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revision 1.32 by adcroft, Thu Nov 30 16:51:40 2000 UTC revision 1.1129 by mlosch, Mon Jun 22 15:58:42 2009 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice:
8      - completely remove code for leap-frog time stepping for second order
9       advection
10     - clean up the 3-time levels of UICE,VICE,HEFF,AREA:
11      1. introduce fields for time step (N-1)
12      2. do not use levels 2 and 3 anymore (but keep them for now)
13    
14    checkpoint61q
15    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
16     - the boundary conditions along open boundaries are unclear, because the
17       associated masks are set to zero and are thus treated as closed when
18       applying the slip-boundary conditions.
19     - move initialisation of grid variables from seaice_init_varia to _fixed
20    o adding doc/diags_changes.txt
21    o model/src:
22      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
23       to avoid "_diags" naming if no relation to pkg/diagnostics.
24      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
25       file and only call PLOT_FIELD_XYZ if debugMode=T.
26      remove few PLOT_FIELD_XY calls outside initialisation.
27      remove few unnecessary BARRIER.
28    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
29      of salt_plume package in Southern Ocean
30    o pkg/thsice:
31     - fix hOceMxL in overlap (needed for sea-ice advection);
32       update output of experiment global_ocean.cs32x15.icedyn.
33    o pkg/seaice:
34     - make the (placeholder-)tracer IceAge a little more meaningful
35      by avoiding ridging of age due to convergent ice flow
36     - add diagnostics for surface temperature, atmospheric and oceanic
37       heat flux, and atmospheric and oceanic ice growth
38    
39    checkpoint61p
40    o eesupp (global_max & global_sum):
41     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
42     - remove starting & endding barrier (no longer needed)
43    o pkg/mdsio, writelocal:
44       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
45       (remove the STOP): uses shared buffer IO to store data from all threads
46       and then let master-thread write nThreads tiles.
47    o pkg/mdsio (read/write field):
48     - tiled IO done in 1 piece (all levels at a time);
49     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
50     - multi-threaded: allow to read/write local (non-shared) array
51       (was already working with singleCpuIO ; now works also without);
52       => no longer needs barrier call after reading a file (added inside
53       mds_read/write field).
54     - move barrier calls outside gather/scatter_2d to mds_read/write_field
55    o pkg/obcs/exf
56      - exf_getffieldrec.F: add a few ". _d 0" and
57                            add code to catch the case fldperiod = 0.  
58      - obcs_precribe_read.F: change if statements so that they match
59                              the variable type (_RL)
60      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
61        exf_iprec) as part of namelist EXF_NML_01
62    o pkg/mdsio:
63      - read/write tiled (local) files: read/write 1-level tile chunk at a time
64        (instead of segment of length sNx); expected to speed up tiled IO.
65    o pkg/exch2:
66      - take buffer copy from/to array out of S/R exch2_send/recv into new
67        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
68        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
69      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
70      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
71        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
72        including Topology header file (and common blocks).
73      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
74        remove 2nd exch call in exch2_s3d_rx (no longer needed).
75      - document S/R arg. list (+ update some comments)
76    o pkg/seaice:
77      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
78        temperature and humidity over sea ice based on climatological values.
79      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
80        of LSR (this change is expected to change the results slightly because now
81        it uses slightly difference moduli from the second last LSR solution, but
82        that is more consistent with the stress computations; this part of the code
83        is not tested in the verification experiments)
84      - fix diagnostics for flux of ice in case of B-grid
85      - turn strain rates eij and press into global fields within global
86        common block in SEAICE.h for more straighforward diagnostics
87      - fix diagnostics for principal stress components, press, zeta, eta
88        to give something meaning full
89    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
90      new output (all 4 tests) using default rotationPeriod.
91    o pkg KPP:
92      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
93      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
94        and normal grid from 1 to Nr)
95    o Fix computations of L4rdt in mom_calc_visc.F
96    o eesupp:
97      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
98      should be called before a "stop" if we know that all process are going
99      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
100    
101    checkpoint61o
102    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
103    o model/src/ini_curvilinear_grid.F:
104       compute angleSin/CosC when they are not read from a file
105    o pkg/seaice:
106       add pseudo time stepping for LSOR
107    o pkg/exch2:
108       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
109    o pkg/seaice:
110       Adding separate sea ice albedo, drag coefficients, and HO in Southern
111       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
112    o SingleCpuIO:
113       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
114    o pkg/seaice:
115       put exchanged variable in (local) common block for MPI+Multi-Threads
116       to work (necessary with exch1, and for now with exch2 too).
117    o verification: to get more experiments tested with mpi, mth and mpi+mth,
118      change tiling of:
119       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
120       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
121      update output of exp:
122       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
123       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
124      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
125                       (note: output.txt generated on faulks using only 1 tile)
126    o eesupp & mdsio (SingleCpuIO):
127     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
128       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
129       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
130     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
131     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
132       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
133    o pkg/exch2:
134     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
135       read parameter file "data.exch2" if it exists; otherwise try default regular
136       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
137     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
138       with new code (not to be used, just as a backup solution).
139     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
140       in utils/exch2/input.
141    
142    checkpoint61n
143    o eesupp & mdsio (SingleCpuIO):
144      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
145        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
146        receive real*4 array (instead of real*8) to read/write 32.bit files.
147        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
148         and remove new mapping S/R)
149    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
150      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
151        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
152        when using exch2. Add S/R to map global io-buffer to global model array.
153      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
154    
155    checkpoint61m
156    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
157      and add 3 other S/R for other types (R4,R8,RS).
158      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
159    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
160     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
161     - reduce number of macro definitions (keep only those which are used);
162       can always call directly the corrresponding S/R if needed.
163     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
164       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
165     Fixed wrong type of arg in:
166       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
167       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
168     To fix: global_sum of var in common block is wrong (multi-threaded) in:
169       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
170     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
171    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
172      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
173    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
174    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
175      edges are closed (zero depth); might happen with "blank tiles";
176      for now, disabled if using OBCS.
177    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
178      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
179    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
180      to reduce length of 1.D array print in STDOUT.
181    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
182      + use 48 tiles (16x8): this will allow to test "blank tiles".
183    o start to test MPI + multi-threaded (change testreport to skip tests
184      where number of tiles do not match).
185    o genmake2: add option "-omp" to turn on Open-MP ;
186      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
187    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
188      and keep the original tile numbering. Note: compatible with old
189      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
190    
191    checkpoint61l
192    o Overlaps had been forgotten in calculating ijk keys : fixed
193    o fix cyrus makedepend for gcc 4.4
194    o experiment fizhi-cs-aqualev20:
195      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
196      and generate new output. Note: new output is much closer to the old
197      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
198      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
199    o pkg/fizhi:
200     - change to avoid indices going deliberately over array-bounds
201     - remove unnecessary MPI stuff
202     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
203     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
204       does not go over array-bounds and therefore returns reliable output.
205     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
206       this S/R has 4 output arguments, which are used inside "get_alarm";
207       when it is called with the same variable "ndum" in place of several
208       output arguments, this produces weird side effect inside "get_alarm"
209      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
210       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
211       address) and produces error.
212    o tools/gemake2: (March 27-29 2009)
213      with option "-mpi": link *_mpi files from "MODS" dir (this is what
214      testreport does).
215    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
216    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
217       update lab_sea.lsr & lab_sea.salt_plume results
218    o pkg/seaice:
219      Major overhaul of the LSOR solver: change discretization from original
220      finite differences to finite volume. The old routine is still in the
221      file seaice_lsr.F and can be turned on with the CPP-flag
222      SEAICE_OLD_AND_BAD_DISCRETIZATION
223      Along with this change, the discretization of the strain rates is changed.
224      The same flag turns on the old discretization in seaice_calc_strainrates.F
225      All verification experiments with seaice are affected (except for
226      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
227      results by setting the above flag.
228      Further changes involve changes in defaults:
229      - ALLOW_FLOODING is defined and turned on by default
230      - SEAICEadvSnow = .true. is now the default
231      - SEAICEadvSalt = .true. is now the default
232      - SEAICEadvAge  = .true. is now the default
233      - SEAICE_clipVelocities  = .false. is now the default
234                                         (as per J. Zhang's recommendation)
235      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
236        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
237      - seaice_growth: replace computation of UG by a simple copy from wspeed
238    
239    checkpoint61k
240    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
241      seaice_lsr: fixed a few metric terms,
242                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
243                  add more debugging diagnostics
244      seaice_evp: removed superfluous many metric terms of FV discretization
245                  of stress divergence
246                  affects lab_sea, lab_sea.hb87
247      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
248                  of stress divergence for non-evp solver
249                  (this part is not tested anywhere)
250      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
251                  they were effectively only half slip
252                  affects lab_sea.hb87
253      updated all relevant verification experiments (except lab_sea//output_adm.txt
254        which was left over, but fails at level 7 & 6)
255    
256    checkpoint61j
257    o pkg/seaice: turn a few hard wired parameters into run time parameters
258    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
259      time in seconds as promised by the usints in seaice_monitor and exf_monitor
260    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
261      that are not cubed-sphere grids
262    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
263    o pkg/ctrl:
264      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
265    o non-hydrostatic (calc_gw.F):
266      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
267      update output of exp. global_ocean.cs32x15.viscA4
268    o remove backward compatibility for thetaMin,phiMin
269      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
270    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
271      interpolated wind field not only for curvilineargrid=.true., but also
272      for a rotated grid (rotateGrid=.true.)
273    o pkg/exf: add capability to bypass interpolation for runoff
274      by setting yet another CPP-flag
275    o eesupp/src, B-grid exchange:
276      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
277    o autodiff
278      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
279      allows to switch to single-prec common blocks;
280      corresponding switch occurs in tamc.h, integer isbyte
281      TAF store directivs "byte" and "kind" seem equivalent;
282      Most tamc.h have been updated correspondingly.
283    
284    checkpoint61i
285    o autodiff:
286      fix autodiff_sore/_restore indices for obcs
287      (spotted by I. Hoteit, M. Mazloff)
288    o pkg/autodiff, pkg/ctrl:
289      Add flag to reduce all tapelev I/O to single-prec.
290      In data.ctrl set
291        doSinglePrecTapelev = .TRUE.
292    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
293      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
294    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
295      real fresh water flux (not yet)
296    o pkg/mdsio & rw:
297     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
298     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
299    o pkg/flt:
300     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
301       init_fixed & ini_varia.
302     - clean-up & simplify linear interpolation S/R:
303       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
304     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
305     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
306     - add vert. coordinate & horiz. indices to output files.
307     - change vertical position in initial condition, from index to depth [m].
308     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
309       (easier to get to a curvilinear grid) ; delX,delY no longer used.
310    o pkg/ggl90: a few modifications:
311     - fix bottom boundary condition, and interpolation of KappaE
312       near top and bottom
313     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
314     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
315     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
316    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
317      (maintain temporary backward compatibility, until next checkpoint)
318    
319    checkpoint61h
320    o pkg/diagnostics with "periodic averaging diagnostics":
321      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
322    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
323    o pkg/obcs: fix loop ranges for balancing code
324    o pkg/flt:
325     - improve criteria for finding which tile owns a float.
326     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
327    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
328      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
329      with ocean biogeo)
330    o pkg/flt:
331     - do some cleaning and fix the restart ;
332     - add output.txt in flt_example/results to get this pkg tested.
333    o genmake2: add an EXTENDED_SRC option and flag.
334       for now, cannot be turned on on command line (only through genmake_local)
335    o pkg/mdsio: read/write vector:
336     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
337     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
338       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
339     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
340      (drop to 4 digits matching for grad). But this test does not look very
341      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
342    
343    checkpoint61g
344    o pkg/flt:
345      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
346       + make OPTIONS file more standard.
347      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
348      - fix _BYTESWAPIO CPP-Flag
349      - standard reading of file-parameter "data.flt"
350      - fix argument list of S/R FLT_RESTART
351      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
352    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
353    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
354      a still unfixed compiler/optimization bug
355    
356    checkpoint61f
357    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
358      update results of global_ocean.cs32x15.icedyn test.
359    o move getcon.F from model/src to pkg/fizhi.
360    o pkg/exf: add parameter for extrapolation of temp up to the surface
361       and option to prevent negative evap (in bulk_largeyeager04 only).
362    o Prather Advection scheme: fix tracer conservation for divergent flow
363      (e.g., when using NonLin Free-Surface).
364    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
365    o gmredi (Visbeck-variable-K):
366     - add more parameters to Visbeck-variable-K.
367     - use a 5 points average for dSigmaR in Visbeck-K calculation
368       (more "homogenous": same stencil and same weights as in dSigmaH)
369     - update output of ideal_2D_oce experiment.
370    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
371      (#undef REAL4_IS_SLOW)
372     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
373       coordinate variable
374     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
375       (surface forcing fields), removes some of the functionality
376     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
377     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
378       probably not all: copy _RS surface flux fields to RL field before
379       calling DIAGNOSTICS_FILL
380     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
381       real*4 (CALL EXCH_*_RS) versions.
382     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
383       (generate new output).
384    
385    checkpoint61e
386    o gmredi (Visbeck-variable-K):
387      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
388      - change computation of Visbeck-K where Slope > Smax :        
389        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
390        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
391    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
392      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
393    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
394    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
395      does not become too large (to avoid precision problems in implicit-diffusion
396      solver); update ideal_2D_oce output.
397    o pkg ggl90:
398      - in ggl90_cal.F: compute only one set of visc/diff, used to
399        step forward TKE/T/S/momentum
400      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
401        have Prandlt =1)
402    o gmredi (fm07):
403      - add lower limit on Transition layer thickness + lower limit on 1/lambda
404      - allow to set few more params from data.gmredi
405    o pkg ggl90:
406          - add missing sqrt(2) factor in computation of mixing length
407            scale in ggl90_calc.F
408            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
409    
410    checkpoint61d
411    o adjoint modifs
412      - adapt to new field rhoInSitu
413      - allow to revert from StoreDynVars2D, StoreDynVars3D
414        to individual fields
415        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
416    o store 3-D (in-situ) density in commom block (DYNVARS.h)
417     - save 1 rho computation.
418     - no longer modify T & S inland when using down_slope pkg.
419    o gad_som : allow to switch to SOM advection for T & S without corresponding
420      pickup files (using new S/R: MDS_CHECK4FILE).
421    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
422      (for useSingleCpuIO to work in multi-threaded)
423    o pkg/shelfice:
424     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
425       with SHELFICEtopoFile in data.shelfice
426     - move code for reading ice shelf topography and modifying hFacC into separate
427       subroutines of the shelfice package
428     - separate initialisation of "fixed" and "variable" variables
429     - kTopC is not (yet) replaced by kSurfC, although this is possible
430    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
431    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
432      and rename:
433      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
434      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
435    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
436    
437    checkpoint61c
438    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
439      to add mass source/sink of fluid in the interior (3-D generalisation
440      of oceanic real-fresh water flux).
441    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
442    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
443    o new pkg: down_slope
444      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
445      - presently, modify T & S inland (dwnslp_calc_rho.F).
446        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
447      - implementation for ocean in P-coords not tested.
448      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
449    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
450      (to facilitate conversion of oceanic pkg to p-coordinate).
451    o change FIND_RHO to FIND_RHO_2D :
452      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
453    o new pkg: cheapaml
454    
455    checkpoint61b
456    o exch2:
457      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
458      - no longer depend on the order sequence (N,S,E,W).
459      - 3rd exchange no longer needed (tested with 24 tiles).
460      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
461      - exch_UV_A-grid readily available (but not yet tested).
462      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
463      (both are no longer needed) in exch_uv: no effect in forward run; but
464       get truncation error differences with adjoint exch.
465    o exch2:
466     - change index-bounds storage (moved from target to local tile,
467       more intuitive this way) ; rename/remove some variables.
468     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
469    
470    checkpoint61a
471    o exch2/matlab-topology-generator:
472      fix bug in index bounds for N-S internal exchange (hard to tell if this
473      had any effect on the solution).
474    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
475      is exceeded
476    o testreport: modify syntax of awk, so that it works also with
477      awk, and not only with nawk and gawk
478    
479    checkpoint61
480    o autodiff
481      Change default for TAF usage by removing argument '-nonew_arg'
482      This changes TAF subroutine argument list (ordering of active var.)
483      Omission of this flag leads to incompatibility w.r.t. TAMC
484      To restore TAMC-compatibility, need following modifs:
485      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
486      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
487      Tested TAF version is 1.9.22
488      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
489    
490    checkpoint60
491    --->>> This is the last checkpoint for which generating the adjoint
492    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
493    --->>> by default.
494    --->>> Future checkpoints will ommit this flag by default.
495    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
496    o pkg/grdchk: Add gradient check to etan0 perturbations.
497    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
498    o pkg/autodiff: more flexibility in zeroadj.
499      model/src: modifying do_oceanic_phys.F accordingly.
500    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
501    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
502      special setup of gmredi for which the adjoint is stable
503      enough for parameter optimization.
504    o bridging the gap between eddy stress and GM.
505      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
506          along with a change in CPP option (now ALLOW_EDDYPSI).
507      -> when using GM w/ GM_AdvForm:
508          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
509          is applied either in the tracer Eq. or in momentum Eq.
510          depending on data.gmredi (intro. GM_InMomAsStress).
511      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
512      The key modifications are in model/src/taueddy_external_forcing.F
513      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
514    
515    checkpoint59r
516    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
517      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
518      fix option to read coriolis(@ cell-corner) from files with CS-grid.
519    o pkg/mnc: add some attributes to standard 1D-coordinate variables
520    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
521      mass points, when using mnc for output
522      - add runtime parameter (missing_value, missing_value_int) to override
523        default (which is the value of getcon('UNDEF'))
524    o pkg/mnc: prepare mnc for the actual use of missing values with the
525      diagnostics package: small fix in mnc_cw_readwrite.template and more
526      initialisation of never used fields
527      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
528      versions
529    o pkg/thsice/thsice_ini_vars.F added default initial values so that
530      thermodynamics sea ice solver does not blow up when some initial fields
531      are missing.
532    o move from external_forcing_surf.F to ini_forcing.F
533      the p-coord. hack consisting in using pLoad to set phi0surf ;
534      update output of tutorial_global_oce_in_p (affected @ truncation level).
535    o Freshen up a bit hs94.1x64x5, notably:
536      remove rotationPeriod and tRef=5*0. (adjoint only), and add
537      exactConserv=.TRUE.
538    o pkg/generic_advdiff:
539      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
540      applies to files where Temperature & Salinity 2nd Order moments are used.
541    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
542      this uses a dynamically allocated internal state data structure
543      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
544      and requires a fortran 90 compiler
545    
546    checkpoint59q
547    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
548       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
549    o Refresh tutorial_global_oce_biogeo, notably:
550      - change bathymetry (put back seamounts in ACC, use hFacs)
551      - change EOS (POLY3 --> JMD95Z)
552      - use Bryan-Lewis vertical diffusivity
553      - use multidimensional advection
554      - remove old virtual virtual in dic pkg, now done through ptracer pkg
555      - change a couple of parameters in dic pkg
556    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
557    o pkg/obcs: change default to OBCSfixTopo = .true.,
558      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
559      - replace "debugMode" with "debugLevel .GE. debLevB"
560    o implementation of TAF directives for gchem,cfc,dic
561    o remove "exp5" (replaced by tutorial_deep_convection).
562    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
563      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
564      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
565      --> changes results in exp4, seaice_obcs
566    o tutorial_deep_convection :
567      update the set-up and increase resolution and domain size ; start
568      from pseudo initial conditions = output at t=120mn in order to see
569      something happening when running testreport.
570    o pkg/seaice: add os7mp as an advection scheme
571                  add check for advection schemes
572                  add a flag for restoring T and S underneath sea ice
573    o pkg/my82: add netcdf-support and diagnostics
574    o thsice pkg:
575      - Now hsMax limits snow height by turning it into ice following
576        flooding scheme (and now conserving energy)
577      - Slight rewriting of the formula in thsice_calc_thick.F
578      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
579      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
580    
581    checkpoint59p
582    o gchem / dic / cfc :
583      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
584      - add new parameter files: "data.dic" & "data.cfc" ;
585      - various re-arrangement in initialisation & header file ;
586      - fix tutorial_global_oce_biogeo for multi-threaded test.
587    o pkg/dic: test for "pickup_dic" file when restarting ;
588      if no pickup-file, can restart with a re-initialised pH (same as it did
589      before) providing pickupStrictlyMatch is set to False.
590    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
591      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
592    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
593      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
594    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
595     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
596       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
597    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
598       scheme to use for vorticty-term ;
599     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
600       (with default selectVortScheme, return to original discretisation)
601     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
602    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
603    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
604      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
605      also fix diagnostics VISCAHW & VISCA4W.
606    
607    checkpoint59o
608    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
609    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
610      move a few statemens out the main loop into separate loops
611    o pkg/shelfice:
612      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
613        (kg/m^2/s), does not break tests, because in verification/isomip,
614        rhoConstFresh=rhoConst (by accident)
615      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
616      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
617        new file model/src/seawater.F, so that they are available for all pkgs.
618      - convert potential temperature into in-situ temperature. This changes the
619        isomip tests => update tests
620    o add a flag writePickupAtEnd (default=true) to be able to suppress
621      writing a pickup at the last timestep
622    o tools/mpack-1.6 :
623      - disable automake (not working) and autoconf (not needed).
624      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
625        also cleaner with much less compilation warnings.
626    o pkg/profiles:
627      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
628      (for "less than 32 characters name" compiler requirement)
629    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
630      conditions that have a different sampling frequency than S/T/U/V obcs
631    o pkg/diagnostics (stats-diags):
632      - fix global Min/Max in case 1 processor get only empty tiles
633    o genmake2: replace (4 times)
634         make genmake_tc_1.o >> genmake_warnings 2>&1
635      with
636         COMM="$CC $CFLAGS -c genmake_tc_1.c"
637         echo $COMM >> genmake_warnings
638         $COMM >> genmake_warnings 2>&1
639      to make genmake2 always see the value of CC as specified in the optfile.
640    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
641      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
642      - modify verification advect_cs test to test SOM-advection on CS-grid.
643    o pkg/ctrl:
644      - Rewrite of ctrl_map_ini_ecco.F,
645        introducing a generic routine (ctrl_map_ini_gen.F).
646      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
647    
648    checkpoint59n
649    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
650      number in dedicate array "hdiag":
651      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
652        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
653      - many small changes (integer format) for large number of diagnostics
654      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
655        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
656    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
657      usingSphericalGrid, this allows to define the rotated grid coordinates
658      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
659      geographical coordinates according to the inverse of the rotation defined
660      by the Euler angles, so that Coriolis parameter and online-interpolation by
661      exf works with the geographical coordinates on XC/YC/XG/YG.
662      Naturally, this feature does not work with all packages, so some
663      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
664      profiles), because there the coordinates are assumed to be regular
665      spherical grid coordinates.
666    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
667      - introduce isopycnal diffusion coefficient control.
668    o tools/adjoint_options:
669      - additional control vector components.
670    o pkg/mnc: have mnc create marginally meaning full coordinate variables
671      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
672    o pkg/mypackage:
673      - add example of read/write pickup for state-var ;
674      - add entry points to the main code for state-vars diags & write-pickup.
675    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
676      transitions for useExfYearlyFields
677      - add new subroutine that determines the file to read from for
678        use*YearlyFields = .TRUE. and .FALSE.
679      - add a verification experiment to global_with_exf that tests
680        useExfYearlyFields with USE_EXF_INTERPOLATION defined
681    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
682      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
683      subroutines (which could be generated from a template, because they are
684      almost identical), for now they are included in obcs_prescribe_read.F for
685      simplicity
686    o pkg/exf:
687      - add a little more diagnostic to exf_interp_read (in analogy to
688        mds_read_field, can be turned off with debugLevel < debugLevA=1)
689      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
690        ugly but fast by unrolling short inner loops, inserting a unroll=8
691        directive in routine lagran, and splitting a loop and making do while the
692        outermost loop (the latter requires the intoduction of index arrays)
693    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
694    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
695      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
696    o verification/seaice_obcs: updated for restart test and latest options
697    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
698      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
699      for now this is only available for the C-grid code and also within
700      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
701    
702    checkpoint59m
703    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
704      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
705    o gad_som : fix flux output (& diagnostics) to have same units as other  
706      advection scheme fluxes (was previously multiplied by deltaT).  
707    o added verification/seaice_obcs both to test seaice open boundaries
708      and to provide an example matlab scrpt for generating them
709    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
710    o pkg/salt_plume: clean up salt_plume_frac.F to
711      remove redundancy in PlumeMethod 1 and 4
712    o pkg/kpp: added saltplume diagnostics
713    o pkg/obcs and pkg/seaice:
714      - do not set uice and vice to zero when OB*icefile are unspecified
715      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
716      - moved seaice tracer obcs after call to seaice_growth
717    o pkg/salt_plume: added various options for salt plume depth
718      criterion and for vertical distribution of the salt
719    
720    checkpoint59l
721    o pkg/ptracers: new version of ptracers pickup:
722      read meta file and write only fields which are needed to restart.
723      ( same logic as main pickup file ; also using pickupStrictlyMatch )
724    o pkg/seaice:
725      - add timescale for melting due to warm mixed layer as a means of
726        setting SEAICE_availHeatFrac more conveniently
727      - add a CPP-flag/runtime parameter check for flooding algorithm
728      - reformulated availHeat in seaice_growth.F to be independent of AREA
729    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
730      unit changes
731    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
732    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
733      SX vector computer.
734    o pkg/seaice:
735      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
736        seaice forcing fields can now be read only through pkg/exf
737      - removed some unused halos
738    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
739    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
740      or U/VICE from U/VWIND before computing U/VSTRESS
741    
742    checkpoint59k
743    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
744      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
745    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
746      all experiments pass when compile with un-initialised var. checking option.
747    o added pkg/salt_plume
748    o script to test restart (for now, in MITgcm_contrib/jmc_script)
749    o pkg/seaice: new read/write pickup version.
750      read meta file and write only fields which are needed to restart.
751      ( same logic as main pickup file ; also using pickupStrictlyMatch )
752    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
753    o lab_sea.hb87: modify the domain & update output.hb87.txt :
754      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
755      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
756      process. Fixed here by closing the domain at the Northern boundary.
757    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
758    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
759      a set of consecutive levels in/from a 3-D array.
760    o pkg/ptracers:
761      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
762      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
763    
764    checkpoint59j
765    o in pkgs: dic, obcs, offline, rbcs:
766      standard way to compute coeff. for time interpolation between 2 time reccords
767      which retains full precision (& make results less dependent on compiler).
768      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
769    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
770      packages instead of reading ice cover and wind speed separately
771    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
772     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
773      to allow to compile customized code before the update)
774    o cleaning-up:
775      - fix CPP instruction syntax in pkg/obcs
776      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
777        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
778      - fix some threads issue in IO parts.
779    o pkg/dic:
780      - add tons of "_d 0" (--> much better testreports !)
781       and then update outputs of tutorial_global_oce_biogeo
782    o pkg/mom_fluxform:
783      add a special version of momentum advection intended to conserve momentum
784      next to a bathymetry step or a coastline edge. (default = off = #undef)
785    o new read/write pickup version:
786      - for now, only implemented for main (mdsio) pickup file.
787      - write out only what is needed to restart; merge pickup_nh , pickup_ph
788        and main pickup together.
789      - read meta file; read only what is needed to restart; stop if a field
790        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
791        if it make sense (even if the restart is not perfect).
792      - if no meta file, assume that pickup to read corresponds exactly to
793        a pickup that would currently be written.
794      - read pickup written in the old format (until checkpoint59i) if it
795        recognizes an old meta file (no field-list).
796      - add a meta file in exp. which starts from a pickup: 2 cases:
797        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
798         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
799        b) a meta file describing the content of the associated pickup file
800         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
801    o pkg/mdsio & pkg/rw:
802      - new routine to read a meta file ; new set of routine to read
803        Multiple-fields file (with meta file).
804    o added open boundary conditions capability for seaice
805        HSNOW, HSALT, UICE, and VICE
806    
807    checkpoint59i
808    o adjoint:
809      * fix multiDimAdvection adjoint
810        (partial recomputation problem by TAF for fVerT(:,:,kDown)
811        and comlev1 size definition (maxpass vs. max. number of tracers)
812      * verification/global_ocean.90x45x15 adjoint now tests
813        NLFS and multiDimAdvection using DST3 (=30)
814      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
815    o pkg/kpp: add "_d 0" to real constant (if missing);
816      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
817      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
818    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
819      for internal parameters related to restart process (formerly from PARAMS.h)
820      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
821    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
822      as argument. (only atm2d & obcs write_pickup have not yet been updated)
823    o pkg/monitor:
824      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
825      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
826      - account for deep Atmosphere factor and density factor (anelastic)
827    o added open boundary conditions capability for seaice HEFF and AREA
828    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
829      thermodynamics
830      - requires a little reorganization, which affects the testreport results
831        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
832        so that now the conservative form is tested
833      - add a few comments
834    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
835    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
836    o add new diagnostics to seaice: advective, diffusive fluxes (only for
837      multidim-advection, for scheme 2 they are not filled) and transports,
838      thermodynamic growth rates
839    o change units of EmPmR (inside the code, + within coupling interface)
840      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
841      Affects results @ truncation level (cg2d match) and update output of
842       experiments: lab_sea(6), global_ocean.90x40x15(10),
843      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
844      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
845      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
846      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
847    
848    checkpoint59h
849    o pkg/exf:
850      - improve vectorization by moving if-statement out of loops in
851        exf_mapfields, exf_radiation
852      - exf_bulkformulae.F: introduce 2D fields and vectorize code
853    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
854    o testreport:
855      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
856        monitor & update offline_exf_seaice exp. output.
857      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
858    o pkg/seaice:
859      - bug fix in the evp solver: boundary conditions were affected be
860        masking of zMax/zMin (changes results)
861      - minor bug fix in boundary conditions in seaice_calc_strainrates
862        (changes results for no_slip)
863      - seaice_lsr.F: make interpolation of eta dependent on boundaries
864      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
865      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
866        stress formulation and no-slip boundary conditions
867    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
868      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
869    o pkg/seaice: a first HSALT time stepping equation has been checked in
870    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
871      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
872      without requiring DO-IF statements
873    o pkg/thsice:
874      use continuous power-law function for partition of energy between lateral
875      melting/freezing and thinning/thickening ; old code using step function
876      still available with #undef THSICE_FRACEN_POWERLAW
877      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
878    o testreport: change AD testing : check against results/output_adm.txt
879      using same scripts as for forward test.
880    
881    checkpoint59g
882    o adjoint testing: in preparation for changing testreport:
883      - output format: cost and grad written on separated lines
884      - ad output results in directory "results" (instead of "results_ad")
885    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
886    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
887    o pkg/ecco: allow user defined cost function contributions
888    o testreport:
889      Allow to choose (per experiment) the list of tested output variables
890       and the main variable (used to issue a pass/FAIL ) ;
891      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
892      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
893      Also modify printing of summary:
894       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
895       b) echo the list of tested variables in the individual summary.txt of
896          each experiment.
897    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
898      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
899      (but still depend on the tile decompostion of the domain).
900    o pkg/seaice: change a discretization detail to make the B-grid code
901      "more symmetric". This change is likely to remove all "ridges/leads" that
902      where quasi-aligned with the grid in B-grid solutions. It may also be
903      the solution to the stress coupling issues with the B-grid.
904    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
905      remove .cvsignore from input dir. (since testreport no longer run here).
906    o pkg/thsice:
907     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
908     - fix reshaping of sea-ice just after advection:
909       melt all the ice only if ice-volume is too small.
910     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
911       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
912     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
913    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
914      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
915    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
916      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
917      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
918      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
919      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
920      -> update output.txt
921    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
922     this affects truncation error: -> update output.txt of exp:
923      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
924      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
925    
926    checkpoint59f
927    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
928    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
929      a bounded range (in forward mode)
930    o pkg/ecco, ctrl, autodiff and mom_common:
931     internal parameter controls, completements of implementations
932    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
933    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
934      (not seem any difference in testing results).
935    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
936       at face corners.
937    o pkg/generic_advdiff:
938     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
939      loop range indices for computing vertical advection tendency
940      and do the calculation in the interior only (no overlap) ;
941      for now, only implemented for SOM advection (to save CPU time).
942     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
943    o exch2 adjoint
944      First set of changes:
945      - add exch2 hand-written adjoint templates
946      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
947        This will require cleanup in pkg/autodiff/*.F
948        (changed routines currently kept separate in verif. code/)
949      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
950        that used to hide exch2 or cubed-sphere specific code
951        (commented via 'cph-exch2')
952    o pkg/seaice
953      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
954    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
955       output of global_ocean.cs32x15.thsice .
956    
957    checkpoint59e
958    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
959      for B-grid vector (not yet tested) and C-grid vector (<- only used
960      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
961    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
962      (#ifdef ALLOW_SALT_PLUME)
963    o gather_2d/scatter_2d: removed halo regions
964    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
965      scheme and the corresponding test case (under front_relax dir). For now,
966      only available with Skew-flux form and not yet tested in realistic set-up.
967      adjoint: store directives updated, but gradient checks deteriorated,
968      so maybe GM/Redi adjoint is now broken.
969    o seaice adjoint
970      * add AREA, HEFF, HSNOW as control variable
971        (should not change lab_sea results)
972      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
973    o pkg/seaice:
974      * added computation of saltFlux in seaice_growth;
975        For time being, sea ice salinity is assumed constant
976        contribution of snow flooding to freshening of sea ice is neglected.
977        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
978        defaults to 0.0 in order to maintain backward compatibility.
979        Typical values for SEAICE_salinity are 4 to 10 g/kg.
980      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
981      * added SEAICE_availHeatFrac, which specifies fraction of surface level
982        heat content used to melt or grow ice
983      * commented out cap of HICE: it helps keep ice thinner
984      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
985      * applied OBCS T/S mask to HEFFM sea ice mask
986    
987    checkpoint59d
988    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
989     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
990     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
991    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
992     and change default value of parameter "GM_Small_Number";
993     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
994       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
995       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
996    o pkg/ecco: cost function when applying pkg/smooth to controls
997    o pkg/ctrl: add forcingPrecond run time parameter
998    o pkg/seaice:
999     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
1000     - fix bug in metric terms of u-equation in LSR solver (implicit part),
1001       changes verification/lab_sea
1002     - rearrange implicit part of u-equation in LSR solver to make it easier to
1003       read, understand, and debug. This causes changes at the truncation level.
1004     - fix (serious) bug in the boundary conditions (sign error in the implicit
1005       part) of the LSR solver. Changes all LSR results.
1006     - fixed problem with HSNOW initialization to avoid thick snow when AREA
1007       is initilized with small values - does not change lab_sea results.
1008     - added HsnowFile initialization capability
1009    o pkg/smooth: addition to model/src and pkg/ctrl so allow
1010     initialization of pkg/smooth and application to control vector
1011    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
1012    o dependencies: pkg/profiles requires pkg/cal
1013    o pkg/profiles:
1014     - added option ALLOW_PROFILES_GENERICGRID
1015         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
1016         that interpolation information (grid points and coefficients) is provided
1017         within the netcdf input files.
1018         -> sample matlab scripts can be found in MITgcm_contrib/gael
1019         that allow you to prepare netcdf input files.
1020     - also modified: cleaner include statements, cleaner error print statements,
1021       cleaner stops when error, and more tests of the netcdf input files consistency.
1022    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
1023    o pkg/seaice:
1024     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
1025       requires a new routine: seaice_diagnostics_fill.F
1026     - make sure that seaice does not move if not forced (pressure replacement
1027       method, Hibler and Ip, 1995), changes results
1028     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
1029     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
1030       It is turned off by default (=-1.), because it changes the results.
1031     - make it possible to read AREA from a file, too.
1032    
1033    checkpoint59c
1034    o add S/R and diagnostics for oceanic mixed-layer depth
1035    o move GMRedi call after all vertical mixing schemes (including KPP)
1036    o pkg/thsice:
1037     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
1038      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
1039    o pkg/obcs:
1040     - bug fix for balance code
1041    o pkg/seaice:
1042      - allow values of SEAICE_elasticParm > 1
1043      - add new parameter SEAICE_evpTauRelax as an alternative
1044        to SEAICE_elasticParm
1045      - make lsr boundary conditions free slip (by default), changes result
1046      - add code for no slip boundary conditions for lsr
1047      - set minimum of zeta to zero (and not 4e8) (changes results)
1048      - add a cap on AREA after advecting AREA if seaice_growth is not called
1049    o change calculation of Visbeck K:
1050      - no longer depend on tapering scheme; instead, compute slope (limited
1051        by GM_maxSlope). this is equivalent to what was comuted before with
1052        clipping or linear tappering.
1053      - fix vertical averaging (wrong by 1/2 level)
1054      - leave the old version (but will not be maintained) within
1055        #ifdef OLD_VISBECK_CALC / #endif
1056      - update output of exp. ideal_2D_oce
1057    o change error catch in calc_r_star to improve vectorization
1058    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
1059      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
1060    o adjoint:
1061      Re-organized adjoint checkpointing according to Matt Mazloff
1062      (but with modifs/completions/cleanups)
1063      Storing is now bundled into large arrays to optimized I/O
1064      (and second step in cleanup of the_main_loop)
1065    
1066    checkpoint59b
1067    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
1068      - export/import (between ocean & coupler) fields needed for ocean DIC.
1069    o pkg/seaice:
1070      - get rid of three more exchanges seaice_calc_viscosities (required
1071        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1072      - bug fix in seaice_ocean_stress (update of lab_sea required)
1073      - reduce loop boundaries to necessary minimum also in seaice_evp
1074      - go back to the old way of computing deltaC/Z as the adjoint likes that
1075        better
1076    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1077      passive tracer to an Age Tracer) + update output.txt
1078    o pkg/exf:
1079      - implement A-grid / C-grid selection for wind-stress input files.
1080      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1081      for now, in exf_bulk_largeyeager04.F only :
1082      - change implementation for case where windspeed + 2. components wind-stress
1083        are read-in. AND use rhoConstFresh to convert evap.
1084    o pkg/seaice:
1085      - use correct EXCH_UV for wind-forcing (on A-grid).
1086      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1087        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1088    o pkg/exf:
1089      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1090      EXF_INTERPOLATION:
1091      - merge global_with_exf/code version of exf_interp_read.F
1092        to the main code ;
1093      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1094        reading the file ; Important: This options needs to be defined to recover
1095        previous code.
1096        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1097      - no longer loose real*8 precision along the way when using exf_iprec=64.
1098    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1099      - change discretisation of evp-solver in order to avoid another exchange
1100        (changes lab_sea) and clean up a little
1101      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1102        help the adjoint (this also changes the results slightly)
1103      - add a few "_d 0" where they had been missing in seaice_evp.F
1104      - cleaning up: remove unused seaice_calc_rhs.F
1105    o pkg/exf: some cleaning-up:
1106      - change various "constants" into runtime parameters
1107      - cleaned-up Large&Yeager04 routine which should eventually
1108        replace exf_bulkformulae.F (changed names of S/R and CPP)
1109        and merged various ALLOW_ATM_WIND options
1110     only used with thsice pkg (in thsice_get_exf.F):
1111      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1112        which are used when useStabilityFct_overIce=TRUE (= the default)
1113      - change default values of ice & snow emissivity and scale downward LW
1114        by ice & snow emissivity.
1115    o pkg/thsice:
1116     fix few little problems, in thsice_calc_thickn.F:
1117      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1118      - melt only laterally if hIce < hThinIce (as the comments say)
1119      and in thsice_extend.F:
1120      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1121      - start to form ice as soon as the minimum ice-volume is reachable.
1122     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1123      and cpl_aim+ocn
1124    o pkg/kpp
1125     - move computation of surface related input fields to KPP into a new
1126       subroutine kpp_forcing_surf.F
1127     - remove wrong (within bi,bj loops) EXCH calls.
1128     - little cleaning (add argument myThid in last position, cvs header ...)
1129     - for now, fix conservation problem by exchanging KPPviscAz (may not
1130       be the best fix)
1131    o pkg/seaice
1132     - check for inconsistent evp parameter/cpp-flag combination
1133     - remove leftover errIO flat for obsolete name list error handling
1134    o OpenAD
1135     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1136    
1137    checkpoint59a
1138    o pkg/seaice: some parameter clarifications and a little bit of clean up
1139    o pkg/thsice: rename run-time parameters:
1140       himin       -> hIceMin
1141       himin0      -> hThinIce
1142       hihig       -> hThickIce
1143       i0          -> i0swFrac
1144       transCoef   -> bMeltCoef
1145       frac_energy -> fracMelting
1146      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1147       with default values (for now) that do not change the results.
1148      remove old version of thsice vars advection in pkg/seaice.
1149    o in FFIELDS.h:
1150      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1151      - make pLoad & sIceLoad always available (but still only used if
1152         ATMOSPHERIC_LOADING is #define).
1153    o pkg/kpp: replaced _KPP_RL with _RL
1154    o bug fixes for vertical diffusivity computations when both KPP and
1155        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1156        are no longer updating the vertical diffusivity array
1157        (passed as argument) but are (re-) setting those arrays.
1158    o pkg/seaice: fix bug in evp solver, while doing that
1159      - change (improve?) discretization of stress computations for both
1160        cgrid-lsr and evp solver
1161      - add a new routine to compute strain rates
1162      - the above changes lab_sea results
1163      - add no slip conditions for evp solver (off by default), lsr-version
1164        may follow
1165      - fix exchange for shear at Z-points (does not change lab_sea)
1166      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1167        (to force the user to pick a time step since there is not "safe" way
1168        of choosing it)
1169      - add principal stress diagnostics
1170      - rearrange fields for evp a little to avoid having to call a: too many
1171        exchanges and b: exchanges for stress trensor components which we do
1172        not have.
1173      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1174        of evp, complete rewrite for lsr case (latter is does not yet work
1175        in all cases)
1176    o pkg/kpp: add code to have mixing in shelf ice caverns
1177      - add myThid to all kpp routines (long overdue)
1178    
1179    checkpoint59
1180    o pkg/exf:
1181      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1182        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1183      - move exf header files from lower_case.h to UPPER_CASE.h ;
1184        add missing cvs Header & Name
1185      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1186      - add namelist param. selectStressGridPosition, exf_monFreq
1187      - retire many _CLIM routines, and remove data.exf_clim
1188        + params moved to data.exf
1189        + climsst, climsss now handled by exf_set_gen, i.e.
1190          climss?period=0 refers to constant field,
1191          climss?period=-12 to monthly forcing
1192      - split up namelists in data.exf
1193    o pkg/seaice:
1194      - remove seaice_exch and seaice_exch_uv
1195      - remove superfluous exchange of theta
1196      - add myThid to seaice_budget_ocean/ice
1197      - add new interface for atmospheric wind forcing (C-grid only)
1198        + new routine
1199        + two new field (taux, tauy for stress over ice)
1200        + removed one global field (DAIRN) for C-grid case only
1201    o pkg/thsise
1202      - 2nd set of modifs for thsice adjoint in conjunction with exf
1203    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1204    
1205    checkpoint58y_post
1206    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1207      vertical diffusivity, similar to that in MOM4; turned on using
1208      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1209      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1210    o Added capability for 3D specification of background vertical diffusion
1211      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1212      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1213      "data" file that contains the 3D vertical diffusivity coefficients.
1214    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1215      - add code within pkg thsice to advect & diffuse sea-ice fields
1216      similar to (and will replace) what has been added in  seaice_advdiff.F,
1217      but: - conserving Mass, Heat & Salt.
1218           - better when using non-linear advection scheme (not yet fully tested)
1219           - can also be used in atmospheric set-up (for now, only the diffusion).
1220    
1221    checkpoint58x_post
1222    o IO option for global-file compact format:
1223      - add options when generating topology (utils/exch2/matlab-topology-generator)
1224      - add I/O capability (pkg/mdsio).
1225      - adapt utils/matlab/rdmds.m to read this format.
1226      for now long-line format not yet supported by pkg/mdsio (& exch2).
1227    o shelfice: add a few diagnostics
1228    
1229    checkpoint58w_post
1230    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1231      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1232      (and replace horiVertRatio in NH code).
1233      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1234                         and tutorial_plume_on_slope (sensitive to truncation)
1235    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1236      directly to drive seaice model (C-grid only)
1237    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1238     - reintroduce computation of wind from stress,
1239     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1240       mass points to avoid tau = 0
1241     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1242    o rdmnc.m: make it work with "global" files created with gluemnc
1243    o rdmnc.m : some improvements in dealing with singleton dimension
1244      (tested on all testreport mnc output files).
1245    o genmake2: disable pkg/profiles if netcdf test fails.
1246    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1247    o move call to cal_readparms up to make calendar parameters/variable available
1248      to all packages
1249    
1250    checkpoint58v_post
1251    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1252      useDynP_inEos_Zc tested.
1253    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1254    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1255      and portions thereof.  See read_cs.txt for description and examples.
1256    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1257      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1258      following the great-circle arc between those 2 points.
1259    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1260      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1261    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1262     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1263     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1264     - still needs work (not working with some options ; efficiency to improve)
1265       and serious testing.
1266     - use this scheme for temperature & salinity in 2 advection test exp.:
1267       advect_xy & advect_xz, respectively.
1268    
1269    checkpoint58u_post
1270    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1271    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1272    o testreport: add option "-skipdir" to skip some test.
1273    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1274      momentum calculation.
1275    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1276    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1277      remove checkpoint.F and the_correction_step.F (no longer used);
1278      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1279    o add option (linFSConserveTr) to correct for tracer source/sink due to
1280      Linear Free surface
1281    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1282    o pkg/thsice: fix reading mnc-pickups
1283    
1284    checkpoint58t_post
1285    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1286    o pkg/mdsio:
1287     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1288       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1289       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1290     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1291     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1292       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1293     - new S/R (to replace MDSWRITEMETA), which allows to write more
1294       informations (variable names, time ...) to meta files.
1295     - modify rdmds.m to give back the meta file content.
1296    o pkg/diagnostics: change vertical interpolation to be safer, and more
1297       flexible (define p-levels to interpolate to in data.diagnostics);
1298      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1299       diagnostic pointer.
1300    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1301    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1302    o fix multi-category seaice:
1303     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1304       SEAICE_MULTICATEGORY
1305     - fix short wave heat flux
1306    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1307       and allow to use EVP solver. Change forward lab_sea: test both EVP
1308       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1309    o Initial check-in of lab_sea adjoint
1310      (very similar to natl_box_adjoint/code_seaice)
1311      * used C-grid and EVP solver
1312      * used KPP, GM/Redi
1313      * uses inAdExact=.TRUE.
1314      * gradient checks fail for both ADM and TLM
1315        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1316        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1317        issue is related to forward mismatch between g77 an ifort
1318    o pkg/seaice: overhaul of thermodynamics
1319     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1320     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1321     - move a few global fields out of SEAICE.h into seaice_growth.F and
1322       make them 2D (FICE/QNETO/ ...)
1323     - remove FO (it is the same as QNETO)
1324     - introduce a few local fields to avoid modifying external fields such
1325       as atemp, etc.
1326    
1327    checkpoint58s_post
1328    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1329      changed exf_set_gen.F so that
1330        genperiod=0 means input file is one time-constant field and
1331        genperiod=-12 means input file contains 12 monthly means
1332    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1333      this affects truncation error ; generate new output file for exp. which
1334      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1335        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1336        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1337        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1338        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1339        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1340    o start implementation of deep-atmosphere and anelastic formulation
1341    o verification: remove 2nd copy of input files and use script "prepare_run"
1342      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1343    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1344    o profiles: fix for multithreaded case
1345    
1346    o diagnostics: rename few diags:
1347      s/'PRESSURE'/'RCENTER '/g
1348      s/'TICE    '/'oceFreez'/g
1349      s/'TAUX    '/'oceTAUX '/g
1350      s/'TAUY    '/'oceTAUY '/g
1351      s/'SWFLUX  '/'oceQsw  '/g
1352      s/DIFx/DFxE/g
1353      s/DIFy/DFyE/g
1354      and add few ocean-forcing diagnostics:
1355      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1356    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1357      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1358      as actual snow thickness.  It now refers everywhere to effective snow
1359      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1360    
1361    checkpoint58r_post
1362    o modifications to pkg/seaice/growth.F, which change results of
1363      lab_sea experiment: fixes pertain to melting snow over open water, to
1364      masking EVAP under sea ice, and to using the correct AREA variable for
1365      computations of EVAP, PRECIP, HSNOW, and GHEFF
1366    o add ability to read bathy, salt, and theta using MNC (off by def)
1367    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1368      both are turned off by default and do no change any results
1369    o seaice advection with pkg/thsice: a step toward the use of non-linear
1370      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1371    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1372      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1373      in natl_box (affects results @ truncation level: update output.txt)
1374    o multi-threading and IO:
1375      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1376      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1377        (needed to work with SingleCpuIO): tested in all verif. exp.
1378    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1379      affects the results (but none of the verification test uses this scheme).
1380    o Adding some pkg/diagnostics capability to pkg/seaice
1381      (will certainly be subject to changes)
1382    o ctrl: adding new control variables:
1383      lwflux, lwdown, evap, snowprecip, apressure, runoff
1384    
1385    checkpoint58q_post
1386    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1387      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1388      high_res_cube configuration by 4% on Columbia.
1389    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1390      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1391      dynamical allocation (seems to work in multi-threaded).
1392    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1393      single CPU io) so that TAF does not have to see EESUPPORT.h
1394    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1395    
1396    checkpoint58p_post
1397    o obcs: stop if obcs is used with useCDscheme = .true.
1398    o shelfice:
1399     - fix a sign error so that no slip at shelfice interface works
1400     - remove stop for combination non-hydrostatic code and shelfice. That does
1401       not mean, that the results are correct, but at least they are numerically
1402       stable
1403    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1404    o added adjoint exch routined for all exch*3d* routines
1405      and updated flow directives
1406    
1407    checkpoint58o_post
1408    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1409      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1410    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1411      and clean-up reading/writing of pickup files.
1412    o fix local version of read/write pickup (NH part) in rotating_tank/code
1413    o simplify EXCH interface:
1414     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1415     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1416    o added the regrid package
1417    o shelfice:
1418     - add a simple boundary layer scheme to reduce noise
1419     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1420    
1421    checkpoint58n_post
1422    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1423       local variable (not in common block).
1424    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1425      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1426      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1427        to work with SingleCpuIO.
1428    o add "_d 0" to real constant of pkg/cfc subroutines ;
1429       update exp. cfc_exemple & tutorial_cfc_offline output files.
1430    o multi-threading and IO:
1431      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1432        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1433      - barrier before and after reading.
1434      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1435      - avoid using MDS_WRITELOCAL for LAND pkg output.
1436      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1437        common-block variables ; Allows multi-threading with master-thread IO.
1438    o change default MAX_NO_THREADS from 32 to 4 ;
1439      and stop cleanly when MAX_NO_THREADS is too small.
1440    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1441    
1442    checkpoint58m_post
1443    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1444       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1445    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1446       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1447       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1448    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1449        add MITgcm_tutorials (= code + all the tutorials)
1450    o ecco, option to compute cost for total ssh (mean+anom)
1451    o consistent with addition of ptracer and ssh in pkg/profiles
1452    o profiles: adding ptracer and ssh
1453    o testreport: change multi-test output-file name
1454      (from output.txt.{name} to output.{name}.txt)
1455    o profiles: now ok for mutli-tiles case
1456    o seaice: add 4 parameters for different advection schemes for area,
1457      (effective) seaice thickness, enthalphy, and snow height. Their default
1458      is the standard parameter SEAICEadvScheme
1459    o calc_gw:
1460     - add cosFacU in zonal viscous flux (harmonic.visc.).
1461     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1462       of tutorial_plume_on_slope.
1463    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1464    o calc_gw: true flux-form, account for horizontal grid spacing.
1465      update rotating_tank results, but not plume_on_slope (affected at
1466      truncation level, 11 digits).
1467    
1468    checkpoint58l_post
1469    o calc_gw:
1470     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1471     - remove side-drag for now (need to fix it); update plume_on_slope results.
1472     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1473    o commit code to make SST/SSS weights spatially variable
1474      (based on either variable in-situ or variable initial T/S weights)
1475    o pkg/ecco:
1476      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1477        now based on horizontally varying weights wthetaLev, wsaltLev
1478      * cost_averagesflags now returns year indices in addition to day, month
1479      * sflux balance is performed on annual basis
1480        (sflxumm, sfluxmm2, bal_sfluxmm)
1481      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1482        including separate counting and multipliers
1483    o pkg/rbcs
1484      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1485    
1486    checkpoint58k_post
1487    o testreport:
1488     - always build in dir. "build" (if not there, mkdir build instead of building
1489       & running in input)
1490     - run in dir run (if it exists), in build otherwise.
1491     - call prepare_run (if input/prepare_run exists)
1492     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1493    o pkg/exf modifications to interpolation and rotation routines for more
1494       reasonable treatment of North Pole singularity: for tracers North Pole
1495       value is set to northernmost zonal-mean value, for zonal velocity it is
1496       set to zero, and for meridional velocity it is set to northernmost value.
1497    o pkg/exf/exf_check_range.F
1498     - add tile index to diagnostics and move stop statement to the very
1499       end of the routine.
1500    o pkg/diagnostics: (diagnostics_main_init.F)
1501      define title of isomorphic variables according to the current config.
1502    o pkg/thsice with pkg/seaice dynamics:
1503    - fix domain of computation (interior only, required for exf) and do exchanges
1504    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1505    o towards a standard way of dealing with multi-threading in MONITOR
1506      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1507    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1508       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1509    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1510    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1511    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1512       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1513    o tracer advection:
1514     - clean-up and simplify calc_common_factors.F
1515     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1516       advection subroutine (but still not used within DST advection S/R)
1517    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1518    
1519    checkpoint58j_post
1520    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1521      from file (collects calls previously in FORWARD_STEP)
1522    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1523    o adjoint store dir. adjusted accordingly
1524    o genmake2
1525      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1526    
1527    checkpoint58i_post
1528    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1529      on wind stress (SEAICEstressFactor defaults to 1.)
1530    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1531      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1532    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1533      on CS-grid: no longer loosing mass.
1534    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1535    o pkg/ggl90: fix sloppy output and fix a bug
1536    o pkg/seaice: added SEAICEuseEVPpickup parameter
1537      - Set to false in order to start EVP solver with
1538        non-EVP pickup files when using SEAICEuseEVP
1539      - fix sign error in diffusion in seaice_calc_rhs
1540    
1541    checkpoint58h_post
1542    * Modifications for bottom topography control
1543      o replace hFacC by _hFacC at various places
1544      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1545      o add non-self-adjoint cg2d_nsa
1546      o update autodiff support routines
1547      o re-initialise hfac after ctrl_depth_ini
1548      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1549    * Adding verification for 5x5 box (4-layer) bottom topography control
1550    
1551    checkpoint58g_post
1552    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1553       used for mean seasonal cycle, mean diurnal cycle); add an example
1554       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1555    o pkg/ggl90:
1556      - add parameter (minimum surface kinetic energy)
1557      - fix bug (avoiding division by zero)
1558    o couple pkg/thsice to pkg/seaice:
1559      - modify advection in seaice to accomodate new scalar fields to be advected
1560      - only muliDimAdection scheme work with seaice/thsice
1561      - mapping of thsice-variables to seaice-variables, back and forth
1562      - does not break the verification experiments, but does not give the
1563        desired results either
1564    o pkg/seaice
1565      - make (default) second order advection a bit less confusing?
1566    
1567    checkpoint58f_post
1568    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1569      to pkg/seaice):
1570      - new routines thsice_map_exf and thsice_get_exf provide the interface
1571      - add an additional formal parameter to thsice_solve4temp
1572    o pkg/exf:
1573      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1574      - correct Stefan-Boltzmann constant
1575      - new parameter for longwave surface emittance
1576      - separate some stuff from exf_bulkformulae into new routines  
1577        exf_radiation, exf_wind
1578      - add new parameters and constants: longwave emissivity for ocean, ice
1579        and snow, evaporation parameters over ice
1580      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1581        either wind from stress or stress from wind
1582    o pkg/thSIce:
1583    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1584    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1585       and THSICE_CALC_THICKN
1586    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1587    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1588      to make debugging easier.
1589    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1590    o pkg/bulk_force:
1591      - clean-up comments and parameters ;
1592      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1593    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1594      generate new output for test-experiment: aim.5l_cs.thSI
1595    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1596      testreport accordingly
1597    
1598    checkpoint58e_post
1599    o SEAICE_CGRID adjoint done
1600    o R_STAR adjoint implemented.
1601      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1602      * need to sort out init. of h0facc, etc.
1603    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1604      to be able to use it in pure forward.
1605    
1606    checkpoint58d_post
1607    o upgrade simple test-experiment to tutorial example:
1608     step.1: duplicate the experiment and (step.2) will remove the old copy.
1609      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1610      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1611      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1612      tutorial_global_oce_biogeo    <- copy of dic_example
1613      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1614      tutorial_plume_on_slope       <- copy of plume_on_slope
1615      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1616      tutorial_global_oce_optim     <- empty for now (David ?)
1617      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1618     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1619    o correct a sign problem in cost_scat.F
1620    o obcs and ptracers: fix boundary conditions for advections schemes
1621      with larger stencil
1622    o thsice adjoint: start
1623    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1624      completeness
1625    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1626      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1627    o ptracers adjoint:
1628      * avoid extensive recomputatations
1629      * fix missing re-init. of gptr (missed by TAF)
1630    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1631      me to turn off the excessive output to STDOUT that this package produces
1632    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1633      and add those terms in Vector-Invariant formulation.
1634    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1635      if the control period (xx_hfluxperiod etc) is 0
1636    o in profiles pkg, clean routines and fix details
1637    o in ecco pkg, reading ssh data:
1638      fix problem in case the model does not start at iter0=0
1639    o fix mnc-pickup/restart for ptracers
1640    o new package prifiles:
1641      code to compute profile-based cost by Gael Forget
1642      (modifs in ecco, ctrl, autodiff)
1643    o Benign bug fix in initialization (spotted by M. Mazloff) of
1644      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1645    
1646    checkpoint58c_post
1647    o adjoint: finish NLFS adjoint and provide reference output in
1648      verification/global_ocean.90x40x15/results_ad_nlfs
1649    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1650      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1651      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1652      with SEAICE_CGRID defined.
1653    o move calendarDumps from "data" to "data.cal" and clean-up the code
1654      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1655    o add useEXF & useCAL flags (for now, set in hard-coded way)
1656    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1657      (were missing in NH mode, and wrong in quasihydrostatic mode).
1658      waiting for Chris updated version of calc_gw to add those CALLs.
1659    o fix bug in quasihydrostatic S/R ;
1660      add a test for this option: global_ocean.90x40x15.qshyd
1661    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1662      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1663    o add on/off flag useOffLine for package OFFLINE
1664    o seaice:
1665      - modify advection so that it works also on the C-grid
1666      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1667        problem in multi-tile runs with C-grid
1668      - add flags for clipping ice velocities and/or masking solver forcing
1669      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1670        C-grid solver
1671      - added a few comments to seaice_diffusion.F
1672      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1673        are now exclusive)
1674      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1675        required re-ordering the code a little:
1676       + make DAIRN global variable (defined in SEAICE)
1677       + move computation of the viscosities eta and zeta into a new separate
1678         routine (because I need to recompute them in seaice_ocean_stress.F)
1679    
1680    checkpoint58b_post
1681    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1682      update output.txt of exp. aim.5l_cs.thSI
1683    o various mnc cleanups and improvements:
1684      + shrink lookup tables by factor of ~4
1685      + better error reporting when running out of lookup space
1686      + able to handle longer path/file names (up to 500 chars)
1687    o adjoint:
1688      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1689      - TBD: "hidden" mom_vecinv recomp. in dynamics
1690    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1691     (allow to differentiate between forcing components using new integer flags:
1692      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1693     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1694    o ecco
1695      - enable trend removal from SSH anomaly obs.
1696    o adjoint
1697      - a fix for PmEpR when #undef EXACT_CONSERV
1698      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1699      - try to fix "hidden" recomp. in forward_step for NLFS
1700        (NLFS seems broken sometimes after I checked it in)
1701    o seaice:
1702     - add c-grid version of the dynamic solver:
1703       + three new routines that are the c-grid substitute lsr, dynsolver
1704         and ostres
1705       + put a few fields that were local to dynsolver into global common
1706         blocks, so that I can move the computation of stresses etc into
1707         seaice_lsr (saves coding but may break the adjoint).
1708     - replace more hardwired parameters by runtime parameters
1709     - add ice masks that mask the rhs of the implicit solvers where there
1710       is no ice (commented out in seaice_dynsolver, because i am not sure
1711       if this works properly), eventually this should replace the clipping
1712       of ice velocities in seaice_dynsolver to +/-40cm/s.
1713    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1714      include it only where its needed
1715    o move balancing of fluxes before the call of external_forcing_surf
1716    o seaice:
1717      - correct units of turning angles (now they are really in degrees)
1718      - move computation of GWATX/Y out of main routine into dynsolver
1719      - initialize GWATX/Y in seaice_init
1720    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1721      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1722    o seaice: add runtime flags for turning angles (default to zero)
1723    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1724      and trend from exf forcing and ctrl control adjustments
1725    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1726      (since checkpoint57x_post)
1727    o change the default rotation period to 86164.s = the Earth rotation
1728    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1729      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1730    o seaice advection: add code for choosing between the default (2nd order
1731      central differences) and multiDim advection schemes provided by
1732      pkg/generic_advdiff
1733    o seaice:
1734      - removed all references to SEAICE_GRID.h fields from
1735        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1736        (cubed-sphere configuration will change a little)
1737      - grid computations in seaice_init are obsolete now.
1738      - cleaned up code a little so that is easier to read (hopefully).
1739      - added new (better?) discretizations of default advection and diffusion
1740        (turn on with SEAICEuseFluxForm)
1741      - replace 1 in 3d global fields by kSurface in growth.F
1742      
1743    checkpoint58a_post
1744    o seaice:
1745      - bug fix in advect.F
1746    o shelfice:
1747      - separate shelfice load anomaly from pload (breaks with time
1748        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1749        Its default is 0., but it may be computed more cleverly from (unknown)
1750        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1751        done offline. A good approximation of the pressure load anomaly is
1752        necessary to avoid large initial adjustment processes underneath
1753        deep-reaching shelfice.
1754      - small fix in ISOMIP shelfice_thermodynamics
1755      - add more sophisticated thermodynamics of Hellmer (1989), this is
1756        now the default
1757      - give a few constants more intuitive names
1758    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1759      if bulk formulae are used in long integration (especially EmPmR). Turn
1760      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1761      if balancePrintMean, the imbalance that is substracted is printed to
1762      STDOUT.
1763    o fix bug (typo) in obcs_apply_eta.F
1764    o add a new package shelfice which enables us to model the circulation
1765      underneath shelf-ice with draughts of hundreds of meters.
1766     - works
1767     - to do: + include improved thermodynamics
1768              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1769                instead of new field kTopC
1770              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1771                instead of new field R_shelfIce and new code in ini_depth.F
1772                and ini_mask_etc.F?
1773              + adjust vertical mixing schemes?
1774    o seaice pkg:
1775     - add a cpp-flag to include a simple formula for a salinity dependent
1776       freezing point of sea water at the surface
1777     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1778       meridional stresses are now different (and hopefully correct)
1779    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1780       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1781       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1782    o pkg/diagnostics: add options and parameters for regional-statistics
1783       diagnostics ; define regions by reading a region-mask from a file
1784       (might add other options later)
1785    o pkg/bulk_force:
1786     - add option and parameters to use AIM surface-flux formulae.
1787     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1788       others forcing fields (defined in PARM05, parameter file "data") are loaded
1789       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1790     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1791     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1792     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1793       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1794     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1795    
1796    checkpoint58
1797    o add "--embed-source" option to genmake2 which, when the supporting
1798      tools can be compiled (as determined by genmake2) will turn on the
1799      embed_files package which then embeds the entire MITgcm source code
1800      (*.[fFhc] + Makefile) used for the build within the executable
1801      - requested by CNH but off by default
1802      - adds a paltry <9MB to the mitgcmuv executable in most cases
1803      - only writes the output when useEMBEDSRC in eedata is true
1804    o clean up 3-dim. relaxation codes:
1805      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1806      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1807      * Thanks to Tom Haine for testing!
1808    
1809    checkpoint57z_post
1810    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1811      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1812    o fix the pickup behavior for obcs in combination with ptracers
1813    o fix a bug in ptracers_external_fields_load
1814    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1815      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1816    o transfered surface NH pressure to eta field (if exactConserv).
1817    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1818         and update lab_sea output.txt file.
1819    o completing 3-dim. relaxation code: additional term
1820         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1821      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1822      * At compile time, in "EXF_OPTIONS.h" set
1823          #define  ALLOW_CLIMTEMP_RELAXATION
1824          #define  ALLOW_CLIMSALT_RELAXATION
1825      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1826          tauThetaClimRelax3Dim = 15552000.0,
1827          tauSaltClimRelax3Dim  = 15552000.0,
1828      * 3 cases:
1829          1) Use a constant-in-time 3-dim. field
1830          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1831          3) Real-time relax. to time-evolving prescribed field
1832    o Adding Laplacian-type smoothness constraint on
1833      initial and boundary (forcing) controls (ic, bc)
1834      * enable at compile-time via
1835        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1836      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1837      * Absolute scale somewhat unclear so far
1838      * no area weighting was included since no other cost term does so far
1839    
1840    checkpoint57y_post
1841    First step for a NLFS adjoint
1842    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1843    o new init. routines for calc_r_star, calc_surf_dr
1844    o still need to deal with ini_masks_etc
1845    o testreport seemed happy
1846    checkpoint57y_pre
1847    
1848    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1849    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1850    o add new offset feature to offline pkg (plus minor cleanup)
1851    o cfc fixes for final year of integration
1852    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1853      be in GCHEM_OPTIONS).
1854    
1855    checkpoint57x_post
1856    o fix testreport Pb in multiple test experiment.
1857    o cleanup our namelist syntax in verification:
1858      - make it more F95 standards compliant (some work still needed)
1859      - allows the vast majority of our tests to work with gfortran
1860    o Non-Hydrostatic:
1861     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1862     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1863    o Allow to apply AB on T,S rather than on AB(gT,gS):
1864     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1865     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1866       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1867     - need a "clever" read_pickup to restart from the other AB formulation
1868    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1869    o remove some unused variables (reduces number of compiler warnings)
1870    o adjoint
1871      * Disable useVariableViscosity for adjoint for time being
1872        (there are a number of extensive recomputations)
1873      * Initialize certain variables needed for adjoint
1874    
1875    checkpoint57w_post
1876    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1877                 fix the singleCpuIO RS version of MDSWRITEFIELD
1878       and add a WARNING if using globalFiles=T with multi-processors.
1879    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1880      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1881    o tracer advection scheme:
1882      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1883       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1884       was not very convenient).
1885      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1886       (further tests needed for the implicit DST & Flux-Limiter schemes).
1887    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1888      and sRef for convenience, handy, when you want to initialize
1889      ptracers in a large domain with a constant non-zero value. Also,
1890      untangle ptracers_init.F a little.
1891    
1892    checkpoint57v_post
1893    o change dome exp. to use variable viscosity in side-drag terms.
1894    o remove all the files from the cfc_offline test since they are now
1895      incorporated into tutorial_cfc_offline which has been producing
1896      identical results for a few days of testing
1897    o add new parameter: sideDragFactor to enable half-slip-side BC
1898      and change side-drag S/R to use viscosity from mom_calc_visc
1899      (can switch back by setting sideDragFactor=0.); affects results at
1900      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1901       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1902    o vorticity & strain are now computed without masking, to account for
1903      no-slip-side BC in variable viscosity calculation ; mask is applied
1904      anyway later on, before computing advection/coriolis terms.
1905    o modify exp4 to test new obcs support for reading from external files
1906      and for passive tracers
1907    o fix behavior of ptracers_monitor when monitor output is written to a
1908      netcdf-file; still not independent of monitor.F (writes in the same
1909      file).
1910    o change default value of tRef (put a uniform, meaningful value for ocean
1911      & atmos) and initialize sRef (was missing, as Martin mentioned).
1912    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1913      to be proportional to enstrophy dissipation length.  Thus,
1914       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1915      This is now consistent with Smagorinsky and with the manual.
1916    
1917    checkpoint57u_post
1918    o OBCS and PTRACERS: add open boundary support for passive tracers
1919      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1920        OB-values from file; this is not different from the way theta and salinity
1921        are treated
1922      - however, Orlanski-radiation conditions are not supported, and the model
1923        will stop if you use pTracers and Orlanski at the same time.
1924      - beefed up the rountine obcs_external_fields_load: now only those open
1925        boundary values are overwritten with values from files for which there
1926        are really files, otherwise the OB-fields remain untouched. This makes
1927        it possible to use different OBs at different ends of the domain (as
1928        with EXF)
1929    o reduce number of exch calls in shap_filt (s2).
1930    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1931      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1932    
1933    checkpoint57t_post
1934    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1935    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1936      same truncation, independent of the face number: affects affects several
1937      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1938    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1939      note that biharmonic viscosity + no-slip was not tested in any experiment.
1940    o fix bug in non-linear free-surf side-drag ; generate new output for
1941      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1942    o make mnc honor the writeBinaryPrec flag for most kinds of output
1943    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1944    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1945      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1946    o add brackets in multi-terms sum to get same truncation, independent of
1947      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1948      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1949    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1950      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1951      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1952      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1953      Suggested values of viscosity parameters found in mom_calc_visc.
1954      Many new viscosity diagnostics available.
1955    
1956    checkpoint57s_post
1957    o Add clearing-house for viscosity calculations, mom_calc_visc and
1958      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1959      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1960      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1961      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1962      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1963      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1964      ViscAhStrain and viscAhTension are now retired.
1965    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1966    o In response to JMC's bug report, genmake2 now ignores any soft-links
1967      that it finds in the *current* directory when searching for files.
1968      Soft-links found in any other source directories will still work as
1969      they did before.
1970    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1971      a C routine to unlimit the stack size
1972    o mnc-ify pkg/aim snapshot vars
1973    o mnc-ify pkg/land as requested by Daniel
1974    o various changes to mnc including:
1975      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1976      - output can now be grouped so that all files within a group
1977          change the ITER portion of their names in lock-step together
1978      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1979          and works with both EXCH1 and EXCH2 (but needs more testing)
1980      - writing works for all verification test cases w/ g77 on Linux
1981    
1982    checkpoint57r_post
1983    o make MNC variable initialization happen earlier
1984    o add diagnostics for (almost) each term of the momentum Eq.
1985    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1986    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1987    o remove MINIMAL_TAVE_OUTPUT option ;
1988      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1989    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1990      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1991    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1992    o add time-dependent SST, SSS control
1993    o cost terms in ecco/ modularized (new cost_generic.F)
1994    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1995    o new infrastructure for seaice model vs. obs misfits in seaice/
1996      * driver from the_main_loop.F is seaice_cost_driver.F
1997      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1998      * gradient check in Exp. 6a of natl_box_adjoint/
1999    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
2000      (see README file)
2001    
2002    checkpoint57q_post
2003    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
2004    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
2005      - bug was reported by Jean-Michel and Ian Fenty
2006    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
2007      update exp. cpl_aim+ocn output.
2008    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
2009      Needed for high-res. runs with large global files
2010      to be able to limit tapelev size
2011    o Changed some tests for adjoint:
2012      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
2013      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
2014      * global_ocean.90x40x15/ back to default 3-level checkpointing
2015    o Modifications to enable scripted COMMON to MODULE conversion
2016      * verification/OpenAD/code/ has necessary scripts and description;
2017      * converts, compiles and runs successfully;
2018    
2019    checkpoint57p_post
2020    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
2021    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
2022      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
2023    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
2024    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
2025      (was already the case for dissipation with mom_vecinv,
2026       and also the case for grad.PhiHyd when staggered-timeStep)
2027      This will allow to put dissipation out-off the AB time-stepping.
2028     Unfortunately, affects truncation error. Update output of exp. that "fails"
2029      (cg2d matching number) and leave the others for later: front_relax(10),
2030      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
2031      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
2032    
2033    checkpoint57o_post
2034    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
2035      (2) its ready to be documented during the 20050801 DocFest
2036    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
2037      for ideal_2D_oce and lab_sea on linux_ia32_g77
2038    o set to #undef CTRL_SET_OLD_MAXCVARS_30
2039      in global1x1_tot/code_seaice_adj to access indices 32, 33
2040      (worth another tag)
2041    
2042    checkpoint57n_post
2043    o adding precip control xx_precip 32
2044    o adding swflux control xx_swflux 33
2045    o Replacing 10 forcing penalty cost routines by 1 generic.
2046    o Implementing partitioning in time-mean and variable adjustment
2047      for atmos. state.
2048    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
2049    o in natl_box_adjoint:
2050      * updated exp 1 to 10
2051        (but does not have time-mean vs. variable split results yet)
2052    o updated global1x1/*_seaice_adj/
2053      to incorporate latest changes
2054    o enable useSingleCpuIO for mdsio vector routines
2055      (applies in particular to tapelev I/O)
2056    o removed inefficient K-loop in all active_file*control*.F
2057    
2058    checkpoint57m_post
2059    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
2060      and advect_cs (use EXCH-2 and standard cs-32 grid files).
2061    o pkg/exch2: filling of face-corner halo regions is optional
2062      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
2063    
2064    checkpoint57l_post
2065     tag before updating tutorials (pre-release-2)
2066    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
2067       for output and interpolation of input fields onto model grid)
2068    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
2069       Affects results of exp. rotating_tank ; update output.txt.
2070    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
2071          and taking the square quantity and/or using a fraction-weight field.
2072    o fix aim_diagnostics_init.F mate numbers.
2073    o add mnc output capability to diagnostics/diagstat and update
2074      our cvsignore files for the ACSII output generated
2075    
2076    checkpoint57k_post
2077    o lab_sea now uses diagnostics package and provides a suite of
2078      new EXF diagnostics output.
2079    
2080    checkpoint57j_post
2081    o exf
2082      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
2083        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
2084        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
2085      * extended diagnostics output
2086        - now includes all EXF variables
2087        - hs, hl moved to common block
2088        - separate S/R for diagnostics, called after ctrl vector is added
2089        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
2090        - EXFqnet contains true Qnet (i.e. includes qsw)
2091      * updated verif. lab_sea, global_with_exf
2092      * Rearranging hflux (exf_mapfields -> exf_getforcing)
2093        to ensure that diagnostics sees a true EXFqnet
2094    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
2095    o diagnostics pkg: change pointers so that 1 diagnostic can be used
2096      several times with different frequencies.
2097    o mnc-ify the thsice package as requested by Daniel Enderton
2098      - the monitor--MNC output needs work
2099      - many attributes need to be added (most are currently blank)
2100    o mnc-ify theaim_v23 package as requested by Daniel Enderton
2101      - many attributes need to be added (most are currently blank)
2102    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
2103    o add Sadourny like discretization to the 4th.O vorticity advection scheme
2104    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
2105      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
2106         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
2107    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
2108     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
2109    
2110    checkpoint57i_post
2111    o Diagnostics package was changed: diagnostic allocation is now deactivated
2112      by setting an empty file name in the namelist (used to be by setting 0 frequency)
2113    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
2114      add 1rst Order upwind vertical Shear.
2115    o add a quick fix for A/B checkpointing in OFFLINE mode
2116    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
2117      end-run around the C/Fortran linking horror in eesup/src/timers.F
2118    o added pkg/runclock: allows user to terminate run based on wall clock
2119    o added non-hydrostatic scaling parameter: nh_am2
2120    o pkg/my82: futile attempt to make results compiler-independent by adding
2121      some "_d 0", etc. no effect.
2122    o for mnc output, fill the 'T' coordinate var with myTime and create a
2123      separate 'iter' variable for iteration count
2124    o pkg/diagnostics:
2125      add new capability: output of Global/Regional & per-level statistics ;
2126      tested against monitor output (including land & thSIce) on various exp.
2127    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
2128    
2129    checkpoint57h_done
2130      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
2131      data.diagnostics, data.gchem, data.ptracers) is done.
2132    
2133    o pkg/diagnostics: prepare for Global/Regional statistics.
2134      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
2135    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
2136      and rename it: DIFFERENT_MULTIPLE
2137    
2138    checkpoint57h_post
2139    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
2140    o pkg/diagnostics: change output frequency, now in seconds (instead
2141      of Nb of iterations). This requires to change data.diagnostics.
2142    checkpoint57h_pre
2143    
2144    o in mnc, let the user create the output dir if both mnc_outdir_date
2145      and mnc_outdir_num are false
2146    o add fflags() to pkg/diagnostics which allows one to specify, on a
2147      per-file basis, the file precision [default behavior is unchanged]
2148    o added diagnostics to pkg/kpp, including computation of mixed layer
2149      depth based on a temperature/density criterion
2150    o updated verification/natl_box to test the new pkg/kpp diagnostics
2151    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2152    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2153    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2154      not mnc -- this mistake was found by JMC and is now corrected
2155    
2156    checkpoint57g_post
2157    o add Adams-Bashforth 3rd Order time stepping:
2158      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2159      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2160    checkpoint57g_pre
2161    
2162    o make lambda[Theta,Salt]ClimRelax spatially varying
2163      (default remains spatially uniform constant based on tau)
2164    o added new control variables
2165      * init. uVel, vVel, etanN
2166      * lambda[Theta,Salt]ClimRelax
2167    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2168      (suggested by G. Forget)
2169    
2170    checkpoint57f_post
2171    o add parameter "baseTime" = model base time = time at iteration zero
2172      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2173      account for baseTime shift
2174    o move Coriolis arrays from PARAMS.h to GRID.h
2175    checkpoint57f_pre
2176    
2177    o mnc-ifying the seaice package
2178    o introduced an alternative length scale calculation for use in the limiting
2179      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2180    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2181    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2182      as well as grad(vort3).  Made it compatible with both approximate form
2183      for the cubed sphere and full form of these gradients.  Added flag
2184      useFullLeith to select between approximate and full form.  
2185    o add "d0" in getcon.F to reduce differences between compilers/platforms
2186      update output.txt of exp. fizhi-gridalt-hs
2187    o change port_rand funtion to allow to set the seed.
2188    o fix obscure MNC bug involving conversion between reals and integers
2189      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2190        new version is now more standards-compliant
2191    o adjoint-related modifications
2192      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2193      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2194      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2195    
2196    checkpoint57e_post
2197    o Adding eddy stress controls a la Ferreira et al.
2198    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2199    
2200    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2201      update output.txt of exp. fizhi-gridalt-hs
2202    o add more "Z" dimensions and associated coordinate vars to MNC
2203    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2204    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2205      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2206      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2207      months and years.  Requires pkg/cal.
2208    o diagnostics: add pickup functionality
2209      - off by default for backwards compatibility
2210      - current version only uses MDSIO -- MNC will be added
2211    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2212    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2213    
2214    checkpoint57d_post
2215    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2216    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2217      output from the diagnostics package
2218    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2219    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2220      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2221    o add coordinate variables to the MNC output from the diagnostics package
2222    o change MNC-flags default value: true when useMNC=TRUE
2223    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2224      the ability (off by default) to read the grid information using MNC
2225    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2226    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2227    o do snap-shot diagnostics at the middle of the time-interval (instead of
2228      at the end).
2229    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2230      new test for AIM with thSIce + slab-ocean
2231    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2232    o move state variable diagnostics to the beginning of the time step ;
2233      (note: still needs some work specially for snap-shot diagnostics)
2234      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2235    
2236    checkpoint57c_post
2237    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2238    o generate new output.txt files on faulks with g77 & the new -ieee option
2239    checkpoint57c_pre
2240    
2241    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2242      update output.txt of exp. global_ocean.90x40x15
2243    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2244      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2245    o add saltFlux(+File) forcing capability with periodicExternalForcing
2246    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2247    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2248    o improvements for the MNC output from DIAGNOSTICS:
2249      - correct handling of the unlimitied dimension
2250      - all dims now have associated coordinate variables
2251      - variables located at U, V, and Corner ("Z") points are now written
2252        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2253        *all* data points are output
2254    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2255    o added pkg/seaice/seaice_monitor.F
2256    o mdsio_readfield.F can now read files visible only to master MPI process.
2257    o pkg/seaice: some test code for ice-modified ocean stress
2258    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2259      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2260      spurious negative numbers for precipitation and humidity.  Will cause
2261      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2262    o pkg/ctrl/
2263      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2264        May be enabled via doPackDiag
2265      *  introduce z-scaling of
2266         + gradient (doZscalePack) and
2267         + control (doZscaleUnpack)
2268    o pkg/mdsio/
2269      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2270      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2271    
2272    checkpoint57b_post
2273    o simplify options in diagnostics_fill arguments (remove weird combinations)
2274    o fix MNC coordinate variables so that they now contain per-face index
2275      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2276      general, EXCH2 grids are only aligned to a "local" coordinate system
2277    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2278    o Implement instantaneous output within pkg diagnostics:
2279      setting a negative frequency in data.diagnostics produces
2280     "snap-shot" output (as opposed to time-average if freq > 0)
2281    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2282      NOTE: change ptracer diagnostics name: use 2 characters to work with
2283            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2284    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2285      becomes the coordinate variable for the 'T' dimension
2286    o add CF-style coordinate variables to MNC
2287      - just a first cut:  numbers are meaningless on the cubesphere and
2288        missing along the T axis but otherwise it works!
2289    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2290    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2291    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2292      this is based directly on what the model compute, so that the content of
2293      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2294    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2295    o clean up build options files for SunOS, in particular
2296      - remove -traditional from xmakedepend
2297      - change -xarch=v9 to -xarch=native for f77
2298      - restore use of make (not gmake)
2299      - add CC=gcc if using g77
2300    o changes per discussion of AM, JMC, & EH3 today:
2301      - move redundant "grid" variables out of "state" -- in preparation of
2302        creating proper CF-style coordinate variables and in recognition
2303        that any/all grid variables can be easily copied (eg. w/NCO) from
2304        the grid files into any of the other NetCDF files
2305      - *always* output grid variables with MDSIO (this will eventually be
2306        changed)
2307      - output MNC grid file if useMNC is true
2308    o every instance of _END_MASTER() has been found and replaced with
2309      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2310      preprocessors
2311    o re-arrange diagnostics pkg initialisation:
2312     - allow each package to extend the available diagnostics list
2313     - add some checking and fix small problems (multi-threaded, ...)
2314     - new S/R diagnostics_fill (replace fill_diagnostics):
2315       look through the short list of active diag. (instead of the long list)
2316       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2317    
2318    checkpoint57a_post
2319    o this set of changes restores TAMC compatibility
2320      tested for global_ocean.90x40x15 adjoint on trough
2321      (what a pain)
2322    
2323    checkpoint57a_pre
2324    o some modifs in tools/build_options for sunos
2325    o call ctrl_pack for ctrl at end for optimcycle=0
2326    
2327    checkpoint57
2328    o add horizontal bi-harmonic viscosity for vertical velocity
2329      - new parameter viscA4W (defaults to viscA4)
2330      - affects only non-hydrostatic code
2331      - to be done: no-slip lateral boundary conditions
2332    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2333    o implement Implicit Vertical advection for pTracers
2334    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2335      (implemented also for implicit vertical diffusion & advection)
2336    o OBCS: extend application of tracer open boundary conditions
2337      to a strip beyond the boundary of width Olx/Oly
2338    o add call monitor to TAF set of required calls (flow directives)
2339      and include in natl_box_adjoint
2340    o untangle a few ifdefs related to cost, ctrl, autodiff
2341      untangel a few ALLOW_ECCO_OPTIMIZATION
2342    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2343      (theta2, salt2 in ecco_cost_weights)
2344    
2345    checkpoint56c_post
2346    o OBCS as control variables
2347      - update ctrl_ad_diff.list, obcs_ad_diff.list
2348      - remove balance of obcs controls from default
2349      - fix index bug nobcs in ctrl_init
2350      - fix dummy fields filen in ctrl_pack
2351      - add dummy weights for obcs
2352    o lsopt: comment out fort.94 output
2353    o optim:
2354      - remove unnecessary header files
2355      - adjusted namelists
2356      - add xerbla.F to Makefile
2357    o exf:
2358      - multiple modifications of exf_check_range
2359      - unit change in exf_init_runoff from [m/year] to [m/s]
2360    o mdsio:
2361      - i/o-vector change debugLevel from debLevA to debLevB
2362    
2363    checkpoint56b_post
2364    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2365      is called from DO_THE_MODEL_IO
2366      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2367      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2368      - clean up PTRACERS_WRITE_TIMEAVE a little
2369    o add another verification experiment that tests both the cfc-pkg and
2370      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2371      reactive tendencies treated inline with regular timestepping
2372    o testreport previously did a lousy job of comparing small numbers, so
2373      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2374      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2375      testreport.
2376    o ptracers_monitor: bug fix for MPI
2377    
2378    checkpoint56a_post
2379    o GCHEM: finish reorganizating the package
2380      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2381        (introduces another 3D-array for each passive tracer, but only if
2382        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2383        gchemTendency is not needed because the timestep is done separately)
2384      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2385      - GCHEM is now---more or less cleanly---separate from PTRACERS
2386      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2387        so clear to me how that should be done in a general way.
2388    o CFC: improve formatting of output in CFC_ATMOS
2389    o PTRACERS:
2390      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2391        that ALL experiments with ptracers enable can be checked. This makes
2392        GCHEM_MONITOR obsolete.
2393      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2394        monitorFreq
2395      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2396    o add PTRACERS (PTR0[1-5]) to testreport output
2397    o exf_check_range:
2398      * default changed to .TRUE.
2399      * will check values for niter0 if debLevA, every timestep if debLevB
2400      * STOP in exf_check_range if 'out of range'
2401      * range chosen generous to allow for potential extema
2402      TBD: a version with stricter range
2403           permitted range would be runtime parameters
2404    o GMredi:
2405      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2406      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2407      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2408    o GCHEM:
2409      - move call to GCHEM_FORCING_SEP, so that it is now called before
2410        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2411      - introduced a useGCHEM runtime flag and applied it everywhere.
2412      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2413        this flag is now only visible within GCHEM-pkg routines.
2414      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2415        be replaced by a 3D array that is computed before thermodynamics; for
2416        this, the tracer ID iTracer had to be included into the parameter list
2417        of ptracers_forcing
2418      - set up forward_step to call gchem_forcing, that will replace
2419        gchem_forcing_int in ptracers_forcing
2420      - cleaning up
2421    o small cleaning of exch2: remove files that are also in eesupp/src
2422    
2423    checkpoint56
2424    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2425    o mnc: cleanup "full" files--fixes out-of-memory problem
2426    o ECCO-GODAE
2427      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2428      * fully merged and updated from SIO code
2429        windstress sign change affects
2430        - exf_inscal_[u/v]stress
2431        - sign of xx_tau[u/v] adjustments
2432        - signs in cost_scat
2433      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2434      * natl_box_adjoint updated and compressed
2435      * 2-level checkpoint switch added
2436        (tested in EXP. 1 of natl_box_adjoint)
2437      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2438    o SVD
2439      * first complete, non-hacked version for SVD calculations
2440      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2441        performed via direct access files admtlm_vector.it????
2442        (via ctrl_[un]pack)
2443      * optimcycle is used for ARPACK iteration counter
2444        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2445      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2446        and add linear transforms where necessary
2447      * controls are initial/final SST, SSS (can be extended; need to check
2448        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2449    o mdsio: filename info to both stderr, stdout
2450    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2451      from sign change
2452    
2453    checkpoint55j_post
2454    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2455      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2456    o add consistent build directories and .cvsignore files to verification
2457    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2458    o make all subroutines 30 or less characters in length for certain older
2459      compilers to work (a thorough search only turns up two routines in
2460      pkg/ptracers)
2461    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2462      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2463    
2464    checkpoint55i_post
2465    o change arrays for total vertical diffusivity (2.D if explicit,
2466      3.D if implicit) ; each ptracer uses its own background value.
2467    o added mnc/NetCDF output capability to ocn_compon_interf
2468      - added bits to verification/cpl_aim+ocn so that it can run on
2469        ITRDA and other clusters without the mpirun "-wd" option
2470    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2471      configuration
2472    o give MNC the ability to create additional files rather than
2473      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2474      - the default is just less than 2GB which is a practical limit
2475        on many systems
2476    o Compute the non-local term using either KPP vertical diffusivity (=default)
2477       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2478    
2479    checkpoint55h_post
2480    o add verification test "vermix"
2481    o remove all the *_ioinc flags and replace with the single global
2482      outputTypesInclusive flag
2483    o allow to set a vertical profile of vertical diffusivity for T & S
2484    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2485    o useMNC moved from data.mnc to data.pkg
2486    
2487    checkpoint55g_post
2488    o Renaming carbon AD experiments to comply with testreport conventions
2489    o Updating adjoint of Held-Suarez hs94.1x64x5
2490    o Fixing directives for non-ECCO forward_step, after ECCO directives
2491      have been fixed to avoid recomp. of do_oceanic_phys
2492      Works well for global_ocean.90x40x15,
2493      but recomp. issue remains for carbon
2494    o Updating adjoint output for natl_box_adjoint after
2495      pkg/ecco has been modified (see taga c55d_post)
2496    
2497    checkpoint55f_post
2498    o rename to timeave_init_fixed
2499    
2500    checkpoint55e_post
2501    o some delicate re-shuffle of store directives to avoid one
2502      extra call of do_oceanic_physics
2503      affects ecco_the_main_loop.F, do_oceanic_physics.F
2504      checkpoint_lev1_directives.h
2505    o NB: this may break global_ocean adjoint temporarily,
2506      but it is clear how to fix it. Will do later, need this now.
2507    
2508    checkpoint55d_post
2509    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2510    o ecco_cost_weights is modified to 1x1 runs
2511    o modifs to allow observations to be read in as
2512      single file or yearly files
2513    o enable to read exf forcing fields as either
2514      single file or yearly files (flag useExfYearlyFields)
2515    checkpoint55d_pre
2516    
2517    o switch between 2-level and 3-level checkpointing
2518    o add ability of MNC to write local and "partial" (eg. 2D slices where
2519      the full 3D field is never actually stored) arrays to NetCDF files
2520      with the correct (that is, the complete multi-dimensional) set of
2521      array indicies
2522      - used in mom_vecinv() to write the diagFreq output
2523      - tested (demonstrated) in verification/aim.5l_cs
2524    o further mnc-ification
2525      - add verification/lab_sea to the list with mnc setups
2526      - fix undefined mnc v-names in cd_code
2527      - add kpp to mnc output (both snapshot and timeave)
2528    o non-hydrostatic code
2529      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2530        in calc_gw.F
2531      - defaults to viscAh
2532      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2533        friction or Leith) in non-hydrostatic mode, as long as there is
2534        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2535    o pkg/cost
2536      extend simple cost functions to treat time mean quantities
2537      (T,U,V) via cost_accumulate_state from cost_tile
2538    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2539        be 2 times larger than the minimum size the advection scheme requires.
2540        now get a perfect conservation of salt in advect_cs test-exp (updated)
2541    o GGL90 (Gaspar's TKE mixed layer)
2542      - add horizontal diffusion of TKE, requires exchanges in
2543        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2544        default. In OPA there is no horizontal diffusion of TKE but the
2545        mixing coefficients are computed from a horizontal average of TKE of
2546        6 points or so. I think that diffusion has a little more physical
2547        justification.
2548      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2549        was in vain)
2550      - mask tke-variable in ggl90_init
2551    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2552    o fix biharmonic diffusion on CS-grid.
2553    o more obcs stuff
2554      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2555        for reading boundary values. This routine is called from
2556        obcs_prescribe_read
2557      - updated obcs_check
2558      - changed sponge layer relaxation parameter units for days to seconds
2559      - turned off sponge layer by default
2560      - changed argument list of OBCS_CALC to myTime+deltaTclock
2561      - fixed about 35 bugs in obcs_external_fields_load
2562    
2563    checkpoint55c_post
2564    o obcs stuff
2565      - new runtime flags useOBCSprescribe, useOBCSbalance
2566      - re-arranged obcs_calc
2567      - moved exf_getobcs to obcs_prescibe_read
2568        obcs_prescibe_read is called after ORLANSKI stuff
2569        and independent of it (executable can contain all).
2570      - updated obcs_check
2571      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2572        These may be necessary only if tangential velocities are
2573        prescribed at OB, not sure, needs testing.
2574    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2575      which simplifies the calls and passes the ifc check-bounds test
2576    
2577    checkpoint55b_post
2578    o add a 2D scalar, Z location, exchange_2 routine.
2579    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2580      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2581      affects advect_cs results (for the wrong reason): update output.txt
2582    o use a more standard discretization for biharmonic viscosity ;
2583     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2584      affects results of dome set-up: update output.txt
2585    o fix gad_advection.F (CubedSphere part), back to version 1.23
2586    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2587    
2588    checkpoint55a_post
2589    o merged code to
2590      * prescribe/read time-dependent open boundaries
2591        (works in conjunction with exf, cal)
2592      * sponge layer code for open boundaries
2593      * each boundary N/S/E/W now has its own CPP option
2594        (healthy for the adjoint)
2595    
2596    checkpoint55
2597    o up-to-date adjoint of previous breaks
2598      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2599      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2600      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2601      - carbon: * remove tr1-related adjoint verification
2602                * add ptracer as control variable
2603    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2604      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2605    
2606    checkpoint54f_post
2607    o in verification/carbin/ remove experiment related to
2608      ALLOW_PASSIVE_TRACER (array tr1 etc)
2609      code_ad/ input_ad/ results_ad
2610    
2611    o add two new packages
2612      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2613        + subject to optimization (memory)
2614      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2615        + subject to reordering (many GOTOs in the original code)
2616        + so far opps is called for every (i,j) point, and then operates in
2617          the vertical; one may want to reorder the scheme in order operate in
2618          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2619          fields)
2620    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2621      - all verification tests compile and run with linux_ia32_g77
2622      - defaults are compatible with current input files--nothing
2623        should change if you were not previously using MNC
2624      - MNC output has been added in numerous places (eg. timeave)
2625        but there are still a few writes not yet do-able with MNC
2626        (this is in progress)
2627      - flags now allow for either/or/both use of MDSIO and MNC and
2628        documentation will soon follow
2629      - numerous small formatting cleanups for ProTeX
2630    o add version info (via BUILD_INFO.h) to MNC and stdout
2631    
2632    checkpoint54e_post
2633    o add two new packages
2634      - pp81 (Packanowski and Philander, 1981), Richardson number and
2635        stratification dependent mixing
2636      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2637      - these scheme operate in a similar manner as KPP (without ghat, of
2638        course), however there is only one diffusivity that is used for both
2639        temperature and salinity (and passive tracers)
2640    o add offline package
2641    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2642      provided by Stephanie Dutkiewicz
2643    o genmake2: add ability to search for C compilers and cleanup test output
2644      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2645    
2646    checkpoint54d_post
2647    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2648    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2649      leading to additional shift by 5 days each year of integration
2650       (i.e. leading to considerable offset over the years)
2651    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2652    o start with no AB and no initial filtering (staggerTimeStep):
2653      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2654    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2655      (external loading & cpl import/export stay in forward_step.F)
2656    o update coupling interface to work with new staggerTimeStep
2657    o change MDSIO ptracers_pickup.
2658    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2659    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2660    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2661    
2662    checkpoint54c_post
2663    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2664      this affects (truncation error) output.txt of test-exp:
2665       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2666    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2667    o change Qnet to always be the net heat flux, (+upward).
2668      affects (truncation error) output of natl_box exp.: updated
2669    o define the max number of passive tracers in PTRACERS_SIZE.h
2670    o start to test mnc routinely in exp0
2671    o add sea-ice loading (sIceLoad) as a new forcing field.
2672    
2673    checkpoint54b_post
2674    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2675       impressive on Altix and Opteron systems)
2676    o diagnostics can now write NetCDF files through the mnc package
2677    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2678    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2679    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2680      affects (truncation error) output of lab_sea & natl_box exp.: updated
2681    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2682    
2683    checkpoint54a_post
2684    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2685    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2686    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2687    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2688      + internal_wave (shift in writing cg2d_ini_res)
2689    checkpoint54a_pre
2690    
2691    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2692      - modified verification/lab_sea and natl_box_adjoint accordingly
2693    
2694    checkpoint54
2695    checkpoint53g_post
2696    o prepare splitting of thermodynamics: store convect.counter in common block
2697    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2698      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2699    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2700    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2701    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2702    o restore adjointability
2703    
2704    checkpoint53f_post
2705    o modifications that affect AIM experiment results (update output.txt):
2706      - no advection of S at top interface Nr (pkg/generic_advdiff)
2707      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2708    o AIM pkg:
2709      - include stability function into surf.Flux derivative relative to Tsurf
2710      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2711    
2712    checkpoint53e_post
2713    o merged cylindrical coord configuration
2714    o added rotating_tank experiment
2715    checkpoint53e_pre
2716    
2717    checkpoint53d_post
2718    o faulks upgraded: re-generate output.txt that have changed:
2719       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2720    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2721    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2722    o added Sadourny discretization of Coriolis
2723      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2724      - re-enabled use of omega3 (useAbsVorticity)
2725    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2726      vector-invariant equations
2727      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2728    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2729      hopefully without new bugs
2730      - still to do: biharmonic friction for non-hydrostatic w
2731    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2732    o regenerated output for global_ocean_ebm (using -ieee)
2733    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2734      of mom_common/
2735      - simple re-arrangement of instructions within computing loop
2736    checkpoint53d_pre
2737    
2738    checkpoint53c_post
2739    o new version of coupler for AIM+thSIce and Ocean models
2740     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2741     - land: change Evaporation of snow
2742     - aim with thSIce: fix bug in snow-precip.
2743    o changes to calc_gw.F
2744     - bug fix for w^2 term near the bottom boundary
2745     - (hopefully) improve the lateral slip boundary condtions for use with
2746        partial/looped cells
2747      - because the bug fix changes two verification experiments anyway (exp5
2748        and plume on slope), change the lateral boundary condition from half slip
2749        to the value of no_slip_sides
2750    o ebm package wasnt quite up to the parallel task. Fixed that.
2751    o Adjoint of EBM package + verification
2752      * TLM OK
2753      * ADM not sufficient accuracy yet (needs further testing)
2754    
2755    checkpoint53b_post
2756    o Commiting new energy balance model to repository
2757      * package is pkg/ebm
2758      * verif. is verification/global_ocean_ebm
2759      * references are in ebm_driver.F
2760    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2761    C        Global thermohaline circulation. Part I:
2762    C        Sensitivity to atmospheric moisture transport.
2763    C        J. Climate 12(1), 71-82
2764    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2765    C        Global thermohaline circulation. Part II:
2766    C        Sensitivity with interactive transport.
2767    C        J. Climate 12(1), 83-91
2768    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2769    C        Destabilization of the thermohaline circulation
2770    C        by atmospheric eddy transports.
2771    C        J. Climate 7(12), 1870-1882
2772    o Will need long integration testing.
2773    checkpoint53b_pre
2774    
2775    o created pkg/mom_common in preparation for variable viscosity code
2776    o renamed and split ini_mnc_io
2777    o pkg/land: only liquid water can diffuse or run-off
2778    o AIM using land: soil wetness availability account for snow
2779    o added printMapIncludesZeros to EEPARMS namelist
2780    
2781    checkpoint53a_post
2782    o restore TAMC compatiility for exf_constants.h
2783      (no usage of _d in .h)
2784    o Additional storing in KPP in an attempt to fix
2785      TAMC problem with adjoint of KPP code.
2786      (no success...)
2787      Identical code works fine with TAF.
2788    o Fixed verification/natl_box_adjoint experiments.
2789      Initial conditions for Experiments 4 and 5 are now
2790      set to "SEAICE_initialHEFF=0", which is more reasonable,
2791      and hence gives results closer to that of Experiment 2.
2792      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2793    
2794    checkpoint53
2795    o stable checkpoint with up to date adjoint
2796      TLM tests only run for 1st grdchk at the moment. Its unclear if
2797      this is a code problem or a problem with resetting code for g_
2798      variables that is being autogenerated wrong.
2799      Otherwise:
2800       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2801       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2802         are both still in chaos following their security messes.
2803    
2804    checkpoint52n_post
2805    o various build (mostly genmake2) changes including:
2806      - ability to build/run more easily within Cygwin and MacOS X
2807      - more complicated Makefiles with a stronger dependence on Gnu Make
2808    o pkg/seaice modifications
2809      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2810        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2811        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2812      - changed proxy for geostrophic velocity and updated
2813        verification/lab_sea/results/* accordingly
2814      - removed ADI dynamic solver from pkg/seaice
2815      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2816        they caused a segmentation fault under certain circumstances
2817      - removed unused field WATR
2818    o bug fix in exf-package:
2819      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2820         now reflect that.
2821    o small fixes in the cal-package:
2822      - set reference date to first of January for the 'model'-calendar
2823      - failing of cal_CheckDate in cal_FullDate now actually results in a
2824        warning
2825    o small modifications in exf-package to increase flexibility:
2826      - change climtempfreeze from a constant to a runtime parameter that
2827        is specified in data.exf_clim (default = -1.9)
2828      - introduce runtime parameter windstressmax (default = 2.0) that is
2829        specified in data.exf
2830    o fix in pkg/thsice:
2831      - update Evap (Tsf changes) to be consistent with Latent heat flux
2832      - maintain snow precipitation unchanged (even if Tsf >=0).
2833     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2834    
2835    checkpoint52m_post
2836    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2837      this does not change any of the results, because myIter=0 in swfrac always
2838      lead to jwtype=2 (the default anyway), but the call makes little sense
2839      as a default
2840    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2841    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2842      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2843    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2844    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2845    o extending useSingleCpuIO option to work with new exch2 I/O format
2846      - old-style, missing-tile I/O is still accessible by defining CPP
2847        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2848    o monitor package can write to NetCDF files and/or STDOUT
2849    o fix re-definition bug in MNC_GRID_INIT_ALL()
2850    o doc/api_reference added
2851      - a framework for building an API Reference Manual using all
2852        the "protex" comments embedded in the code
2853      - see pkg/generic_advdiff, pkg/mnc for examples
2854    o MNC:
2855      - make myThid the last argument for all subroutines
2856      - new default for the grid files: NO halos
2857      - add useMNC and other run-time flags
2858      - separate per-file-group handling of the unlimited dimension
2859      - early initialization of MNC w/ flags read at the eeboot stage
2860        and lookup tables set in initialize_fixed
2861      - write all MNC output to a freshly-created directory
2862    o thermodynamics sea-ice (thsice) is now tested with testreport.
2863    o test exp. advect_cs: use the standard cs32 grid ; update output.
2864    o Added functionality to grdchk:
2865      pick global i,j,k position (or nearest wet) where to perform check.
2866    
2867    checkpoint52l_post
2868    o new land formulation:
2869      a) use ground enthalpy as prognostic variable to ensure exact
2870         energy conservation.
2871      b) account for water temperature and for latent heat of freezing
2872         in all processes (rain, run-off, ground storage)
2873      c) compute surface and ground temperature implicitly.
2874    o aim_v23 modification for new land model:
2875      a) Treat separately land / ocean / sea-ice surface fluxes
2876         to allow implicit computation of land & sea-ice surface temp.
2877      b) add snow precipitation.
2878    checkpoint52l_pre
2879    
2880    o fix problem (when 1 tile is empty) in min/max monitor.
2881    o fix bug in timeAve (u,vZetatave in common block)
2882    o no restoring terms under ice for pkg/seaice
2883    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2884    o bug fix for pkg/seaice pickups
2885    o change MNC call locations and add coordinate attributes
2886    o mask vorticity at the corner ; affects global_ocean.cs output
2887    o fix ini_curvilinear_grid ; test CS experiments with mpi
2888    o aim.5l_cs: modify sea-ice fraction input file ; update output
2889    o exf: Adding simple range check routine for exf fields after read
2890    
2891    checkpoint52k_post
2892    o removed top-level directory "diags"
2893      - we migrated these functions to pkg/timeave a long time ago
2894    o fixed bug introduced in pkg/monitor
2895    o accuracy ctrlprec = 32 insuffient for gradient checks using
2896      averaged fields (I/O via cost_averages)
2897      -> use ctrl.h in active_file*.F to control I/O precision.
2898    o paramter list of CALL ADTHE_MAIN_LOOP
2899    o added initial do_the_model_io to ecco
2900    o set all ...Freq to zero after cost_final
2901      taveFreq, dumpFreq, pChkptFreq
2902    o MAIN and ECCO differentiability restored
2903    
2904    checkpoint52j_post
2905    o fix nchklev in tamc.h for global_ocean...
2906    o Bringing flow and store directives up-to-date
2907    o Really weird thing!
2908      call do_the_model_io from the_main_loop with parameters
2909      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2910      TAF places a faulty re-call of initialise_varia
2911      after cost_final call which should not be there!
2912    checkpoint52j_pre
2913    
2914    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2915      error messages
2916    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2917    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2918      debug output
2919    o modfied mdsio_writefield.F to handle non-global files under exch2
2920    o update AIM Cubed-Sphere exp (aim.5l_cs):
2921      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2922    o update AIM Equatorial Channel exp:
2923      use standard aim_v23 pkg and change the SST fields to be more realistic.
2924    o globalFile now works with exch2
2925    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2926      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2927    o limit timeave output for hi-res integrations
2928    
2929    checkpoint52i_post
2930    o removed CPP_EEOPTIONS.h from verification/*/code
2931    o updated the tiling for global_ocean_pressure
2932    checkpoint52i_pre
2933    
2934    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2935      the old pkg/aim).
2936    
2937    checkpoint52h_pre
2938    o shortened offending lines in exch2_send_rx?.template
2939    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2940    o genmake2: add build & execute test for NetCDF code
2941    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2942      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2943    o added useSingleCPUIO flag to monitor.F and mon_out.F
2944    o added temporary hack for sea-ice dynamics on the cube:
2945      metric terms are ignored and it is assumed that
2946      there is no sea-ice on cube faces 1, 2, 4, and 5.
2947    
2948    checkpoint52f_post
2949    o added exch2 cube routines to pkg/exch2
2950    o modified hs94.cs-32x32x5 to use it
2951    o added new grid files to hs94.cs-32x32x5
2952    checkpoint52f_pre
2953    
2954    checkpoint52e_post
2955    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2956      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2957    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2958      to work with implicit vertical advection and AB ;
2959    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2960    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2961     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2962    checkpoint52e_pre
2963    
2964    o fix bug in impldiff when Nr=1 or Nr=2.
2965    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2966    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2967    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2968      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2969    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2970    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2971    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2972    
2973    checkpoint52d_post
2974    o re-tiled many expts to allow comparison in multi-processor mode
2975      - updated output accordingly
2976      - changed hs94.128x64x5 to use intial T from file rather than use the
2977        random number generator
2978    o add infrastructure in model routines for fizhi and gridalt packages
2979    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2980    o changes to permit hi-res, cubed-sphere, configuration
2981      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2982      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2983      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2984        of surface winds for the cube
2985      (A verification experiment, based on global_ocean.cs32x15, but with
2986       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2987       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2988       complete with example surface forcing files and matlab scripts to look
2989       at the output and compare it with that of global_ocean.cs32x15.)
2990    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2991       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2992       to conform to the common rule.
2993    o check-in the first version of the coupler + interfaces for multi-components
2994       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2995       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2996       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2997       - ocean and atmos. share the same horizontal grid (no interpolation).
2998       - exchanges between component and coupler is done in forward_step
2999    o new verification experiment, cpl_aim+ocn:
3000       coupled ocean - AIM atmosphere on cs32 grid.
3001    
3002    checkpoint52d_pre
3003    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
3004    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
3005    
3006    checkpoint52c_post
3007    o Fixing OPTIONS files for use of exf:
3008      - ALLOW_ECCO not needed
3009      - ECCO_CPPOPTIONS.h should not be included from
3010        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
3011        as has been the case in the past
3012      - All cal/exf related options are currently set in
3013        single header file. Should remain so until we
3014        agree on a consistent new policy.
3015    o Removed all CPP options for cal package.
3016      cal has no more CPP options.
3017    o modified STOREs in GAD_ADVECTION
3018    o corrected key comp. for passkey
3019    
3020    checkpoint52b_post
3021    o new version: "thsice" of thermodynamic sea-ice pkg:
3022     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
3023     - modify fluxes but do not change theta directly;
3024     - light cleaning of bulk_force pkg (still needed with thsice).
3025     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
3026       + output_thsice.txt to test thsice & bulk_force pkgs.
3027    o put back grid & coriolis monitor output.
3028    checkpoint52b_pre
3029    
3030    o call "do_the_model_io" at the beginning (=> dump initial state)
3031    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
3032    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
3033      (need info on NUMBER_OF_PTRACERS)
3034    o missing PTRACERS headers in some routines
3035    o default tamc.h in pkg/autodiff supposed to crash
3036      to ensure proper customization
3037    
3038    checkpoint52a_post
3039    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
3040      - moved surfaceTendencyTice from pkg/seaice to main code
3041      - subroutine FREEZE_SURFACE now limits only surface temperature
3042        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
3043        => new output.txt for global_ocean.cs32x15 & global_with_exf
3044      - keep the old version of FREEZE for backward compatibility;
3045        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
3046      - corresponding modifs for TAF directives
3047    o added surface flux output variables to TIMEAVE_STATVARS
3048    o time-averaged output for pkg/ptracers
3049    o fix problem with ECCO-related divided adjoint
3050      snapshot file was missing some ad-variables,
3051      but no warning issued by TAF
3052    
3053    checkpoint52a_pre
3054    o some bug fixes for #undef REAL4_IS_SLOW
3055    
3056    checkpoint52 = ecco_c52_e35
3057    o after testing adjoints of checkpoint51u_post
3058    
3059    checkpoint51u_post
3060    o this is the post-merge tag of the ecco-branch
3061      (needs another clean checkout and re-testing)
3062    o various natl_box_adjoint configs and results
3063      but no input fields
3064    o obcs adjoint not yet merged!
3065    o adding ECCO global 1x1 and 2x2 degree configs
3066    o updated/extended some store directives for seaice
3067    o pkg/ecco now containes ecco-specific part of cost function
3068    o top level routines the_main_loop, forward_step
3069      supersede those in model/src/
3070      previous input data.cost now in data.ecco
3071      (new namelist ecco_cost_nml)
3072    o in ctrl/ cleaned some cross-dependencies and updated CPP options
3073    
3074    checkpoint51t_post
3075    o this is the pre-merge tag of the ecco-branch
3076    
3077    checkpoint51s_post
3078    o cleanup: removed various obsolete #define-s
3079    o pkg/grdchk
3080      - renamed 'ph-grd 3' to 'grad-res'
3081      - merged from ecco-branch
3082        (remaining bug fixes for obcs gradient checks)
3083      - additional high-precision output for testreport
3084        (grep for 'precision_grdchk_result')
3085    
3086    checkpoint51r_post
3087    o cleaned up or removed CPP_OPTIONS.h files
3088    o updated results for some of the tests to reflect the new
3089      optfiles (-ieee: -O0 instead of -O3)
3090    
3091    checkpoint51q_post
3092    o cd_code:
3093      - moved cd_scheme.F -> cd_code_scheme.F
3094      - separate read_checkpoint from cd_code_ini_vars.F
3095      - separated cd_code part from write_checkpoint
3096      - updated AD_SOURCE, generated .flow
3097      - added CD_CODE_VARS.h to the_main_loop
3098      - Moving cd_code specific store dir.s to pkg/cd_code
3099    o ctrl package totally restructured
3100      - pack/unpack now optional and decoupled from
3101        xx_/adxx_ I/O
3102      - ctrl_pack/unpack cleaned
3103        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
3104      - confined inclusion of AD_CONFIG.h to where necessary.
3105    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
3106    
3107    checkpoint51p_post
3108    o create initial cd_code package
3109      - WARNING: the initialization of fields within packages
3110        is broken because INI_FIELDS (where READ_CHECKPOINT is
3111        called) is called *before* PACKAGES_INIT_VARIABLES.
3112        This seems to be backwards since
3113        1) its important to initially zero the entire field including
3114           the "halo" region
3115        2) zeroing needs to be done *before* reading pickup info
3116           and the pickup call might or might not happen in any
3117           particular run
3118      - this needs an overhaul for R2
3119    o cleanup verification/*/code/GMREDI_OPTIONS.h
3120    o cleanup testreport
3121    
3122    checkpoint51o_post
3123    o bringing AD-related verif's up to date with genmake2
3124      - carbon/
3125      - global_ocean.90x40x15/
3126      - hs.94.1x64x5/
3127      - (front_relax/ )
3128    o (more) consistent directory structure for AD-related verif.'s
3129    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
3130    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
3131    o bug fix in find_alpha.F for MDJWF:
3132      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
3133        change rho -> rho-rhoConst
3134      - replace call find_rho to find_rhonum
3135    o initialisation of rFlx extended to full array (required by TAF)
3136      and shifted to thermodynamics
3137    o removed PTRACERS.h in ptracers routine
3138    o added surfacetendencyPtr to S/R parameter list pracers_forcing
3139    o Correcting initialisations for fVerU, fVerV.
3140    o helping TAF to recognize dependency on kUp for
3141      fVerU, fVerV
3142    o Replacing delZ by delR in pkg/ctrl/
3143    checkpoint51o_pre
3144    
3145    o undid all of cp51 pending some cleanups and discussion
3146    o added the [#include "AD_CONFIG.h"] statement to all files that need
3147       it for adjoint/tl #defines
3148     o re-worked the build logic in genmake2 to support AD_CONFIG.h
3149     o removed tools/genmake since it no longer works
3150    
3151    checkpoint51n_post
3152    o modifications to make FREEZE flux visible to pkg/kpp
3153      - moved surfaceTendencyTice from pkg/seaice to main code
3154      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
3155      - subroutine FREEZE now limits only surface temperature
3156        (this means new output.txt for global_ocean.90x40x15,
3157         global_ocean.cs32x15, and global_with_exf)
3158    o added surface flux output variables to TIMEAVE_STATVARS
3159    
3160    checkpoint51n_pre
3161    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
3162    o added [#include "AD_CONFIG.h"] to all files that use the following
3163      defines:
3164      - ALLOW_ADJOINT_RUN
3165      - ALLOW_TANGENTLINEAR_RUN
3166      - ALLOW_ECCO_OPTIMIZATION
3167    
3168    checkpoint51m_post
3169    o incorporating changes to get TAMC/TAF working in genmake2
3170      - added new TAMC/TAF targets to the Makefile
3171      - various cleanups related to package handling
3172      - these changes should have no impact on the forward model
3173    
3174    checkpoint51l_post
3175    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
3176     - faster algorithm for cal_addtime.F
3177     - higher precision arithmetic, where needed
3178     - pkg/exf *startdate variables changed from calendar date to
3179       model integration time
3180    
3181    checkpoint51l_pre
3182    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
3183    o enable to apply restoring on S & T only in a latitude band.
3184    o update output (external_forcing_surf modif. change truncation errors)
3185       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
3186    
3187    checkpoint51k_post
3188    o change default to: useNHMTerms=.FALSE.
3189     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
3190       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
3191     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
3192        exp1, ideal_2D_oce
3193     - change data file of oceanic exp (leave the results unchanged for now)
3194       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
3195    o set gravitySign automatically according to the vertical coordinate used
3196      (and change sign: back to "logical" value: +1 when R increases downward)
3197    o added an include barrier to the default CPP_OPTIONS.h and
3198      removed the #include "PACKAGES_CONFIG.h" from it
3199    o fix a bug in mom_fluxform (from chk51j_post)
3200    
3201    checkpoint51j_post
3202    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
3203    o adjusted some flow directives (dynamics, thermodynamics)
3204    o added cubed-sphere case to test cost function
3205    o heckpoint_lev?_directives.h now include
3206      pkg-specific directives, whenever those are enabled.
3207    o Moving pkg-specific flow directives to corresponding pkg
3208      Moving pkg-specific differentiation list to corresponding pkg
3209      Moving pkg-specific checkpoint-lev storing to corresponding pkg
3210      ---> conventions are
3211           - pkg_ad.flow
3212           - pkg_ad_diff.list
3213           - pkg_ad_check_lev?_dir.h
3214    
3215    checkpoint51i_post
3216    o merge of the branch-genmake2
3217      - knowingly breaks the older genmake
3218      - automatic generation of all ALLOW_${PKG_NAME} defines
3219      - new testreport supersedes older testscript
3220    o large number of package inclusion and header cleanups
3221    checkpoint51i_pre
3222    
3223    o new output for adjoin of global ocean vector invariant
3224    o fix for checkpoint of thermodynamic seaice and bulk_force
3225    o Steph gchem various cleanups
3226    
3227    checkpoint 51h_pre
3228    o fixed some single quotes
3229    o modify gchem pkg to be more versatile
3230    o modifications to clean up dic pkg
3231    o add pkg/cfc
3232    
3233    checkpoint51g_post
3234    o provide links for ARPACK and ADM*TLM
3235    o start removing verification/vero/
3236    o update AD-related stuff
3237      (in particular some IF-statements in model/src/ routines)
3238    o adding to verification/global_ocean.90x40x15/ adjoint of
3239      vector invariant setup
3240    
3241    checkpoint51f_post
3242    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
3243    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
3244      of tracer Green's fucntions for ocean inversion project.
3245    
3246    checkpoint51f_pre
3247    o Added on-the-fly spatial interpolation capability
3248        "USE_EXF_INTERPOLATION" to pkg/exf.
3249      - This is a temporary Cartesian-grid hack until
3250        the super-duper ESMF coupler becomes available.
3251      - See verification/global_with_exf/README for usage example.
3252      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
3253        flags and modified pkg/seaice accordingly.
3254    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
3255        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
3256        non-local transport term.
3257    
3258    checkpoint51e_post
3259    o pkg/mom_vecinv:
3260      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
3261      - add time-ave diagnostic of vorticity advection.
3262    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
3263    o atmospheric geopotential: - include water vapor effect;
3264                                - use p^kappa in p* scaling.
3265    o land pkg: read initial state from files.
3266    o AIM : add stratospheric drag in the upper level
3267    
3268    checkpoint51d_post
3269    o change function ILNBLNK (=> last non-blank char.) to return zero
3270      (instead of the string length) when the string. char is empty
3271    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
3272    o modif's to restore TAMC compatibility
3273      - avoid "_d" constructs in PARAMETER declarations
3274      - avoid interrupting lines by comment lines
3275    o Use cluster local disks for purely local I/O
3276      vs. globally visible disks needed for ctrl stuff
3277      (merged from ecco-branch)
3278      - new active_file_loc... and mdsio_..._loc routines
3279      - affected packages: autodiff, ctrl, grdchk, mdsio
3280    
3281    checkpoint51c_post
3282    o introducing integer flag debugLevel
3283      - debLevZero: suppress all output
3284      - debLevA: standard
3285      - debLevB: equivalent to current debugMode=.TRUE.
3286    o introducing pathname variable mdsioLocalDir for mdsio
3287      that can be specified at runtime
3288      (relevant for cluster I/O to local disk)
3289    `
3290    >>>checkpoint51b_post
3291    adjoint of ptracers
3292    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3293    o extended state in checkpoint_lev?, etc.
3294    o alternative ctrl/cost with tr1 or ptracer
3295    o new comlev1_bibj_ptracers
3296    o new ptracers.flow
3297    o made ptracers_forcing same as external_forcing_s
3298    o added verification for adjoint with ptracers
3299      - adm. grdchk fail so far
3300      - tlm. grdchk OK
3301      - checked tapelev/comlev recomputations: OK
3302    <<<checkpoint51b_pre
3303    
3304    checkpoint51a_post
3305    o added code for biogeochemistry package
3306      - new pkgs: dic, gchem
3307      - new subroutine in ptracers
3308    o modify code for biogeo packages
3309      - in model/src and pkg/ptracers
3310    
3311    checkpoint51
3312    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3313      - autodiff, ctrl, exf, grdchk, seaice
3314      kept separate packages
3315      - cost, ecco, obcs
3316    o updating verification/internal_wave, verification/lab_sea
3317      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3318    
3319    checkpoint50i_post
3320    o Preparing next differentiable checkpoint and sync
3321      of MAIN vs. ecco-branch
3322      - 1st step: this one is differentiable
3323      - 2nd step: next(! not this) checkpoint will have updated packages
3324                  from ecco-branch)
3325    
3326    checkpoint50h_post
3327    o new package "land": provide surface BC for AIM.
3328    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3329    o AIM: use true log-P extrapolation for near surface temp (= as in
3330        F.Molteni paper) ; update aim.5l_cs output.
3331    o New variable in PARM03 for more flexible pickups
3332    o somewhat cleaned package initialisation sequence for
3333      ctrl/ cost/ ecco/ in packages_... routines
3334    
3335    checkpoint50g_post
3336    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3337      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3338      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3339        made the default because of faster convergence than ADI
3340    
3341    checkpoint50f_post
3342    o exf totally restructured
3343      - replaced all exf_set_ routines by one generic exf_set_gen.F
3344        and made sure it's still differentiable
3345      - split exf_getffields.F into new exf_bulkformulae.F
3346      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3347      - updated adjoint/makefile and relevant verif. accordingly
3348    
3349    checkpoint50f_pre
3350     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3351          + change Evap over land. (update aim.5l_cs output)
3352     o added missing .cvsignores and made uniform across expts
3353     o changed configuration of tidal_basin_2d expt
3354     o added pkg/debug functions for tracing code in fatal crashes
3355     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3356     o new fn in pkg/monitor to stop model if solution grows too big
3357     o removed lots of single quotes from comments
3358    
3359    checkpoint50e_post
3360    o make KPP work with PTRACERS
3361     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3362       nearly a copy of kpp_transport_s
3363     - there is no analogue to SurfaceTendencyS, so I have to use
3364       gPtr(of the surface layer) instead
3365    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3366    checkpoint50e_pre
3367    
3368    checkpoint50d_post
3369    o change kpp output from multiple-record state files to single-record state
3370      files analogous to write_state.F
3371    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3372      analogous to the cg2d-related output.
3373    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3374      so that writing to internal file fn (with length 512) fails.
3375    checkpoint50d_pre
3376    
3377    checkpoint50c_post
3378    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3379    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3380    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3381    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3382    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3383    
3384    checkpoint50c_pre
3385    Merging from release1_p13:
3386    o bug fix for pkg/seaice dynamic solver
3387    o Added SEAICE_initialHEFF to pkg/seaice
3388    
3389    checkpoint50b_post
3390    o store u*,v* in gU,V instead of in guNm1,gvNm1
3391    o in order to put the momForcing out of the Adams-Bashforth:
3392      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3393      to timestep.F
3394    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3395    o re-generate output for highly sensitive test-exp:
3396       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3397    
3398    checkpoint50b_pre
3399    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3400    o corrected CPP option mismatch in exf_Bulk... functions for case
3401      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3402    
3403    checkpoint50a_post
3404    o Bug fix for merging between c50 and KPP.
3405      ikey was passed from thermodynamics to kpp_calc via
3406      common block rather than being recomputed in kpp_calc,
3407      in contradiction with new key itdkey.
3408      New key ikppkey created, and tamc.h headers updated.
3409    
3410    checkpoint50
3411    - 2nd step of merge with ecco-branch:
3412      merge changes in ecco-branch back into main trunk
3413    - bug fix in find_alpha
3414    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3415    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3416    - merged some sliced AD support routines
3417    
3418    checkpoint49
3419    merged from ecco-branch:
3420    o exf:
3421      - Enable initialisation of forcing fields to constant
3422        (runtime) values.
3423      - in exf_getffields.F
3424        Reduce i-/j-loop to interior domain, discarding overlaps.
3425        That also fixes wrong TAF-key computations for key_1, key_2
3426        with bulf formulae.
3427      - exf_init.F modify #ifdef for exf_init_evap
3428      - exf_getffieldrec.F, ctrl_getrec.F
3429        The following INT-usages are not safe:
3430          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3431          fldcount = int(fldsecs/fldperiod) + 1
3432        and were modified.
3433    o autodiff: checkpoint_lev...
3434      - updated storing for bulk formulae (some arrays were missing)
3435      - added state for seaice package
3436      - synchronized with main branch
3437    o DIVA:
3438      Modif.s in
3439      - the_main_loop.F
3440      - the_model_main.F
3441      and added cost_final_restore.F cost_final_store.F
3442      o With these changes, it is possible to fully separate
3443        the first forward run to compute the cost function (mdthe_main_loop)
3444        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3445        into separate model executions.
3446        This enables better tuning of DIVA to given queue sizes.
3447      o Loss of cost function value in consecutive DIVA runs is
3448        fixed by storing to 'costfinal' file.
3449      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3450        beginning/end of adjoint integration is accounted for.
3451      The current changes apply to TAF-1.4.26.
3452      TAF has one remaining bug, requiring one manual change
3453      (see MITgcm manual).
3454    o cal: synchronized between MAIN and ecco-branch
3455    
3456    checkpoint48i_post
3457    o Changes to restore differentiability of code w.r.t. previous tag
3458      (mostly adding new routines to make list and replacing
3459      pressure by totPhiHyd).
3460    o Updated and merged grdchk package
3461      - has both ADM and TLM checks
3462      - works for single- and multi-proc.
3463      - output cleaned
3464      - worked successfully for parallel DIVA
3465    o genmake:
3466      - Adding -platform=SP4
3467      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3468    o Modif. for DIVA:
3469      ctrl_unpack should not be called in intermediate DIVA interval.
3470      (similar thing would apply for active files such as
3471      tbar, sbar, psbar, which should not be reinitialised;
3472      only relevant for ecco-branch)
3473    
3474    checkpoint48h_post
3475    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3476    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3477    o Added SEAICE_initialHEFF to pkg/seaice
3478    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3479    
3480    checkpoint48g_post
3481    --- EOS:
3482    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3483      store total Potential in totPhyHyd for diagnostics & EOS.
3484    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3485    --- Pressure/geopotential gradient:
3486    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3487    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3488      ( changes results of global_ocean_pressure )
3489    o NLFS + z-coord.: add eta*Rho' contribution.
3490    o accurate phiHyd when using interface-W at the middle between 2 centers
3491     ( changes results of ideal_2D_oce )
3492    o includes r* 2nd term in potential gradient.
3493    
3494    checkpoint48f_post
3495    Merging from release1_p12:
3496    o Modifications for using pkg/exf with pkg/seaice
3497      - improved description of the various forcing configurations
3498      - added basic radiation bulk formulae to pkg/exf
3499      - units/sign fix for evap computation in exf_getffields.F
3500      - updated verification/global_with_exf/results/output.txt
3501    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3502      (SBO) core products, including oceanic mass, center-of-mass,
3503      angular, and bottom pressure (see pkg/sbo/README.sbo).
3504    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3505      to avoid negative values in shallow regions.
3506      - updated verification/natl_box/results/output.txt
3507      - updated verification/lab_sea/results/output.txt
3508    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3509    o Added useSingleCpuIO option (see PARAMS.h).
3510    o Updated useSingleCpuIO option in mdsio_writefield.F to
3511      work with multi-field files, e.g., for single-file pickup.
3512    o pkg/seaice:
3513      - bug fix in growth.F: QNET for no shortwave case
3514      - added HeffFile for specifying initial sea-ice thickness
3515      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3516    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3517      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3518    o pkg/seaice:
3519      - adjoint-friendly modifications
3520      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3521    
3522    checkpoint48e_post
3523    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3524    o dynamics: change definition of computational domain & adapt mom_fluxform
3525      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3526    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3527        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3528        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3529        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3530        inverted_barometer solid-body.cs-32x32x1
3531      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3532    
3533    checkpoint48d_post
3534    o in preparation for r*:
3535     a) use pre-computed gradient of hydrostatic potential:
3536        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3537     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3538        => affects results of glob_oce_pressure (different truncation error)  
3539      update output.txt of ideal_2D_oce & global_ocean_pressure
3540    
3541    checkpoint48d_pre
3542    o in preparation for r*:
3543      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3544      pass the 2 comp. of the grad. as arguments to momentum S/R.
3545      but for the moment, only used if it does not change the results.
3546    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3547    
3548    checkpoint48c_post
3549    Modifications in treatment of initial flux forcing controls
3550    to avoid extra storing of flux fields.
3551    
3552    checkpoint48c_pre
3553    o Added tidal_basin_2d experiment (currently 1D!)
3554    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3555    
3556    checkpoint48b_post
3557    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3558     (modification to pressure gradient not yet implemented)
3559    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3560      (for U & V) that are used for vertical advection of momentum.
3561    
3562    checkpoint48a_post
3563    o In preparation for r*, use temp. array to compute vertical transport
3564       in flux-form momentum pkg. => change results of few test-exp.
3565      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3566                        lab_sea, natl_box & plume_on_slope
3567    
3568    checkpoint48
3569    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3570    
3571    checkpoint47j_post
3572    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3573    o moved adexch from forward_step to addummy_in_stepping
3574    o added exch in ctrl_map_...
3575    o aveFreq.=0. at end of cost_final to avoid overwrite in
3576      reverse checkpointing loop
3577    o Yet more changes in gmredi:
3578      * adgmredi_calc_tensor
3579        avoiding all recomputation of gmredi_slope_limit
3580      * adgmredi_x/y/rtransport
3581        added flag for excessive storing to avoid recomp. of
3582        u/v/rtans, dTdx/y/z
3583        -> this is not really necessary and very memory-consuming
3584      * adgmredi_slope_psi:
3585        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3586      * gmredi_slope_limit
3587        re-activated full calculation of taperfct for case 'ac02'
3588    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3589    
3590    checkpoint47i_post
3591    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3592    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3593      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3594    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3595    o gmredi: fix few bugs.
3596    
3597    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3598    This will be a good checkpoint to plug into the ecco-branch.
3599    o few modif.'s to get latest version adjointed
3600      (mainly kick out code in ini_linear_phisurf)
3601    o modif's to run adjoint with exactConserv
3602    o case GM_BOLUS_ADVEC should be cleaned
3603      S/R gmredi_slope_psi should be cleaned
3604    o verification/carbon now has exactConserv=.TRUE.
3605    
3606    checkpoint47g_post
3607    o time-average AIM output: becomes independent from statvars time-average
3608      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3609    o After TAF bug fix:
3610      Tested adjoint of gmredi package.
3611      Tests were done with checkpoint47 rather than with latest
3612      checkpoint47f_post since the latter is broken for the adjoint
3613      verification/carbon/ contains both ADM and TLM gradient checks.
3614    Here they are, before they get changed/lost/stolen.
3615    Mostly modif.'s to fix numerical sensitivities.
3616    Gradient checks OK for
3617    - GM_taper_scheme:
3618      * clipping
3619      * ac02
3620      * linear
3621      * glw91
3622      * dm95
3623      * ldd97
3624    - GMREDI_OPTIONS:
3625      * GM_VISBECK_VARIABLE_K
3626      * GM_NON_UNITY_DIAGONAL
3627      * GM_EXTRA_DIAGONAL
3628      * GM_BOLUS_ADVEC
3629    in conjunction with data.gmredi parameters to be checked in
3630    in a few minutes under verification/carbon/code/
3631    
3632    checkpoint47f_post
3633    Merging from release1_p10:
3634    o modifications for using pkg/exf with pkg/seaice
3635      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3636        and SEAICE_EXTERNAL_FLUXES
3637      - pkg/exf CPP options EXF_READ_EVAP and
3638        EXF_NO_BULK_COMPUTATIONS
3639      - usage examples are Experiments 8 and 9 in
3640        verification/lab_sea/README
3641      - verification/lab_sea default experiment now uses
3642        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3643    
3644    checkpoint47e_post
3645    o created a tag prior to creating a branch
3646    
3647    checkpoint47d_post
3648    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3649      at the bottom boundary had an erroneous half slip boundary condition
3650    o added bottom drag and no slip boundary condition capabilities to
3651      oceanic pressure coordinates code
3652    o added new verification experiment global_ocean_pressure, this experiment is
3653      also described in the tutorial section of the manual
3654    checkpoint47d_pre
3655    
3656    checkpoint47c_post
3657    o Added a verification experiment for a global cubed-sphere ocean run
3658      -  verification/global_ocean.cubed32x32x30
3659      -  uses pkg/therm_seaice and pkg/bulk_forcing
3660    
3661    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3662    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3663      when using P-coordinate; only implemented for atmospheric config.
3664    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3665      NOTES: requires option NONLIN_FRSURF to be "#define".
3666    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3667    
3668    checkpoint47b_post
3669    Merging from release1_p9:
3670    o pkg/seaice
3671      - removed GOTO's and added taf directives
3672      - double precision constants to reduce the g77 (Linux)
3673        to F77 (SGI) differences reported in release1_p8
3674    o tools/genmake
3675      - added SGI options
3676    o verification/testscript
3677      - updated to that of checkpoint47a_post
3678    o verification/global_ocean.90x40x15/input/eedata
3679      - modified for SGI f77 compatibility
3680    o verification/lab_sea
3681      - added description of sea-ice model
3682      - added missing matlab routines
3683      - added test of thermodynamics parallelization
3684    
3685    checkpoint47a_post
3686    o new pkg: aim_v23
3687     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3688       for now, keep the same surface forcing as before.
3689     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3690     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3691     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3692    o add diagnostic of surface correction term in monitor output
3693    
3694    o bulk_force and therm_seaice
3695    - Two packages:  bulk_force (Bulk forcing)
3696      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3697    - Earlier integration from Stephaine Dutkiewicz
3698      and Patrick Heimbach.
3699    - Two ifdef statements for compile time,
3700       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3701    
3702    checkpoint47
3703    differentiable version of checkpoint46n_post
3704    o bug fix in quasihydrostaticterms
3705    o * "clean" adjoint code (in terms of extensive recomputations)
3706        can now be obtained for all GMREDI options (i.e. for
3707        - GM_VISBECK_VARIABLE_K
3708        - GM_NON_UNITY_DIAGONAL
3709        - GM_EXTRA_DIAGONAL
3710        - GM_BOLUS_ADVEC )
3711      * However, wrong gradient check problem remains unsolved.
3712      * New CPP options have been introduced for different
3713        tapering schemes
3714    o external_fields_load now part of differentiation list
3715    o pressure needs multiple storing;
3716      would be nice to have store_pressure at beginning or
3717      end of forward_step, e.g. by having phiHyd global (5-dim.)
3718      (NB: pressure is needed for certain cases in find_rho,
3719      which is also invoked through convective_adjustment).
3720    o recomputations in find_rho for cases
3721     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3722    o #define ATMOSPHERIC_LOADING should be differentiable
3723    o ini_forcing shifted to begining of initialise_varia
3724    o Incorporating QNVS line search routines into MITgcm
3725      (this is separate code, and therefore not under pkg)
3726      lsopt/, optim/
3727    o Updated verification/carbon/
3728      - #define GM_VISBECK_VARIABLE_K
3729      - GM_taper_scheme    = 'ldd97'    
3730    
3731    checkpoint46n_post
3732    Merging from release1_p8:
3733    o verification/natl_box:
3734      updating new external_fields_load routine
3735    o New package: pkg/seaice
3736      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3737      The sea-ice code is based on Hibler (1979-1980).
3738      Two sea-ice dynamic solvers, ADI and LSR, are included.
3739      In addition to computing prognostic sea-ice variables and diagnosing
3740      the forcing/external data fields that drive the ocean model,
3741      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3742      The implied surface heat flux is then stored in variable
3743      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3744      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3745      non-local transport term.  Because this call precedes model
3746      thermodynamics, temperature under sea-ice may not be "exactly" at
3747      the freezing point by the time theta is dumped or time-averaged.
3748      N.B.: fairly large differences in accuracy occur across
3749            different platforms/compilers; comparison between
3750            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3751            generated output gives:
3752       T           S           U           V
3753      C D M    c        m  s        m  s        m  s        m  s
3754      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3755      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3756      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3757    
3758      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3759    o GAD:
3760      - generated new common blocks to account for call of
3761        same gad routines with differing traceridentities
3762        (needed to modify tracerIdentity indices in GAD.h)
3763      - generated separate common blocks for case useCubedSphereExchange
3764        (Department of Futurology)
3765      - parameter lists to gmredi_?transport: added tracerIdentity
3766      - added new key indices to tamc.h
3767    o external_fields_load:
3768      - added this routine to TAF list
3769      - needed to make some common blocks global and additional storing
3770        along the same lines as exf package (checkpoint_lev?_directives.h)
3771    o exf:
3772      updated external forcing package
3773      - bug fixes carried over from ecco-branch
3774        (missing OBCS_OPTIONS.h in two routines)
3775      - enable easy to use "no forcing".
3776      - added exf I/O for atmospheric loading
3777      - added exf I/O for runoff data
3778      - transfered scaling between exf <-> MITgcm to exf namelist
3779    o Adding new verification experiment global_with_exf.
3780      This verification experiment is almost identical to the
3781      global_ocean.90x40x15 experiment, except that it uses
3782      the exf (and cal) package instead of the
3783      external_fields_load routine (cf README file).
3784    
3785    checkpoint46m_post
3786    o modified testscript to return -- when there are no lines of "%MON" output
3787    o added new flag "quasiHydrostatic" for QH mode
3788      and new routine quasihydrostaticterms()
3789    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3790      New routine: mom_u_coriolis_nh()
3791    o fixed sign of non-hydrostatic metric terms in u and v equations.
3792      Depend on correct sign of gravitySign.
3793    o added work.pc* to .cvsignore in aim directories using ifc
3794    o introduced flag for controllin non-hydrostatic metric terms
3795    o removed gravitySign from PARM04
3796    o switched to g77/ifc from pgf77 in aim experiments
3797    
3798    checkpoint46l_post
3799    o made convective adjustment work with pressure coordinates:
3800     - changed the direction of k-loop in convective_adjustment.F for the
3801       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3802     - adjusted the reference pressure k-index in convective_adjustment.F
3803     - adjusted the convection condition in convect.F (in analogy to
3804       calc_ivdc.F)
3805     - convective_adjustment no longer computes anything on the halos
3806     - removed the warnings about negative salinity from find_rho.F and
3807       find_alpha.F; instead the new routine look_for_neg_salinity, called
3808       at the beginning of find_rho, find_alpha, and find_beta, does a
3809       check of the entire slice, if CPP-option
3810       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3811    checkpoint46l_pre
3812    
3813    checkpoint46k_post
3814    o fixed the verification/global_ocean.90x40x15 experiment:
3815     - new bathymetry (the world according to A., JMC, and M.)
3816     - new initial fields and forcing fields (*.bin files)
3817     - new POLY3.COEFFS (for the next release one should switch to a full
3818       equation of state: JMD95P or MDJWF)
3819     - fixed several errors and redundancies in the data file
3820     - experiment uses looped cells
3821     - added matlab directory with diagnostic scripts for plotting of output
3822    
3823    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3824     - read AIM physics parameters from a file (data.aimphys)
3825     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3826    
3827    checkpoint46j_post
3828    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3829    o move wVel computation at the end of the time step, in S/R integr_continuity
3830    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3831    o update timeave pkg for wVel diagnostic.
3832    checkpoint46j_pre
3833    
3834    checkpoint46i_post
3835    o Clean up AIM package (and keep the results unchanged):
3836      include CPP_OPTION and use IMPLICT NONE in all routines ;
3837      declare all the variables _RL ; use _d 0 for all numerical constants.
3838      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3839    
3840    checkpoint46h_post
3841    o cleaned up the use of rhoNil and rhoConst.
3842      - rhoNil should only appear in the LINEAR equation of state, everywhere
3843        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3844        and the dynamical equations are all divided by rhoConst
3845    o introduced new parameter rhoConstFresh, a reference density of fresh
3846      water, to remove the fresh water flux's dependence on rhoNil. The default
3847      value is 999.8 kg/m^3
3848    o cleanup up external_forcing.F and external_forcing_surf.F
3849      - can now be used by both OCEANIC and OCEANICP
3850    checkpoint46h_pre
3851    
3852     Added code to convert surface volume flux (fresh water) into
3853     a mass flux when using P coordinates in the ocean (OCEANICP).
3854     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3855    
3856    checkpoint46g_post
3857    o Include a new diagnostic variable phiHydLow for the ocean model
3858      - in z-coordinates, it is the bottom pressure anomaly
3859      - in p-coordinates, it is the sea surface elevation
3860      - in both cases, these variable have global drift, reflecting the mass
3861        drift in z-coordinates and the volume drift in p-coordinates
3862      - included time averaging for phiHydLow, be aware of the drift!
3863    o depth-dependent computation of Bo_surf for pressure coordinates
3864      in the ocean (buoyancyRelation='OCEANICP')
3865      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3866        Theta, Salinity, and Pressure in the parameter list. This routine is
3867        presently contained in find_rho.F. This routine does not give the
3868        correct density for 'POLY3', which would be a z-dependent reference
3869        density.
3870    o cleaned up find_rho
3871      - removed obsolete 'eqn' from the parameter list.
3872    o added two new verification experiments: gop and goz
3873      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3874    checkpoint46g_pre
3875    
3876    checkpoint46f_post
3877    o Enable tangent linear (forward mode) gradient checks:
3878      - extended active file handling to g_... files
3879      - added TANGENT_SIMULATION to theSimulationMode
3880      - extended grdchk package accordingly
3881    o added tangent linear setup in verification/carbon/code_ftl
3882    o added adjoint setup in verification/front_relax/code_ad
3883    
3884    checkpoint46e_post
3885    o Added new equation of state -> MDJWF
3886      - EOS of McDougall et al., 2002, JAOT, submitted
3887      - caveat: the equation of state is only valid for a smaller (more
3888        realistic?) range of values than JMD95P/Z and UNESCO
3889      - added masks to the calculation of pressure in store_pressure
3890      - added more check values for density in check_eos (ini_eos.F), some of
3891        the old check values are out of the range of the MDJWF-eos, so don't
3892        expect perfect matches for those
3893    checkpoint46e_pre
3894    
3895    checkpoint46d_post
3896    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3897      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3898      case of pressure coordinates. eosType='JMD95Z' in
3899      combination with buoyancyRelation='OCEANICP' now causes an error.
3900    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3901      in find_alpha/beta.
3902    checkpoint46d_pre
3903    
3904    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3905      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3906    
3907    checkpoint46c_post
3908    o Changes necessary for ocean in p-coordinates
3909     -  Added new buoyancy relation = 'OCEANICP'
3910     -  Added new parameters = gravitySign (this used to be contained inside
3911        the factor dRdZ which I added when we first switched to R coordinates).
3912     X GM/Redi is not compatible (yet)
3913     X bottom drag and no-slip need to be debugged.
3914    checkpoint46c_pre
3915    
3916    checkpoint46b_post
3917    o Added new equation of state -> JMD95Z and JMD95P
3918      - EOS of Jackett and McDougall, 1995, JAOT
3919      - moved all EOS parameters into EOS.h
3920      - new routines ini_eos.F, store_pressure.F
3921    o Added UNESCO EOS, but not recommended because it requires
3922      in-situ temperature (see JMD95)
3923    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3924      unesco.f to be used with POLY3
3925    checkpoint46b_pre
3926    
3927    checkpoint46a_post
3928    o Added (atmospheric) pressure loading
3929      - new field in FFIELDS.h, etc...
3930      - new cpp flag ATMOSPHERIC_LOADING
3931    o Changed hFacC to _hFacC in calc_phi_hyd.F
3932    o Added SHORTWAVE_HEATING to some files for consistency
3933    checkpoint46a_pre
3934    
3935    checkpoint46
3936    further merges from release1_p5
3937    o new ctrl package
3938      - adopted from ECCO environment to enable optimization
3939      - added Eliassen Palm fluxes to controls
3940    o added Eliassen Palm flux controls to gradient check package
3941    o cost package
3942      - Compatible with new ctrl package
3943      - added Eliassen Palm cost hooks
3944      - modif's of existing cost functions
3945    o Adjoint-related bug fixes in kpp:
3946      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3947      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3948    o autodiff package
3949      - flow directives:
3950        + new for S/R do_the_model_io
3951        + enhanced for S/R checkpoint
3952        + new gmredi.flow
3953      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3954        disable adcommon.h/g_common.h by default.
3955      - fixed problem for adjoint of global_max
3956    o modified verification/carbon/
3957    o New setup for adjoint of global_ocean
3958    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3959    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3960    o incorporated hooks for sponge layer code (external_forcing.F)
3961    
3962    checkpoint45d_post
3963    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3964    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3965      (affects plume_on_slope "cg2d" output)
3966    o add new parameter deltaTfreesurf for free-surface time stepping
3967    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3968    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3969    o change phiMin in exp1 (to agree with documentation)
3970    o add new flags:
3971     - T,S forcing inside/outside Adams-Bashforth
3972     - turn off temp,salt advection and/or forcing
3973     - for each tracer, define internal flag for multiDimAdvection & A-B
3974    o monitor: change definition of KE to check conservation of Energy
3975    
3976    checkpoint45c_post
3977    o Removed f90 comments ("!")
3978    o Modified initialisations to enable exf package for MITgcm
3979      (without invoking ECCO_PACKAGE).
3980    o modifications to gradient check package (Martin Losch)
3981      - enable centered differences
3982      - modified format of standard output
3983    
3984    checkpoint45b_post
3985    o cleaned exchange calls in cg2d
3986    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3987    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3988      to configure barotropic setup (Martin Losch)
3989    o moved some initialisations within bi,bj loop in dynamics
3990      (TAF flow dependency)
3991    o in initialise_varia, moved call packages_init_variables
3992      before convective_adjustment_init
3993      (corresponding adjustment of TAF tape initialisation).
3994    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3995    
3996    checkpoint45a_post
3997    o compute Rho over the whole domain (extend iMin,jMin indices)
3998    o specific exchange for X-slice domain (case Ny=1)
3999    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
4000    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
4001    
4002    checkpoint44h_post = checkpoint45
4003    o Fix to restore differentiability:
4004      place at which packages_init_variables is called in
4005      initialise_varia is crucial for reverse control flow.
4006    o modifications in GMRedi to enable stable adjoint
4007      (corresponding modif's in thermodynamics, dynamics)
4008    o added missing hook for sponge layer code in external_forcing
4009    o modified test cost functions
4010    o storing in gad_advection (plus removal of write(0,*)!
4011    o missing headers TR1.h added in convective_adjustment routines
4012    o errorMessageUnit set non-equal zero in eeboot
4013      (conflict on some platforms, e.g. IBM SP3)
4014    o modified carbon verif.
4015    
4016    checkpoint44h_pre
4017    o vertical grid option: allow to put the Interface at the middle between
4018      2 cell-centers ; replace delZ in pkg/kpp by drF.
4019    o GM Advective form: Tracers are advected using the residual transport (=
4020      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
4021    
4022    checkpoint44g_post
4023    o fix surface correction term in multiDimAdvection (affects plume_on_slope
4024      results) ; ifdef missing in thermodynamics.F
4025    
4026    checkpoint44f_pre,checkpoint44f_post
4027    o added PTRACERS package
4028      This allows an arbitrary number of passive tracers to be integrated
4029      forward simultaneously with the dynamicaly model.
4030      + Implemented so far:
4031        - basic forward algorithm (time-stepping, advection, diffusion, convection)
4032        - I/O and checkpointing
4033        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
4034      + Not implemented so far:
4035        - KPP
4036        - OBCS
4037      + No specific example supplied (yet) but global_ocean.90x40x15 has the
4038        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
4039        line in data.pkg.
4040      + This package is disabled by default since it increases storage.
4041    
4042    
4043    o testscript: added -cleanup option
4044    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
4045                 b) enable to filter 2D fields.
4046    
4047    checkpoint44e_pre,post
4048    o re-wrote convective adjustment to use pre-calculated weights
4049      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
4050      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
4051      Original calls to convect() still in place.
4052    
4053    chkpt44d_pre,post
4054    o added missing EXCLUDE_MONITOR flags
4055    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
4056      (incompatible typ in MIN/MAX expressions caused problems
4057      on IBM SP3)
4058    o in genmake added variable MAKEDEPEND
4059      plus resetting for case SunOS
4060    o added timer_stats.c routine for IBM SP3
4061    o removed variables in dynamics
4062    !!! I forgot to create tag chkpt44d_pre !!!
4063    !!! But chkpt44d_pre = chkpt44c_post    !!!
4064    
4065    o real fresh water flux implemented with non-linear free-surface.
4066    
4067    chkpt44c_pre,post
4068    o few fix (mask in shap_s2, EmPmR in external_field_load,
4069      USE_NATURAL_BCS in solve_for_P);
4070    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
4071    
4072    checkpoint44b_pre/_post
4073    o merge of relevant stuff from the ecco-branch:
4074      - genmake: removed $S64 overwrite for case SunOS
4075      - pkg/exf: update and corrections for field swapping and obcs
4076      - pkg/ecco: parameter lists for the_model_main, the_main_loop
4077                  harmonized between ECCO and MITgcm
4078      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
4079                      updated checkpointing_lev... lists for obcs
4080      - model/src: minor changes in forward_step, plot_field
4081                   added directive for divided adjoint in the_main_loop
4082      - pkg/mdsio: added mdsio_gl_slice
4083    
4084    o check parameters & config (chkpt44a_pre,post)
4085    o OBC and NonLin_FrSurf.
4086    
4087    checkpoint44
4088    o fix bug in mom_vi_del2uv
4089    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
4090    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
4091    o update AIM experiments (NCEP input files)
4092    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
4093    o added some stuff for AD
4094    
4095    checkpoint43
4096    o added two new advection tests
4097    o added global 4x4 degree ocean test
4098    o added test of H&S94 with free surface on cube
4099    o some final mods for gradient check, adjoint,...
4100    
4101    checkpoint42
4102      Fixed AD-related problems:
4103    o Store directives up-to-date with re-arranged Adams-Bashforth
4104      (mainly thermodynamics.F)
4105    o New store directives for multi-dim. advection schemes
4106      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
4107      * new common block and key passkey
4108      (mainly gad_advection.F)
4109    o Modified store directives for split of dynamics/thermodynamics
4110      for the case ALLOW_KPP
4111    o Cleaned argument list for timestep_tracer.F
4112    
4113    checkpoint41
4114    o re-formatted/added comments in prologues of key subroutines
4115      to work with protex
4116    
4117    checkpoint40
4118    o moved calc_gs, calc_gt and calc_tr1 back to model/src
4119    o added FLT (floats) package from Arne along with demo. experiment
4120    o re-arranged Adams-Bashforth scheme for tracers to allow easier
4121      implementation of forward-in-time forcing terms
4122    o more mods for non-linear free-surface including new variable
4123    o modified multi-dim method to work on cube
4124    o bug fix in KPP (from DM)
4125    
4126    checkpoint40pre9
4127    o added DST advection schemes
4128    o fix MPI bug on SGI's
4129    o modifications for non-linear free-surface
4130    o fixed conditionals for fixed flow/passive tracer only mode
4131    o added tension/strain form of stress tensor
4132    o changes to commenting of arguments for TAF/TAMC
4133    o added/updated many matlab scripts
4134    o added multi-dimensional advection method for tracers
4135      
4136    checkpoint40pre8
4137    o new package rw/
4138      Added method for dumping intermediate local arrays:
4139      mdsio_writetile - same as mdsio_writefield except works from inside
4140                        bi,bj loop
4141      mdsio_writelocal - same as mdsio_writetile except works for local
4142                         arrays
4143      write_local_r? - higher-level wrapper for mdsio_writelocal
4144      Controlled by diagFreq. Defaults to zero (ie. no dumps)
4145      Example given at end of mom_vecinv.F that dumps some local arrays.
4146    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
4147      control flux-form versus vector invariant code.
4148      Switch is runtime flag vectorInvariantMomentum (defaults to false)
4149      or genmake -DISABLE ...
4150    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
4151      (additional storing is now needed for case vecinv;
4152      currently nothing implemented to switch this storing off
4153      in case fluxform is used since no CPP flag available).
4154    
4155    checkpoint40pre7
4156    o bug fix in dynamics.F
4157      calc_viscosity called before k=1,Nr loop.
4158    o added some #ifdef's ALLOW_PASSIVE_TRACER
4159    o cleaned initialisations in ctrl_map_ini
4160      related to TAF
4161    
4162    checkpoint40pre6
4163    o split dynamics into thermodynamics & dynamics
4164    o corresponding split of calc_diffusivity into
4165      calc_diffusivity, calc_viscosity
4166      (kpp_calc_diff, kpp_calc_visc).
4167    o Added diffkr, kapgm to control variables
4168    o bug fix in gmredi_slope_limit for ldd97
4169    
4170    checkpoint40pre5
4171    o proper initialization of Adams-Bashforth time stepping
4172      + uses forward step for very first step of model (iter=0)
4173    o re-generated *all* output since almost all output is modified by this
4174      change (sorry but we've been putting this one off for about 2 years)
4175      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
4176        *not* regenerated since they are already out of date and I don't
4177        want to create the impression that they are suddenly working.
4178    o removed KAP stuff for DEC's
4179    o modified/added many .cvsignore files in */code and */input
4180    o added new expt "solid-body.cs-32x32x1"
4181      + this uses an alternative form of ini_curvilinear_grid.F which
4182        is not necessarily any better than the current one...
4183    
4184    checkpoint40pre4
4185    o added re-initialisations of utrans,vtrans,rtrans in
4186      calc_common_factors which are crucial for TAF.
4187    o extended iMin,jMin range for calc_common_factors,
4188      calc_diffusivity
4189    o added option ALLOW_PASSIVE_TRACER
4190    o a few minor updates and fixes
4191    
4192    checkpoint40pre3
4193    o created calc_gtr1.F for gad package
4194    o split the_main_loop and re-introduced forward_step
4195    o some recomputations of nIter0 for TAMC
4196    
4197    checkpoint40pre2
4198    o Updated to latest branch of AJA, JMC
4199    o Added gradient check package
4200    o Added routines for passive tracer handling
4201    o Added carbon sequestration sensitivity experiment
4202    
4203    checkpoint39
4204     o Modifications and fixes to support TAMC
4205       (mainly missing or wrong directives)
4206     o Corrected common blocks when fooling TAMC to produce adjoint I/O
4207       in addummy_in_stepping
4208     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
4209     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
4210     o Included following packages:
4211       cal: calendar
4212       exf: external forcing
4213       ecco: essential routines to control use of cal, exf
4214             (NB: this is not the full ECCO environment)
4215     o disabled some packages by default in genmake
4216    
4217    checkpoint38
4218     o see notes_c37_adj.txt
4219     o corrected wrong layer index in external_forcing_t
4220     o replaced the_main_loop/forward_step by the_main_loop
4221     o removed forceoutput from write_state
4222       (replaced criteria for initial/final state)
4223     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
4224    
4225    checkpoint37
4226     o mdsio.F routine split and packaged in pkg/mdsio
4227       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
4228        used unless genmake -disable=mdsio)
4229     o allow a more precise surface-geopotential gradient for the atmosphere
4230       taking into account the change in space of Alpha (=1/rho) at the surface.
4231     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
4232       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
4233     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
4234       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
4235       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
4236     o Time-Average diagnostics defined as a pseudo package "timeave".
4237     o pickup files : old pickup (before c35) did not work with new code (c35
4238       and after) unless activating 2 commented lines in initialise-varia.
4239     o Non-Hydrostatic pickup file Pb fixed.
4240     o bug with Rigid-lid version (since c35) fixed.  
4241    
4242    checkpoint36
4243     o implement Crank-Nickelson barotropic time-stepping
4244     o recover Time-Average diagnostics
4245     o fix Pb in checkpoint (PR#19)
4246     o AIM become a standard package ; clean unused CPP_kees
4247    
4248    checkpoint35
4249     o subtantial rewrite of dynamics.f
4250     o allows staggered time-stepping
4251     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
4252     o added bottom drag (linear + quadratic)
4253    
4254    checkpoint34
4255     o Modified exchange routines for correct reverse simulation.
4256     o Added verification output to comply with bug fix in impldiff.F
4257       as of c33 (exp2, natl_box).
4258     o Corrected store directives in dynamics.F
4259     o Corrected array boundaries in impldiff.F
4260     o Corrected array dimensions in gmredi.
4261       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
4262     o Added routine GLOBAL_SUM_INT to global_sum.F
4263     o Added mdsio_gl.F for ECCO purposes.
4264    
4265  checkpoint33  checkpoint33
4266   o Fixed bug in lower BC in impldiff.F   o Fixed bug in lower BC in impldiff.F
4267   o Fixed confusion about units of forcing arrays in FFIELDS.h   o Fixed confusion about units of forcing arrays in FFIELDS.h

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