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revision 1.1 by cnh, Tue May 26 14:38:05 1998 UTC revision 1.1195 by jmc, Sun Nov 15 00:03:21 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    checkpoint61y
8    o pkg/seaice
9     - change (once again) the discretization for the evp solver: rather than
10       squaring the averages of strain rates, average the squares to give
11       a better approximation to VP behavior (in simple test); this breaks
12       verification experiments that use EVP (lab_sea and lab_sea.hb87)
13        --> update outputs
14    o add CPP-flag (in mom_calc_visc.F) and TAF directive (in gmredi_slope_limit)
15      to improve vectorization of adjoint code on TARGET_NEC_SX
16    o verification/vermix:
17      - change vermix to a more "classical" 1d column with high vertical
18        resolution, seasonal heat flux forcing and constant wind forcing
19        --> update outputs
20    o pkg/seaice
21     - fix diagnostics of principal stress components for EVP
22     - add optional diagnostics of non-linear convergence for LSOR solver
23     - make maximum zeta a runtime parameter
24    o model/src (3-d solver):
25      Undo modif from Dec 12, 2005 (solve_for_pressure.F cvs version v.49),
26       which consisted in removing the Surf. Non-Hydrostatic pressure from the
27       whole column and adding it to Eta (inspired from Casualli, 1999):
28       Only affects 3-D solver initial guess and only if using ExactConserv,
29       but tests did show a degradation of solver convergence. For this reason,
30       decide to disable this piece of code.
31       to recover previous version, just set zeroPsNH = exactConserv (line 78).
32      Update output of exp. global_ocean.cs32x15.viscA4 & hs94.cs-32x32x5.impIGW
33    o pkg/ggl90:
34     - fix previous modif (unfortunatly has not been documented here).
35    o pkg/seaice/autodiff:
36     - add CPP flag to include clipping of zeta in EVP code;
37       although clipping of zeta is not necessary for EVP and not recommended
38       it was done by default, now clipping is disabled by default
39     - modify computation and store zetaC/Z in seaice_evp for TAF
40     - add CPP-flag SEAICE_ALLOW_CLIPVELS (undefined by default)
41     - change seaice_calc_viscosities/strainrates for better
42       vectorization after AD by TAF
43     - rearrange common blocks in SEAICE.h once again for easier dumps of
44       adjoint output, adjust adcommon.h and g_common.h
45     - change flux form of default advection scheme for better vectorization
46       of adjoint code
47     - modify lab_sea/input.lsr to test the flux form of default advection
48       scheme
49    o autodiff: fix seaice fields in g_common.h (left over from 3 to 1 level
50      transition in checkpoint61r)
51    
52    checkpoint61x
53    o adjoint: adding two new verification experiments
54      * tutorial_global_biogeo: an online dic sensitivity experiment
55        (work with G. Forget)
56      * tutorial_dic_adjoffline: an offline dic sensitivity experiment
57        (an update of the Dutkiewicz et al., 2006 paper)
58      Both use the same CO2FLUX cost function, but different controls
59      Gradient checks look good, but some recomp. could still be traightened out
60      Should add xx_dic control variable to test at some point
61    o model/src:
62      add run-time parameters to check and/or mask initial Temp & Salt
63    o pkg/ptracers:
64      apply zonal filter (if used) to all passive tracers
65    
66    checkpoint61w
67    o adjoint:
68      * update and finish work on adjoint of dic package (G. Forget)
69      * start adjoint of offline package
70      * bug fix for cube-sphere TLM code (active_file_g.F)
71    o tutorial_global_oce_optim:
72      now tested with 4 tiles (change data.grdchk and update output_adm.txt)
73      and add SIZE.h_mpi for MPI testing
74    o pkg autodiff
75     - fix bug in autodiff_restore
76     - make genmake2 remove comments and empty lines from ad_input_code.f in
77       order to reduce file size (new script file remove_comments_sed)
78    o allows to specify vertical profile of vertical viscosity (viscArNr)
79    o pkg autodiff
80      autodiff_ini_model_io: comment out writing of grid information to netcdf
81      files, because at this time the grid fields are a bunch of zeros
82      (this is analogous to ini_mnc_vars.F)
83    o pkg seaice/autodiff:
84     left-over from removing the 3-time-level fields:
85     - small rearrangement of common blocks (SEAICE.h)
86     - fix field declaration in order to get meaningful output in
87       adseaice.*.nc (adcommon.h)
88    o pkg obcs:
89     - go through NH code only if nonHydrostatic=T
90     - fix restart for Orlanski (Hydrostatic; still to fix NH+Orlanski restart)
91     - move call to OBCS_CALC before SEAICE_MODEL which needs seaice-obc fields
92       => Update output of experiment seaice_obcs
93     - useOBCSbalance: code is wrong with multi-tile / proc: add a stop.
94     - fix NH+Orlanski restart (add wvel OBC value in pickup file)
95     - fix restart for useOBCSprescribe + useEXF
96    o pkg ctrl
97     - make obcs as control parameter work also with useSingleCPUio
98     - replace a few sny and snx by Ny and Nx to be consistent with
99       ctrl_set_globfld_x/yz.F
100    o pkg seaice
101     - re-introduce global field frWtrAtm for the case of
102       ALLOW_MEAN_SFLUX_COST_CONTRIBUTION defined (SEAICE.h, seaice_growth.F)
103     - catch the case of an empty filename in seaice_cost_init_fixed.F
104    o pkg ecco:
105     - small bug fixes in the_main_loop
106      . fix order of monitor arguments
107      . change SEAICE_MULTILEVEL to SEAICE_MULTICATEGORY
108      . move include DYNVARS.h up outside the ALLOW_AUTODIFF_TAMC block so
109        that ALLOW_ECCO_FORWARD_RUN works with NONLIN_FRSURF
110     - replace cos(yc*deg2rad) by _rA in cost_mean_heat/saltflux.F, fix the
111       imbalance diagnostics for wmean_h/sflux = 0
112     - add actual values to f_obcsn/s/w/e in ecco_cost_final.F
113     - catch the case of empty filenames in ecco_cost_init_fixed.F
114       and ecco_readparms.F
115     - fix the logic of wsalt=0.and.wsalt2=0 to wsalt=0.or.wsalt2=0 (and theta)
116       to make this statement meaningfull in ecco_cost_weights.F
117    o pkg zonal_filt:
118      - change ZONAL_FILTER S/R interface (allows to filter 2-D fields)
119      - when using rStar, filter uVel*hFacW instead of uVel
120       (tested without topography: fix a Pb of growing instability with NLFS)
121    o pkg/aim/thsice:
122     -Add capacity to read a Q-Flux to be applied in slab-mixed layer thsice_slab_ocean.F
123      (works as SST restoring)
124    o pkg/thsice:
125     -add specific parameter for salt restoring in slab mixed-layer
126       (by default equal to the temperature restoring)
127    
128    checkpoint61v
129    o pkg/kpp:
130     -add double diffusive contributions as a hack, turned off by default
131      for now, and the code can be excluded with a CPP-flag
132      EXCLUDE_KPP_DOUBLEDIFF just as EXCLUDE_KPP_SHEAR_MIX
133     -add a verification experiments to "vermix" to test this code
134    o pkg/mom_common:
135      Move computation of length scales to mom_init_fixed.F (avoid recomputation
136      at each time-steps*levels).
137    o pkg/layers:
138      Created a new package for computing volume fluxes in temperature or
139      [not yet implemented] density layers, e.g. for calculating residual
140      overturning circulations.
141    o pkg/diagnostics:
142      implement a RS type version for the set of DIAGNOSTICS-FILL subroutines
143    o fix few RS/RL type mismatch (check with ifort 11.1 "-warn all" option)
144    o pkg/mdsio (& pkg/rw): rework high level S/R interface:
145      To avoid mixing type (RS/RL) of input/output array argument,
146      replace single mixed-type array with a pair from each type (RS/RL).
147    o setting pickupSuff force to start from a pickup (even if nIter0=0): this
148      is now implemented for all pkgs (previously only done for the main pickup)
149    
150    checkpoint61u
151    o pkg/obcs:
152      - change OB?eta from _RS to _RL and put them into a separate commen block
153      - add code to read OB?eta from a file via obcs_prescribe_read: the code
154        compiles and does not destroy any other experiments, the data is read
155        properly, but the code is not tested in actual applications
156    o ini_mnc_vars.F: if available (ALLOW_CAL), use startTime_1 and 2 to
157      create a meaningful unit attribute for the time coordinate variable
158    o pkg/ebm: add plenty of missing "_d 0" ;
159       update results of experiment global_ocean_ebm (fwd + adjoint tests)
160      Notes: several pieces of code only works for (very) specific set up
161       (domain size, lat range, etc ...); should be documented & stop if one
162       of those assumptions is not meet.
163    o pkg/seaice: add missing "_d 0" in HSNOW initialisation
164       update results of experiments: lab_sea (3 fwd tests + 2 adjoint tests)
165          and offline_exf_seaice (seaicetd + adjoint).
166    o add missing "_d 0" in ShortWave flux penetration (S/R SWFRAC):
167       update results of experiments: lab_sea (4 fwd tests + 3 adjoint),
168        seaice_obcs, global_ocean.cs32x15 (icedyn & thsice) and natl_box (x2).
169    o few changes to pass when compiling with strick checking of arguments
170       across S/R (allow to find few bugs in S/R calls).
171    o pkg/seaice:
172     - seaice_evp: move if-statement out of loop (TEM) at the cost of 11 new
173       2d-fields, for slightly better performance
174    
175    checkpoint61t
176    o pkg/seaice:
177     - remove unused variables in seaice_evp
178     - reduce number of SQRT in seaice_evp and seaice_calc_viscosities
179    o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
180       named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
181       each processor opens a different file (a fix from Matt).
182    o cg2d:
183       use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
184       this reduces number of EXCH calls by 2 when using exch2.
185       For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
186       directives and missing simple EXCH (exch_s3d_rx) adjoint code.
187    o pkg/thsice:
188       add code for Near Infra-Red albedo (from Jeff)
189       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
190    o ini_model_io:
191       move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
192       MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
193       to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
194    
195    checkpoint61s
196    o pkg/exch2 (exch2_rxN_cube*):
197       remove last BARRIER (no need to synchronise after getting data from shared
198       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
199    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
200      and generate new output (for the 2 tests) using default rotationPeriod.
201    o pkg/exch2:
202      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
203        (was already the case with AUTODIFF_EXCH2 defined)
204      - add bj in exch2 arrays and S/R.
205      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
206        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
207    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
208      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
209        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
210      - verification experiment natl_box.longstep
211    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
212      allow different versions of ifort (8 or 9) and different versions
213       of mpi (mpich or mpich2) to be used with the same optfile.
214      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
215       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
216    o pkg/seaice:
217      fix previous modif (3-level field removed) for old-pickup reading
218    
219    checkpoint61r
220    o pkg/seaice:
221     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
222      1. introduce fields for time step (N-1)
223      2. do not use levels 2 and 3 anymore (but keep them)
224      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
225         includes changes to pkg/thsice/thsice_get_velocity.F,
226         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
227         pkg/obcs/obcs_apply_uvice.F.
228     - completely remove code for leap-frog time stepping for second order
229       advection
230     - adjusted adjoint accordingly;
231       gradient checks have improved by an order of magnitude!
232    
233    checkpoint61q
234    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
235     - the boundary conditions along open boundaries are unclear, because the
236       associated masks are set to zero and are thus treated as closed when
237       applying the slip-boundary conditions.
238     - move initialisation of grid variables from seaice_init_varia to _fixed
239    o adding doc/diags_changes.txt
240    o model/src:
241      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
242       to avoid "_diags" naming if no relation to pkg/diagnostics.
243      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
244       file and only call PLOT_FIELD_XYZ if debugMode=T.
245      remove few PLOT_FIELD_XY calls outside initialisation.
246      remove few unnecessary BARRIER.
247    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
248      of salt_plume package in Southern Ocean
249    o pkg/thsice:
250     - fix hOceMxL in overlap (needed for sea-ice advection);
251       update output of experiment global_ocean.cs32x15.icedyn.
252    o pkg/seaice:
253     - make the (placeholder-)tracer IceAge a little more meaningful
254      by avoiding ridging of age due to convergent ice flow
255     - add diagnostics for surface temperature, atmospheric and oceanic
256       heat flux, and atmospheric and oceanic ice growth
257    
258    checkpoint61p
259    o eesupp (global_max & global_sum):
260     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
261     - remove starting & endding barrier (no longer needed)
262    o pkg/mdsio, writelocal:
263       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
264       (remove the STOP): uses shared buffer IO to store data from all threads
265       and then let master-thread write nThreads tiles.
266    o pkg/mdsio (read/write field):
267     - tiled IO done in 1 piece (all levels at a time);
268     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
269     - multi-threaded: allow to read/write local (non-shared) array
270       (was already working with singleCpuIO ; now works also without);
271       => no longer needs barrier call after reading a file (added inside
272       mds_read/write field).
273     - move barrier calls outside gather/scatter_2d to mds_read/write_field
274    o pkg/obcs/exf
275      - exf_getffieldrec.F: add a few ". _d 0" and
276                            add code to catch the case fldperiod = 0.  
277      - obcs_precribe_read.F: change if statements so that they match
278                              the variable type (_RL)
279      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
280        exf_iprec) as part of namelist EXF_NML_01
281    o pkg/mdsio:
282      - read/write tiled (local) files: read/write 1-level tile chunk at a time
283        (instead of segment of length sNx); expected to speed up tiled IO.
284    o pkg/exch2:
285      - take buffer copy from/to array out of S/R exch2_send/recv into new
286        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
287        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
288      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
289      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
290        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
291        including Topology header file (and common blocks).
292      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
293        remove 2nd exch call in exch2_s3d_rx (no longer needed).
294      - document S/R arg. list (+ update some comments)
295    o pkg/seaice:
296      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
297        temperature and humidity over sea ice based on climatological values.
298      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
299        of LSR (this change is expected to change the results slightly because now
300        it uses slightly difference moduli from the second last LSR solution, but
301        that is more consistent with the stress computations; this part of the code
302        is not tested in the verification experiments)
303      - fix diagnostics for flux of ice in case of B-grid
304      - turn strain rates eij and press into global fields within global
305        common block in SEAICE.h for more straighforward diagnostics
306      - fix diagnostics for principal stress components, press, zeta, eta
307        to give something meaning full
308    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
309      new output (all 4 tests) using default rotationPeriod.
310    o pkg KPP:
311      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
312      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
313        and normal grid from 1 to Nr)
314    o Fix computations of L4rdt in mom_calc_visc.F
315    o eesupp:
316      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
317      should be called before a "stop" if we know that all process are going
318      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
319    
320    checkpoint61o
321    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
322    o model/src/ini_curvilinear_grid.F:
323       compute angleSin/CosC when they are not read from a file
324    o pkg/seaice:
325       add pseudo time stepping for LSOR
326    o pkg/exch2:
327       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
328    o pkg/seaice:
329       Adding separate sea ice albedo, drag coefficients, and HO in Southern
330       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
331    o SingleCpuIO:
332       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
333    o pkg/seaice:
334       put exchanged variable in (local) common block for MPI+Multi-Threads
335       to work (necessary with exch1, and for now with exch2 too).
336    o verification: to get more experiments tested with mpi, mth and mpi+mth,
337      change tiling of:
338       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
339       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
340      update output of exp:
341       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
342       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
343      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
344                       (note: output.txt generated on faulks using only 1 tile)
345    o eesupp & mdsio (SingleCpuIO):
346     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
347       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
348       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
349     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
350     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
351       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
352    o pkg/exch2:
353     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
354       read parameter file "data.exch2" if it exists; otherwise try default regular
355       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
356     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
357       with new code (not to be used, just as a backup solution).
358     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
359       in utils/exch2/input.
360    
361    checkpoint61n
362    o eesupp & mdsio (SingleCpuIO):
363      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
364        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
365        receive real*4 array (instead of real*8) to read/write 32.bit files.
366        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
367         and remove new mapping S/R)
368    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
369      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
370        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
371        when using exch2. Add S/R to map global io-buffer to global model array.
372      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
373    
374    checkpoint61m
375    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
376      and add 3 other S/R for other types (R4,R8,RS).
377      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
378    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
379     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
380     - reduce number of macro definitions (keep only those which are used);
381       can always call directly the corrresponding S/R if needed.
382     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
383       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
384     Fixed wrong type of arg in:
385       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
386       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
387     To fix: global_sum of var in common block is wrong (multi-threaded) in:
388       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
389     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
390    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
391      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
392    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
393    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
394      edges are closed (zero depth); might happen with "blank tiles";
395      for now, disabled if using OBCS.
396    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
397      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
398    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
399      to reduce length of 1.D array print in STDOUT.
400    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
401      + use 48 tiles (16x8): this will allow to test "blank tiles".
402    o start to test MPI + multi-threaded (change testreport to skip tests
403      where number of tiles do not match).
404    o genmake2: add option "-omp" to turn on Open-MP ;
405      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
406    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
407      and keep the original tile numbering. Note: compatible with old
408      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
409    
410    checkpoint61l
411    o Overlaps had been forgotten in calculating ijk keys : fixed
412    o fix cyrus makedepend for gcc 4.4
413    o experiment fizhi-cs-aqualev20:
414      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
415      and generate new output. Note: new output is much closer to the old
416      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
417      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
418    o pkg/fizhi:
419     - change to avoid indices going deliberately over array-bounds
420     - remove unnecessary MPI stuff
421     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
422     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
423       does not go over array-bounds and therefore returns reliable output.
424     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
425       this S/R has 4 output arguments, which are used inside "get_alarm";
426       when it is called with the same variable "ndum" in place of several
427       output arguments, this produces weird side effect inside "get_alarm"
428      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
429       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
430       address) and produces error.
431    o tools/gemake2: (March 27-29 2009)
432      with option "-mpi": link *_mpi files from "MODS" dir (this is what
433      testreport does).
434    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
435    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
436       update lab_sea.lsr & lab_sea.salt_plume results
437    o pkg/seaice:
438      Major overhaul of the LSOR solver: change discretization from original
439      finite differences to finite volume. The old routine is still in the
440      file seaice_lsr.F and can be turned on with the CPP-flag
441      SEAICE_OLD_AND_BAD_DISCRETIZATION
442      Along with this change, the discretization of the strain rates is changed.
443      The same flag turns on the old discretization in seaice_calc_strainrates.F
444      All verification experiments with seaice are affected (except for
445      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
446      results by setting the above flag.
447      Further changes involve changes in defaults:
448      - ALLOW_FLOODING is defined and turned on by default
449      - SEAICEadvSnow = .true. is now the default
450      - SEAICEadvSalt = .true. is now the default
451      - SEAICEadvAge  = .true. is now the default
452      - SEAICE_clipVelocities  = .false. is now the default
453                                         (as per J. Zhang's recommendation)
454      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
455        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
456      - seaice_growth: replace computation of UG by a simple copy from wspeed
457    
458    checkpoint61k
459    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
460      seaice_lsr: fixed a few metric terms,
461                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
462                  add more debugging diagnostics
463      seaice_evp: removed superfluous many metric terms of FV discretization
464                  of stress divergence
465                  affects lab_sea, lab_sea.hb87
466      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
467                  of stress divergence for non-evp solver
468                  (this part is not tested anywhere)
469      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
470                  they were effectively only half slip
471                  affects lab_sea.hb87
472      updated all relevant verification experiments (except lab_sea//output_adm.txt
473        which was left over, but fails at level 7 & 6)
474    
475    checkpoint61j
476    o pkg/seaice: turn a few hard wired parameters into run time parameters
477    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
478      time in seconds as promised by the usints in seaice_monitor and exf_monitor
479    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
480      that are not cubed-sphere grids
481    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
482    o pkg/ctrl:
483      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
484    o non-hydrostatic (calc_gw.F):
485      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
486      update output of exp. global_ocean.cs32x15.viscA4
487    o remove backward compatibility for thetaMin,phiMin
488      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
489    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
490      interpolated wind field not only for curvilineargrid=.true., but also
491      for a rotated grid (rotateGrid=.true.)
492    o pkg/exf: add capability to bypass interpolation for runoff
493      by setting yet another CPP-flag
494    o eesupp/src, B-grid exchange:
495      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
496    o autodiff
497      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
498      allows to switch to single-prec common blocks;
499      corresponding switch occurs in tamc.h, integer isbyte
500      TAF store directivs "byte" and "kind" seem equivalent;
501      Most tamc.h have been updated correspondingly.
502    
503    checkpoint61i
504    o autodiff:
505      fix autodiff_sore/_restore indices for obcs
506      (spotted by I. Hoteit, M. Mazloff)
507    o pkg/autodiff, pkg/ctrl:
508      Add flag to reduce all tapelev I/O to single-prec.
509      In data.ctrl set
510        doSinglePrecTapelev = .TRUE.
511    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
512      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
513    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
514      real fresh water flux (not yet)
515    o pkg/mdsio & rw:
516     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
517     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
518    o pkg/flt:
519     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
520       init_fixed & ini_varia.
521     - clean-up & simplify linear interpolation S/R:
522       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
523     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
524     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
525     - add vert. coordinate & horiz. indices to output files.
526     - change vertical position in initial condition, from index to depth [m].
527     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
528       (easier to get to a curvilinear grid) ; delX,delY no longer used.
529    o pkg/ggl90: a few modifications:
530     - fix bottom boundary condition, and interpolation of KappaE
531       near top and bottom
532     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
533     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
534     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
535    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
536      (maintain temporary backward compatibility, until next checkpoint)
537    
538    checkpoint61h
539    o pkg/diagnostics with "periodic averaging diagnostics":
540      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
541    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
542    o pkg/obcs: fix loop ranges for balancing code
543    o pkg/flt:
544     - improve criteria for finding which tile owns a float.
545     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
546    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
547      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
548      with ocean biogeo)
549    o pkg/flt:
550     - do some cleaning and fix the restart ;
551     - add output.txt in flt_example/results to get this pkg tested.
552    o genmake2: add an EXTENDED_SRC option and flag.
553       for now, cannot be turned on on command line (only through genmake_local)
554    o pkg/mdsio: read/write vector:
555     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
556     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
557       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
558     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
559      (drop to 4 digits matching for grad). But this test does not look very
560      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
561    
562    checkpoint61g
563    o pkg/flt:
564      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
565       + make OPTIONS file more standard.
566      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
567      - fix _BYTESWAPIO CPP-Flag
568      - standard reading of file-parameter "data.flt"
569      - fix argument list of S/R FLT_RESTART
570      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
571    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
572    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
573      a still unfixed compiler/optimization bug
574    
575    checkpoint61f
576    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
577      update results of global_ocean.cs32x15.icedyn test.
578    o move getcon.F from model/src to pkg/fizhi.
579    o pkg/exf: add parameter for extrapolation of temp up to the surface
580       and option to prevent negative evap (in bulk_largeyeager04 only).
581    o Prather Advection scheme: fix tracer conservation for divergent flow
582      (e.g., when using NonLin Free-Surface).
583    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
584    o gmredi (Visbeck-variable-K):
585     - add more parameters to Visbeck-variable-K.
586     - use a 5 points average for dSigmaR in Visbeck-K calculation
587       (more "homogenous": same stencil and same weights as in dSigmaH)
588     - update output of ideal_2D_oce experiment.
589    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
590      (#undef REAL4_IS_SLOW)
591     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
592       coordinate variable
593     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
594       (surface forcing fields), removes some of the functionality
595     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
596     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
597       probably not all: copy _RS surface flux fields to RL field before
598       calling DIAGNOSTICS_FILL
599     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
600       real*4 (CALL EXCH_*_RS) versions.
601     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
602       (generate new output).
603    
604    checkpoint61e
605    o gmredi (Visbeck-variable-K):
606      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
607      - change computation of Visbeck-K where Slope > Smax :        
608        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
609        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
610    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
611      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
612    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
613    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
614      does not become too large (to avoid precision problems in implicit-diffusion
615      solver); update ideal_2D_oce output.
616    o pkg ggl90:
617      - in ggl90_cal.F: compute only one set of visc/diff, used to
618        step forward TKE/T/S/momentum
619      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
620        have Prandlt =1)
621    o gmredi (fm07):
622      - add lower limit on Transition layer thickness + lower limit on 1/lambda
623      - allow to set few more params from data.gmredi
624    o pkg ggl90:
625          - add missing sqrt(2) factor in computation of mixing length
626            scale in ggl90_calc.F
627            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
628    
629    checkpoint61d
630    o adjoint modifs
631      - adapt to new field rhoInSitu
632      - allow to revert from StoreDynVars2D, StoreDynVars3D
633        to individual fields
634        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
635    o store 3-D (in-situ) density in commom block (DYNVARS.h)
636     - save 1 rho computation.
637     - no longer modify T & S inland when using down_slope pkg.
638    o gad_som : allow to switch to SOM advection for T & S without corresponding
639      pickup files (using new S/R: MDS_CHECK4FILE).
640    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
641      (for useSingleCpuIO to work in multi-threaded)
642    o pkg/shelfice:
643     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
644       with SHELFICEtopoFile in data.shelfice
645     - move code for reading ice shelf topography and modifying hFacC into separate
646       subroutines of the shelfice package
647     - separate initialisation of "fixed" and "variable" variables
648     - kTopC is not (yet) replaced by kSurfC, although this is possible
649    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
650    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
651      and rename:
652      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
653      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
654    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
655    
656    checkpoint61c
657    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
658      to add mass source/sink of fluid in the interior (3-D generalisation
659      of oceanic real-fresh water flux).
660    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
661    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
662    o new pkg: down_slope
663      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
664      - presently, modify T & S inland (dwnslp_calc_rho.F).
665        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
666      - implementation for ocean in P-coords not tested.
667      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
668    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
669      (to facilitate conversion of oceanic pkg to p-coordinate).
670    o change FIND_RHO to FIND_RHO_2D :
671      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
672    o new pkg: cheapaml
673    
674    checkpoint61b
675    o exch2:
676      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
677      - no longer depend on the order sequence (N,S,E,W).
678      - 3rd exchange no longer needed (tested with 24 tiles).
679      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
680      - exch_UV_A-grid readily available (but not yet tested).
681      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
682      (both are no longer needed) in exch_uv: no effect in forward run; but
683       get truncation error differences with adjoint exch.
684    o exch2:
685     - change index-bounds storage (moved from target to local tile,
686       more intuitive this way) ; rename/remove some variables.
687     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
688    
689    checkpoint61a
690    o exch2/matlab-topology-generator:
691      fix bug in index bounds for N-S internal exchange (hard to tell if this
692      had any effect on the solution).
693    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
694      is exceeded
695    o testreport: modify syntax of awk, so that it works also with
696      awk, and not only with nawk and gawk
697    
698    checkpoint61
699    o autodiff
700      Change default for TAF usage by removing argument '-nonew_arg'
701      This changes TAF subroutine argument list (ordering of active var.)
702      Omission of this flag leads to incompatibility w.r.t. TAMC
703      To restore TAMC-compatibility, need following modifs:
704      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
705      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
706      Tested TAF version is 1.9.22
707      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
708    
709    checkpoint60
710    --->>> This is the last checkpoint for which generating the adjoint
711    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
712    --->>> by default.
713    --->>> Future checkpoints will ommit this flag by default.
714    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
715    o pkg/grdchk: Add gradient check to etan0 perturbations.
716    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
717    o pkg/autodiff: more flexibility in zeroadj.
718      model/src: modifying do_oceanic_phys.F accordingly.
719    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
720    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
721      special setup of gmredi for which the adjoint is stable
722      enough for parameter optimization.
723    o bridging the gap between eddy stress and GM.
724      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
725          along with a change in CPP option (now ALLOW_EDDYPSI).
726      -> when using GM w/ GM_AdvForm:
727          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
728          is applied either in the tracer Eq. or in momentum Eq.
729          depending on data.gmredi (intro. GM_InMomAsStress).
730      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
731      The key modifications are in model/src/taueddy_external_forcing.F
732      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
733    
734    checkpoint59r
735    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
736      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
737      fix option to read coriolis(@ cell-corner) from files with CS-grid.
738    o pkg/mnc: add some attributes to standard 1D-coordinate variables
739    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
740      mass points, when using mnc for output
741      - add runtime parameter (missing_value, missing_value_int) to override
742        default (which is the value of getcon('UNDEF'))
743    o pkg/mnc: prepare mnc for the actual use of missing values with the
744      diagnostics package: small fix in mnc_cw_readwrite.template and more
745      initialisation of never used fields
746      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
747      versions
748    o pkg/thsice/thsice_ini_vars.F added default initial values so that
749      thermodynamics sea ice solver does not blow up when some initial fields
750      are missing.
751    o move from external_forcing_surf.F to ini_forcing.F
752      the p-coord. hack consisting in using pLoad to set phi0surf ;
753      update output of tutorial_global_oce_in_p (affected @ truncation level).
754    o Freshen up a bit hs94.1x64x5, notably:
755      remove rotationPeriod and tRef=5*0. (adjoint only), and add
756      exactConserv=.TRUE.
757    o pkg/generic_advdiff:
758      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
759      applies to files where Temperature & Salinity 2nd Order moments are used.
760    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
761      this uses a dynamically allocated internal state data structure
762      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
763      and requires a fortran 90 compiler
764    
765    checkpoint59q
766    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
767       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
768    o Refresh tutorial_global_oce_biogeo, notably:
769      - change bathymetry (put back seamounts in ACC, use hFacs)
770      - change EOS (POLY3 --> JMD95Z)
771      - use Bryan-Lewis vertical diffusivity
772      - use multidimensional advection
773      - remove old virtual virtual in dic pkg, now done through ptracer pkg
774      - change a couple of parameters in dic pkg
775    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
776    o pkg/obcs: change default to OBCSfixTopo = .true.,
777      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
778      - replace "debugMode" with "debugLevel .GE. debLevB"
779    o implementation of TAF directives for gchem,cfc,dic
780    o remove "exp5" (replaced by tutorial_deep_convection).
781    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
782      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
783      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
784      --> changes results in exp4, seaice_obcs
785    o tutorial_deep_convection :
786      update the set-up and increase resolution and domain size ; start
787      from pseudo initial conditions = output at t=120mn in order to see
788      something happening when running testreport.
789    o pkg/seaice: add os7mp as an advection scheme
790                  add check for advection schemes
791                  add a flag for restoring T and S underneath sea ice
792    o pkg/my82: add netcdf-support and diagnostics
793    o thsice pkg:
794      - Now hsMax limits snow height by turning it into ice following
795        flooding scheme (and now conserving energy)
796      - Slight rewriting of the formula in thsice_calc_thick.F
797      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
798      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
799    
800    checkpoint59p
801    o gchem / dic / cfc :
802      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
803      - add new parameter files: "data.dic" & "data.cfc" ;
804      - various re-arrangement in initialisation & header file ;
805      - fix tutorial_global_oce_biogeo for multi-threaded test.
806    o pkg/dic: test for "pickup_dic" file when restarting ;
807      if no pickup-file, can restart with a re-initialised pH (same as it did
808      before) providing pickupStrictlyMatch is set to False.
809    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
810      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
811    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
812      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
813    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
814     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
815       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
816    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
817       scheme to use for vorticty-term ;
818     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
819       (with default selectVortScheme, return to original discretisation)
820     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
821    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
822    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
823      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
824      also fix diagnostics VISCAHW & VISCA4W.
825    
826    checkpoint59o
827    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
828    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
829      move a few statemens out the main loop into separate loops
830    o pkg/shelfice:
831      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
832        (kg/m^2/s), does not break tests, because in verification/isomip,
833        rhoConstFresh=rhoConst (by accident)
834      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
835      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
836        new file model/src/seawater.F, so that they are available for all pkgs.
837      - convert potential temperature into in-situ temperature. This changes the
838        isomip tests => update tests
839    o add a flag writePickupAtEnd (default=true) to be able to suppress
840      writing a pickup at the last timestep
841    o tools/mpack-1.6 :
842      - disable automake (not working) and autoconf (not needed).
843      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
844        also cleaner with much less compilation warnings.
845    o pkg/profiles:
846      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
847      (for "less than 32 characters name" compiler requirement)
848    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
849      conditions that have a different sampling frequency than S/T/U/V obcs
850    o pkg/diagnostics (stats-diags):
851      - fix global Min/Max in case 1 processor get only empty tiles
852    o genmake2: replace (4 times)
853         make genmake_tc_1.o >> genmake_warnings 2>&1
854      with
855         COMM="$CC $CFLAGS -c genmake_tc_1.c"
856         echo $COMM >> genmake_warnings
857         $COMM >> genmake_warnings 2>&1
858      to make genmake2 always see the value of CC as specified in the optfile.
859    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
860      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
861      - modify verification advect_cs test to test SOM-advection on CS-grid.
862    o pkg/ctrl:
863      - Rewrite of ctrl_map_ini_ecco.F,
864        introducing a generic routine (ctrl_map_ini_gen.F).
865      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
866    
867    checkpoint59n
868    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
869      number in dedicate array "hdiag":
870      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
871        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
872      - many small changes (integer format) for large number of diagnostics
873      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
874        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
875    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
876      usingSphericalGrid, this allows to define the rotated grid coordinates
877      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
878      geographical coordinates according to the inverse of the rotation defined
879      by the Euler angles, so that Coriolis parameter and online-interpolation by
880      exf works with the geographical coordinates on XC/YC/XG/YG.
881      Naturally, this feature does not work with all packages, so some
882      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
883      profiles), because there the coordinates are assumed to be regular
884      spherical grid coordinates.
885    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
886      - introduce isopycnal diffusion coefficient control.
887    o tools/adjoint_options:
888      - additional control vector components.
889    o pkg/mnc: have mnc create marginally meaning full coordinate variables
890      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
891    o pkg/mypackage:
892      - add example of read/write pickup for state-var ;
893      - add entry points to the main code for state-vars diags & write-pickup.
894    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
895      transitions for useExfYearlyFields
896      - add new subroutine that determines the file to read from for
897        use*YearlyFields = .TRUE. and .FALSE.
898      - add a verification experiment to global_with_exf that tests
899        useExfYearlyFields with USE_EXF_INTERPOLATION defined
900    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
901      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
902      subroutines (which could be generated from a template, because they are
903      almost identical), for now they are included in obcs_prescribe_read.F for
904      simplicity
905    o pkg/exf:
906      - add a little more diagnostic to exf_interp_read (in analogy to
907        mds_read_field, can be turned off with debugLevel < debugLevA=1)
908      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
909        ugly but fast by unrolling short inner loops, inserting a unroll=8
910        directive in routine lagran, and splitting a loop and making do while the
911        outermost loop (the latter requires the intoduction of index arrays)
912    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
913    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
914      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
915    o verification/seaice_obcs: updated for restart test and latest options
916    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
917      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
918      for now this is only available for the C-grid code and also within
919      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
920    
921    checkpoint59m
922    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
923      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
924    o gad_som : fix flux output (& diagnostics) to have same units as other  
925      advection scheme fluxes (was previously multiplied by deltaT).  
926    o added verification/seaice_obcs both to test seaice open boundaries
927      and to provide an example matlab scrpt for generating them
928    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
929    o pkg/salt_plume: clean up salt_plume_frac.F to
930      remove redundancy in PlumeMethod 1 and 4
931    o pkg/kpp: added saltplume diagnostics
932    o pkg/obcs and pkg/seaice:
933      - do not set uice and vice to zero when OB*icefile are unspecified
934      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
935      - moved seaice tracer obcs after call to seaice_growth
936    o pkg/salt_plume: added various options for salt plume depth
937      criterion and for vertical distribution of the salt
938    
939    checkpoint59l
940    o pkg/ptracers: new version of ptracers pickup:
941      read meta file and write only fields which are needed to restart.
942      ( same logic as main pickup file ; also using pickupStrictlyMatch )
943    o pkg/seaice:
944      - add timescale for melting due to warm mixed layer as a means of
945        setting SEAICE_availHeatFrac more conveniently
946      - add a CPP-flag/runtime parameter check for flooding algorithm
947      - reformulated availHeat in seaice_growth.F to be independent of AREA
948    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
949      unit changes
950    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
951    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
952      SX vector computer.
953    o pkg/seaice:
954      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
955        seaice forcing fields can now be read only through pkg/exf
956      - removed some unused halos
957    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
958    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
959      or U/VICE from U/VWIND before computing U/VSTRESS
960    
961    checkpoint59k
962    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
963      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
964    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
965      all experiments pass when compile with un-initialised var. checking option.
966    o added pkg/salt_plume
967    o script to test restart (for now, in MITgcm_contrib/jmc_script)
968    o pkg/seaice: new read/write pickup version.
969      read meta file and write only fields which are needed to restart.
970      ( same logic as main pickup file ; also using pickupStrictlyMatch )
971    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
972    o lab_sea.hb87: modify the domain & update output.hb87.txt :
973      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
974      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
975      process. Fixed here by closing the domain at the Northern boundary.
976    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
977    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
978      a set of consecutive levels in/from a 3-D array.
979    o pkg/ptracers:
980      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
981      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
982    
983    checkpoint59j
984    o in pkgs: dic, obcs, offline, rbcs:
985      standard way to compute coeff. for time interpolation between 2 time reccords
986      which retains full precision (& make results less dependent on compiler).
987      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
988    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
989      packages instead of reading ice cover and wind speed separately
990    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
991     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
992      to allow to compile customized code before the update)
993    o cleaning-up:
994      - fix CPP instruction syntax in pkg/obcs
995      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
996        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
997      - fix some threads issue in IO parts.
998    o pkg/dic:
999      - add tons of "_d 0" (--> much better testreports !)
1000       and then update outputs of tutorial_global_oce_biogeo
1001    o pkg/mom_fluxform:
1002      add a special version of momentum advection intended to conserve momentum
1003      next to a bathymetry step or a coastline edge. (default = off = #undef)
1004    o new read/write pickup version:
1005      - for now, only implemented for main (mdsio) pickup file.
1006      - write out only what is needed to restart; merge pickup_nh , pickup_ph
1007        and main pickup together.
1008      - read meta file; read only what is needed to restart; stop if a field
1009        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
1010        if it make sense (even if the restart is not perfect).
1011      - if no meta file, assume that pickup to read corresponds exactly to
1012        a pickup that would currently be written.
1013      - read pickup written in the old format (until checkpoint59i) if it
1014        recognizes an old meta file (no field-list).
1015      - add a meta file in exp. which starts from a pickup: 2 cases:
1016        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
1017         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
1018        b) a meta file describing the content of the associated pickup file
1019         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
1020    o pkg/mdsio & pkg/rw:
1021      - new routine to read a meta file ; new set of routine to read
1022        Multiple-fields file (with meta file).
1023    o added open boundary conditions capability for seaice
1024        HSNOW, HSALT, UICE, and VICE
1025    
1026    checkpoint59i
1027    o adjoint:
1028      * fix multiDimAdvection adjoint
1029        (partial recomputation problem by TAF for fVerT(:,:,kDown)
1030        and comlev1 size definition (maxpass vs. max. number of tracers)
1031      * verification/global_ocean.90x45x15 adjoint now tests
1032        NLFS and multiDimAdvection using DST3 (=30)
1033      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
1034    o pkg/kpp: add "_d 0" to real constant (if missing);
1035      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
1036      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
1037    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
1038      for internal parameters related to restart process (formerly from PARAMS.h)
1039      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
1040    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
1041      as argument. (only atm2d & obcs write_pickup have not yet been updated)
1042    o pkg/monitor:
1043      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
1044      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
1045      - account for deep Atmosphere factor and density factor (anelastic)
1046    o added open boundary conditions capability for seaice HEFF and AREA
1047    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
1048      thermodynamics
1049      - requires a little reorganization, which affects the testreport results
1050        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
1051        so that now the conservative form is tested
1052      - add a few comments
1053    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
1054    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
1055    o add new diagnostics to seaice: advective, diffusive fluxes (only for
1056      multidim-advection, for scheme 2 they are not filled) and transports,
1057      thermodynamic growth rates
1058    o change units of EmPmR (inside the code, + within coupling interface)
1059      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
1060      Affects results @ truncation level (cg2d match) and update output of
1061       experiments: lab_sea(6), global_ocean.90x40x15(10),
1062      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
1063      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
1064      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
1065      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
1066    
1067    checkpoint59h
1068    o pkg/exf:
1069      - improve vectorization by moving if-statement out of loops in
1070        exf_mapfields, exf_radiation
1071      - exf_bulkformulae.F: introduce 2D fields and vectorize code
1072    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
1073    o testreport:
1074      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
1075        monitor & update offline_exf_seaice exp. output.
1076      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
1077    o pkg/seaice:
1078      - bug fix in the evp solver: boundary conditions were affected be
1079        masking of zMax/zMin (changes results)
1080      - minor bug fix in boundary conditions in seaice_calc_strainrates
1081        (changes results for no_slip)
1082      - seaice_lsr.F: make interpolation of eta dependent on boundaries
1083      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
1084      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
1085        stress formulation and no-slip boundary conditions
1086    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
1087      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
1088    o pkg/seaice: a first HSALT time stepping equation has been checked in
1089    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
1090      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
1091      without requiring DO-IF statements
1092    o pkg/thsice:
1093      use continuous power-law function for partition of energy between lateral
1094      melting/freezing and thinning/thickening ; old code using step function
1095      still available with #undef THSICE_FRACEN_POWERLAW
1096      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
1097    o testreport: change AD testing : check against results/output_adm.txt
1098      using same scripts as for forward test.
1099    
1100    checkpoint59g
1101    o adjoint testing: in preparation for changing testreport:
1102      - output format: cost and grad written on separated lines
1103      - ad output results in directory "results" (instead of "results_ad")
1104    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
1105    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
1106    o pkg/ecco: allow user defined cost function contributions
1107    o testreport:
1108      Allow to choose (per experiment) the list of tested output variables
1109       and the main variable (used to issue a pass/FAIL ) ;
1110      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
1111      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
1112      Also modify printing of summary:
1113       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
1114       b) echo the list of tested variables in the individual summary.txt of
1115          each experiment.
1116    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
1117      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
1118      (but still depend on the tile decompostion of the domain).
1119    o pkg/seaice: change a discretization detail to make the B-grid code
1120      "more symmetric". This change is likely to remove all "ridges/leads" that
1121      where quasi-aligned with the grid in B-grid solutions. It may also be
1122      the solution to the stress coupling issues with the B-grid.
1123    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
1124      remove .cvsignore from input dir. (since testreport no longer run here).
1125    o pkg/thsice:
1126     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
1127     - fix reshaping of sea-ice just after advection:
1128       melt all the ice only if ice-volume is too small.
1129     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
1130       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
1131     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
1132    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
1133      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
1134    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
1135      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
1136      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
1137      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
1138      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
1139      -> update output.txt
1140    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
1141     this affects truncation error: -> update output.txt of exp:
1142      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
1143      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
1144    
1145    checkpoint59f
1146    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
1147    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
1148      a bounded range (in forward mode)
1149    o pkg/ecco, ctrl, autodiff and mom_common:
1150     internal parameter controls, completements of implementations
1151    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
1152    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
1153      (not seem any difference in testing results).
1154    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
1155       at face corners.
1156    o pkg/generic_advdiff:
1157     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
1158      loop range indices for computing vertical advection tendency
1159      and do the calculation in the interior only (no overlap) ;
1160      for now, only implemented for SOM advection (to save CPU time).
1161     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
1162    o exch2 adjoint
1163      First set of changes:
1164      - add exch2 hand-written adjoint templates
1165      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
1166        This will require cleanup in pkg/autodiff/*.F
1167        (changed routines currently kept separate in verif. code/)
1168      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
1169        that used to hide exch2 or cubed-sphere specific code
1170        (commented via 'cph-exch2')
1171    o pkg/seaice
1172      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
1173    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
1174       output of global_ocean.cs32x15.thsice .
1175    
1176    checkpoint59e
1177    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
1178      for B-grid vector (not yet tested) and C-grid vector (<- only used
1179      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
1180    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
1181      (#ifdef ALLOW_SALT_PLUME)
1182    o gather_2d/scatter_2d: removed halo regions
1183    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
1184      scheme and the corresponding test case (under front_relax dir). For now,
1185      only available with Skew-flux form and not yet tested in realistic set-up.
1186      adjoint: store directives updated, but gradient checks deteriorated,
1187      so maybe GM/Redi adjoint is now broken.
1188    o seaice adjoint
1189      * add AREA, HEFF, HSNOW as control variable
1190        (should not change lab_sea results)
1191      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
1192    o pkg/seaice:
1193      * added computation of saltFlux in seaice_growth;
1194        For time being, sea ice salinity is assumed constant
1195        contribution of snow flooding to freshening of sea ice is neglected.
1196        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
1197        defaults to 0.0 in order to maintain backward compatibility.
1198        Typical values for SEAICE_salinity are 4 to 10 g/kg.
1199      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
1200      * added SEAICE_availHeatFrac, which specifies fraction of surface level
1201        heat content used to melt or grow ice
1202      * commented out cap of HICE: it helps keep ice thinner
1203      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
1204      * applied OBCS T/S mask to HEFFM sea ice mask
1205    
1206    checkpoint59d
1207    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
1208     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
1209     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
1210    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
1211     and change default value of parameter "GM_Small_Number";
1212     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
1213       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
1214       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
1215    o pkg/ecco: cost function when applying pkg/smooth to controls
1216    o pkg/ctrl: add forcingPrecond run time parameter
1217    o pkg/seaice:
1218     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1219     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1220       changes verification/lab_sea
1221     - rearrange implicit part of u-equation in LSR solver to make it easier to
1222       read, understand, and debug. This causes changes at the truncation level.
1223     - fix (serious) bug in the boundary conditions (sign error in the implicit
1224       part) of the LSR solver. Changes all LSR results.
1225     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1226       is initilized with small values - does not change lab_sea results.
1227     - added HsnowFile initialization capability
1228    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1229     initialization of pkg/smooth and application to control vector
1230    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1231    o dependencies: pkg/profiles requires pkg/cal
1232    o pkg/profiles:
1233     - added option ALLOW_PROFILES_GENERICGRID
1234         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1235         that interpolation information (grid points and coefficients) is provided
1236         within the netcdf input files.
1237         -> sample matlab scripts can be found in MITgcm_contrib/gael
1238         that allow you to prepare netcdf input files.
1239     - also modified: cleaner include statements, cleaner error print statements,
1240       cleaner stops when error, and more tests of the netcdf input files consistency.
1241    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1242    o pkg/seaice:
1243     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1244       requires a new routine: seaice_diagnostics_fill.F
1245     - make sure that seaice does not move if not forced (pressure replacement
1246       method, Hibler and Ip, 1995), changes results
1247     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1248     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1249       It is turned off by default (=-1.), because it changes the results.
1250     - make it possible to read AREA from a file, too.
1251    
1252    checkpoint59c
1253    o add S/R and diagnostics for oceanic mixed-layer depth
1254    o move GMRedi call after all vertical mixing schemes (including KPP)
1255    o pkg/thsice:
1256     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1257      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1258    o pkg/obcs:
1259     - bug fix for balance code
1260    o pkg/seaice:
1261      - allow values of SEAICE_elasticParm > 1
1262      - add new parameter SEAICE_evpTauRelax as an alternative
1263        to SEAICE_elasticParm
1264      - make lsr boundary conditions free slip (by default), changes result
1265      - add code for no slip boundary conditions for lsr
1266      - set minimum of zeta to zero (and not 4e8) (changes results)
1267      - add a cap on AREA after advecting AREA if seaice_growth is not called
1268    o change calculation of Visbeck K:
1269      - no longer depend on tapering scheme; instead, compute slope (limited
1270        by GM_maxSlope). this is equivalent to what was comuted before with
1271        clipping or linear tappering.
1272      - fix vertical averaging (wrong by 1/2 level)
1273      - leave the old version (but will not be maintained) within
1274        #ifdef OLD_VISBECK_CALC / #endif
1275      - update output of exp. ideal_2D_oce
1276    o change error catch in calc_r_star to improve vectorization
1277    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1278      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1279    o adjoint:
1280      Re-organized adjoint checkpointing according to Matt Mazloff
1281      (but with modifs/completions/cleanups)
1282      Storing is now bundled into large arrays to optimized I/O
1283      (and second step in cleanup of the_main_loop)
1284    
1285    checkpoint59b
1286    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1287      - export/import (between ocean & coupler) fields needed for ocean DIC.
1288    o pkg/seaice:
1289      - get rid of three more exchanges seaice_calc_viscosities (required
1290        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1291      - bug fix in seaice_ocean_stress (update of lab_sea required)
1292      - reduce loop boundaries to necessary minimum also in seaice_evp
1293      - go back to the old way of computing deltaC/Z as the adjoint likes that
1294        better
1295    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1296      passive tracer to an Age Tracer) + update output.txt
1297    o pkg/exf:
1298      - implement A-grid / C-grid selection for wind-stress input files.
1299      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1300      for now, in exf_bulk_largeyeager04.F only :
1301      - change implementation for case where windspeed + 2. components wind-stress
1302        are read-in. AND use rhoConstFresh to convert evap.
1303    o pkg/seaice:
1304      - use correct EXCH_UV for wind-forcing (on A-grid).
1305      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1306        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1307    o pkg/exf:
1308      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1309      EXF_INTERPOLATION:
1310      - merge global_with_exf/code version of exf_interp_read.F
1311        to the main code ;
1312      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1313        reading the file ; Important: This options needs to be defined to recover
1314        previous code.
1315        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1316      - no longer loose real*8 precision along the way when using exf_iprec=64.
1317    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1318      - change discretisation of evp-solver in order to avoid another exchange
1319        (changes lab_sea) and clean up a little
1320      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1321        help the adjoint (this also changes the results slightly)
1322      - add a few "_d 0" where they had been missing in seaice_evp.F
1323      - cleaning up: remove unused seaice_calc_rhs.F
1324    o pkg/exf: some cleaning-up:
1325      - change various "constants" into runtime parameters
1326      - cleaned-up Large&Yeager04 routine which should eventually
1327        replace exf_bulkformulae.F (changed names of S/R and CPP)
1328        and merged various ALLOW_ATM_WIND options
1329     only used with thsice pkg (in thsice_get_exf.F):
1330      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1331        which are used when useStabilityFct_overIce=TRUE (= the default)
1332      - change default values of ice & snow emissivity and scale downward LW
1333        by ice & snow emissivity.
1334    o pkg/thsice:
1335     fix few little problems, in thsice_calc_thickn.F:
1336      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1337      - melt only laterally if hIce < hThinIce (as the comments say)
1338      and in thsice_extend.F:
1339      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1340      - start to form ice as soon as the minimum ice-volume is reachable.
1341     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1342      and cpl_aim+ocn
1343    o pkg/kpp
1344     - move computation of surface related input fields to KPP into a new
1345       subroutine kpp_forcing_surf.F
1346     - remove wrong (within bi,bj loops) EXCH calls.
1347     - little cleaning (add argument myThid in last position, cvs header ...)
1348     - for now, fix conservation problem by exchanging KPPviscAz (may not
1349       be the best fix)
1350    o pkg/seaice
1351     - check for inconsistent evp parameter/cpp-flag combination
1352     - remove leftover errIO flat for obsolete name list error handling
1353    o OpenAD
1354     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1355    
1356    checkpoint59a
1357    o pkg/seaice: some parameter clarifications and a little bit of clean up
1358    o pkg/thsice: rename run-time parameters:
1359       himin       -> hIceMin
1360       himin0      -> hThinIce
1361       hihig       -> hThickIce
1362       i0          -> i0swFrac
1363       transCoef   -> bMeltCoef
1364       frac_energy -> fracMelting
1365      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1366       with default values (for now) that do not change the results.
1367      remove old version of thsice vars advection in pkg/seaice.
1368    o in FFIELDS.h:
1369      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1370      - make pLoad & sIceLoad always available (but still only used if
1371         ATMOSPHERIC_LOADING is #define).
1372    o pkg/kpp: replaced _KPP_RL with _RL
1373    o bug fixes for vertical diffusivity computations when both KPP and
1374        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1375        are no longer updating the vertical diffusivity array
1376        (passed as argument) but are (re-) setting those arrays.
1377    o pkg/seaice: fix bug in evp solver, while doing that
1378      - change (improve?) discretization of stress computations for both
1379        cgrid-lsr and evp solver
1380      - add a new routine to compute strain rates
1381      - the above changes lab_sea results
1382      - add no slip conditions for evp solver (off by default), lsr-version
1383        may follow
1384      - fix exchange for shear at Z-points (does not change lab_sea)
1385      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1386        (to force the user to pick a time step since there is not "safe" way
1387        of choosing it)
1388      - add principal stress diagnostics
1389      - rearrange fields for evp a little to avoid having to call a: too many
1390        exchanges and b: exchanges for stress trensor components which we do
1391        not have.
1392      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1393        of evp, complete rewrite for lsr case (latter is does not yet work
1394        in all cases)
1395    o pkg/kpp: add code to have mixing in shelf ice caverns
1396      - add myThid to all kpp routines (long overdue)
1397    
1398    checkpoint59
1399    o pkg/exf:
1400      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1401        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1402      - move exf header files from lower_case.h to UPPER_CASE.h ;
1403        add missing cvs Header & Name
1404      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1405      - add namelist param. selectStressGridPosition, exf_monFreq
1406      - retire many _CLIM routines, and remove data.exf_clim
1407        + params moved to data.exf
1408        + climsst, climsss now handled by exf_set_gen, i.e.
1409          climss?period=0 refers to constant field,
1410          climss?period=-12 to monthly forcing
1411      - split up namelists in data.exf
1412    o pkg/seaice:
1413      - remove seaice_exch and seaice_exch_uv
1414      - remove superfluous exchange of theta
1415      - add myThid to seaice_budget_ocean/ice
1416      - add new interface for atmospheric wind forcing (C-grid only)
1417        + new routine
1418        + two new field (taux, tauy for stress over ice)
1419        + removed one global field (DAIRN) for C-grid case only
1420    o pkg/thsise
1421      - 2nd set of modifs for thsice adjoint in conjunction with exf
1422    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1423    
1424    checkpoint58y_post
1425    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1426      vertical diffusivity, similar to that in MOM4; turned on using
1427      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1428      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1429    o Added capability for 3D specification of background vertical diffusion
1430      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1431      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1432      "data" file that contains the 3D vertical diffusivity coefficients.
1433    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1434      - add code within pkg thsice to advect & diffuse sea-ice fields
1435      similar to (and will replace) what has been added in  seaice_advdiff.F,
1436      but: - conserving Mass, Heat & Salt.
1437           - better when using non-linear advection scheme (not yet fully tested)
1438           - can also be used in atmospheric set-up (for now, only the diffusion).
1439    
1440    checkpoint58x_post
1441    o IO option for global-file compact format:
1442      - add options when generating topology (utils/exch2/matlab-topology-generator)
1443      - add I/O capability (pkg/mdsio).
1444      - adapt utils/matlab/rdmds.m to read this format.
1445      for now long-line format not yet supported by pkg/mdsio (& exch2).
1446    o shelfice: add a few diagnostics
1447    
1448    checkpoint58w_post
1449    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1450      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1451      (and replace horiVertRatio in NH code).
1452      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1453                         and tutorial_plume_on_slope (sensitive to truncation)
1454    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1455      directly to drive seaice model (C-grid only)
1456    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1457     - reintroduce computation of wind from stress,
1458     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1459       mass points to avoid tau = 0
1460     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1461    o rdmnc.m: make it work with "global" files created with gluemnc
1462    o rdmnc.m : some improvements in dealing with singleton dimension
1463      (tested on all testreport mnc output files).
1464    o genmake2: disable pkg/profiles if netcdf test fails.
1465    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1466    o move call to cal_readparms up to make calendar parameters/variable available
1467      to all packages
1468    
1469    checkpoint58v_post
1470    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1471      useDynP_inEos_Zc tested.
1472    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1473    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1474      and portions thereof.  See read_cs.txt for description and examples.
1475    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1476      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1477      following the great-circle arc between those 2 points.
1478    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1479      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1480    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1481     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1482     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1483     - still needs work (not working with some options ; efficiency to improve)
1484       and serious testing.
1485     - use this scheme for temperature & salinity in 2 advection test exp.:
1486       advect_xy & advect_xz, respectively.
1487    
1488    checkpoint58u_post
1489    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1490    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1491    o testreport: add option "-skipdir" to skip some test.
1492    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1493      momentum calculation.
1494    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1495    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1496      remove checkpoint.F and the_correction_step.F (no longer used);
1497      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1498    o add option (linFSConserveTr) to correct for tracer source/sink due to
1499      Linear Free surface
1500    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1501    o pkg/thsice: fix reading mnc-pickups
1502    
1503    checkpoint58t_post
1504    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1505    o pkg/mdsio:
1506     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1507       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1508       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1509     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1510     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1511       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1512     - new S/R (to replace MDSWRITEMETA), which allows to write more
1513       informations (variable names, time ...) to meta files.
1514     - modify rdmds.m to give back the meta file content.
1515    o pkg/diagnostics: change vertical interpolation to be safer, and more
1516       flexible (define p-levels to interpolate to in data.diagnostics);
1517      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1518       diagnostic pointer.
1519    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1520    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1521    o fix multi-category seaice:
1522     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1523       SEAICE_MULTICATEGORY
1524     - fix short wave heat flux
1525    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1526       and allow to use EVP solver. Change forward lab_sea: test both EVP
1527       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1528    o Initial check-in of lab_sea adjoint
1529      (very similar to natl_box_adjoint/code_seaice)
1530      * used C-grid and EVP solver
1531      * used KPP, GM/Redi
1532      * uses inAdExact=.TRUE.
1533      * gradient checks fail for both ADM and TLM
1534        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1535        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1536        issue is related to forward mismatch between g77 an ifort
1537    o pkg/seaice: overhaul of thermodynamics
1538     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1539     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1540     - move a few global fields out of SEAICE.h into seaice_growth.F and
1541       make them 2D (FICE/QNETO/ ...)
1542     - remove FO (it is the same as QNETO)
1543     - introduce a few local fields to avoid modifying external fields such
1544       as atemp, etc.
1545    
1546    checkpoint58s_post
1547    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1548      changed exf_set_gen.F so that
1549        genperiod=0 means input file is one time-constant field and
1550        genperiod=-12 means input file contains 12 monthly means
1551    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1552      this affects truncation error ; generate new output file for exp. which
1553      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1554        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1555        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1556        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1557        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1558        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1559    o start implementation of deep-atmosphere and anelastic formulation
1560    o verification: remove 2nd copy of input files and use script "prepare_run"
1561      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1562    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1563    o profiles: fix for multithreaded case
1564    
1565    o diagnostics: rename few diags:
1566      s/'PRESSURE'/'RCENTER '/g
1567      s/'TICE    '/'oceFreez'/g
1568      s/'TAUX    '/'oceTAUX '/g
1569      s/'TAUY    '/'oceTAUY '/g
1570      s/'SWFLUX  '/'oceQsw  '/g
1571      s/DIFx/DFxE/g
1572      s/DIFy/DFyE/g
1573      and add few ocean-forcing diagnostics:
1574      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1575    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1576      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1577      as actual snow thickness.  It now refers everywhere to effective snow
1578      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1579    
1580    checkpoint58r_post
1581    o modifications to pkg/seaice/growth.F, which change results of
1582      lab_sea experiment: fixes pertain to melting snow over open water, to
1583      masking EVAP under sea ice, and to using the correct AREA variable for
1584      computations of EVAP, PRECIP, HSNOW, and GHEFF
1585    o add ability to read bathy, salt, and theta using MNC (off by def)
1586    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1587      both are turned off by default and do no change any results
1588    o seaice advection with pkg/thsice: a step toward the use of non-linear
1589      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1590    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1591      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1592      in natl_box (affects results @ truncation level: update output.txt)
1593    o multi-threading and IO:
1594      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1595      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1596        (needed to work with SingleCpuIO): tested in all verif. exp.
1597    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1598      affects the results (but none of the verification test uses this scheme).
1599    o Adding some pkg/diagnostics capability to pkg/seaice
1600      (will certainly be subject to changes)
1601    o ctrl: adding new control variables:
1602      lwflux, lwdown, evap, snowprecip, apressure, runoff
1603    
1604    checkpoint58q_post
1605    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1606      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1607      high_res_cube configuration by 4% on Columbia.
1608    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1609      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1610      dynamical allocation (seems to work in multi-threaded).
1611    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1612      single CPU io) so that TAF does not have to see EESUPPORT.h
1613    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1614    
1615    checkpoint58p_post
1616    o obcs: stop if obcs is used with useCDscheme = .true.
1617    o shelfice:
1618     - fix a sign error so that no slip at shelfice interface works
1619     - remove stop for combination non-hydrostatic code and shelfice. That does
1620       not mean, that the results are correct, but at least they are numerically
1621       stable
1622    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1623    o added adjoint exch routined for all exch*3d* routines
1624      and updated flow directives
1625    
1626    checkpoint58o_post
1627    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1628      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1629    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1630      and clean-up reading/writing of pickup files.
1631    o fix local version of read/write pickup (NH part) in rotating_tank/code
1632    o simplify EXCH interface:
1633     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1634     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1635    o added the regrid package
1636    o shelfice:
1637     - add a simple boundary layer scheme to reduce noise
1638     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1639    
1640    checkpoint58n_post
1641    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1642       local variable (not in common block).
1643    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1644      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1645      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1646        to work with SingleCpuIO.
1647    o add "_d 0" to real constant of pkg/cfc subroutines ;
1648       update exp. cfc_exemple & tutorial_cfc_offline output files.
1649    o multi-threading and IO:
1650      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1651        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1652      - barrier before and after reading.
1653      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1654      - avoid using MDS_WRITELOCAL for LAND pkg output.
1655      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1656        common-block variables ; Allows multi-threading with master-thread IO.
1657    o change default MAX_NO_THREADS from 32 to 4 ;
1658      and stop cleanly when MAX_NO_THREADS is too small.
1659    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1660    
1661    checkpoint58m_post
1662    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1663       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1664    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1665       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1666       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1667    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1668        add MITgcm_tutorials (= code + all the tutorials)
1669    o ecco, option to compute cost for total ssh (mean+anom)
1670    o consistent with addition of ptracer and ssh in pkg/profiles
1671    o profiles: adding ptracer and ssh
1672    o testreport: change multi-test output-file name
1673      (from output.txt.{name} to output.{name}.txt)
1674    o profiles: now ok for mutli-tiles case
1675    o seaice: add 4 parameters for different advection schemes for area,
1676      (effective) seaice thickness, enthalphy, and snow height. Their default
1677      is the standard parameter SEAICEadvScheme
1678    o calc_gw:
1679     - add cosFacU in zonal viscous flux (harmonic.visc.).
1680     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1681       of tutorial_plume_on_slope.
1682    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1683    o calc_gw: true flux-form, account for horizontal grid spacing.
1684      update rotating_tank results, but not plume_on_slope (affected at
1685      truncation level, 11 digits).
1686    
1687    checkpoint58l_post
1688    o calc_gw:
1689     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1690     - remove side-drag for now (need to fix it); update plume_on_slope results.
1691     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1692    o commit code to make SST/SSS weights spatially variable
1693      (based on either variable in-situ or variable initial T/S weights)
1694    o pkg/ecco:
1695      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1696        now based on horizontally varying weights wthetaLev, wsaltLev
1697      * cost_averagesflags now returns year indices in addition to day, month
1698      * sflux balance is performed on annual basis
1699        (sflxumm, sfluxmm2, bal_sfluxmm)
1700      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1701        including separate counting and multipliers
1702    o pkg/rbcs
1703      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1704    
1705    checkpoint58k_post
1706    o testreport:
1707     - always build in dir. "build" (if not there, mkdir build instead of building
1708       & running in input)
1709     - run in dir run (if it exists), in build otherwise.
1710     - call prepare_run (if input/prepare_run exists)
1711     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1712    o pkg/exf modifications to interpolation and rotation routines for more
1713       reasonable treatment of North Pole singularity: for tracers North Pole
1714       value is set to northernmost zonal-mean value, for zonal velocity it is
1715       set to zero, and for meridional velocity it is set to northernmost value.
1716    o pkg/exf/exf_check_range.F
1717     - add tile index to diagnostics and move stop statement to the very
1718       end of the routine.
1719    o pkg/diagnostics: (diagnostics_main_init.F)
1720      define title of isomorphic variables according to the current config.
1721    o pkg/thsice with pkg/seaice dynamics:
1722    - fix domain of computation (interior only, required for exf) and do exchanges
1723    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1724    o towards a standard way of dealing with multi-threading in MONITOR
1725      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1726    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1727       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1728    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1729    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1730    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1731       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1732    o tracer advection:
1733     - clean-up and simplify calc_common_factors.F
1734     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1735       advection subroutine (but still not used within DST advection S/R)
1736    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1737    
1738    checkpoint58j_post
1739    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1740      from file (collects calls previously in FORWARD_STEP)
1741    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1742    o adjoint store dir. adjusted accordingly
1743    o genmake2
1744      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1745    
1746    checkpoint58i_post
1747    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1748      on wind stress (SEAICEstressFactor defaults to 1.)
1749    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1750      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1751    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1752      on CS-grid: no longer loosing mass.
1753    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1754    o pkg/ggl90: fix sloppy output and fix a bug
1755    o pkg/seaice: added SEAICEuseEVPpickup parameter
1756      - Set to false in order to start EVP solver with
1757        non-EVP pickup files when using SEAICEuseEVP
1758      - fix sign error in diffusion in seaice_calc_rhs
1759    
1760    checkpoint58h_post
1761    * Modifications for bottom topography control
1762      o replace hFacC by _hFacC at various places
1763      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1764      o add non-self-adjoint cg2d_nsa
1765      o update autodiff support routines
1766      o re-initialise hfac after ctrl_depth_ini
1767      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1768    * Adding verification for 5x5 box (4-layer) bottom topography control
1769    
1770    checkpoint58g_post
1771    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1772       used for mean seasonal cycle, mean diurnal cycle); add an example
1773       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1774    o pkg/ggl90:
1775      - add parameter (minimum surface kinetic energy)
1776      - fix bug (avoiding division by zero)
1777    o couple pkg/thsice to pkg/seaice:
1778      - modify advection in seaice to accomodate new scalar fields to be advected
1779      - only muliDimAdection scheme work with seaice/thsice
1780      - mapping of thsice-variables to seaice-variables, back and forth
1781      - does not break the verification experiments, but does not give the
1782        desired results either
1783    o pkg/seaice
1784      - make (default) second order advection a bit less confusing?
1785    
1786    checkpoint58f_post
1787    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1788      to pkg/seaice):
1789      - new routines thsice_map_exf and thsice_get_exf provide the interface
1790      - add an additional formal parameter to thsice_solve4temp
1791    o pkg/exf:
1792      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1793      - correct Stefan-Boltzmann constant
1794      - new parameter for longwave surface emittance
1795      - separate some stuff from exf_bulkformulae into new routines  
1796        exf_radiation, exf_wind
1797      - add new parameters and constants: longwave emissivity for ocean, ice
1798        and snow, evaporation parameters over ice
1799      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1800        either wind from stress or stress from wind
1801    o pkg/thSIce:
1802    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1803    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1804       and THSICE_CALC_THICKN
1805    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1806    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1807      to make debugging easier.
1808    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1809    o pkg/bulk_force:
1810      - clean-up comments and parameters ;
1811      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1812    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1813      generate new output for test-experiment: aim.5l_cs.thSI
1814    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1815      testreport accordingly
1816    
1817    checkpoint58e_post
1818    o SEAICE_CGRID adjoint done
1819    o R_STAR adjoint implemented.
1820      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1821      * need to sort out init. of h0facc, etc.
1822    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1823      to be able to use it in pure forward.
1824    
1825    checkpoint58d_post
1826    o upgrade simple test-experiment to tutorial example:
1827     step.1: duplicate the experiment and (step.2) will remove the old copy.
1828      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1829      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1830      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1831      tutorial_global_oce_biogeo    <- copy of dic_example
1832      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1833      tutorial_plume_on_slope       <- copy of plume_on_slope
1834      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1835      tutorial_global_oce_optim     <- empty for now (David ?)
1836      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1837     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1838    o correct a sign problem in cost_scat.F
1839    o obcs and ptracers: fix boundary conditions for advections schemes
1840      with larger stencil
1841    o thsice adjoint: start
1842    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1843      completeness
1844    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1845      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1846    o ptracers adjoint:
1847      * avoid extensive recomputatations
1848      * fix missing re-init. of gptr (missed by TAF)
1849    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1850      me to turn off the excessive output to STDOUT that this package produces
1851    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1852      and add those terms in Vector-Invariant formulation.
1853    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1854      if the control period (xx_hfluxperiod etc) is 0
1855    o in profiles pkg, clean routines and fix details
1856    o in ecco pkg, reading ssh data:
1857      fix problem in case the model does not start at iter0=0
1858    o fix mnc-pickup/restart for ptracers
1859    o new package prifiles:
1860      code to compute profile-based cost by Gael Forget
1861      (modifs in ecco, ctrl, autodiff)
1862    o Benign bug fix in initialization (spotted by M. Mazloff) of
1863      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1864    
1865    checkpoint58c_post
1866    o adjoint: finish NLFS adjoint and provide reference output in
1867      verification/global_ocean.90x40x15/results_ad_nlfs
1868    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1869      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1870      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1871      with SEAICE_CGRID defined.
1872    o move calendarDumps from "data" to "data.cal" and clean-up the code
1873      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1874    o add useEXF & useCAL flags (for now, set in hard-coded way)
1875    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1876      (were missing in NH mode, and wrong in quasihydrostatic mode).
1877      waiting for Chris updated version of calc_gw to add those CALLs.
1878    o fix bug in quasihydrostatic S/R ;
1879      add a test for this option: global_ocean.90x40x15.qshyd
1880    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1881      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1882    o add on/off flag useOffLine for package OFFLINE
1883    o seaice:
1884      - modify advection so that it works also on the C-grid
1885      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1886        problem in multi-tile runs with C-grid
1887      - add flags for clipping ice velocities and/or masking solver forcing
1888      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1889        C-grid solver
1890      - added a few comments to seaice_diffusion.F
1891      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1892        are now exclusive)
1893      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1894        required re-ordering the code a little:
1895       + make DAIRN global variable (defined in SEAICE)
1896       + move computation of the viscosities eta and zeta into a new separate
1897         routine (because I need to recompute them in seaice_ocean_stress.F)
1898    
1899    checkpoint58b_post
1900    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1901      update output.txt of exp. aim.5l_cs.thSI
1902    o various mnc cleanups and improvements:
1903      + shrink lookup tables by factor of ~4
1904      + better error reporting when running out of lookup space
1905      + able to handle longer path/file names (up to 500 chars)
1906    o adjoint:
1907      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1908      - TBD: "hidden" mom_vecinv recomp. in dynamics
1909    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1910     (allow to differentiate between forcing components using new integer flags:
1911      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1912     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1913    o ecco
1914      - enable trend removal from SSH anomaly obs.
1915    o adjoint
1916      - a fix for PmEpR when #undef EXACT_CONSERV
1917      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1918      - try to fix "hidden" recomp. in forward_step for NLFS
1919        (NLFS seems broken sometimes after I checked it in)
1920    o seaice:
1921     - add c-grid version of the dynamic solver:
1922       + three new routines that are the c-grid substitute lsr, dynsolver
1923         and ostres
1924       + put a few fields that were local to dynsolver into global common
1925         blocks, so that I can move the computation of stresses etc into
1926         seaice_lsr (saves coding but may break the adjoint).
1927     - replace more hardwired parameters by runtime parameters
1928     - add ice masks that mask the rhs of the implicit solvers where there
1929       is no ice (commented out in seaice_dynsolver, because i am not sure
1930       if this works properly), eventually this should replace the clipping
1931       of ice velocities in seaice_dynsolver to +/-40cm/s.
1932    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1933      include it only where its needed
1934    o move balancing of fluxes before the call of external_forcing_surf
1935    o seaice:
1936      - correct units of turning angles (now they are really in degrees)
1937      - move computation of GWATX/Y out of main routine into dynsolver
1938      - initialize GWATX/Y in seaice_init
1939    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1940      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1941    o seaice: add runtime flags for turning angles (default to zero)
1942    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1943      and trend from exf forcing and ctrl control adjustments
1944    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1945      (since checkpoint57x_post)
1946    o change the default rotation period to 86164.s = the Earth rotation
1947    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1948      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1949    o seaice advection: add code for choosing between the default (2nd order
1950      central differences) and multiDim advection schemes provided by
1951      pkg/generic_advdiff
1952    o seaice:
1953      - removed all references to SEAICE_GRID.h fields from
1954        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1955        (cubed-sphere configuration will change a little)
1956      - grid computations in seaice_init are obsolete now.
1957      - cleaned up code a little so that is easier to read (hopefully).
1958      - added new (better?) discretizations of default advection and diffusion
1959        (turn on with SEAICEuseFluxForm)
1960      - replace 1 in 3d global fields by kSurface in growth.F
1961      
1962    checkpoint58a_post
1963    o seaice:
1964      - bug fix in advect.F
1965    o shelfice:
1966      - separate shelfice load anomaly from pload (breaks with time
1967        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1968        Its default is 0., but it may be computed more cleverly from (unknown)
1969        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1970        done offline. A good approximation of the pressure load anomaly is
1971        necessary to avoid large initial adjustment processes underneath
1972        deep-reaching shelfice.
1973      - small fix in ISOMIP shelfice_thermodynamics
1974      - add more sophisticated thermodynamics of Hellmer (1989), this is
1975        now the default
1976      - give a few constants more intuitive names
1977    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1978      if bulk formulae are used in long integration (especially EmPmR). Turn
1979      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1980      if balancePrintMean, the imbalance that is substracted is printed to
1981      STDOUT.
1982    o fix bug (typo) in obcs_apply_eta.F
1983    o add a new package shelfice which enables us to model the circulation
1984      underneath shelf-ice with draughts of hundreds of meters.
1985     - works
1986     - to do: + include improved thermodynamics
1987              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1988                instead of new field kTopC
1989              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1990                instead of new field R_shelfIce and new code in ini_depth.F
1991                and ini_mask_etc.F?
1992              + adjust vertical mixing schemes?
1993    o seaice pkg:
1994     - add a cpp-flag to include a simple formula for a salinity dependent
1995       freezing point of sea water at the surface
1996     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1997       meridional stresses are now different (and hopefully correct)
1998    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1999       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
2000       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
2001    o pkg/diagnostics: add options and parameters for regional-statistics
2002       diagnostics ; define regions by reading a region-mask from a file
2003       (might add other options later)
2004    o pkg/bulk_force:
2005     - add option and parameters to use AIM surface-flux formulae.
2006     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
2007       others forcing fields (defined in PARM05, parameter file "data") are loaded
2008       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
2009     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
2010     - use the right EXCH call for uwind,vwind (to work on CS-grid).
2011     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
2012       and parameters (note: calcWindStress replaces .NOT.readwindstress).
2013     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
2014    
2015    checkpoint58
2016    o add "--embed-source" option to genmake2 which, when the supporting
2017      tools can be compiled (as determined by genmake2) will turn on the
2018      embed_files package which then embeds the entire MITgcm source code
2019      (*.[fFhc] + Makefile) used for the build within the executable
2020      - requested by CNH but off by default
2021      - adds a paltry <9MB to the mitgcmuv executable in most cases
2022      - only writes the output when useEMBEDSRC in eedata is true
2023    o clean up 3-dim. relaxation codes:
2024      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
2025      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
2026      * Thanks to Tom Haine for testing!
2027    
2028    checkpoint57z_post
2029    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
2030      affects output (@ truncation level) of exp. plume_on_slope ; updated.
2031    o fix the pickup behavior for obcs in combination with ptracers
2032    o fix a bug in ptracers_external_fields_load
2033    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
2034      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
2035    o transfered surface NH pressure to eta field (if exactConserv).
2036    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
2037         and update lab_sea output.txt file.
2038    o completing 3-dim. relaxation code: additional term
2039         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
2040      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
2041      * At compile time, in "EXF_OPTIONS.h" set
2042          #define  ALLOW_CLIMTEMP_RELAXATION
2043          #define  ALLOW_CLIMSALT_RELAXATION
2044      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
2045          tauThetaClimRelax3Dim = 15552000.0,
2046          tauSaltClimRelax3Dim  = 15552000.0,
2047      * 3 cases:
2048          1) Use a constant-in-time 3-dim. field
2049          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
2050          3) Real-time relax. to time-evolving prescribed field
2051    o Adding Laplacian-type smoothness constraint on
2052      initial and boundary (forcing) controls (ic, bc)
2053      * enable at compile-time via
2054        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
2055      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
2056      * Absolute scale somewhat unclear so far
2057      * no area weighting was included since no other cost term does so far
2058    
2059    checkpoint57y_post
2060    First step for a NLFS adjoint
2061    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
2062    o new init. routines for calc_r_star, calc_surf_dr
2063    o still need to deal with ini_masks_etc
2064    o testreport seemed happy
2065    checkpoint57y_pre
2066    
2067    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
2068    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
2069    o add new offset feature to offline pkg (plus minor cleanup)
2070    o cfc fixes for final year of integration
2071    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
2072      be in GCHEM_OPTIONS).
2073    
2074    checkpoint57x_post
2075    o fix testreport Pb in multiple test experiment.
2076    o cleanup our namelist syntax in verification:
2077      - make it more F95 standards compliant (some work still needed)
2078      - allows the vast majority of our tests to work with gfortran
2079    o Non-Hydrostatic:
2080     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
2081     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
2082    o Allow to apply AB on T,S rather than on AB(gT,gS):
2083     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
2084     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
2085       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
2086     - need a "clever" read_pickup to restart from the other AB formulation
2087    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
2088    o remove some unused variables (reduces number of compiler warnings)
2089    o adjoint
2090      * Disable useVariableViscosity for adjoint for time being
2091        (there are a number of extensive recomputations)
2092      * Initialize certain variables needed for adjoint
2093    
2094    checkpoint57w_post
2095    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
2096                 fix the singleCpuIO RS version of MDSWRITEFIELD
2097       and add a WARNING if using globalFiles=T with multi-processors.
2098    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
2099      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
2100    o tracer advection scheme:
2101      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
2102       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
2103       was not very convenient).
2104      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
2105       (further tests needed for the implicit DST & Flux-Limiter schemes).
2106    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
2107      and sRef for convenience, handy, when you want to initialize
2108      ptracers in a large domain with a constant non-zero value. Also,
2109      untangle ptracers_init.F a little.
2110    
2111    checkpoint57v_post
2112    o change dome exp. to use variable viscosity in side-drag terms.
2113    o remove all the files from the cfc_offline test since they are now
2114      incorporated into tutorial_cfc_offline which has been producing
2115      identical results for a few days of testing
2116    o add new parameter: sideDragFactor to enable half-slip-side BC
2117      and change side-drag S/R to use viscosity from mom_calc_visc
2118      (can switch back by setting sideDragFactor=0.); affects results at
2119      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
2120       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
2121    o vorticity & strain are now computed without masking, to account for
2122      no-slip-side BC in variable viscosity calculation ; mask is applied
2123      anyway later on, before computing advection/coriolis terms.
2124    o modify exp4 to test new obcs support for reading from external files
2125      and for passive tracers
2126    o fix behavior of ptracers_monitor when monitor output is written to a
2127      netcdf-file; still not independent of monitor.F (writes in the same
2128      file).
2129    o change default value of tRef (put a uniform, meaningful value for ocean
2130      & atmos) and initialize sRef (was missing, as Martin mentioned).
2131    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
2132      to be proportional to enstrophy dissipation length.  Thus,
2133       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
2134      This is now consistent with Smagorinsky and with the manual.
2135    
2136    checkpoint57u_post
2137    o OBCS and PTRACERS: add open boundary support for passive tracers
2138      - either use homogenous (pseudo) v.Neumann conditions or prescribe
2139        OB-values from file; this is not different from the way theta and salinity
2140        are treated
2141      - however, Orlanski-radiation conditions are not supported, and the model
2142        will stop if you use pTracers and Orlanski at the same time.
2143      - beefed up the rountine obcs_external_fields_load: now only those open
2144        boundary values are overwritten with values from files for which there
2145        are really files, otherwise the OB-fields remain untouched. This makes
2146        it possible to use different OBs at different ends of the domain (as
2147        with EXF)
2148    o reduce number of exch calls in shap_filt (s2).
2149    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
2150      truncation level) 4/5 MLAdjust test results (11&12 digits match).
2151    
2152    checkpoint57t_post
2153    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
2154    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
2155      same truncation, independent of the face number: affects affects several
2156      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
2157    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
2158      note that biharmonic viscosity + no-slip was not tested in any experiment.
2159    o fix bug in non-linear free-surf side-drag ; generate new output for
2160      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
2161    o make mnc honor the writeBinaryPrec flag for most kinds of output
2162    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
2163    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
2164      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
2165    o add brackets in multi-terms sum to get same truncation, independent of
2166      the face number (manage to get exactly same value of gU,gV at the cs-edge)
2167      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
2168    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
2169      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
2170      a maximum grid-scale Reynolds number.  Also, changes all length calculations
2171      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
2172      Suggested values of viscosity parameters found in mom_calc_visc.
2173      Many new viscosity diagnostics available.
2174    
2175    checkpoint57s_post
2176    o Add clearing-house for viscosity calculations, mom_calc_visc and
2177      correct numerous bugs in LeithD and Smagorinsky discretizations.  
2178      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
2179      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
2180      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
2181      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
2182      The Strain-Tension form is now called with useStrainTensonVisc=.true.
2183      ViscAhStrain and viscAhTension are now retired.
2184    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
2185    o In response to JMC's bug report, genmake2 now ignores any soft-links
2186      that it finds in the *current* directory when searching for files.
2187      Soft-links found in any other source directories will still work as
2188      they did before.
2189    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
2190      a C routine to unlimit the stack size
2191    o mnc-ify pkg/aim snapshot vars
2192    o mnc-ify pkg/land as requested by Daniel
2193    o various changes to mnc including:
2194      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
2195      - output can now be grouped so that all files within a group
2196          change the ITER portion of their names in lock-step together
2197      - can now read ("global") PER-FACE (in addition to PER-TILE) files
2198          and works with both EXCH1 and EXCH2 (but needs more testing)
2199      - writing works for all verification test cases w/ g77 on Linux
2200    
2201    checkpoint57r_post
2202    o make MNC variable initialization happen earlier
2203    o add diagnostics for (almost) each term of the momentum Eq.
2204    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
2205    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
2206    o remove MINIMAL_TAVE_OUTPUT option ;
2207      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
2208    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
2209      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
2210    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
2211    o add time-dependent SST, SSS control
2212    o cost terms in ecco/ modularized (new cost_generic.F)
2213    o cost_averages routines are modularized (new cost_averagesgeneric.F)
2214    o new infrastructure for seaice model vs. obs misfits in seaice/
2215      * driver from the_main_loop.F is seaice_cost_driver.F
2216      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
2217      * gradient check in Exp. 6a of natl_box_adjoint/
2218    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
2219      (see README file)
2220    
2221    checkpoint57q_post
2222    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
2223    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
2224      - bug was reported by Jean-Michel and Ian Fenty
2225    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
2226      update exp. cpl_aim+ocn output.
2227    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
2228      Needed for high-res. runs with large global files
2229      to be able to limit tapelev size
2230    o Changed some tests for adjoint:
2231      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
2232      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
2233      * global_ocean.90x40x15/ back to default 3-level checkpointing
2234    o Modifications to enable scripted COMMON to MODULE conversion
2235      * verification/OpenAD/code/ has necessary scripts and description;
2236      * converts, compiles and runs successfully;
2237    
2238    checkpoint57p_post
2239    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
2240    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
2241      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
2242    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
2243    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
2244      (was already the case for dissipation with mom_vecinv,
2245       and also the case for grad.PhiHyd when staggered-timeStep)
2246      This will allow to put dissipation out-off the AB time-stepping.
2247     Unfortunately, affects truncation error. Update output of exp. that "fails"
2248      (cg2d matching number) and leave the others for later: front_relax(10),
2249      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
2250      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
2251    
2252    checkpoint57o_post
2253    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2254      (2) its ready to be documented during the 20050801 DocFest
2255    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2256      for ideal_2D_oce and lab_sea on linux_ia32_g77
2257    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2258      in global1x1_tot/code_seaice_adj to access indices 32, 33
2259      (worth another tag)
2260    
2261    checkpoint57n_post
2262    o adding precip control xx_precip 32
2263    o adding swflux control xx_swflux 33
2264    o Replacing 10 forcing penalty cost routines by 1 generic.
2265    o Implementing partitioning in time-mean and variable adjustment
2266      for atmos. state.
2267    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2268    o in natl_box_adjoint:
2269      * updated exp 1 to 10
2270        (but does not have time-mean vs. variable split results yet)
2271    o updated global1x1/*_seaice_adj/
2272      to incorporate latest changes
2273    o enable useSingleCpuIO for mdsio vector routines
2274      (applies in particular to tapelev I/O)
2275    o removed inefficient K-loop in all active_file*control*.F
2276    
2277    checkpoint57m_post
2278    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2279      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2280    o pkg/exch2: filling of face-corner halo regions is optional
2281      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2282    
2283    checkpoint57l_post
2284     tag before updating tutorials (pre-release-2)
2285    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2286       for output and interpolation of input fields onto model grid)
2287    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2288       Affects results of exp. rotating_tank ; update output.txt.
2289    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2290          and taking the square quantity and/or using a fraction-weight field.
2291    o fix aim_diagnostics_init.F mate numbers.
2292    o add mnc output capability to diagnostics/diagstat and update
2293      our cvsignore files for the ACSII output generated
2294    
2295    checkpoint57k_post
2296    o lab_sea now uses diagnostics package and provides a suite of
2297      new EXF diagnostics output.
2298    
2299    checkpoint57j_post
2300    o exf
2301      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2302        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2303        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2304      * extended diagnostics output
2305        - now includes all EXF variables
2306        - hs, hl moved to common block
2307        - separate S/R for diagnostics, called after ctrl vector is added
2308        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2309        - EXFqnet contains true Qnet (i.e. includes qsw)
2310      * updated verif. lab_sea, global_with_exf
2311      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2312        to ensure that diagnostics sees a true EXFqnet
2313    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2314    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2315      several times with different frequencies.
2316    o mnc-ify the thsice package as requested by Daniel Enderton
2317      - the monitor--MNC output needs work
2318      - many attributes need to be added (most are currently blank)
2319    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2320      - many attributes need to be added (most are currently blank)
2321    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2322    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2323    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2324      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2325         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2326    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2327     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2328    
2329    checkpoint57i_post
2330    o Diagnostics package was changed: diagnostic allocation is now deactivated
2331      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2332    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2333      add 1rst Order upwind vertical Shear.
2334    o add a quick fix for A/B checkpointing in OFFLINE mode
2335    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2336      end-run around the C/Fortran linking horror in eesup/src/timers.F
2337    o added pkg/runclock: allows user to terminate run based on wall clock
2338    o added non-hydrostatic scaling parameter: nh_am2
2339    o pkg/my82: futile attempt to make results compiler-independent by adding
2340      some "_d 0", etc. no effect.
2341    o for mnc output, fill the 'T' coordinate var with myTime and create a
2342      separate 'iter' variable for iteration count
2343    o pkg/diagnostics:
2344      add new capability: output of Global/Regional & per-level statistics ;
2345      tested against monitor output (including land & thSIce) on various exp.
2346    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2347    
2348    checkpoint57h_done
2349      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2350      data.diagnostics, data.gchem, data.ptracers) is done.
2351    
2352    o pkg/diagnostics: prepare for Global/Regional statistics.
2353      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2354    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2355      and rename it: DIFFERENT_MULTIPLE
2356    
2357    checkpoint57h_post
2358    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2359    o pkg/diagnostics: change output frequency, now in seconds (instead
2360      of Nb of iterations). This requires to change data.diagnostics.
2361    checkpoint57h_pre
2362    
2363    o in mnc, let the user create the output dir if both mnc_outdir_date
2364      and mnc_outdir_num are false
2365    o add fflags() to pkg/diagnostics which allows one to specify, on a
2366      per-file basis, the file precision [default behavior is unchanged]
2367    o added diagnostics to pkg/kpp, including computation of mixed layer
2368      depth based on a temperature/density criterion
2369    o updated verification/natl_box to test the new pkg/kpp diagnostics
2370    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2371    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2372    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2373      not mnc -- this mistake was found by JMC and is now corrected
2374    
2375    checkpoint57g_post
2376    o add Adams-Bashforth 3rd Order time stepping:
2377      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2378      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2379    checkpoint57g_pre
2380    
2381    o make lambda[Theta,Salt]ClimRelax spatially varying
2382      (default remains spatially uniform constant based on tau)
2383    o added new control variables
2384      * init. uVel, vVel, etanN
2385      * lambda[Theta,Salt]ClimRelax
2386    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2387      (suggested by G. Forget)
2388    
2389    checkpoint57f_post
2390    o add parameter "baseTime" = model base time = time at iteration zero
2391      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2392      account for baseTime shift
2393    o move Coriolis arrays from PARAMS.h to GRID.h
2394    checkpoint57f_pre
2395    
2396    o mnc-ifying the seaice package
2397    o introduced an alternative length scale calculation for use in the limiting
2398      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2399    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2400    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2401      as well as grad(vort3).  Made it compatible with both approximate form
2402      for the cubed sphere and full form of these gradients.  Added flag
2403      useFullLeith to select between approximate and full form.  
2404    o add "d0" in getcon.F to reduce differences between compilers/platforms
2405      update output.txt of exp. fizhi-gridalt-hs
2406    o change port_rand funtion to allow to set the seed.
2407    o fix obscure MNC bug involving conversion between reals and integers
2408      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2409        new version is now more standards-compliant
2410    o adjoint-related modifications
2411      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2412      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2413      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2414    
2415    checkpoint57e_post
2416    o Adding eddy stress controls a la Ferreira et al.
2417    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2418    
2419    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2420      update output.txt of exp. fizhi-gridalt-hs
2421    o add more "Z" dimensions and associated coordinate vars to MNC
2422    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2423    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2424      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2425      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2426      months and years.  Requires pkg/cal.
2427    o diagnostics: add pickup functionality
2428      - off by default for backwards compatibility
2429      - current version only uses MDSIO -- MNC will be added
2430    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2431    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2432    
2433    checkpoint57d_post
2434    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2435    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2436      output from the diagnostics package
2437    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2438    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2439      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2440    o add coordinate variables to the MNC output from the diagnostics package
2441    o change MNC-flags default value: true when useMNC=TRUE
2442    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2443      the ability (off by default) to read the grid information using MNC
2444    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2445    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2446    o do snap-shot diagnostics at the middle of the time-interval (instead of
2447      at the end).
2448    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2449      new test for AIM with thSIce + slab-ocean
2450    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2451    o move state variable diagnostics to the beginning of the time step ;
2452      (note: still needs some work specially for snap-shot diagnostics)
2453      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2454    
2455    checkpoint57c_post
2456    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2457    o generate new output.txt files on faulks with g77 & the new -ieee option
2458    checkpoint57c_pre
2459    
2460    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2461      update output.txt of exp. global_ocean.90x40x15
2462    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2463      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2464    o add saltFlux(+File) forcing capability with periodicExternalForcing
2465    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2466    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2467    o improvements for the MNC output from DIAGNOSTICS:
2468      - correct handling of the unlimitied dimension
2469      - all dims now have associated coordinate variables
2470      - variables located at U, V, and Corner ("Z") points are now written
2471        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2472        *all* data points are output
2473    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2474    o added pkg/seaice/seaice_monitor.F
2475    o mdsio_readfield.F can now read files visible only to master MPI process.
2476    o pkg/seaice: some test code for ice-modified ocean stress
2477    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2478      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2479      spurious negative numbers for precipitation and humidity.  Will cause
2480      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2481    o pkg/ctrl/
2482      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2483        May be enabled via doPackDiag
2484      *  introduce z-scaling of
2485         + gradient (doZscalePack) and
2486         + control (doZscaleUnpack)
2487    o pkg/mdsio/
2488      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2489      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2490    
2491    checkpoint57b_post
2492    o simplify options in diagnostics_fill arguments (remove weird combinations)
2493    o fix MNC coordinate variables so that they now contain per-face index
2494      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2495      general, EXCH2 grids are only aligned to a "local" coordinate system
2496    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2497    o Implement instantaneous output within pkg diagnostics:
2498      setting a negative frequency in data.diagnostics produces
2499     "snap-shot" output (as opposed to time-average if freq > 0)
2500    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2501      NOTE: change ptracer diagnostics name: use 2 characters to work with
2502            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2503    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2504      becomes the coordinate variable for the 'T' dimension
2505    o add CF-style coordinate variables to MNC
2506      - just a first cut:  numbers are meaningless on the cubesphere and
2507        missing along the T axis but otherwise it works!
2508    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2509    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2510    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2511      this is based directly on what the model compute, so that the content of
2512      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2513    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2514    o clean up build options files for SunOS, in particular
2515      - remove -traditional from xmakedepend
2516      - change -xarch=v9 to -xarch=native for f77
2517      - restore use of make (not gmake)
2518      - add CC=gcc if using g77
2519    o changes per discussion of AM, JMC, & EH3 today:
2520      - move redundant "grid" variables out of "state" -- in preparation of
2521        creating proper CF-style coordinate variables and in recognition
2522        that any/all grid variables can be easily copied (eg. w/NCO) from
2523        the grid files into any of the other NetCDF files
2524      - *always* output grid variables with MDSIO (this will eventually be
2525        changed)
2526      - output MNC grid file if useMNC is true
2527    o every instance of _END_MASTER() has been found and replaced with
2528      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2529      preprocessors
2530    o re-arrange diagnostics pkg initialisation:
2531     - allow each package to extend the available diagnostics list
2532     - add some checking and fix small problems (multi-threaded, ...)
2533     - new S/R diagnostics_fill (replace fill_diagnostics):
2534       look through the short list of active diag. (instead of the long list)
2535       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2536    
2537    checkpoint57a_post
2538    o this set of changes restores TAMC compatibility
2539      tested for global_ocean.90x40x15 adjoint on trough
2540      (what a pain)
2541    
2542    checkpoint57a_pre
2543    o some modifs in tools/build_options for sunos
2544    o call ctrl_pack for ctrl at end for optimcycle=0
2545    
2546    checkpoint57
2547    o add horizontal bi-harmonic viscosity for vertical velocity
2548      - new parameter viscA4W (defaults to viscA4)
2549      - affects only non-hydrostatic code
2550      - to be done: no-slip lateral boundary conditions
2551    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2552    o implement Implicit Vertical advection for pTracers
2553    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2554      (implemented also for implicit vertical diffusion & advection)
2555    o OBCS: extend application of tracer open boundary conditions
2556      to a strip beyond the boundary of width Olx/Oly
2557    o add call monitor to TAF set of required calls (flow directives)
2558      and include in natl_box_adjoint
2559    o untangle a few ifdefs related to cost, ctrl, autodiff
2560      untangel a few ALLOW_ECCO_OPTIMIZATION
2561    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2562      (theta2, salt2 in ecco_cost_weights)
2563    
2564    checkpoint56c_post
2565    o OBCS as control variables
2566      - update ctrl_ad_diff.list, obcs_ad_diff.list
2567      - remove balance of obcs controls from default
2568      - fix index bug nobcs in ctrl_init
2569      - fix dummy fields filen in ctrl_pack
2570      - add dummy weights for obcs
2571    o lsopt: comment out fort.94 output
2572    o optim:
2573      - remove unnecessary header files
2574      - adjusted namelists
2575      - add xerbla.F to Makefile
2576    o exf:
2577      - multiple modifications of exf_check_range
2578      - unit change in exf_init_runoff from [m/year] to [m/s]
2579    o mdsio:
2580      - i/o-vector change debugLevel from debLevA to debLevB
2581    
2582    checkpoint56b_post
2583    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2584      is called from DO_THE_MODEL_IO
2585      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2586      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2587      - clean up PTRACERS_WRITE_TIMEAVE a little
2588    o add another verification experiment that tests both the cfc-pkg and
2589      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2590      reactive tendencies treated inline with regular timestepping
2591    o testreport previously did a lousy job of comparing small numbers, so
2592      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2593      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2594      testreport.
2595    o ptracers_monitor: bug fix for MPI
2596    
2597    checkpoint56a_post
2598    o GCHEM: finish reorganizating the package
2599      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2600        (introduces another 3D-array for each passive tracer, but only if
2601        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2602        gchemTendency is not needed because the timestep is done separately)
2603      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2604      - GCHEM is now---more or less cleanly---separate from PTRACERS
2605      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2606        so clear to me how that should be done in a general way.
2607    o CFC: improve formatting of output in CFC_ATMOS
2608    o PTRACERS:
2609      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2610        that ALL experiments with ptracers enable can be checked. This makes
2611        GCHEM_MONITOR obsolete.
2612      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2613        monitorFreq
2614      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2615    o add PTRACERS (PTR0[1-5]) to testreport output
2616    o exf_check_range:
2617      * default changed to .TRUE.
2618      * will check values for niter0 if debLevA, every timestep if debLevB
2619      * STOP in exf_check_range if 'out of range'
2620      * range chosen generous to allow for potential extema
2621      TBD: a version with stricter range
2622           permitted range would be runtime parameters
2623    o GMredi:
2624      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2625      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2626      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2627    o GCHEM:
2628      - move call to GCHEM_FORCING_SEP, so that it is now called before
2629        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2630      - introduced a useGCHEM runtime flag and applied it everywhere.
2631      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2632        this flag is now only visible within GCHEM-pkg routines.
2633      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2634        be replaced by a 3D array that is computed before thermodynamics; for
2635        this, the tracer ID iTracer had to be included into the parameter list
2636        of ptracers_forcing
2637      - set up forward_step to call gchem_forcing, that will replace
2638        gchem_forcing_int in ptracers_forcing
2639      - cleaning up
2640    o small cleaning of exch2: remove files that are also in eesupp/src
2641    
2642    checkpoint56
2643    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2644    o mnc: cleanup "full" files--fixes out-of-memory problem
2645    o ECCO-GODAE
2646      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2647      * fully merged and updated from SIO code
2648        windstress sign change affects
2649        - exf_inscal_[u/v]stress
2650        - sign of xx_tau[u/v] adjustments
2651        - signs in cost_scat
2652      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2653      * natl_box_adjoint updated and compressed
2654      * 2-level checkpoint switch added
2655        (tested in EXP. 1 of natl_box_adjoint)
2656      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2657    o SVD
2658      * first complete, non-hacked version for SVD calculations
2659      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2660        performed via direct access files admtlm_vector.it????
2661        (via ctrl_[un]pack)
2662      * optimcycle is used for ARPACK iteration counter
2663        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2664      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2665        and add linear transforms where necessary
2666      * controls are initial/final SST, SSS (can be extended; need to check
2667        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2668    o mdsio: filename info to both stderr, stdout
2669    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2670      from sign change
2671    
2672    checkpoint55j_post
2673    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2674      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2675    o add consistent build directories and .cvsignore files to verification
2676    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2677    o make all subroutines 30 or less characters in length for certain older
2678      compilers to work (a thorough search only turns up two routines in
2679      pkg/ptracers)
2680    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2681      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2682    
2683    checkpoint55i_post
2684    o change arrays for total vertical diffusivity (2.D if explicit,
2685      3.D if implicit) ; each ptracer uses its own background value.
2686    o added mnc/NetCDF output capability to ocn_compon_interf
2687      - added bits to verification/cpl_aim+ocn so that it can run on
2688        ITRDA and other clusters without the mpirun "-wd" option
2689    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2690      configuration
2691    o give MNC the ability to create additional files rather than
2692      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2693      - the default is just less than 2GB which is a practical limit
2694        on many systems
2695    o Compute the non-local term using either KPP vertical diffusivity (=default)
2696       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2697    
2698    checkpoint55h_post
2699    o add verification test "vermix"
2700    o remove all the *_ioinc flags and replace with the single global
2701      outputTypesInclusive flag
2702    o allow to set a vertical profile of vertical diffusivity for T & S
2703    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2704    o useMNC moved from data.mnc to data.pkg
2705    
2706    checkpoint55g_post
2707    o Renaming carbon AD experiments to comply with testreport conventions
2708    o Updating adjoint of Held-Suarez hs94.1x64x5
2709    o Fixing directives for non-ECCO forward_step, after ECCO directives
2710      have been fixed to avoid recomp. of do_oceanic_phys
2711      Works well for global_ocean.90x40x15,
2712      but recomp. issue remains for carbon
2713    o Updating adjoint output for natl_box_adjoint after
2714      pkg/ecco has been modified (see taga c55d_post)
2715    
2716    checkpoint55f_post
2717    o rename to timeave_init_fixed
2718    
2719    checkpoint55e_post
2720    o some delicate re-shuffle of store directives to avoid one
2721      extra call of do_oceanic_physics
2722      affects ecco_the_main_loop.F, do_oceanic_physics.F
2723      checkpoint_lev1_directives.h
2724    o NB: this may break global_ocean adjoint temporarily,
2725      but it is clear how to fix it. Will do later, need this now.
2726    
2727    checkpoint55d_post
2728    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2729    o ecco_cost_weights is modified to 1x1 runs
2730    o modifs to allow observations to be read in as
2731      single file or yearly files
2732    o enable to read exf forcing fields as either
2733      single file or yearly files (flag useExfYearlyFields)
2734    checkpoint55d_pre
2735    
2736    o switch between 2-level and 3-level checkpointing
2737    o add ability of MNC to write local and "partial" (eg. 2D slices where
2738      the full 3D field is never actually stored) arrays to NetCDF files
2739      with the correct (that is, the complete multi-dimensional) set of
2740      array indicies
2741      - used in mom_vecinv() to write the diagFreq output
2742      - tested (demonstrated) in verification/aim.5l_cs
2743    o further mnc-ification
2744      - add verification/lab_sea to the list with mnc setups
2745      - fix undefined mnc v-names in cd_code
2746      - add kpp to mnc output (both snapshot and timeave)
2747    o non-hydrostatic code
2748      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2749        in calc_gw.F
2750      - defaults to viscAh
2751      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2752        friction or Leith) in non-hydrostatic mode, as long as there is
2753        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2754    o pkg/cost
2755      extend simple cost functions to treat time mean quantities
2756      (T,U,V) via cost_accumulate_state from cost_tile
2757    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2758        be 2 times larger than the minimum size the advection scheme requires.
2759        now get a perfect conservation of salt in advect_cs test-exp (updated)
2760    o GGL90 (Gaspar's TKE mixed layer)
2761      - add horizontal diffusion of TKE, requires exchanges in
2762        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2763        default. In OPA there is no horizontal diffusion of TKE but the
2764        mixing coefficients are computed from a horizontal average of TKE of
2765        6 points or so. I think that diffusion has a little more physical
2766        justification.
2767      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2768        was in vain)
2769      - mask tke-variable in ggl90_init
2770    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2771    o fix biharmonic diffusion on CS-grid.
2772    o more obcs stuff
2773      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2774        for reading boundary values. This routine is called from
2775        obcs_prescribe_read
2776      - updated obcs_check
2777      - changed sponge layer relaxation parameter units for days to seconds
2778      - turned off sponge layer by default
2779      - changed argument list of OBCS_CALC to myTime+deltaTclock
2780      - fixed about 35 bugs in obcs_external_fields_load
2781    
2782    checkpoint55c_post
2783    o obcs stuff
2784      - new runtime flags useOBCSprescribe, useOBCSbalance
2785      - re-arranged obcs_calc
2786      - moved exf_getobcs to obcs_prescibe_read
2787        obcs_prescibe_read is called after ORLANSKI stuff
2788        and independent of it (executable can contain all).
2789      - updated obcs_check
2790      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2791        These may be necessary only if tangential velocities are
2792        prescribed at OB, not sure, needs testing.
2793    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2794      which simplifies the calls and passes the ifc check-bounds test
2795    
2796    checkpoint55b_post
2797    o add a 2D scalar, Z location, exchange_2 routine.
2798    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2799      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2800      affects advect_cs results (for the wrong reason): update output.txt
2801    o use a more standard discretization for biharmonic viscosity ;
2802     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2803      affects results of dome set-up: update output.txt
2804    o fix gad_advection.F (CubedSphere part), back to version 1.23
2805    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2806    
2807    checkpoint55a_post
2808    o merged code to
2809      * prescribe/read time-dependent open boundaries
2810        (works in conjunction with exf, cal)
2811      * sponge layer code for open boundaries
2812      * each boundary N/S/E/W now has its own CPP option
2813        (healthy for the adjoint)
2814    
2815    checkpoint55
2816    o up-to-date adjoint of previous breaks
2817      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2818      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2819      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2820      - carbon: * remove tr1-related adjoint verification
2821                * add ptracer as control variable
2822    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2823      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2824    
2825    checkpoint54f_post
2826    o in verification/carbin/ remove experiment related to
2827      ALLOW_PASSIVE_TRACER (array tr1 etc)
2828      code_ad/ input_ad/ results_ad
2829    
2830    o add two new packages
2831      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2832        + subject to optimization (memory)
2833      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2834        + subject to reordering (many GOTOs in the original code)
2835        + so far opps is called for every (i,j) point, and then operates in
2836          the vertical; one may want to reorder the scheme in order operate in
2837          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2838          fields)
2839    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2840      - all verification tests compile and run with linux_ia32_g77
2841      - defaults are compatible with current input files--nothing
2842        should change if you were not previously using MNC
2843      - MNC output has been added in numerous places (eg. timeave)
2844        but there are still a few writes not yet do-able with MNC
2845        (this is in progress)
2846      - flags now allow for either/or/both use of MDSIO and MNC and
2847        documentation will soon follow
2848      - numerous small formatting cleanups for ProTeX
2849    o add version info (via BUILD_INFO.h) to MNC and stdout
2850    
2851    checkpoint54e_post
2852    o add two new packages
2853      - pp81 (Packanowski and Philander, 1981), Richardson number and
2854        stratification dependent mixing
2855      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2856      - these scheme operate in a similar manner as KPP (without ghat, of
2857        course), however there is only one diffusivity that is used for both
2858        temperature and salinity (and passive tracers)
2859    o add offline package
2860    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2861      provided by Stephanie Dutkiewicz
2862    o genmake2: add ability to search for C compilers and cleanup test output
2863      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2864    
2865    checkpoint54d_post
2866    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2867    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2868      leading to additional shift by 5 days each year of integration
2869       (i.e. leading to considerable offset over the years)
2870    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2871    o start with no AB and no initial filtering (staggerTimeStep):
2872      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2873    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2874      (external loading & cpl import/export stay in forward_step.F)
2875    o update coupling interface to work with new staggerTimeStep
2876    o change MDSIO ptracers_pickup.
2877    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2878    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2879    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2880    
2881    checkpoint54c_post
2882    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2883      this affects (truncation error) output.txt of test-exp:
2884       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2885    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2886    o change Qnet to always be the net heat flux, (+upward).
2887      affects (truncation error) output of natl_box exp.: updated
2888    o define the max number of passive tracers in PTRACERS_SIZE.h
2889    o start to test mnc routinely in exp0
2890    o add sea-ice loading (sIceLoad) as a new forcing field.
2891    
2892    checkpoint54b_post
2893    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2894       impressive on Altix and Opteron systems)
2895    o diagnostics can now write NetCDF files through the mnc package
2896    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2897    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2898    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2899      affects (truncation error) output of lab_sea & natl_box exp.: updated
2900    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2901    
2902    checkpoint54a_post
2903    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2904    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2905    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2906    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2907      + internal_wave (shift in writing cg2d_ini_res)
2908    checkpoint54a_pre
2909    
2910    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2911      - modified verification/lab_sea and natl_box_adjoint accordingly
2912    
2913    checkpoint54
2914    checkpoint53g_post
2915    o prepare splitting of thermodynamics: store convect.counter in common block
2916    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2917      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2918    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2919    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2920    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2921    o restore adjointability
2922    
2923    checkpoint53f_post
2924    o modifications that affect AIM experiment results (update output.txt):
2925      - no advection of S at top interface Nr (pkg/generic_advdiff)
2926      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2927    o AIM pkg:
2928      - include stability function into surf.Flux derivative relative to Tsurf
2929      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2930    
2931    checkpoint53e_post
2932    o merged cylindrical coord configuration
2933    o added rotating_tank experiment
2934    checkpoint53e_pre
2935    
2936    checkpoint53d_post
2937    o faulks upgraded: re-generate output.txt that have changed:
2938       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2939    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2940    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2941    o added Sadourny discretization of Coriolis
2942      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2943      - re-enabled use of omega3 (useAbsVorticity)
2944    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2945      vector-invariant equations
2946      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2947    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2948      hopefully without new bugs
2949      - still to do: biharmonic friction for non-hydrostatic w
2950    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2951    o regenerated output for global_ocean_ebm (using -ieee)
2952    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2953      of mom_common/
2954      - simple re-arrangement of instructions within computing loop
2955    checkpoint53d_pre
2956    
2957    checkpoint53c_post
2958    o new version of coupler for AIM+thSIce and Ocean models
2959     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2960     - land: change Evaporation of snow
2961     - aim with thSIce: fix bug in snow-precip.
2962    o changes to calc_gw.F
2963     - bug fix for w^2 term near the bottom boundary
2964     - (hopefully) improve the lateral slip boundary condtions for use with
2965        partial/looped cells
2966      - because the bug fix changes two verification experiments anyway (exp5
2967        and plume on slope), change the lateral boundary condition from half slip
2968        to the value of no_slip_sides
2969    o ebm package wasnt quite up to the parallel task. Fixed that.
2970    o Adjoint of EBM package + verification
2971      * TLM OK
2972      * ADM not sufficient accuracy yet (needs further testing)
2973    
2974    checkpoint53b_post
2975    o Commiting new energy balance model to repository
2976      * package is pkg/ebm
2977      * verif. is verification/global_ocean_ebm
2978      * references are in ebm_driver.F
2979    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2980    C        Global thermohaline circulation. Part I:
2981    C        Sensitivity to atmospheric moisture transport.
2982    C        J. Climate 12(1), 71-82
2983    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2984    C        Global thermohaline circulation. Part II:
2985    C        Sensitivity with interactive transport.
2986    C        J. Climate 12(1), 83-91
2987    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2988    C        Destabilization of the thermohaline circulation
2989    C        by atmospheric eddy transports.
2990    C        J. Climate 7(12), 1870-1882
2991    o Will need long integration testing.
2992    checkpoint53b_pre
2993    
2994    o created pkg/mom_common in preparation for variable viscosity code
2995    o renamed and split ini_mnc_io
2996    o pkg/land: only liquid water can diffuse or run-off
2997    o AIM using land: soil wetness availability account for snow
2998    o added printMapIncludesZeros to EEPARMS namelist
2999    
3000    checkpoint53a_post
3001    o restore TAMC compatiility for exf_constants.h
3002      (no usage of _d in .h)
3003    o Additional storing in KPP in an attempt to fix
3004      TAMC problem with adjoint of KPP code.
3005      (no success...)
3006      Identical code works fine with TAF.
3007    o Fixed verification/natl_box_adjoint experiments.
3008      Initial conditions for Experiments 4 and 5 are now
3009      set to "SEAICE_initialHEFF=0", which is more reasonable,
3010      and hence gives results closer to that of Experiment 2.
3011      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
3012    
3013    checkpoint53
3014    o stable checkpoint with up to date adjoint
3015      TLM tests only run for 1st grdchk at the moment. Its unclear if
3016      this is a code problem or a problem with resetting code for g_
3017      variables that is being autogenerated wrong.
3018      Otherwise:
3019       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
3020       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
3021         are both still in chaos following their security messes.
3022    
3023    checkpoint52n_post
3024    o various build (mostly genmake2) changes including:
3025      - ability to build/run more easily within Cygwin and MacOS X
3026      - more complicated Makefiles with a stronger dependence on Gnu Make
3027    o pkg/seaice modifications
3028      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
3029        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
3030        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
3031      - changed proxy for geostrophic velocity and updated
3032        verification/lab_sea/results/* accordingly
3033      - removed ADI dynamic solver from pkg/seaice
3034      - replaced all occurrences of 1/CSTICE or 1/CSUICE
3035        they caused a segmentation fault under certain circumstances
3036      - removed unused field WATR
3037    o bug fix in exf-package:
3038      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
3039         now reflect that.
3040    o small fixes in the cal-package:
3041      - set reference date to first of January for the 'model'-calendar
3042      - failing of cal_CheckDate in cal_FullDate now actually results in a
3043        warning
3044    o small modifications in exf-package to increase flexibility:
3045      - change climtempfreeze from a constant to a runtime parameter that
3046        is specified in data.exf_clim (default = -1.9)
3047      - introduce runtime parameter windstressmax (default = 2.0) that is
3048        specified in data.exf
3049    o fix in pkg/thsice:
3050      - update Evap (Tsf changes) to be consistent with Latent heat flux
3051      - maintain snow precipitation unchanged (even if Tsf >=0).
3052     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
3053    
3054    checkpoint52m_post
3055    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
3056      this does not change any of the results, because myIter=0 in swfrac always
3057      lead to jwtype=2 (the default anyway), but the call makes little sense
3058      as a default
3059    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
3060    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
3061      atmospheric model (AIM) to use it ; add a "slab ocean" component.
3062    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
3063    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
3064    o extending useSingleCpuIO option to work with new exch2 I/O format
3065      - old-style, missing-tile I/O is still accessible by defining CPP
3066        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
3067    o monitor package can write to NetCDF files and/or STDOUT
3068    o fix re-definition bug in MNC_GRID_INIT_ALL()
3069    o doc/api_reference added
3070      - a framework for building an API Reference Manual using all
3071        the "protex" comments embedded in the code
3072      - see pkg/generic_advdiff, pkg/mnc for examples
3073    o MNC:
3074      - make myThid the last argument for all subroutines
3075      - new default for the grid files: NO halos
3076      - add useMNC and other run-time flags
3077      - separate per-file-group handling of the unlimited dimension
3078      - early initialization of MNC w/ flags read at the eeboot stage
3079        and lookup tables set in initialize_fixed
3080      - write all MNC output to a freshly-created directory
3081    o thermodynamics sea-ice (thsice) is now tested with testreport.
3082    o test exp. advect_cs: use the standard cs32 grid ; update output.
3083    o Added functionality to grdchk:
3084      pick global i,j,k position (or nearest wet) where to perform check.
3085    
3086    checkpoint52l_post
3087    o new land formulation:
3088      a) use ground enthalpy as prognostic variable to ensure exact
3089         energy conservation.
3090      b) account for water temperature and for latent heat of freezing
3091         in all processes (rain, run-off, ground storage)
3092      c) compute surface and ground temperature implicitly.
3093    o aim_v23 modification for new land model:
3094      a) Treat separately land / ocean / sea-ice surface fluxes
3095         to allow implicit computation of land & sea-ice surface temp.
3096      b) add snow precipitation.
3097    checkpoint52l_pre
3098    
3099    o fix problem (when 1 tile is empty) in min/max monitor.
3100    o fix bug in timeAve (u,vZetatave in common block)
3101    o no restoring terms under ice for pkg/seaice
3102    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
3103    o bug fix for pkg/seaice pickups
3104    o change MNC call locations and add coordinate attributes
3105    o mask vorticity at the corner ; affects global_ocean.cs output
3106    o fix ini_curvilinear_grid ; test CS experiments with mpi
3107    o aim.5l_cs: modify sea-ice fraction input file ; update output
3108    o exf: Adding simple range check routine for exf fields after read
3109    
3110    checkpoint52k_post
3111    o removed top-level directory "diags"
3112      - we migrated these functions to pkg/timeave a long time ago
3113    o fixed bug introduced in pkg/monitor
3114    o accuracy ctrlprec = 32 insuffient for gradient checks using
3115      averaged fields (I/O via cost_averages)
3116      -> use ctrl.h in active_file*.F to control I/O precision.
3117    o paramter list of CALL ADTHE_MAIN_LOOP
3118    o added initial do_the_model_io to ecco
3119    o set all ...Freq to zero after cost_final
3120      taveFreq, dumpFreq, pChkptFreq
3121    o MAIN and ECCO differentiability restored
3122    
3123    checkpoint52j_post
3124    o fix nchklev in tamc.h for global_ocean...
3125    o Bringing flow and store directives up-to-date
3126    o Really weird thing!
3127      call do_the_model_io from the_main_loop with parameters
3128      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
3129      TAF places a faulty re-call of initialise_varia
3130      after cost_final call which should not be there!
3131    checkpoint52j_pre
3132    
3133    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
3134      error messages
3135    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
3136    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
3137      debug output
3138    o modfied mdsio_writefield.F to handle non-global files under exch2
3139    o update AIM Cubed-Sphere exp (aim.5l_cs):
3140      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
3141    o update AIM Equatorial Channel exp:
3142      use standard aim_v23 pkg and change the SST fields to be more realistic.
3143    o globalFile now works with exch2
3144    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
3145      mon_vort3.F to make exch2 friendly with >1 tile per cube face
3146    o limit timeave output for hi-res integrations
3147    
3148    checkpoint52i_post
3149    o removed CPP_EEOPTIONS.h from verification/*/code
3150    o updated the tiling for global_ocean_pressure
3151    checkpoint52i_pre
3152    
3153    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
3154      the old pkg/aim).
3155    
3156    checkpoint52h_pre
3157    o shortened offending lines in exch2_send_rx?.template
3158    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
3159    o genmake2: add build & execute test for NetCDF code
3160    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
3161      old grid files, moved CPP_EEMACROS.h to pkg/exch2
3162    o added useSingleCPUIO flag to monitor.F and mon_out.F
3163    o added temporary hack for sea-ice dynamics on the cube:
3164      metric terms are ignored and it is assumed that
3165      there is no sea-ice on cube faces 1, 2, 4, and 5.
3166    
3167    checkpoint52f_post
3168    o added exch2 cube routines to pkg/exch2
3169    o modified hs94.cs-32x32x5 to use it
3170    o added new grid files to hs94.cs-32x32x5
3171    checkpoint52f_pre
3172    
3173    checkpoint52e_post
3174    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
3175      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
3176    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
3177      to work with implicit vertical advection and AB ;
3178    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
3179    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
3180     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
3181    checkpoint52e_pre
3182    
3183    o fix bug in impldiff when Nr=1 or Nr=2.
3184    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
3185    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
3186    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
3187      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
3188    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
3189    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
3190    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
3191    
3192    checkpoint52d_post
3193    o re-tiled many expts to allow comparison in multi-processor mode
3194      - updated output accordingly
3195      - changed hs94.128x64x5 to use intial T from file rather than use the
3196        random number generator
3197    o add infrastructure in model routines for fizhi and gridalt packages
3198    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
3199    o changes to permit hi-res, cubed-sphere, configuration
3200      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
3201      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
3202      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
3203        of surface winds for the cube
3204      (A verification experiment, based on global_ocean.cs32x15, but with
3205       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
3206       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
3207       complete with example surface forcing files and matlab scripts to look
3208       at the output and compare it with that of global_ocean.cs32x15.)
3209    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
3210       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
3211       to conform to the common rule.
3212    o check-in the first version of the coupler + interfaces for multi-components
3213       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
3214       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
3215       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
3216       - ocean and atmos. share the same horizontal grid (no interpolation).
3217       - exchanges between component and coupler is done in forward_step
3218    o new verification experiment, cpl_aim+ocn:
3219       coupled ocean - AIM atmosphere on cs32 grid.
3220    
3221    checkpoint52d_pre
3222    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
3223    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
3224    
3225    checkpoint52c_post
3226    o Fixing OPTIONS files for use of exf:
3227      - ALLOW_ECCO not needed
3228      - ECCO_CPPOPTIONS.h should not be included from
3229        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
3230        as has been the case in the past
3231      - All cal/exf related options are currently set in
3232        single header file. Should remain so until we
3233        agree on a consistent new policy.
3234    o Removed all CPP options for cal package.
3235      cal has no more CPP options.
3236    o modified STOREs in GAD_ADVECTION
3237    o corrected key comp. for passkey
3238    
3239    checkpoint52b_post
3240    o new version: "thsice" of thermodynamic sea-ice pkg:
3241     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
3242     - modify fluxes but do not change theta directly;
3243     - light cleaning of bulk_force pkg (still needed with thsice).
3244     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
3245       + output_thsice.txt to test thsice & bulk_force pkgs.
3246    o put back grid & coriolis monitor output.
3247    checkpoint52b_pre
3248    
3249    o call "do_the_model_io" at the beginning (=> dump initial state)
3250    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
3251    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
3252      (need info on NUMBER_OF_PTRACERS)
3253    o missing PTRACERS headers in some routines
3254    o default tamc.h in pkg/autodiff supposed to crash
3255      to ensure proper customization
3256    
3257    checkpoint52a_post
3258    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
3259      - moved surfaceTendencyTice from pkg/seaice to main code
3260      - subroutine FREEZE_SURFACE now limits only surface temperature
3261        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
3262        => new output.txt for global_ocean.cs32x15 & global_with_exf
3263      - keep the old version of FREEZE for backward compatibility;
3264        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
3265      - corresponding modifs for TAF directives
3266    o added surface flux output variables to TIMEAVE_STATVARS
3267    o time-averaged output for pkg/ptracers
3268    o fix problem with ECCO-related divided adjoint
3269      snapshot file was missing some ad-variables,
3270      but no warning issued by TAF
3271    
3272    checkpoint52a_pre
3273    o some bug fixes for #undef REAL4_IS_SLOW
3274    
3275    checkpoint52 = ecco_c52_e35
3276    o after testing adjoints of checkpoint51u_post
3277    
3278    checkpoint51u_post
3279    o this is the post-merge tag of the ecco-branch
3280      (needs another clean checkout and re-testing)
3281    o various natl_box_adjoint configs and results
3282      but no input fields
3283    o obcs adjoint not yet merged!
3284    o adding ECCO global 1x1 and 2x2 degree configs
3285    o updated/extended some store directives for seaice
3286    o pkg/ecco now containes ecco-specific part of cost function
3287    o top level routines the_main_loop, forward_step
3288      supersede those in model/src/
3289      previous input data.cost now in data.ecco
3290      (new namelist ecco_cost_nml)
3291    o in ctrl/ cleaned some cross-dependencies and updated CPP options
3292    
3293    checkpoint51t_post
3294    o this is the pre-merge tag of the ecco-branch
3295    
3296    checkpoint51s_post
3297    o cleanup: removed various obsolete #define-s
3298    o pkg/grdchk
3299      - renamed 'ph-grd 3' to 'grad-res'
3300      - merged from ecco-branch
3301        (remaining bug fixes for obcs gradient checks)
3302      - additional high-precision output for testreport
3303        (grep for 'precision_grdchk_result')
3304    
3305    checkpoint51r_post
3306    o cleaned up or removed CPP_OPTIONS.h files
3307    o updated results for some of the tests to reflect the new
3308      optfiles (-ieee: -O0 instead of -O3)
3309    
3310    checkpoint51q_post
3311    o cd_code:
3312      - moved cd_scheme.F -> cd_code_scheme.F
3313      - separate read_checkpoint from cd_code_ini_vars.F
3314      - separated cd_code part from write_checkpoint
3315      - updated AD_SOURCE, generated .flow
3316      - added CD_CODE_VARS.h to the_main_loop
3317      - Moving cd_code specific store dir.s to pkg/cd_code
3318    o ctrl package totally restructured
3319      - pack/unpack now optional and decoupled from
3320        xx_/adxx_ I/O
3321      - ctrl_pack/unpack cleaned
3322        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
3323      - confined inclusion of AD_CONFIG.h to where necessary.
3324    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
3325    
3326    checkpoint51p_post
3327    o create initial cd_code package
3328      - WARNING: the initialization of fields within packages
3329        is broken because INI_FIELDS (where READ_CHECKPOINT is
3330        called) is called *before* PACKAGES_INIT_VARIABLES.
3331        This seems to be backwards since
3332        1) its important to initially zero the entire field including
3333           the "halo" region
3334        2) zeroing needs to be done *before* reading pickup info
3335           and the pickup call might or might not happen in any
3336           particular run
3337      - this needs an overhaul for R2
3338    o cleanup verification/*/code/GMREDI_OPTIONS.h
3339    o cleanup testreport
3340    
3341    checkpoint51o_post
3342    o bringing AD-related verif's up to date with genmake2
3343      - carbon/
3344      - global_ocean.90x40x15/
3345      - hs.94.1x64x5/
3346      - (front_relax/ )
3347    o (more) consistent directory structure for AD-related verif.'s
3348    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
3349    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
3350    o bug fix in find_alpha.F for MDJWF:
3351      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
3352        change rho -> rho-rhoConst
3353      - replace call find_rho to find_rhonum
3354    o initialisation of rFlx extended to full array (required by TAF)
3355      and shifted to thermodynamics
3356    o removed PTRACERS.h in ptracers routine
3357    o added surfacetendencyPtr to S/R parameter list pracers_forcing
3358    o Correcting initialisations for fVerU, fVerV.
3359    o helping TAF to recognize dependency on kUp for
3360      fVerU, fVerV
3361    o Replacing delZ by delR in pkg/ctrl/
3362    checkpoint51o_pre
3363    
3364    o undid all of cp51 pending some cleanups and discussion
3365    o added the [#include "AD_CONFIG.h"] statement to all files that need
3366       it for adjoint/tl #defines
3367     o re-worked the build logic in genmake2 to support AD_CONFIG.h
3368     o removed tools/genmake since it no longer works
3369    
3370    checkpoint51n_post
3371    o modifications to make FREEZE flux visible to pkg/kpp
3372      - moved surfaceTendencyTice from pkg/seaice to main code
3373      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
3374      - subroutine FREEZE now limits only surface temperature
3375        (this means new output.txt for global_ocean.90x40x15,
3376         global_ocean.cs32x15, and global_with_exf)
3377    o added surface flux output variables to TIMEAVE_STATVARS
3378    
3379    checkpoint51n_pre
3380    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
3381    o added [#include "AD_CONFIG.h"] to all files that use the following
3382      defines:
3383      - ALLOW_ADJOINT_RUN
3384      - ALLOW_TANGENTLINEAR_RUN
3385      - ALLOW_ECCO_OPTIMIZATION
3386    
3387    checkpoint51m_post
3388    o incorporating changes to get TAMC/TAF working in genmake2
3389      - added new TAMC/TAF targets to the Makefile
3390      - various cleanups related to package handling
3391      - these changes should have no impact on the forward model
3392    
3393    checkpoint51l_post
3394    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
3395     - faster algorithm for cal_addtime.F
3396     - higher precision arithmetic, where needed
3397     - pkg/exf *startdate variables changed from calendar date to
3398       model integration time
3399    
3400    checkpoint51l_pre
3401    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
3402    o enable to apply restoring on S & T only in a latitude band.
3403    o update output (external_forcing_surf modif. change truncation errors)
3404       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
3405    
3406    checkpoint51k_post
3407    o change default to: useNHMTerms=.FALSE.
3408     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
3409       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
3410     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
3411        exp1, ideal_2D_oce
3412     - change data file of oceanic exp (leave the results unchanged for now)
3413       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
3414    o set gravitySign automatically according to the vertical coordinate used
3415      (and change sign: back to "logical" value: +1 when R increases downward)
3416    o added an include barrier to the default CPP_OPTIONS.h and
3417      removed the #include "PACKAGES_CONFIG.h" from it
3418    o fix a bug in mom_fluxform (from chk51j_post)
3419    
3420    checkpoint51j_post
3421    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
3422    o adjusted some flow directives (dynamics, thermodynamics)
3423    o added cubed-sphere case to test cost function
3424    o heckpoint_lev?_directives.h now include
3425      pkg-specific directives, whenever those are enabled.
3426    o Moving pkg-specific flow directives to corresponding pkg
3427      Moving pkg-specific differentiation list to corresponding pkg
3428      Moving pkg-specific checkpoint-lev storing to corresponding pkg
3429      ---> conventions are
3430           - pkg_ad.flow
3431           - pkg_ad_diff.list
3432           - pkg_ad_check_lev?_dir.h
3433    
3434    checkpoint51i_post
3435    o merge of the branch-genmake2
3436      - knowingly breaks the older genmake
3437      - automatic generation of all ALLOW_${PKG_NAME} defines
3438      - new testreport supersedes older testscript
3439    o large number of package inclusion and header cleanups
3440    checkpoint51i_pre
3441    
3442    o new output for adjoin of global ocean vector invariant
3443    o fix for checkpoint of thermodynamic seaice and bulk_force
3444    o Steph gchem various cleanups
3445    
3446    checkpoint 51h_pre
3447    o fixed some single quotes
3448    o modify gchem pkg to be more versatile
3449    o modifications to clean up dic pkg
3450    o add pkg/cfc
3451    
3452    checkpoint51g_post
3453    o provide links for ARPACK and ADM*TLM
3454    o start removing verification/vero/
3455    o update AD-related stuff
3456      (in particular some IF-statements in model/src/ routines)
3457    o adding to verification/global_ocean.90x40x15/ adjoint of
3458      vector invariant setup
3459    
3460    checkpoint51f_post
3461    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
3462    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
3463      of tracer Green's fucntions for ocean inversion project.
3464    
3465    checkpoint51f_pre
3466    o Added on-the-fly spatial interpolation capability
3467        "USE_EXF_INTERPOLATION" to pkg/exf.
3468      - This is a temporary Cartesian-grid hack until
3469        the super-duper ESMF coupler becomes available.
3470      - See verification/global_with_exf/README for usage example.
3471      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
3472        flags and modified pkg/seaice accordingly.
3473    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
3474        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
3475        non-local transport term.
3476    
3477    checkpoint51e_post
3478    o pkg/mom_vecinv:
3479      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
3480      - add time-ave diagnostic of vorticity advection.
3481    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
3482    o atmospheric geopotential: - include water vapor effect;
3483                                - use p^kappa in p* scaling.
3484    o land pkg: read initial state from files.
3485    o AIM : add stratospheric drag in the upper level
3486    
3487    checkpoint51d_post
3488    o change function ILNBLNK (=> last non-blank char.) to return zero
3489      (instead of the string length) when the string. char is empty
3490    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
3491    o modif's to restore TAMC compatibility
3492      - avoid "_d" constructs in PARAMETER declarations
3493      - avoid interrupting lines by comment lines
3494    o Use cluster local disks for purely local I/O
3495      vs. globally visible disks needed for ctrl stuff
3496      (merged from ecco-branch)
3497      - new active_file_loc... and mdsio_..._loc routines
3498      - affected packages: autodiff, ctrl, grdchk, mdsio
3499    
3500    checkpoint51c_post
3501    o introducing integer flag debugLevel
3502      - debLevZero: suppress all output
3503      - debLevA: standard
3504      - debLevB: equivalent to current debugMode=.TRUE.
3505    o introducing pathname variable mdsioLocalDir for mdsio
3506      that can be specified at runtime
3507      (relevant for cluster I/O to local disk)
3508    `
3509    >>>checkpoint51b_post
3510    adjoint of ptracers
3511    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3512    o extended state in checkpoint_lev?, etc.
3513    o alternative ctrl/cost with tr1 or ptracer
3514    o new comlev1_bibj_ptracers
3515    o new ptracers.flow
3516    o made ptracers_forcing same as external_forcing_s
3517    o added verification for adjoint with ptracers
3518      - adm. grdchk fail so far
3519      - tlm. grdchk OK
3520      - checked tapelev/comlev recomputations: OK
3521    <<<checkpoint51b_pre
3522    
3523    checkpoint51a_post
3524    o added code for biogeochemistry package
3525      - new pkgs: dic, gchem
3526      - new subroutine in ptracers
3527    o modify code for biogeo packages
3528      - in model/src and pkg/ptracers
3529    
3530    checkpoint51
3531    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3532      - autodiff, ctrl, exf, grdchk, seaice
3533      kept separate packages
3534      - cost, ecco, obcs
3535    o updating verification/internal_wave, verification/lab_sea
3536      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3537    
3538    checkpoint50i_post
3539    o Preparing next differentiable checkpoint and sync
3540      of MAIN vs. ecco-branch
3541      - 1st step: this one is differentiable
3542      - 2nd step: next(! not this) checkpoint will have updated packages
3543                  from ecco-branch)
3544    
3545    checkpoint50h_post
3546    o new package "land": provide surface BC for AIM.
3547    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3548    o AIM: use true log-P extrapolation for near surface temp (= as in
3549        F.Molteni paper) ; update aim.5l_cs output.
3550    o New variable in PARM03 for more flexible pickups
3551    o somewhat cleaned package initialisation sequence for
3552      ctrl/ cost/ ecco/ in packages_... routines
3553    
3554    checkpoint50g_post
3555    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3556      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3557      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3558        made the default because of faster convergence than ADI
3559    
3560    checkpoint50f_post
3561    o exf totally restructured
3562      - replaced all exf_set_ routines by one generic exf_set_gen.F
3563        and made sure it's still differentiable
3564      - split exf_getffields.F into new exf_bulkformulae.F
3565      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3566      - updated adjoint/makefile and relevant verif. accordingly
3567    
3568    checkpoint50f_pre
3569     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3570          + change Evap over land. (update aim.5l_cs output)
3571     o added missing .cvsignores and made uniform across expts
3572     o changed configuration of tidal_basin_2d expt
3573     o added pkg/debug functions for tracing code in fatal crashes
3574     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3575     o new fn in pkg/monitor to stop model if solution grows too big
3576     o removed lots of single quotes from comments
3577    
3578    checkpoint50e_post
3579    o make KPP work with PTRACERS
3580     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3581       nearly a copy of kpp_transport_s
3582     - there is no analogue to SurfaceTendencyS, so I have to use
3583       gPtr(of the surface layer) instead
3584    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3585    checkpoint50e_pre
3586    
3587    checkpoint50d_post
3588    o change kpp output from multiple-record state files to single-record state
3589      files analogous to write_state.F
3590    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3591      analogous to the cg2d-related output.
3592    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3593      so that writing to internal file fn (with length 512) fails.
3594    checkpoint50d_pre
3595    
3596    checkpoint50c_post
3597    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3598    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3599    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3600    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3601    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3602    
3603    checkpoint50c_pre
3604    Merging from release1_p13:
3605    o bug fix for pkg/seaice dynamic solver
3606    o Added SEAICE_initialHEFF to pkg/seaice
3607    
3608    checkpoint50b_post
3609    o store u*,v* in gU,V instead of in guNm1,gvNm1
3610    o in order to put the momForcing out of the Adams-Bashforth:
3611      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3612      to timestep.F
3613    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3614    o re-generate output for highly sensitive test-exp:
3615       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3616    
3617    checkpoint50b_pre
3618    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3619    o corrected CPP option mismatch in exf_Bulk... functions for case
3620      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3621    
3622    checkpoint50a_post
3623    o Bug fix for merging between c50 and KPP.
3624      ikey was passed from thermodynamics to kpp_calc via
3625      common block rather than being recomputed in kpp_calc,
3626      in contradiction with new key itdkey.
3627      New key ikppkey created, and tamc.h headers updated.
3628    
3629    checkpoint50
3630    - 2nd step of merge with ecco-branch:
3631      merge changes in ecco-branch back into main trunk
3632    - bug fix in find_alpha
3633    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3634    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3635    - merged some sliced AD support routines
3636    
3637    checkpoint49
3638    merged from ecco-branch:
3639    o exf:
3640      - Enable initialisation of forcing fields to constant
3641        (runtime) values.
3642      - in exf_getffields.F
3643        Reduce i-/j-loop to interior domain, discarding overlaps.
3644        That also fixes wrong TAF-key computations for key_1, key_2
3645        with bulf formulae.
3646      - exf_init.F modify #ifdef for exf_init_evap
3647      - exf_getffieldrec.F, ctrl_getrec.F
3648        The following INT-usages are not safe:
3649          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3650          fldcount = int(fldsecs/fldperiod) + 1
3651        and were modified.
3652    o autodiff: checkpoint_lev...
3653      - updated storing for bulk formulae (some arrays were missing)
3654      - added state for seaice package
3655      - synchronized with main branch
3656    o DIVA:
3657      Modif.s in
3658      - the_main_loop.F
3659      - the_model_main.F
3660      and added cost_final_restore.F cost_final_store.F
3661      o With these changes, it is possible to fully separate
3662        the first forward run to compute the cost function (mdthe_main_loop)
3663        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3664        into separate model executions.
3665        This enables better tuning of DIVA to given queue sizes.
3666      o Loss of cost function value in consecutive DIVA runs is
3667        fixed by storing to 'costfinal' file.
3668      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3669        beginning/end of adjoint integration is accounted for.
3670      The current changes apply to TAF-1.4.26.
3671      TAF has one remaining bug, requiring one manual change
3672      (see MITgcm manual).
3673    o cal: synchronized between MAIN and ecco-branch
3674    
3675    checkpoint48i_post
3676    o Changes to restore differentiability of code w.r.t. previous tag
3677      (mostly adding new routines to make list and replacing
3678      pressure by totPhiHyd).
3679    o Updated and merged grdchk package
3680      - has both ADM and TLM checks
3681      - works for single- and multi-proc.
3682      - output cleaned
3683      - worked successfully for parallel DIVA
3684    o genmake:
3685      - Adding -platform=SP4
3686      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3687    o Modif. for DIVA:
3688      ctrl_unpack should not be called in intermediate DIVA interval.
3689      (similar thing would apply for active files such as
3690      tbar, sbar, psbar, which should not be reinitialised;
3691      only relevant for ecco-branch)
3692    
3693    checkpoint48h_post
3694    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3695    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3696    o Added SEAICE_initialHEFF to pkg/seaice
3697    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3698    
3699    checkpoint48g_post
3700    --- EOS:
3701    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3702      store total Potential in totPhyHyd for diagnostics & EOS.
3703    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3704    --- Pressure/geopotential gradient:
3705    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3706    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3707      ( changes results of global_ocean_pressure )
3708    o NLFS + z-coord.: add eta*Rho' contribution.
3709    o accurate phiHyd when using interface-W at the middle between 2 centers
3710     ( changes results of ideal_2D_oce )
3711    o includes r* 2nd term in potential gradient.
3712    
3713    checkpoint48f_post
3714    Merging from release1_p12:
3715    o Modifications for using pkg/exf with pkg/seaice
3716      - improved description of the various forcing configurations
3717      - added basic radiation bulk formulae to pkg/exf
3718      - units/sign fix for evap computation in exf_getffields.F
3719      - updated verification/global_with_exf/results/output.txt
3720    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3721      (SBO) core products, including oceanic mass, center-of-mass,
3722      angular, and bottom pressure (see pkg/sbo/README.sbo).
3723    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3724      to avoid negative values in shallow regions.
3725      - updated verification/natl_box/results/output.txt
3726      - updated verification/lab_sea/results/output.txt
3727    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3728    o Added useSingleCpuIO option (see PARAMS.h).
3729    o Updated useSingleCpuIO option in mdsio_writefield.F to
3730      work with multi-field files, e.g., for single-file pickup.
3731    o pkg/seaice:
3732      - bug fix in growth.F: QNET for no shortwave case
3733      - added HeffFile for specifying initial sea-ice thickness
3734      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3735    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3736      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3737    o pkg/seaice:
3738      - adjoint-friendly modifications
3739      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3740    
3741    checkpoint48e_post
3742    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3743    o dynamics: change definition of computational domain & adapt mom_fluxform
3744      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3745    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3746        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3747        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3748        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3749        inverted_barometer solid-body.cs-32x32x1
3750      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3751    
3752    checkpoint48d_post
3753    o in preparation for r*:
3754     a) use pre-computed gradient of hydrostatic potential:
3755        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3756     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3757        => affects results of glob_oce_pressure (different truncation error)  
3758      update output.txt of ideal_2D_oce & global_ocean_pressure
3759    
3760    checkpoint48d_pre
3761    o in preparation for r*:
3762      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3763      pass the 2 comp. of the grad. as arguments to momentum S/R.
3764      but for the moment, only used if it does not change the results.
3765    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3766    
3767    checkpoint48c_post
3768    Modifications in treatment of initial flux forcing controls
3769    to avoid extra storing of flux fields.
3770    
3771    checkpoint48c_pre
3772    o Added tidal_basin_2d experiment (currently 1D!)
3773    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3774    
3775    checkpoint48b_post
3776    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3777     (modification to pressure gradient not yet implemented)
3778    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3779      (for U & V) that are used for vertical advection of momentum.
3780    
3781    checkpoint48a_post
3782    o In preparation for r*, use temp. array to compute vertical transport
3783       in flux-form momentum pkg. => change results of few test-exp.
3784      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3785                        lab_sea, natl_box & plume_on_slope
3786    
3787    checkpoint48
3788    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3789    
3790    checkpoint47j_post
3791    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3792    o moved adexch from forward_step to addummy_in_stepping
3793    o added exch in ctrl_map_...
3794    o aveFreq.=0. at end of cost_final to avoid overwrite in
3795      reverse checkpointing loop
3796    o Yet more changes in gmredi:
3797      * adgmredi_calc_tensor
3798        avoiding all recomputation of gmredi_slope_limit
3799      * adgmredi_x/y/rtransport
3800        added flag for excessive storing to avoid recomp. of
3801        u/v/rtans, dTdx/y/z
3802        -> this is not really necessary and very memory-consuming
3803      * adgmredi_slope_psi:
3804        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3805      * gmredi_slope_limit
3806        re-activated full calculation of taperfct for case 'ac02'
3807    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3808    
3809    checkpoint47i_post
3810    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3811    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3812      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3813    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3814    o gmredi: fix few bugs.
3815    
3816    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3817    This will be a good checkpoint to plug into the ecco-branch.
3818    o few modif.'s to get latest version adjointed
3819      (mainly kick out code in ini_linear_phisurf)
3820    o modif's to run adjoint with exactConserv
3821    o case GM_BOLUS_ADVEC should be cleaned
3822      S/R gmredi_slope_psi should be cleaned
3823    o verification/carbon now has exactConserv=.TRUE.
3824    
3825    checkpoint47g_post
3826    o time-average AIM output: becomes independent from statvars time-average
3827      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3828    o After TAF bug fix:
3829      Tested adjoint of gmredi package.
3830      Tests were done with checkpoint47 rather than with latest
3831      checkpoint47f_post since the latter is broken for the adjoint
3832      verification/carbon/ contains both ADM and TLM gradient checks.
3833    Here they are, before they get changed/lost/stolen.
3834    Mostly modif.'s to fix numerical sensitivities.
3835    Gradient checks OK for
3836    - GM_taper_scheme:
3837      * clipping
3838      * ac02
3839      * linear
3840      * glw91
3841      * dm95
3842      * ldd97
3843    - GMREDI_OPTIONS:
3844      * GM_VISBECK_VARIABLE_K
3845      * GM_NON_UNITY_DIAGONAL
3846      * GM_EXTRA_DIAGONAL
3847      * GM_BOLUS_ADVEC
3848    in conjunction with data.gmredi parameters to be checked in
3849    in a few minutes under verification/carbon/code/
3850    
3851    checkpoint47f_post
3852    Merging from release1_p10:
3853    o modifications for using pkg/exf with pkg/seaice
3854      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3855        and SEAICE_EXTERNAL_FLUXES
3856      - pkg/exf CPP options EXF_READ_EVAP and
3857        EXF_NO_BULK_COMPUTATIONS
3858      - usage examples are Experiments 8 and 9 in
3859        verification/lab_sea/README
3860      - verification/lab_sea default experiment now uses
3861        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3862    
3863    checkpoint47e_post
3864    o created a tag prior to creating a branch
3865    
3866    checkpoint47d_post
3867    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3868      at the bottom boundary had an erroneous half slip boundary condition
3869    o added bottom drag and no slip boundary condition capabilities to
3870      oceanic pressure coordinates code
3871    o added new verification experiment global_ocean_pressure, this experiment is
3872      also described in the tutorial section of the manual
3873    checkpoint47d_pre
3874    
3875    checkpoint47c_post
3876    o Added a verification experiment for a global cubed-sphere ocean run
3877      -  verification/global_ocean.cubed32x32x30
3878      -  uses pkg/therm_seaice and pkg/bulk_forcing
3879    
3880    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3881    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3882      when using P-coordinate; only implemented for atmospheric config.
3883    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3884      NOTES: requires option NONLIN_FRSURF to be "#define".
3885    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3886    
3887    checkpoint47b_post
3888    Merging from release1_p9:
3889    o pkg/seaice
3890      - removed GOTO's and added taf directives
3891      - double precision constants to reduce the g77 (Linux)
3892        to F77 (SGI) differences reported in release1_p8
3893    o tools/genmake
3894      - added SGI options
3895    o verification/testscript
3896      - updated to that of checkpoint47a_post
3897    o verification/global_ocean.90x40x15/input/eedata
3898      - modified for SGI f77 compatibility
3899    o verification/lab_sea
3900      - added description of sea-ice model
3901      - added missing matlab routines
3902      - added test of thermodynamics parallelization
3903    
3904    checkpoint47a_post
3905    o new pkg: aim_v23
3906     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3907       for now, keep the same surface forcing as before.
3908     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3909     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3910     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3911    o add diagnostic of surface correction term in monitor output
3912    
3913    o bulk_force and therm_seaice
3914    - Two packages:  bulk_force (Bulk forcing)
3915      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3916    - Earlier integration from Stephaine Dutkiewicz
3917      and Patrick Heimbach.
3918    - Two ifdef statements for compile time,
3919       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3920    
3921    checkpoint47
3922    differentiable version of checkpoint46n_post
3923    o bug fix in quasihydrostaticterms
3924    o * "clean" adjoint code (in terms of extensive recomputations)
3925        can now be obtained for all GMREDI options (i.e. for
3926        - GM_VISBECK_VARIABLE_K
3927        - GM_NON_UNITY_DIAGONAL
3928        - GM_EXTRA_DIAGONAL
3929        - GM_BOLUS_ADVEC )
3930      * However, wrong gradient check problem remains unsolved.
3931      * New CPP options have been introduced for different
3932        tapering schemes
3933    o external_fields_load now part of differentiation list
3934    o pressure needs multiple storing;
3935      would be nice to have store_pressure at beginning or
3936      end of forward_step, e.g. by having phiHyd global (5-dim.)
3937      (NB: pressure is needed for certain cases in find_rho,
3938      which is also invoked through convective_adjustment).
3939    o recomputations in find_rho for cases
3940     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3941    o #define ATMOSPHERIC_LOADING should be differentiable
3942    o ini_forcing shifted to begining of initialise_varia
3943    o Incorporating QNVS line search routines into MITgcm
3944      (this is separate code, and therefore not under pkg)
3945      lsopt/, optim/
3946    o Updated verification/carbon/
3947      - #define GM_VISBECK_VARIABLE_K
3948      - GM_taper_scheme    = 'ldd97'    
3949    
3950    checkpoint46n_post
3951    Merging from release1_p8:
3952    o verification/natl_box:
3953      updating new external_fields_load routine
3954    o New package: pkg/seaice
3955      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3956      The sea-ice code is based on Hibler (1979-1980).
3957      Two sea-ice dynamic solvers, ADI and LSR, are included.
3958      In addition to computing prognostic sea-ice variables and diagnosing
3959      the forcing/external data fields that drive the ocean model,
3960      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3961      The implied surface heat flux is then stored in variable
3962      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3963      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3964      non-local transport term.  Because this call precedes model
3965      thermodynamics, temperature under sea-ice may not be "exactly" at
3966      the freezing point by the time theta is dumped or time-averaged.
3967      N.B.: fairly large differences in accuracy occur across
3968            different platforms/compilers; comparison between
3969            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3970            generated output gives:
3971       T           S           U           V
3972      C D M    c        m  s        m  s        m  s        m  s
3973      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3974      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3975      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3976    
3977      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3978    o GAD:
3979      - generated new common blocks to account for call of
3980        same gad routines with differing traceridentities
3981        (needed to modify tracerIdentity indices in GAD.h)
3982      - generated separate common blocks for case useCubedSphereExchange
3983        (Department of Futurology)
3984      - parameter lists to gmredi_?transport: added tracerIdentity
3985      - added new key indices to tamc.h
3986    o external_fields_load:
3987      - added this routine to TAF list
3988      - needed to make some common blocks global and additional storing
3989        along the same lines as exf package (checkpoint_lev?_directives.h)
3990    o exf:
3991      updated external forcing package
3992      - bug fixes carried over from ecco-branch
3993        (missing OBCS_OPTIONS.h in two routines)
3994      - enable easy to use "no forcing".
3995      - added exf I/O for atmospheric loading
3996      - added exf I/O for runoff data
3997      - transfered scaling between exf <-> MITgcm to exf namelist
3998    o Adding new verification experiment global_with_exf.
3999      This verification experiment is almost identical to the
4000      global_ocean.90x40x15 experiment, except that it uses
4001      the exf (and cal) package instead of the
4002      external_fields_load routine (cf README file).
4003    
4004    checkpoint46m_post
4005    o modified testscript to return -- when there are no lines of "%MON" output
4006    o added new flag "quasiHydrostatic" for QH mode
4007      and new routine quasihydrostaticterms()
4008    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
4009      New routine: mom_u_coriolis_nh()
4010    o fixed sign of non-hydrostatic metric terms in u and v equations.
4011      Depend on correct sign of gravitySign.
4012    o added work.pc* to .cvsignore in aim directories using ifc
4013    o introduced flag for controllin non-hydrostatic metric terms
4014    o removed gravitySign from PARM04
4015    o switched to g77/ifc from pgf77 in aim experiments
4016    
4017    checkpoint46l_post
4018    o made convective adjustment work with pressure coordinates:
4019     - changed the direction of k-loop in convective_adjustment.F for the
4020       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
4021     - adjusted the reference pressure k-index in convective_adjustment.F
4022     - adjusted the convection condition in convect.F (in analogy to
4023       calc_ivdc.F)
4024     - convective_adjustment no longer computes anything on the halos
4025     - removed the warnings about negative salinity from find_rho.F and
4026       find_alpha.F; instead the new routine look_for_neg_salinity, called
4027       at the beginning of find_rho, find_alpha, and find_beta, does a
4028       check of the entire slice, if CPP-option
4029       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
4030    checkpoint46l_pre
4031    
4032    checkpoint46k_post
4033    o fixed the verification/global_ocean.90x40x15 experiment:
4034     - new bathymetry (the world according to A., JMC, and M.)
4035     - new initial fields and forcing fields (*.bin files)
4036     - new POLY3.COEFFS (for the next release one should switch to a full
4037       equation of state: JMD95P or MDJWF)
4038     - fixed several errors and redundancies in the data file
4039     - experiment uses looped cells
4040     - added matlab directory with diagnostic scripts for plotting of output
4041    
4042    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
4043     - read AIM physics parameters from a file (data.aimphys)
4044     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
4045    
4046    checkpoint46j_post
4047    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
4048    o move wVel computation at the end of the time step, in S/R integr_continuity
4049    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
4050    o update timeave pkg for wVel diagnostic.
4051    checkpoint46j_pre
4052    
4053    checkpoint46i_post
4054    o Clean up AIM package (and keep the results unchanged):
4055      include CPP_OPTION and use IMPLICT NONE in all routines ;
4056      declare all the variables _RL ; use _d 0 for all numerical constants.
4057      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
4058    
4059    checkpoint46h_post
4060    o cleaned up the use of rhoNil and rhoConst.
4061      - rhoNil should only appear in the LINEAR equation of state, everywhere
4062        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
4063        and the dynamical equations are all divided by rhoConst
4064    o introduced new parameter rhoConstFresh, a reference density of fresh
4065      water, to remove the fresh water flux's dependence on rhoNil. The default
4066      value is 999.8 kg/m^3
4067    o cleanup up external_forcing.F and external_forcing_surf.F
4068      - can now be used by both OCEANIC and OCEANICP
4069    checkpoint46h_pre
4070    
4071     Added code to convert surface volume flux (fresh water) into
4072     a mass flux when using P coordinates in the ocean (OCEANICP).
4073     Note: It assumes you have set rho0=rhoConst=density of fresh water.
4074    
4075    checkpoint46g_post
4076    o Include a new diagnostic variable phiHydLow for the ocean model
4077      - in z-coordinates, it is the bottom pressure anomaly
4078      - in p-coordinates, it is the sea surface elevation
4079      - in both cases, these variable have global drift, reflecting the mass
4080        drift in z-coordinates and the volume drift in p-coordinates
4081      - included time averaging for phiHydLow, be aware of the drift!
4082    o depth-dependent computation of Bo_surf for pressure coordinates
4083      in the ocean (buoyancyRelation='OCEANICP')
4084      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
4085        Theta, Salinity, and Pressure in the parameter list. This routine is
4086        presently contained in find_rho.F. This routine does not give the
4087        correct density for 'POLY3', which would be a z-dependent reference
4088        density.
4089    o cleaned up find_rho
4090      - removed obsolete 'eqn' from the parameter list.
4091    o added two new verification experiments: gop and goz
4092      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
4093    checkpoint46g_pre
4094    
4095    checkpoint46f_post
4096    o Enable tangent linear (forward mode) gradient checks:
4097      - extended active file handling to g_... files
4098      - added TANGENT_SIMULATION to theSimulationMode
4099      - extended grdchk package accordingly
4100    o added tangent linear setup in verification/carbon/code_ftl
4101    o added adjoint setup in verification/front_relax/code_ad
4102    
4103    checkpoint46e_post
4104    o Added new equation of state -> MDJWF
4105      - EOS of McDougall et al., 2002, JAOT, submitted
4106      - caveat: the equation of state is only valid for a smaller (more
4107        realistic?) range of values than JMD95P/Z and UNESCO
4108      - added masks to the calculation of pressure in store_pressure
4109      - added more check values for density in check_eos (ini_eos.F), some of
4110        the old check values are out of the range of the MDJWF-eos, so don't
4111        expect perfect matches for those
4112    checkpoint46e_pre
4113    
4114    checkpoint46d_post
4115    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
4116      'OCEANICP', also initialised field pressure correctly in ini_eos in the
4117      case of pressure coordinates. eosType='JMD95Z' in
4118      combination with buoyancyRelation='OCEANICP' now causes an error.
4119    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
4120      in find_alpha/beta.
4121    checkpoint46d_pre
4122    
4123    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
4124      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
4125    
4126    checkpoint46c_post
4127    o Changes necessary for ocean in p-coordinates
4128     -  Added new buoyancy relation = 'OCEANICP'
4129     -  Added new parameters = gravitySign (this used to be contained inside
4130        the factor dRdZ which I added when we first switched to R coordinates).
4131     X GM/Redi is not compatible (yet)
4132     X bottom drag and no-slip need to be debugged.
4133    checkpoint46c_pre
4134    
4135    checkpoint46b_post
4136    o Added new equation of state -> JMD95Z and JMD95P
4137      - EOS of Jackett and McDougall, 1995, JAOT
4138      - moved all EOS parameters into EOS.h
4139      - new routines ini_eos.F, store_pressure.F
4140    o Added UNESCO EOS, but not recommended because it requires
4141      in-situ temperature (see JMD95)
4142    o Modified formatting for knudsen2.f in utils/knudsen2 and added
4143      unesco.f to be used with POLY3
4144    checkpoint46b_pre
4145    
4146    checkpoint46a_post
4147    o Added (atmospheric) pressure loading
4148      - new field in FFIELDS.h, etc...
4149      - new cpp flag ATMOSPHERIC_LOADING
4150    o Changed hFacC to _hFacC in calc_phi_hyd.F
4151    o Added SHORTWAVE_HEATING to some files for consistency
4152    checkpoint46a_pre
4153    
4154    checkpoint46
4155    further merges from release1_p5
4156    o new ctrl package
4157      - adopted from ECCO environment to enable optimization
4158      - added Eliassen Palm fluxes to controls
4159    o added Eliassen Palm flux controls to gradient check package
4160    o cost package
4161      - Compatible with new ctrl package
4162      - added Eliassen Palm cost hooks
4163      - modif's of existing cost functions
4164    o Adjoint-related bug fixes in kpp:
4165      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
4166      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
4167    o autodiff package
4168      - flow directives:
4169        + new for S/R do_the_model_io
4170        + enhanced for S/R checkpoint
4171        + new gmredi.flow
4172      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
4173        disable adcommon.h/g_common.h by default.
4174      - fixed problem for adjoint of global_max
4175    o modified verification/carbon/
4176    o New setup for adjoint of global_ocean
4177    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
4178    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
4179    o incorporated hooks for sponge layer code (external_forcing.F)
4180    
4181    checkpoint45d_post
4182    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
4183    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
4184      (affects plume_on_slope "cg2d" output)
4185    o add new parameter deltaTfreesurf for free-surface time stepping
4186    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
4187    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
4188    o change phiMin in exp1 (to agree with documentation)
4189    o add new flags:
4190     - T,S forcing inside/outside Adams-Bashforth
4191     - turn off temp,salt advection and/or forcing
4192     - for each tracer, define internal flag for multiDimAdvection & A-B
4193    o monitor: change definition of KE to check conservation of Energy
4194    
4195    checkpoint45c_post
4196    o Removed f90 comments ("!")
4197    o Modified initialisations to enable exf package for MITgcm
4198      (without invoking ECCO_PACKAGE).
4199    o modifications to gradient check package (Martin Losch)
4200      - enable centered differences
4201      - modified format of standard output
4202    
4203    checkpoint45b_post
4204    o cleaned exchange calls in cg2d
4205    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
4206    o included CPP option SINGLE_LAYER_MODE in thermodynamics
4207      to configure barotropic setup (Martin Losch)
4208    o moved some initialisations within bi,bj loop in dynamics
4209      (TAF flow dependency)
4210    o in initialise_varia, moved call packages_init_variables
4211      before convective_adjustment_init
4212      (corresponding adjustment of TAF tape initialisation).
4213    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
4214    
4215    checkpoint45a_post
4216    o compute Rho over the whole domain (extend iMin,jMin indices)
4217    o specific exchange for X-slice domain (case Ny=1)
4218    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
4219    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
4220    
4221    checkpoint44h_post = checkpoint45
4222    o Fix to restore differentiability:
4223      place at which packages_init_variables is called in
4224      initialise_varia is crucial for reverse control flow.
4225    o modifications in GMRedi to enable stable adjoint
4226      (corresponding modif's in thermodynamics, dynamics)
4227    o added missing hook for sponge layer code in external_forcing
4228    o modified test cost functions
4229    o storing in gad_advection (plus removal of write(0,*)!
4230    o missing headers TR1.h added in convective_adjustment routines
4231    o errorMessageUnit set non-equal zero in eeboot
4232      (conflict on some platforms, e.g. IBM SP3)
4233    o modified carbon verif.
4234    
4235    checkpoint44h_pre
4236    o vertical grid option: allow to put the Interface at the middle between
4237      2 cell-centers ; replace delZ in pkg/kpp by drF.
4238    o GM Advective form: Tracers are advected using the residual transport (=
4239      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
4240    
4241    checkpoint44g_post
4242    o fix surface correction term in multiDimAdvection (affects plume_on_slope
4243      results) ; ifdef missing in thermodynamics.F
4244    
4245    checkpoint44f_pre,checkpoint44f_post
4246    o added PTRACERS package
4247      This allows an arbitrary number of passive tracers to be integrated
4248      forward simultaneously with the dynamicaly model.
4249      + Implemented so far:
4250        - basic forward algorithm (time-stepping, advection, diffusion, convection)
4251        - I/O and checkpointing
4252        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
4253      + Not implemented so far:
4254        - KPP
4255        - OBCS
4256      + No specific example supplied (yet) but global_ocean.90x40x15 has the
4257        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
4258        line in data.pkg.
4259      + This package is disabled by default since it increases storage.
4260    
4261    
4262    o testscript: added -cleanup option
4263    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
4264                 b) enable to filter 2D fields.
4265    
4266    checkpoint44e_pre,post
4267    o re-wrote convective adjustment to use pre-calculated weights
4268      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
4269      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
4270      Original calls to convect() still in place.
4271    
4272    chkpt44d_pre,post
4273    o added missing EXCLUDE_MONITOR flags
4274    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
4275      (incompatible typ in MIN/MAX expressions caused problems
4276      on IBM SP3)
4277    o in genmake added variable MAKEDEPEND
4278      plus resetting for case SunOS
4279    o added timer_stats.c routine for IBM SP3
4280    o removed variables in dynamics
4281    !!! I forgot to create tag chkpt44d_pre !!!
4282    !!! But chkpt44d_pre = chkpt44c_post    !!!
4283    
4284    o real fresh water flux implemented with non-linear free-surface.
4285    
4286    chkpt44c_pre,post
4287    o few fix (mask in shap_s2, EmPmR in external_field_load,
4288      USE_NATURAL_BCS in solve_for_P);
4289    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
4290    
4291    checkpoint44b_pre/_post
4292    o merge of relevant stuff from the ecco-branch:
4293      - genmake: removed $S64 overwrite for case SunOS
4294      - pkg/exf: update and corrections for field swapping and obcs
4295      - pkg/ecco: parameter lists for the_model_main, the_main_loop
4296                  harmonized between ECCO and MITgcm
4297      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
4298                      updated checkpointing_lev... lists for obcs
4299      - model/src: minor changes in forward_step, plot_field
4300                   added directive for divided adjoint in the_main_loop
4301      - pkg/mdsio: added mdsio_gl_slice
4302    
4303    o check parameters & config (chkpt44a_pre,post)
4304    o OBC and NonLin_FrSurf.
4305    
4306    checkpoint44
4307    o fix bug in mom_vi_del2uv
4308    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
4309    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
4310    o update AIM experiments (NCEP input files)
4311    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
4312    o added some stuff for AD
4313    
4314    checkpoint43
4315    o added two new advection tests
4316    o added global 4x4 degree ocean test
4317    o added test of H&S94 with free surface on cube
4318    o some final mods for gradient check, adjoint,...
4319    
4320    checkpoint42
4321      Fixed AD-related problems:
4322    o Store directives up-to-date with re-arranged Adams-Bashforth
4323      (mainly thermodynamics.F)
4324    o New store directives for multi-dim. advection schemes
4325      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
4326      * new common block and key passkey
4327      (mainly gad_advection.F)
4328    o Modified store directives for split of dynamics/thermodynamics
4329      for the case ALLOW_KPP
4330    o Cleaned argument list for timestep_tracer.F
4331    
4332    checkpoint41
4333    o re-formatted/added comments in prologues of key subroutines
4334      to work with protex
4335    
4336    checkpoint40
4337    o moved calc_gs, calc_gt and calc_tr1 back to model/src
4338    o added FLT (floats) package from Arne along with demo. experiment
4339    o re-arranged Adams-Bashforth scheme for tracers to allow easier
4340      implementation of forward-in-time forcing terms
4341    o more mods for non-linear free-surface including new variable
4342    o modified multi-dim method to work on cube
4343    o bug fix in KPP (from DM)
4344    
4345    checkpoint40pre9
4346    o added DST advection schemes
4347    o fix MPI bug on SGI's
4348    o modifications for non-linear free-surface
4349    o fixed conditionals for fixed flow/passive tracer only mode
4350    o added tension/strain form of stress tensor
4351    o changes to commenting of arguments for TAF/TAMC
4352    o added/updated many matlab scripts
4353    o added multi-dimensional advection method for tracers
4354      
4355    checkpoint40pre8
4356    o new package rw/
4357      Added method for dumping intermediate local arrays:
4358      mdsio_writetile - same as mdsio_writefield except works from inside
4359                        bi,bj loop
4360      mdsio_writelocal - same as mdsio_writetile except works for local
4361                         arrays
4362      write_local_r? - higher-level wrapper for mdsio_writelocal
4363      Controlled by diagFreq. Defaults to zero (ie. no dumps)
4364      Example given at end of mom_vecinv.F that dumps some local arrays.
4365    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
4366      control flux-form versus vector invariant code.
4367      Switch is runtime flag vectorInvariantMomentum (defaults to false)
4368      or genmake -DISABLE ...
4369    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
4370      (additional storing is now needed for case vecinv;
4371      currently nothing implemented to switch this storing off
4372      in case fluxform is used since no CPP flag available).
4373    
4374    checkpoint40pre7
4375    o bug fix in dynamics.F
4376      calc_viscosity called before k=1,Nr loop.
4377    o added some #ifdef's ALLOW_PASSIVE_TRACER
4378    o cleaned initialisations in ctrl_map_ini
4379      related to TAF
4380    
4381    checkpoint40pre6
4382    o split dynamics into thermodynamics & dynamics
4383    o corresponding split of calc_diffusivity into
4384      calc_diffusivity, calc_viscosity
4385      (kpp_calc_diff, kpp_calc_visc).
4386    o Added diffkr, kapgm to control variables
4387    o bug fix in gmredi_slope_limit for ldd97
4388    
4389    checkpoint40pre5
4390    o proper initialization of Adams-Bashforth time stepping
4391      + uses forward step for very first step of model (iter=0)
4392    o re-generated *all* output since almost all output is modified by this
4393      change (sorry but we've been putting this one off for about 2 years)
4394      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
4395        *not* regenerated since they are already out of date and I don't
4396        want to create the impression that they are suddenly working.
4397    o removed KAP stuff for DEC's
4398    o modified/added many .cvsignore files in */code and */input
4399    o added new expt "solid-body.cs-32x32x1"
4400      + this uses an alternative form of ini_curvilinear_grid.F which
4401        is not necessarily any better than the current one...
4402    
4403    checkpoint40pre4
4404    o added re-initialisations of utrans,vtrans,rtrans in
4405      calc_common_factors which are crucial for TAF.
4406    o extended iMin,jMin range for calc_common_factors,
4407      calc_diffusivity
4408    o added option ALLOW_PASSIVE_TRACER
4409    o a few minor updates and fixes
4410    
4411    checkpoint40pre3
4412    o created calc_gtr1.F for gad package
4413    o split the_main_loop and re-introduced forward_step
4414    o some recomputations of nIter0 for TAMC
4415    
4416    checkpoint40pre2
4417    o Updated to latest branch of AJA, JMC
4418    o Added gradient check package
4419    o Added routines for passive tracer handling
4420    o Added carbon sequestration sensitivity experiment
4421    
4422    checkpoint39
4423     o Modifications and fixes to support TAMC
4424       (mainly missing or wrong directives)
4425     o Corrected common blocks when fooling TAMC to produce adjoint I/O
4426       in addummy_in_stepping
4427     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
4428     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
4429     o Included following packages:
4430       cal: calendar
4431       exf: external forcing
4432       ecco: essential routines to control use of cal, exf
4433             (NB: this is not the full ECCO environment)
4434     o disabled some packages by default in genmake
4435    
4436    checkpoint38
4437     o see notes_c37_adj.txt
4438     o corrected wrong layer index in external_forcing_t
4439     o replaced the_main_loop/forward_step by the_main_loop
4440     o removed forceoutput from write_state
4441       (replaced criteria for initial/final state)
4442     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
4443    
4444    checkpoint37
4445     o mdsio.F routine split and packaged in pkg/mdsio
4446       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
4447        used unless genmake -disable=mdsio)
4448     o allow a more precise surface-geopotential gradient for the atmosphere
4449       taking into account the change in space of Alpha (=1/rho) at the surface.
4450     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
4451       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
4452     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
4453       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
4454       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
4455     o Time-Average diagnostics defined as a pseudo package "timeave".
4456     o pickup files : old pickup (before c35) did not work with new code (c35
4457       and after) unless activating 2 commented lines in initialise-varia.
4458     o Non-Hydrostatic pickup file Pb fixed.
4459     o bug with Rigid-lid version (since c35) fixed.  
4460    
4461    checkpoint36
4462     o implement Crank-Nickelson barotropic time-stepping
4463     o recover Time-Average diagnostics
4464     o fix Pb in checkpoint (PR#19)
4465     o AIM become a standard package ; clean unused CPP_kees
4466    
4467    checkpoint35
4468     o subtantial rewrite of dynamics.f
4469     o allows staggered time-stepping
4470     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
4471     o added bottom drag (linear + quadratic)
4472    
4473    checkpoint34
4474     o Modified exchange routines for correct reverse simulation.
4475     o Added verification output to comply with bug fix in impldiff.F
4476       as of c33 (exp2, natl_box).
4477     o Corrected store directives in dynamics.F
4478     o Corrected array boundaries in impldiff.F
4479     o Corrected array dimensions in gmredi.
4480       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
4481     o Added routine GLOBAL_SUM_INT to global_sum.F
4482     o Added mdsio_gl.F for ECCO purposes.
4483    
4484    checkpoint33
4485     o Fixed bug in lower BC in impldiff.F
4486     o Fixed confusion about units of forcing arrays in FFIELDS.h
4487       namely Fu,Fv,Qnet,Qsw,EmPmR:
4488       - Removed verification/natl_box/code/external_fields_scale.F
4489         (did not differ from that in model/src)
4490       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
4491         (see FFIELDS.h for description)
4492       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
4493         kpp_calc.F and kpp_transport_t.F
4494       - Removed model/src/external_fields_scale.F and calls to it
4495       - verification/natl_box uses flux data with "atmospheric" sign so
4496         a special version of external_fields_load.F is used to
4497         change the data as it's read in. This way, the arrays
4498         have the right units and signs at all times tha a user could
4499         possibly use them.
4500     o Corrected genmake to delete a temporary file during configuration
4501    
4502    checkpoint32
4503     o Scaling of forcing fields moved from external_forcing.F to
4504       external_fields_scale.F, called directly after loading fields.
4505     o Surface relaxation terms added to surface tendency fields in
4506       extra subroutine.
4507     o impldiff.F changed to avoid storing by TAMC of huge intermediate
4508       fields.
4509     o Changes in GMRedi to comply with packaging structure.
4510     o Modifications and bug fixes in KPP package.
4511     o Verification experiment for KPP added (verification/nat_box/)
4512    
4513    checkpoint31
4514     o Packages interface brought in line with defined standard
4515       -> new routines packages_...F
4516       -> changes in initialise_fixed.F, initialise_varia.F
4517       -> enables initialisation interface for ECCO package
4518     o Rescaling of external forcing fields immediately after read
4519       (removed from external_forcing.F)
4520       -> new: surface_fields_scale.F
4521       -> affects ini_foorcing.F, external_fields_load.F
4522     o Computation of surface tendencies before tendency updates.
4523       -> new: external_forcing_surf.F
4524     o Change of variable names useGMRedi, useKPP, useECCO
4525     o Further changes in dynamics.F, impldiff.F for TAMC
4526     o Tested for experiments 0, 2, 4.
4527       - not yet tested for GMRedi.
4528       - not yet tested for KPP.
4529    
4530    checkpoint30
4531     o Updates for OBCs
4532     o New experiment for test OBCs (internal_wave)
4533     o New output.txt in verification/exp4/results/
4534     o Updates for KPP: calculation of viscosity corrected, new variables
4535       kpp_dumpFreq and kpp_taveFreq
4536     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
4537       and entry for T90 in genmake
4538    
4539    checkpoint29
4540     o packaged KPP and GM/Redi
4541    
4542    checkpoint28
4543     o Corrected initialization of hFacMin for difference vertical coordinates
4544     o Modified calculation of partial cell thickness to more robust algorithm
4545     o config_summary.F: replaced write_1D_... by write_0D_...
4546       read_write.F: added subroutines write_0D_...
4547     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
4548       included some initialisations required for TAMC.
4549     o routine calc_isoslopes: modified sqrt computation to make it
4550       differentiable for zero argument.
4551     o routines dynamics, impldiff:
4552       included store directives and tape key computations required for TAMC.
4553     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
4554    
4555    checkpoint27
4556     o fixed calc_isoslopes() to so that cancellation of terms in tensor
4557       formulation works properly with variable resolution.
4558     o restructured the calling tree between the_model_main() and dynamics()
4559     o split initialise() into initialise_fixed() and initialise_varia()
4560     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
4561       in new routine ini_psurf()
4562    
4563    checkpoint26
4564     o moved some #ifdef in optional routines to encompass everything
4565       except the argument declarations. This was using up some memory.
4566     o fixed macros like _ADT to work with both versions of Linux cpp
4567     o cleaned up some unused and uninitialized variables
4568       (helps when debugging with strict compile options)
4569     o split up CPP_EEOPTIONS.h into options and macros
4570       (macros are now in eesupp/inc/CPP_EEMACROS.h)
4571     o patch for 2 processor JAM mode
4572    
4573    checkpoint25
4574     o updates for OBCs and NH
4575     o dramatically reduced memory usage
4576     o added "JAM" routines for use on Artic network
4577     o parameterization of convection by implicit vertical diffusion
4578     o added a diagnostic of convective index
4579     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
4580       (this is was partly for OBCs and NH but also in anticipation of
4581        an explicit free-surface option)
4582     o initial state input files for U and V
4583    
4584    checkpoint24
4585     o Removed some spurious "REAL"s
4586     o Updated KPP to latest version from JPL
4587     o Added a COS(latitude) in horizontal viscosity
4588    
4589    checkpoint23
4590     o Added del^4 diffusion for salt and temperature
4591     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
4592    
4593    checkpoint22
4594     o Made many small changes: implicit none, format(i5), etc...
4595     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
4596    
4597    checkpoint21
4598     o Introduced new I/O package that supports direct-access records (mdsio.F)
4599     o Split-up mid-level I/O routines
4600     o Updated input data for experiments 0,1,2,4 and 5
4601     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
4602    
4603    checkpoint20
4604     o Tidied up open-boundaries some more
4605     o Added non-hydrostatic code
4606     o Fixed some input data
4607     o Modified MPI start-up to work in "coupled" context.
4608    
4609    checkpoint19
4610     o Tidied up directory structure for verification experiments.
4611     o Added new code for open boundaries.
4612     o Corrected advective terms near boundaries.
4613     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
4614     o Implemented free-slip/no-slip BCs and del^4 dissipation.
4615     o Split default parameters out of ini_parms.F into set_defaults.F.
4616    
4617    checkpoint18
4618     o Further changes for optional code generation with
4619       CPP - ugh!
4620    
4621    checkpoint17
4622     o Beginning to incorporating modularity
4623       for supporting atmos. and ocean configs.
4624     o Small changes for TAMC complinace
4625     o New ultra simple test case. Barotropic box
4626       configuration "exp0".
4627    
4628    checkpoint16
4629     o Minor changes to exchange routines to support
4630       accumulation in reverse mode. Adjoint of an
4631       assignment is an addition.
4632     o Changes to support compilation by TAMC (LR(1)
4633       syntax) and by g77 under Linux ( 72 character
4634       limit ).
4635    
4636    checkpoint15
4637     Rewrote exchange routines to allow
4638     o General tile <-> tile connectivity.
4639     o TAMC reverse mode flag ( is this really needed? )
4640     o Variable width overlap and exchange region widths.
4641     o Hooks for sharing data via DMA, Arctic, Memory Channel,
4642       shmput/shmget, VIA, SYSV shmem and every other cool
4643       communication method.
4644    
4645    checkpoint14
4646     Consistent isomorphism chages made. These allow dynamical core
4647     to support both pressure and meters as a vertical coordinate.
4648    
4649    checkpoint13
4650     Release which corrects global_max problem and a couple
4651     of KGM time-averaging diagnostic errors. Also contains
4652     a double-gyre experiment setup as well as the baseline
4653     4 degree global template. The double gyre template is
4654     organised to allow it to be applied automatically to
4655     the baseline configuration.
4656    
4657    branch-point-rdot
4658     A few tidy-ups have been made bt the real point of this
4659     check-point (excuse the pun) is to allow a branch to be
4660     made for the purposes of adding the rDot alterations.
4661     I don't want to commit the rDot to the main-trunk until
4662     we've actually tested it...
4663    
4664    checkpoint12
4665     Tidy up and added generic genmake script (formerly
4666     configure script).
4667     Released to testers.
4668    
4669    checkpoint11
4670     Re-arranged initialise() and introduced ini_vertical_grid()
4671     and ini_masks_etc().
4672    
4673    checkpoint10
4674     Introduced the configure script.
4675     Separated out the diags package.
4676     Added template for writing time-averages of tile/intermediate quantities.
4677     Updated SIZE.h in exp2 and made the data big-endian.
4678    
4679    checkpoint9
4680     MPI fix. Filename changes (meta/data). salbin*y stuff.
4681     General tidy-up.
4682     SST.bin SSS.bin added to verification/exp2
4683    
4684    checkpoint8
4685     Inludes time-dependant forcing and time-averaging.
4686     Works at 4x4 and 2.8125x2.8125 global
4687    
4688    checkpoint7-4degree-ref
4689     Branch from checkpoint7. Released for application to
4690     global modeling and general modeling - process studies, regional
4691     model etc..
4692     Configured for verification/exp2 - 4 degree global, two process.
4693    
4694    checkpoint7
4695     Created by cnh
4696     Simple 4 degree global simulation
4697     configuration.
4698     Includes climatological wind,
4699     hydrography, bathymetry etc
4700     Does not include Heat Flux and E-P
4701    
4702    checkpoint6
4703     Created by cnh
4704     merged checkpoint5 with CD and
4705     spherical polar code.
4706     Still some problems with GM Redi
4707     abd full topography.
4708    
4709    checkpoint5
4710     Created by AJA
4711     contains updates to GM Redi
4712     and reordered timestepping loop
4713     for Implicit Diffusion.
4714    
4715    checkpoint4
4716     Created by cnh
4717     Contains memory saving macros ( _rdxc etc..) for when
4718     grid variations are limited.
4719     Contains polynomial coeffs for EOS and knudsen program
4720     for generation.
4721    
4722  checkpoint3  checkpoint3
4723   Created by cnh   Created by cnh
4724   Added extra flags for runtime options   Added extra flags for runtime options
# Line 20  checkpoint1 Line 4737  checkpoint1
4737   Restructured kloop in dynamics.F   Restructured kloop in dynamics.F
4738   Added non-linear EOS   Added non-linear EOS
4739    
4740  baseline - Original checked in code  baseline
4741     Original checked in code
4742    

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