripts to look
3137       at the output and compare it with that of global_ocean.cs32x15.)
3138    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
3139       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
3140       to conform to the common rule.
3141    o check-in the first version of the coupler + interfaces for multi-components
3142       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
3143       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
3144       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
3145       - ocean and atmos. share the same horizontal grid (no interpolation).
3146       - exchanges between component and coupler is done in forward_step
3147    o new verification experiment, cpl_aim+ocn:
3148       coupled ocean - AIM atmosphere on cs32 grid.
3149    
3150    checkpoint52d_pre
3151    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
3152    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
3153    
3154    checkpoint52c_post
3155    o Fixing OPTIONS files for use of exf:
3156      - ALLOW_ECCO not needed
3157      - ECCO_CPPOPTIONS.h should not be included from
3158        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
3159        as has been the case in the past
3160      - All cal/exf related options are currently set in
3161        single header file. Should remain so until we
3162        agree on a consistent new policy.
3163    o Removed all CPP options for cal package.
3164      cal has no more CPP options.
3165    o modified STOREs in GAD_ADVECTION
3166    o corrected key comp. for passkey
3167    
3168    checkpoint52b_post
3169    o new version: "thsice" of thermodynamic sea-ice pkg:
3170     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
3171     - modify fluxes but do not change theta directly;
3172     - light cleaning of bulk_force pkg (still needed with thsice).
3173     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
3174       + output_thsice.txt to test thsice & bulk_force pkgs.
3175    o put back grid & coriolis monitor output.
3176    checkpoint52b_pre
3177    
3178    o call "do_the_model_io" at the beginning (=> dump initial state)
3179    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
3180    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
3181      (need info on NUMBER_OF_PTRACERS)
3182    o missing PTRACERS headers in some routines
3183    o default tamc.h in pkg/autodiff supposed to crash
3184      to ensure proper customization
3185    
3186    checkpoint52a_post
3187    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
3188      - moved surfaceTendencyTice from pkg/seaice to main code
3189      - subroutine FREEZE_SURFACE now limits only surface temperature
3190        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
3191        => new output.txt for global_ocean.cs32x15 & global_with_exf
3192      - keep the old version of FREEZE for backward compatibility;
3193        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
3194      - corresponding modifs for TAF directives
3195    o added surface flux output variables to TIMEAVE_STATVARS
3196    o time-averaged output for pkg/ptracers
3197    o fix problem with ECCO-related divided adjoint
3198      snapshot file was missing some ad-variables,
3199      but no warning issued by TAF
3200    
3201    checkpoint52a_pre
3202    o some bug fixes for #undef REAL4_IS_SLOW
3203    
3204    checkpoint52 = ecco_c52_e35
3205    o after testing adjoints of checkpoint51u_post
3206    
3207    checkpoint51u_post
3208    o this is the post-merge tag of the ecco-branch
3209      (needs another clean checkout and re-testing)
3210    o various natl_box_adjoint configs and results
3211      but no input fields
3212    o obcs adjoint not yet merged!
3213    o adding ECCO global 1x1 and 2x2 degree configs
3214    o updated/extended some store directives for seaice
3215    o pkg/ecco now containes ecco-specific part of cost function
3216    o top level routines the_main_loop, forward_step
3217      supersede those in model/src/
3218      previous input data.cost now in data.ecco
3219      (new namelist ecco_cost_nml)
3220    o in ctrl/ cleaned some cross-dependencies and updated CPP options
3221    
3222    checkpoint51t_post
3223    o this is the pre-merge tag of the ecco-branch
3224    
3225    checkpoint51s_post
3226    o cleanup: removed various obsolete #define-s
3227    o pkg/grdchk
3228      - renamed 'ph-grd 3' to 'grad-res'
3229      - merged from ecco-branch
3230        (remaining bug fixes for obcs gradient checks)
3231      - additional high-precision output for testreport
3232        (grep for 'precision_grdchk_result')
3233    
3234    checkpoint51r_post
3235    o cleaned up or removed CPP_OPTIONS.h files
3236    o updated results for some of the tests to reflect the new
3237      optfiles (-ieee: -O0 instead of -O3)
3238    
3239    checkpoint51q_post
3240    o cd_code:
3241      - moved cd_scheme.F -> cd_code_scheme.F
3242      - separate read_checkpoint from cd_code_ini_vars.F
3243      - separated cd_code part from write_checkpoint
3244      - updated AD_SOURCE, generated .flow
3245      - added CD_CODE_VARS.h to the_main_loop
3246      - Moving cd_code specific store dir.s to pkg/cd_code
3247    o ctrl package totally restructured
3248      - pack/unpack now optional and decoupled from
3249        xx_/adxx_ I/O
3250      - ctrl_pack/unpack cleaned
3251        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
3252      - confined inclusion of AD_CONFIG.h to where necessary.
3253    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
3254    
3255    checkpoint51p_post
3256    o create initial cd_code package
3257      - WARNING: the initialization of fields within packages
3258        is broken because INI_FIELDS (where READ_CHECKPOINT is
3259        called) is called *before* PACKAGES_INIT_VARIABLES.
3260        This seems to be backwards since
3261        1) its important to initially zero the entire field including
3262           the "halo" region
3263        2) zeroing needs to be done *before* reading pickup info
3264           and the pickup call might or might not happen in any
3265           particular run
3266      - this needs an overhaul for R2
3267    o cleanup verification/*/code/GMREDI_OPTIONS.h
3268    o cleanup testreport
3269    
3270    checkpoint51o_post
3271    o bringing AD-related verif's up to date with genmake2
3272      - carbon/
3273      - global_ocean.90x40x15/
3274      - hs.94.1x64x5/
3275      - (front_relax/ )
3276    o (more) consistent directory structure for AD-related verif.'s
3277    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
3278    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
3279    o bug fix in find_alpha.F for MDJWF:
3280      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
3281        change rho -> rho-rhoConst
3282      - replace call find_rho to find_rhonum
3283    o initialisation of rFlx extended to full array (required by TAF)
3284      and shifted to thermodynamics
3285    o removed PTRACERS.h in ptracers routine
3286    o added surfacetendencyPtr to S/R parameter list pracers_forcing
3287    o Correcting initialisations for fVerU, fVerV.
3288    o helping TAF to recognize dependency on kUp for
3289      fVerU, fVerV
3290    o Replacing delZ by delR in pkg/ctrl/
3291    checkpoint51o_pre
3292    
3293    o undid all of cp51 pending some cleanups and discussion
3294    o added the [#include "AD_CONFIG.h"] statement to all files that need
3295       it for adjoint/tl #defines
3296     o re-worked the build logic in genmake2 to support AD_CONFIG.h
3297     o removed tools/genmake since it no longer works
3298    
3299    checkpoint51n_post
3300    o modifications to make FREEZE flux visible to pkg/kpp
3301      - moved surfaceTendencyTice from pkg/seaice to main code
3302      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
3303      - subroutine FREEZE now limits only surface temperature
3304        (this means new output.txt for global_ocean.90x40x15,
3305         global_ocean.cs32x15, and global_with_exf)
3306    o added surface flux output variables to TIMEAVE_STATVARS
3307    
3308    checkpoint51n_pre
3309    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
3310    o added [#include "AD_CONFIG.h"] to all files that use the following
3311      defines:
3312      - ALLOW_ADJOINT_RUN
3313      - ALLOW_TANGENTLINEAR_RUN
3314      - ALLOW_ECCO_OPTIMIZATION
3315    
3316    checkpoint51m_post
3317    o incorporating changes to get TAMC/TAF working in genmake2
3318      - added new TAMC/TAF targets to the Makefile
3319      - various cleanups related to package handling
3320      - these changes should have no impact on the forward model
3321    
3322    checkpoint51l_post
3323    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
3324     - faster algorithm for cal_addtime.F
3325     - higher precision arithmetic, where needed
3326     - pkg/exf *startdate variables changed from calendar date to
3327       model integration time
3328    
3329    checkpoint51l_pre
3330    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
3331    o enable to apply restoring on S & T only in a latitude band.
3332    o update output (external_forcing_surf modif. change truncation errors)
3333       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
3334    
3335    checkpoint51k_post
3336    o change default to: useNHMTerms=.FALSE.
3337     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
3338       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
3339     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
3340        exp1, ideal_2D_oce
3341     - change data file of oceanic exp (leave the results unchanged for now)
3342       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
3343    o set gravitySign automatically according to the vertical coordinate used
3344      (and change sign: back to "logical" value: +1 when R increases downward)
3345    o added an include barrier to the default CPP_OPTIONS.h and
3346      removed the #include "PACKAGES_CONFIG.h" from it
3347    o fix a bug in mom_fluxform (from chk51j_post)
3348    
3349    checkpoint51j_post
3350    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
3351    o adjusted some flow directives (dynamics, thermodynamics)
3352    o added cubed-sphere case to test cost function
3353    o heckpoint_lev?_directives.h now include
3354      pkg-specific directives, whenever those are enabled.
3355    o Moving pkg-specific flow directives to corresponding pkg
3356      Moving pkg-specific differentiation list to corresponding pkg
3357      Moving pkg-specific checkpoint-lev storing to corresponding pkg
3358      ---> conventions are
3359           - pkg_ad.flow
3360           - pkg_ad_diff.list
3361           - pkg_ad_check_lev?_dir.h
3362    
3363    checkpoint51i_post
3364    o merge of the branch-genmake2
3365      - knowingly breaks the older genmake
3366      - automatic generation of all ALLOW_${PKG_NAME} defines
3367      - new testreport supersedes older testscript
3368    o large number of package inclusion and header cleanups
3369    checkpoint51i_pre
3370    
3371    o new output for adjoin of global ocean vector invariant
3372    o fix for checkpoint of thermodynamic seaice and bulk_force
3373    o Steph gchem various cleanups
3374    
3375    checkpoint 51h_pre
3376    o fixed some single quotes
3377    o modify gchem pkg to be more versatile
3378    o modifications to clean up dic pkg
3379    o add pkg/cfc
3380    
3381    checkpoint51g_post
3382    o provide links for ARPACK and ADM*TLM
3383    o start removing verification/vero/
3384    o update AD-related stuff
3385      (in particular some IF-statements in model/src/ routines)
3386    o adding to verification/global_ocean.90x40x15/ adjoint of
3387      vector invariant setup
3388    
3389    checkpoint51f_post
3390    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
3391    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
3392      of tracer Green's fucntions for ocean inversion project.
3393    
3394    checkpoint51f_pre
3395    o Added on-the-fly spatial interpolation capability
3396        "USE_EXF_INTERPOLATION" to pkg/exf.
3397      - This is a temporary Cartesian-grid hack until
3398        the super-duper ESMF coupler becomes available.
3399      - See verification/global_with_exf/README for usage example.
3400      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
3401        flags and modified pkg/seaice accordingly.
3402    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
3403        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
3404        non-local transport term.
3405    
3406    checkpoint51e_post
3407    o pkg/mom_vecinv:
3408      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
3409      - add time-ave diagnostic of vorticity advection.
3410    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
3411    o atmospheric geopotential: - include water vapor effect;
3412                                - use p^kappa in p* scaling.
3413    o land pkg: read initial state from files.
3414    o AIM : add stratospheric drag in the upper level
3415    
3416    checkpoint51d_post
3417    o change function ILNBLNK (=> last non-blank char.) to return zero
3418      (instead of the string length) when the string. char is empty
3419    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
3420    o modif's to restore TAMC compatibility
3421      - avoid "_d" constructs in PARAMETER declarations
3422      - avoid interrupting lines by comment lines
3423    o Use cluster local disks for purely local I/O
3424      vs. globally visible disks needed for ctrl stuff
3425      (merged from ecco-branch)
3426      - new active_file_loc... and mdsio_..._loc routines
3427      - affected packages: autodiff, ctrl, grdchk, mdsio
3428    
3429    checkpoint51c_post
3430    o introducing integer flag debugLevel
3431      - debLevZero: suppress all output
3432      - debLevA: standard
3433      - debLevB: equivalent to current debugMode=.TRUE.
3434    o introducing pathname variable mdsioLocalDir for mdsio
3435      that can be specified at runtime
3436      (relevant for cluster I/O to local disk)
3437    `
3438    >>>checkpoint51b_post
3439    adjoint of ptracers
3440    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3441    o extended state in checkpoint_lev?, etc.
3442    o alternative ctrl/cost with tr1 or ptracer
3443    o new comlev1_bibj_ptracers
3444    o new ptracers.flow
3445    o made ptracers_forcing same as external_forcing_s
3446    o added verification for adjoint with ptracers
3447      - adm. grdchk fail so far
3448      - tlm. grdchk OK
3449      - checked tapelev/comlev recomputations: OK
3450    <<<checkpoint51b_pre
3451    
3452    checkpoint51a_post
3453    o added code for biogeochemistry package
3454      - new pkgs: dic, gchem
3455      - new subroutine in ptracers
3456    o modify code for biogeo packages
3457      - in model/src and pkg/ptracers
3458    
3459    checkpoint51
3460    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3461      - autodiff, ctrl, exf, grdchk, seaice
3462      kept separate packages
3463      - cost, ecco, obcs
3464    o updating verification/internal_wave, verification/lab_sea
3465      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3466    
3467    checkpoint50i_post
3468    o Preparing next differentiable checkpoint and sync
3469      of MAIN vs. ecco-branch
3470      - 1st step: this one is differentiable
3471      - 2nd step: next(! not this) checkpoint will have updated packages
3472                  from ecco-branch)
3473    
3474    checkpoint50h_post
3475    o new package "land": provide surface BC for AIM.
3476    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3477    o AIM: use true log-P extrapolation for near surface temp (= as in
3478        F.Molteni paper) ; update aim.5l_cs output.
3479    o New variable in PARM03 for more flexible pickups
3480    o somewhat cleaned package initialisation sequence for
3481      ctrl/ cost/ ecco/ in packages_... routines
3482    
3483    checkpoint50g_post
3484    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3485      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3486      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3487        made the default because of faster convergence than ADI
3488    
3489    checkpoint50f_post
3490    o exf totally restructured
3491      - replaced all exf_set_ routines by one generic exf_set_gen.F
3492        and made sure it's still differentiable
3493      - split exf_getffields.F into new exf_bulkformulae.F
3494      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3495      - updated adjoint/makefile and relevant verif. accordingly
3496    
3497    checkpoint50f_pre
3498     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3499          + change Evap over land. (update aim.5l_cs output)
3500     o added missing .cvsignores and made uniform across expts
3501     o changed configuration of tidal_basin_2d expt
3502     o added pkg/debug functions for tracing code in fatal crashes
3503     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3504     o new fn in pkg/monitor to stop model if solution grows too big
3505     o removed lots of single quotes from comments
3506    
3507    checkpoint50e_post
3508    o make KPP work with PTRACERS
3509     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3510       nearly a copy of kpp_transport_s
3511     - there is no analogue to SurfaceTendencyS, so I have to use
3512       gPtr(of the surface layer) instead
3513    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3514    checkpoint50e_pre
3515    
3516    checkpoint50d_post
3517    o change kpp output from multiple-record state files to single-record state
3518      files analogous to write_state.F
3519    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3520      analogous to the cg2d-related output.
3521    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3522      so that writing to internal file fn (with length 512) fails.
3523    checkpoint50d_pre
3524    
3525    checkpoint50c_post
3526    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3527    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3528    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3529    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3530    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3531    
3532    checkpoint50c_pre
3533    Merging from release1_p13:
3534    o bug fix for pkg/seaice dynamic solver
3535    o Added SEAICE_initialHEFF to pkg/seaice
3536    
3537    checkpoint50b_post
3538    o store u*,v* in gU,V instead of in guNm1,gvNm1
3539    o in order to put the momForcing out of the Adams-Bashforth:
3540      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3541      to timestep.F
3542    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3543    o re-generate output for highly sensitive test-exp:
3544       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3545    
3546    checkpoint50b_pre
3547    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3548    o corrected CPP option mismatch in exf_Bulk... functions for case
3549      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3550    
3551    checkpoint50a_post
3552    o Bug fix for merging between c50 and KPP.
3553      ikey was passed from thermodynamics to kpp_calc via
3554      common block rather than being recomputed in kpp_calc,
3555      in contradiction with new key itdkey.
3556      New key ikppkey created, and tamc.h headers updated.
3557    
3558    checkpoint50
3559    - 2nd step of merge with ecco-branch:
3560      merge changes in ecco-branch back into main trunk
3561    - bug fix in find_alpha
3562    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3563    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3564    - merged some sliced AD support routines
3565    
3566    checkpoint49
3567    merged from ecco-branch:
3568    o exf:
3569      - Enable initialisation of forcing fields to constant
3570        (runtime) values.
3571      - in exf_getffields.F
3572        Reduce i-/j-loop to interior domain, discarding overlaps.
3573        That also fixes wrong TAF-key computations for key_1, key_2
3574        with bulf formulae.
3575      - exf_init.F modify #ifdef for exf_init_evap
3576      - exf_getffieldrec.F, ctrl_getrec.F
3577        The following INT-usages are not safe:
3578          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3579          fldcount = int(fldsecs/fldperiod) + 1
3580        and were modified.
3581    o autodiff: checkpoint_lev...
3582      - updated storing for bulk formulae (some arrays were missing)
3583      - added state for seaice package
3584      - synchronized with main branch
3585    o DIVA:
3586      Modif.s in
3587      - the_main_loop.F
3588      - the_model_main.F
3589      and added cost_final_restore.F cost_final_store.F
3590      o With these changes, it is possible to fully separate
3591        the first forward run to compute the cost function (mdthe_main_loop)
3592        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3593        into separate model executions.
3594        This enables better tuning of DIVA to given queue sizes.
3595      o Loss of cost function value in consecutive DIVA runs is
3596        fixed by storing to 'costfinal' file.
3597      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3598        beginning/end of adjoint integration is accounted for.
3599      The current changes apply to TAF-1.4.26.
3600      TAF has one remaining bug, requiring one manual change
3601      (see MITgcm manual).
3602    o cal: synchronized between MAIN and ecco-branch
3603    
3604    checkpoint48i_post
3605    o Changes to restore differentiability of code w.r.t. previous tag
3606      (mostly adding new routines to make list and replacing
3607      pressure by totPhiHyd).
3608    o Updated and merged grdchk package
3609      - has both ADM and TLM checks
3610      - works for single- and multi-proc.
3611      - output cleaned
3612      - worked successfully for parallel DIVA
3613    o genmake:
3614      - Adding -platform=SP4
3615      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3616    o Modif. for DIVA:
3617      ctrl_unpack should not be called in intermediate DIVA interval.
3618      (similar thing would apply for active files such as
3619      tbar, sbar, psbar, which should not be reinitialised;
3620      only relevant for ecco-branch)
3621    
3622    checkpoint48h_post
3623    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3624    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3625    o Added SEAICE_initialHEFF to pkg/seaice
3626    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3627    
3628    checkpoint48g_post
3629    --- EOS:
3630    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3631      store total Potential in totPhyHyd for diagnostics & EOS.
3632    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3633    --- Pressure/geopotential gradient:
3634    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3635    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3636      ( changes results of global_ocean_pressure )
3637    o NLFS + z-coord.: add eta*Rho' contribution.
3638    o accurate phiHyd when using interface-W at the middle between 2 centers
3639     ( changes results of ideal_2D_oce )
3640    o includes r* 2nd term in potential gradient.
3641    
3642    checkpoint48f_post
3643    Merging from release1_p12:
3644    o Modifications for using pkg/exf with pkg/seaice
3645      - improved description of the various forcing configurations
3646      - added basic radiation bulk formulae to pkg/exf
3647      - units/sign fix for evap computation in exf_getffields.F
3648      - updated verification/global_with_exf/results/output.txt
3649    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3650      (SBO) core products, including oceanic mass, center-of-mass,
3651      angular, and bottom pressure (see pkg/sbo/README.sbo).
3652    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3653      to avoid negative values in shallow regions.
3654      - updated verification/natl_box/results/output.txt
3655      - updated verification/lab_sea/results/output.txt
3656    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3657    o Added useSingleCpuIO option (see PARAMS.h).
3658    o Updated useSingleCpuIO option in mdsio_writefield.F to
3659      work with multi-field files, e.g., for single-file pickup.
3660    o pkg/seaice:
3661      - bug fix in growth.F: QNET for no shortwave case
3662      - added HeffFile for specifying initial sea-ice thickness
3663      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3664    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3665      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3666    o pkg/seaice:
3667      - adjoint-friendly modifications
3668      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3669    
3670    checkpoint48e_post
3671    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3672    o dynamics: change definition of computational domain & adapt mom_fluxform
3673      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3674    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3675        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3676        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3677        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3678        inverted_barometer solid-body.cs-32x32x1
3679      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3680    
3681    checkpoint48d_post
3682    o in preparation for r*:
3683     a) use pre-computed gradient of hydrostatic potential:
3684        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3685     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3686        => affects results of glob_oce_pressure (different truncation error)  
3687      update output.txt of ideal_2D_oce & global_ocean_pressure
3688    
3689    checkpoint48d_pre
3690    o in preparation for r*:
3691      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3692      pass the 2 comp. of the grad. as arguments to momentum S/R.
3693      but for the moment, only used if it does not change the results.
3694    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3695    
3696    checkpoint48c_post
3697    Modifications in treatment of initial flux forcing controls
3698    to avoid extra storing of flux fields.
3699    
3700    checkpoint48c_pre
3701    o Added tidal_basin_2d experiment (currently 1D!)
3702    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3703    
3704    checkpoint48b_post
3705    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3706     (modification to pressure gradient not yet implemented)
3707    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3708      (for U & V) that are used for vertical advection of momentum.
3709    
3710    checkpoint48a_post
3711    o In preparation for r*, use temp. array to compute vertical transport
3712       in flux-form momentum pkg. => change results of few test-exp.
3713      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3714                        lab_sea, natl_box & plume_on_slope
3715    
3716    checkpoint48
3717    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3718    
3719    checkpoint47j_post
3720    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3721    o moved adexch from forward_step to addummy_in_stepping
3722    o added exch in ctrl_map_...
3723    o aveFreq.=0. at end of cost_final to avoid overwrite in
3724      reverse checkpointing loop
3725    o Yet more changes in gmredi:
3726      * adgmredi_calc_tensor
3727        avoiding all recomputation of gmredi_slope_limit
3728      * adgmredi_x/y/rtransport
3729        added flag for excessive storing to avoid recomp. of
3730        u/v/rtans, dTdx/y/z
3731        -> this is not really necessary and very memory-consuming
3732      * adgmredi_slope_psi:
3733        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3734      * gmredi_slope_limit
3735        re-activated full calculation of taperfct for case 'ac02'
3736    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3737    
3738    checkpoint47i_post
3739    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3740    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3741      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3742    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3743    o gmredi: fix few bugs.
3744    
3745    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3746    This will be a good checkpoint to plug into the ecco-branch.
3747    o few modif.'s to get latest version adjointed
3748      (mainly kick out code in ini_linear_phisurf)
3749    o modif's to run adjoint with exactConserv
3750    o case GM_BOLUS_ADVEC should be cleaned
3751      S/R gmredi_slope_psi should be cleaned
3752    o verification/carbon now has exactConserv=.TRUE.
3753    
3754    checkpoint47g_post
3755    o time-average AIM output: becomes independent from statvars time-average
3756      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3757    o After TAF bug fix:
3758      Tested adjoint of gmredi package.
3759      Tests were done with checkpoint47 rather than with latest
3760      checkpoint47f_post since the latter is broken for the adjoint
3761      verification/carbon/ contains both ADM and TLM gradient checks.
3762    Here they are, before they get changed/lost/stolen.
3763    Mostly modif.'s to fix numerical sensitivities.
3764    Gradient checks OK for
3765    - GM_taper_scheme:
3766      * clipping
3767      * ac02
3768      * linear
3769      * glw91
3770      * dm95
3771      * ldd97
3772    - GMREDI_OPTIONS:
3773      * GM_VISBECK_VARIABLE_K
3774      * GM_NON_UNITY_DIAGONAL
3775      * GM_EXTRA_DIAGONAL
3776      * GM_BOLUS_ADVEC
3777    in conjunction with data.gmredi parameters to be checked in
3778    in a few minutes under verification/carbon/code/
3779    
3780    checkpoint47f_post
3781    Merging from release1_p10:
3782    o modifications for using pkg/exf with pkg/seaice
3783      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3784        and SEAICE_EXTERNAL_FLUXES
3785      - pkg/exf CPP options EXF_READ_EVAP and
3786        EXF_NO_BULK_COMPUTATIONS
3787      - usage examples are Experiments 8 and 9 in
3788        verification/lab_sea/README
3789      - verification/lab_sea default experiment now uses
3790        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3791    
3792    checkpoint47e_post
3793    o created a tag prior to creating a branch
3794    
3795    checkpoint47d_post
3796    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3797      at the bottom boundary had an erroneous half slip boundary condition
3798    o added bottom drag and no slip boundary condition capabilities to
3799      oceanic pressure coordinates code
3800    o added new verification experiment global_ocean_pressure, this experiment is
3801      also described in the tutorial section of the manual
3802    checkpoint47d_pre
3803    
3804    checkpoint47c_post
3805    o Added a verification experiment for a global cubed-sphere ocean run
3806      -  verification/global_ocean.cubed32x32x30
3807      -  uses pkg/therm_seaice and pkg/bulk_forcing
3808    
3809    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3810    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3811      when using P-coordinate; only implemented for atmospheric config.
3812    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3813      NOTES: requires option NONLIN_FRSURF to be "#define".
3814    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3815    
3816    checkpoint47b_post
3817    Merging from release1_p9:
3818    o pkg/seaice
3819      - removed GOTO's and added taf directives
3820      - double precision constants to reduce the g77 (Linux)
3821        to F77 (SGI) differences reported in release1_p8
3822    o tools/genmake
3823      - added SGI options
3824    o verification/testscript
3825      - updated to that of checkpoint47a_post
3826    o verification/global_ocean.90x40x15/input/eedata
3827      - modified for SGI f77 compatibility
3828    o verification/lab_sea
3829      - added description of sea-ice model
3830      - added missing matlab routines
3831      - added test of thermodynamics parallelization
3832    
3833    checkpoint47a_post
3834    o new pkg: aim_v23
3835     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3836       for now, keep the same surface forcing as before.
3837     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3838     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3839     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3840    o add diagnostic of surface correction term in monitor output
3841    
3842    o bulk_force and therm_seaice
3843    - Two packages:  bulk_force (Bulk forcing)
3844      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3845    - Earlier integration from Stephaine Dutkiewicz
3846      and Patrick Heimbach.
3847    - Two ifdef statements for compile time,
3848       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3849    
3850    checkpoint47
3851    differentiable version of checkpoint46n_post
3852    o bug fix in quasihydrostaticterms
3853    o * "clean" adjoint code (in terms of extensive recomputations)
3854        can now be obtained for all GMREDI options (i.e. for
3855        - GM_VISBECK_VARIABLE_K
3856        - GM_NON_UNITY_DIAGONAL
3857        - GM_EXTRA_DIAGONAL
3858        - GM_BOLUS_ADVEC )
3859      * However, wrong gradient check problem remains unsolved.
3860      * New CPP options have been introduced for different
3861        tapering schemes
3862    o external_fields_load now part of differentiation list
3863    o pressure needs multiple storing;
3864      would be nice to have store_pressure at beginning or
3865      end of forward_step, e.g. by having phiHyd global (5-dim.)
3866      (NB: pressure is needed for certain cases in find_rho,
3867      which is also invoked through convective_adjustment).
3868    o recomputations in find_rho for cases
3869     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3870    o #define ATMOSPHERIC_LOADING should be differentiable
3871    o ini_forcing shifted to begining of initialise_varia
3872    o Incorporating QNVS line search routines into MITgcm
3873      (this is separate code, and therefore not under pkg)
3874      lsopt/, optim/
3875    o Updated verification/carbon/
3876      - #define GM_VISBECK_VARIABLE_K
3877      - GM_taper_scheme    = 'ldd97'    
3878    
3879    checkpoint46n_post
3880    Merging from release1_p8:
3881    o verification/natl_box:
3882      updating new external_fields_load routine
3883    o New package: pkg/seaice
3884      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3885      The sea-ice code is based on Hibler (1979-1980).
3886      Two sea-ice dynamic solvers, ADI and LSR, are included.
3887      In addition to computing prognostic sea-ice variables and diagnosing
3888      the forcing/external data fields that drive the ocean model,
3889      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3890      The implied surface heat flux is then stored in variable
3891      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3892      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3893      non-local transport term.  Because this call precedes model
3894      thermodynamics, temperature under sea-ice may not be "exactly" at
3895      the freezing point by the time theta is dumped or time-averaged.
3896      N.B.: fairly large differences in accuracy occur across
3897            different platforms/compilers; comparison between
3898            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3899            generated output gives:
3900       T           S           U           V
3901      C D M    c        m  s        m  s        m  s        m  s
3902      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3903      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3904      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3905    
3906      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3907    o GAD:
3908      - generated new common blocks to account for call of
3909        same gad routines with differing traceridentities
3910        (needed to modify tracerIdentity indices in GAD.h)
3911      - generated separate common blocks for case useCubedSphereExchange
3912        (Department of Futurology)
3913      - parameter lists to gmredi_?transport: added tracerIdentity
3914      - added new key indices to tamc.h
3915    o external_fields_load:
3916      - added this routine to TAF list
3917      - needed to make some common blocks global and additional storing
3918        along the same lines as exf package (checkpoint_lev?_directives.h)
3919    o exf:
3920      updated external forcing package
3921      - bug fixes carried over from ecco-branch
3922        (missing OBCS_OPTIONS.h in two routines)
3923      - enable easy to use "no forcing".
3924      - added exf I/O for atmospheric loading
3925      - added exf I/O for runoff data
3926      - transfered scaling between exf <-> MITgcm to exf namelist
3927    o Adding new verification experiment global_with_exf.
3928      This verification experiment is almost identical to the
3929      global_ocean.90x40x15 experiment, except that it uses
3930      the exf (and cal) package instead of the
3931      external_fields_load routine (cf README file).
3932    
3933    checkpoint46m_post
3934    o modified testscript to return -- when there are no lines of "%MON" output
3935    o added new flag "quasiHydrostatic" for QH mode
3936      and new routine quasihydrostaticterms()
3937    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3938      New routine: mom_u_coriolis_nh()
3939    o fixed sign of non-hydrostatic metric terms in u and v equations.
3940      Depend on correct sign of gravitySign.
3941    o added work.pc* to .cvsignore in aim directories using ifc
3942    o introduced flag for controllin non-hydrostatic metric terms
3943    o removed gravitySign from PARM04
3944    o switched to g77/ifc from pgf77 in aim experiments
3945    
3946    checkpoint46l_post
3947    o made convective adjustment work with pressure coordinates:
3948     - changed the direction of k-loop in convective_adjustment.F for the
3949       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3950     - adjusted the reference pressure k-index in convective_adjustment.F
3951     - adjusted the convection condition in convect.F (in analogy to
3952       calc_ivdc.F)
3953     - convective_adjustment no longer computes anything on the halos
3954     - removed the warnings about negative salinity from find_rho.F and
3955       find_alpha.F; instead the new routine look_for_neg_salinity, called
3956       at the beginning of find_rho, find_alpha, and find_beta, does a
3957       check of the entire slice, if CPP-option
3958       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3959    checkpoint46l_pre
3960    
3961    checkpoint46k_post
3962    o fixed the verification/global_ocean.90x40x15 experiment:
3963     - new bathymetry (the world according to A., JMC, and M.)
3964     - new initial fields and forcing fields (*.bin files)
3965     - new POLY3.COEFFS (for the next release one should switch to a full
3966       equation of state: JMD95P or MDJWF)
3967     - fixed several errors and redundancies in the data file
3968     - experiment uses looped cells
3969     - added matlab directory with diagnostic scripts for plotting of output
3970    
3971    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3972     - read AIM physics parameters from a file (data.aimphys)
3973     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3974    
3975    checkpoint46j_post
3976    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3977    o move wVel computation at the end of the time step, in S/R integr_continuity
3978    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3979    o update timeave pkg for wVel diagnostic.
3980    checkpoint46j_pre
3981    
3982    checkpoint46i_post
3983    o Clean up AIM package (and keep the results unchanged):
3984      include CPP_OPTION and use IMPLICT NONE in all routines ;
3985      declare all the variables _RL ; use _d 0 for all numerical constants.
3986      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3987    
3988    checkpoint46h_post
3989    o cleaned up the use of rhoNil and rhoConst.
3990      - rhoNil should only appear in the LINEAR equation of state, everywhere
3991        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3992        and the dynamical equations are all divided by rhoConst
3993    o introduced new parameter rhoConstFresh, a reference density of fresh
3994      water, to remove the fresh water flux's dependence on rhoNil. The default
3995      value is 999.8 kg/m^3
3996    o cleanup up external_forcing.F and external_forcing_surf.F
3997      - can now be used by both OCEANIC and OCEANICP
3998    checkpoint46h_pre
3999    
4000     Added code to convert surface volume flux (fresh water) into
4001     a mass flux when using P coordinates in the ocean (OCEANICP).
4002     Note: It assumes you have set rho0=rhoConst=density of fresh water.
4003    
4004    checkpoint46g_post
4005    o Include a new diagnostic variable phiHydLow for the ocean model
4006      - in z-coordinates, it is the bottom pressure anomaly
4007      - in p-coordinates, it is the sea surface elevation
4008      - in both cases, these variable have global drift, reflecting the mass
4009        drift in z-coordinates and the volume drift in p-coordinates
4010      - included time averaging for phiHydLow, be aware of the drift!
4011    o depth-dependent computation of Bo_surf for pressure coordinates
4012      in the ocean (buoyancyRelation='OCEANICP')
4013      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
4014        Theta, Salinity, and Pressure in the parameter list. This routine is
4015        presently contained in find_rho.F. This routine does not give the
4016        correct density for 'POLY3', which would be a z-dependent reference
4017        density.
4018    o cleaned up find_rho
4019      - removed obsolete 'eqn' from the parameter list.
4020    o added two new verification experiments: gop and goz
4021      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
4022    checkpoint46g_pre
4023    
4024    checkpoint46f_post
4025    o Enable tangent linear (forward mode) gradient checks:
4026      - extended active file handling to g_... files
4027      - added TANGENT_SIMULATION to theSimulationMode
4028      - extended grdchk package accordingly
4029    o added tangent linear setup in verification/carbon/code_ftl
4030    o added adjoint setup in verification/front_relax/code_ad
4031    
4032    checkpoint46e_post
4033    o Added new equation of state -> MDJWF
4034      - EOS of McDougall et al., 2002, JAOT, submitted
4035      - caveat: the equation of state is only valid for a smaller (more
4036        realistic?) range of values than JMD95P/Z and UNESCO
4037      - added masks to the calculation of pressure in store_pressure
4038      - added more check values for density in check_eos (ini_eos.F), some of
4039        the old check values are out of the range of the MDJWF-eos, so don't
4040        expect perfect matches for those
4041    checkpoint46e_pre
4042    
4043    checkpoint46d_post
4044    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
4045      'OCEANICP', also initialised field pressure correctly in ini_eos in the
4046      case of pressure coordinates. eosType='JMD95Z' in
4047      combination with buoyancyRelation='OCEANICP' now causes an error.
4048    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
4049      in find_alpha/beta.
4050    checkpoint46d_pre
4051    
4052    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
4053      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
4054    
4055    checkpoint46c_post
4056    o Changes necessary for ocean in p-coordinates
4057     -  Added new buoyancy relation = 'OCEANICP'
4058     -  Added new parameters = gravitySign (this used to be contained inside
4059        the factor dRdZ which I added when we first switched to R coordinates).
4060     X GM/Redi is not compatible (yet)
4061     X bottom drag and no-slip need to be debugged.
4062    checkpoint46c_pre
4063    
4064    checkpoint46b_post
4065    o Added new equation of state -> JMD95Z and JMD95P
4066      - EOS of Jackett and McDougall, 1995, JAOT
4067      - moved all EOS parameters into EOS.h
4068      - new routines ini_eos.F, store_pressure.F
4069    o Added UNESCO EOS, but not recommended because it requires
4070      in-situ temperature (see JMD95)
4071    o Modified formatting for knudsen2.f in utils/knudsen2 and added
4072      unesco.f to be used with POLY3
4073    checkpoint46b_pre
4074    
4075    checkpoint46a_post
4076    o Added (atmospheric) pressure loading
4077      - new field in FFIELDS.h, etc...
4078      - new cpp flag ATMOSPHERIC_LOADING
4079    o Changed hFacC to _hFacC in calc_phi_hyd.F
4080    o Added SHORTWAVE_HEATING to some files for consistency
4081    checkpoint46a_pre
4082    
4083    checkpoint46
4084    further merges from release1_p5
4085    o new ctrl package
4086      - adopted from ECCO environment to enable optimization
4087      - added Eliassen Palm fluxes to controls
4088    o added Eliassen Palm flux controls to gradient check package
4089    o cost package
4090      - Compatible with new ctrl package
4091      - added Eliassen Palm cost hooks
4092      - modif's of existing cost functions
4093    o Adjoint-related bug fixes in kpp:
4094      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
4095      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
4096    o autodiff package
4097      - flow directives:
4098        + new for S/R do_the_model_io
4099        + enhanced for S/R checkpoint
4100        + new gmredi.flow
4101      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
4102        disable adcommon.h/g_common.h by default.
4103      - fixed problem for adjoint of global_max
4104    o modified verification/carbon/
4105    o New setup for adjoint of global_ocean
4106    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
4107    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
4108    o incorporated hooks for sponge layer code (external_forcing.F)
4109    
4110    checkpoint45d_post
4111    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
4112    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
4113      (affects plume_on_slope "cg2d" output)
4114    o add new parameter deltaTfreesurf for free-surface time stepping
4115    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
4116    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
4117    o change phiMin in exp1 (to agree with documentation)
4118    o add new flags:
4119     - T,S forcing inside/outside Adams-Bashforth
4120     - turn off temp,salt advection and/or forcing
4121     - for each tracer, define internal flag for multiDimAdvection & A-B
4122    o monitor: change definition of KE to check conservation of Energy
4123    
4124    checkpoint45c_post
4125    o Removed f90 comments ("!")
4126    o Modified initialisations to enable exf package for MITgcm
4127      (without invoking ECCO_PACKAGE).
4128    o modifications to gradient check package (Martin Losch)
4129      - enable centered differences
4130      - modified format of standard output
4131    
4132    checkpoint45b_post
4133    o cleaned exchange calls in cg2d
4134    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
4135    o included CPP option SINGLE_LAYER_MODE in thermodynamics
4136      to configure barotropic setup (Martin Losch)
4137    o moved some initialisations within bi,bj loop in dynamics
4138      (TAF flow dependency)
4139    o in initialise_varia, moved call packages_init_variables
4140      before convective_adjustment_init
4141      (corresponding adjustment of TAF tape initialisation).
4142    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
4143    
4144    checkpoint45a_post
4145    o compute Rho over the whole domain (extend iMin,jMin indices)
4146    o specific exchange for X-slice domain (case Ny=1)
4147    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
4148    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
4149    
4150    checkpoint44h_post = checkpoint45
4151    o Fix to restore differentiability:
4152      place at which packages_init_variables is called in
4153      initialise_varia is crucial for reverse control flow.
4154    o modifications in GMRedi to enable stable adjoint
4155      (corresponding modif's in thermodynamics, dynamics)
4156    o added missing hook for sponge layer code in external_forcing
4157    o modified test cost functions
4158    o storing in gad_advection (plus removal of write(0,*)!
4159    o missing headers TR1.h added in convective_adjustment routines
4160    o errorMessageUnit set non-equal zero in eeboot
4161      (conflict on some platforms, e.g. IBM SP3)
4162    o modified carbon verif.
4163    
4164    checkpoint44h_pre
4165    o vertical grid option: allow to put the Interface at the middle between
4166      2 cell-centers ; replace delZ in pkg/kpp by drF.
4167    o GM Advective form: Tracers are advected using the residual transport (=
4168      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
4169    
4170  checkpoint44g_post  checkpoint44g_post
4171  o fix surface correction term in multiDimAdvection (affects plume_on_slope  o fix surface correction term in multiDimAdvection (affects plume_on_slope
4172    results) ; ifdef missing in thermodynamics.F    results) ; ifdef missing in thermodynamics.F

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