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revision 1.533 by jmc, Tue Aug 16 22:50:56 2005 UTC revision 1.1112 by dfer, Fri May 29 18:46:03 2009 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice:
8      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
9        of LSR (this change is expected to change the results slightly because now
10        it uses slightly difference moduli from the second last LSR solution, but
11        that is more consistent with the stress computations; this part of the code
12        is not tested in the verification experiments)
13      - fix diagnostics for flux of ice in case of B-grid
14      - turn strain rates eij and press into global fields within global
15        common block in SEAICE.h for more straighforward diagnostics
16      - fix diagnostics for principal stress components, press, zeta, eta
17        to give something meaning full
18    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
19      new output (all 4 tests) using default rotationPeriod.
20    o pkg KPP:
21      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
22      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
23        and normal grid from 1 to Nr)
24    o Fix computations of L4rdt in mom_calc_visc.F
25    o eesupp:
26      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
27      should be called before a "stop" if we know that all process are going
28      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
29    
30    checkpoint61o
31    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
32    o model/src/ini_curvilinear_grid.F:
33       compute angleSin/CosC when they are not read from a file
34    o pkg/seaice:
35       add pseudo time stepping for LSOR
36    o pkg/exch2:
37       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
38    o pkg/seaice:
39       Adding separate sea ice albedo, drag coefficients, and HO in Southern
40       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
41    o SingleCpuIO:
42       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
43    o pkg/seaice:
44       put exchanged variable in (local) common block for MPI+Multi-Threads
45       to work (necessary with exch1, and for now with exch2 too).
46    o verification: to get more experiments tested with mpi, mth and mpi+mth,
47      change tiling of:
48       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
49       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
50      update output of exp:
51       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
52       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
53      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
54                       (note: output.txt generated on faulks using only 1 tile)
55    o eesupp & mdsio (SingleCpuIO):
56     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
57       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
58       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
59     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
60     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
61       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
62    o pkg/exch2:
63     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
64       read parameter file "data.exch2" if it exists; otherwise try default regular
65       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
66     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
67       with new code (not to be used, just as a backup solution).
68     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
69       in utils/exch2/input.
70    
71    checkpoint61n
72    o eesupp & mdsio (SingleCpuIO):
73      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
74        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
75        receive real*4 array (instead of real*8) to read/write 32.bit files.
76        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
77         and remove new mapping S/R)
78    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
79      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
80        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
81        when using exch2. Add S/R to map global io-buffer to global model array.
82      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
83    
84    checkpoint61m
85    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
86      and add 3 other S/R for other types (R4,R8,RS).
87      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
88    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
89     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
90     - reduce number of macro definitions (keep only those which are used);
91       can always call directly the corrresponding S/R if needed.
92     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
93       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
94     Fixed wrong type of arg in:
95       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
96       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
97     To fix: global_sum of var in common block is wrong (multi-threaded) in:
98       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
99     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
100    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
101      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
102    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
103    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
104      edges are closed (zero depth); might happen with "blank tiles";
105      for now, disabled if using OBCS.
106    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
107      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
108    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
109      to reduce length of 1.D array print in STDOUT.
110    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
111      + use 48 tiles (16x8): this will allow to test "blank tiles".
112    o start to test MPI + multi-threaded (change testreport to skip tests
113      where number of tiles do not match).
114    o genmake2: add option "-omp" to turn on Open-MP ;
115      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
116    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
117      and keep the original tile numbering. Note: compatible with old
118      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
119    
120    checkpoint61l
121    o Overlaps had been forgotten in calculating ijk keys : fixed
122    o fix cyrus makedepend for gcc 4.4
123    o experiment fizhi-cs-aqualev20:
124      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
125      and generate new output. Note: new output is much closer to the old
126      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
127      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
128    o pkg/fizhi:
129     - change to avoid indices going deliberately over array-bounds
130     - remove unnecessary MPI stuff
131     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
132     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
133       does not go over array-bounds and therefore returns reliable output.
134     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
135       this S/R has 4 output arguments, which are used inside "get_alarm";
136       when it is called with the same variable "ndum" in place of several
137       output arguments, this produces weird side effect inside "get_alarm"
138      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
139       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
140       address) and produces error.
141    o tools/gemake2: (March 27-29 2009)
142      with option "-mpi": link *_mpi files from "MODS" dir (this is what
143      testreport does).
144    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
145    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
146       update lab_sea.lsr & lab_sea.salt_plume results
147    o pkg/seaice:
148      Major overhaul of the LSOR solver: change discretization from original
149      finite differences to finite volume. The old routine is still in the
150      file seaice_lsr.F and can be turned on with the CPP-flag
151      SEAICE_OLD_AND_BAD_DISCRETIZATION
152      Along with this change, the discretization of the strain rates is changed.
153      The same flag turns on the old discretization in seaice_calc_strainrates.F
154      All verification experiments with seaice are affected (except for
155      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
156      results by setting the above flag.
157      Further changes involve changes in defaults:
158      - ALLOW_FLOODING is defined and turned on by default
159      - SEAICEadvSnow = .true. is now the default
160      - SEAICEadvSalt = .true. is now the default
161      - SEAICEadvAge  = .true. is now the default
162      - SEAICE_clipVelocities  = .false. is now the default
163                                         (as per J. Zhang's recommendation)
164      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
165        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
166      - seaice_growth: replace computation of UG by a simple copy from wspeed
167    
168    checkpoint61k
169    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
170      seaice_lsr: fixed a few metric terms,
171                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
172                  add more debugging diagnostics
173      seaice_evp: removed superfluous many metric terms of FV discretization
174                  of stress divergence
175                  affects lab_sea, lab_sea.hb87
176      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
177                  of stress divergence for non-evp solver
178                  (this part is not tested anywhere)
179      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
180                  they were effectively only half slip
181                  affects lab_sea.hb87
182      updated all relevant verification experiments (except lab_sea//output_adm.txt
183        which was left over, but fails at level 7 & 6)
184    
185    checkpoint61j
186    o pkg/seaice: turn a few hard wired parameters into run time parameters
187    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
188      time in seconds as promised by the usints in seaice_monitor and exf_monitor
189    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
190      that are not cubed-sphere grids
191    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
192    o pkg/ctrl:
193      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
194    o non-hydrostatic (calc_gw.F):
195      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
196      update output of exp. global_ocean.cs32x15.viscA4
197    o remove backward compatibility for thetaMin,phiMin
198      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
199    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
200      interpolated wind field not only for curvilineargrid=.true., but also
201      for a rotated grid (rotateGrid=.true.)
202    o pkg/exf: add capability to bypass interpolation for runoff
203      by setting yet another CPP-flag
204    o eesupp/src, B-grid exchange:
205      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
206    o autodiff
207      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
208      allows to switch to single-prec common blocks;
209      corresponding switch occurs in tamc.h, integer isbyte
210      TAF store directivs "byte" and "kind" seem equivalent;
211      Most tamc.h have been updated correspondingly.
212    
213    checkpoint61i
214    o autodiff:
215      fix autodiff_sore/_restore indices for obcs
216      (spotted by I. Hoteit, M. Mazloff)
217    o pkg/autodiff, pkg/ctrl:
218      Add flag to reduce all tapelev I/O to single-prec.
219      In data.ctrl set
220        doSinglePrecTapelev = .TRUE.
221    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
222      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
223    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
224      real fresh water flux (not yet)
225    o pkg/mdsio & rw:
226     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
227     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
228    o pkg/flt:
229     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
230       init_fixed & ini_varia.
231     - clean-up & simplify linear interpolation S/R:
232       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
233     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
234     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
235     - add vert. coordinate & horiz. indices to output files.
236     - change vertical position in initial condition, from index to depth [m].
237     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
238       (easier to get to a curvilinear grid) ; delX,delY no longer used.
239    o pkg/ggl90: a few modifications:
240     - fix bottom boundary condition, and interpolation of KappaE
241       near top and bottom
242     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
243     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
244     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
245    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
246      (maintain temporary backward compatibility, until next checkpoint)
247    
248    checkpoint61h
249    o pkg/diagnostics with "periodic averaging diagnostics":
250      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
251    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
252    o pkg/obcs: fix loop ranges for balancing code
253    o pkg/flt:
254     - improve criteria for finding which tile owns a float.
255     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
256    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
257      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
258      with ocean biogeo)
259    o pkg/flt:
260     - do some cleaning and fix the restart ;
261     - add output.txt in flt_example/results to get this pkg tested.
262    o genmake2: add an EXTENDED_SRC option and flag.
263       for now, cannot be turned on on command line (only through genmake_local)
264    o pkg/mdsio: read/write vector:
265     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
266     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
267       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
268     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
269      (drop to 4 digits matching for grad). But this test does not look very
270      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
271    
272    checkpoint61g
273    o pkg/flt:
274      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
275       + make OPTIONS file more standard.
276      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
277      - fix _BYTESWAPIO CPP-Flag
278      - standard reading of file-parameter "data.flt"
279      - fix argument list of S/R FLT_RESTART
280      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
281    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
282    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
283      a still unfixed compiler/optimization bug
284    
285    checkpoint61f
286    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
287      update results of global_ocean.cs32x15.icedyn test.
288    o move getcon.F from model/src to pkg/fizhi.
289    o pkg/exf: add parameter for extrapolation of temp up to the surface
290       and option to prevent negative evap (in bulk_largeyeager04 only).
291    o Prather Advection scheme: fix tracer conservation for divergent flow
292      (e.g., when using NonLin Free-Surface).
293    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
294    o gmredi (Visbeck-variable-K):
295     - add more parameters to Visbeck-variable-K.
296     - use a 5 points average for dSigmaR in Visbeck-K calculation
297       (more "homogenous": same stencil and same weights as in dSigmaH)
298     - update output of ideal_2D_oce experiment.
299    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
300      (#undef REAL4_IS_SLOW)
301     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
302       coordinate variable
303     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
304       (surface forcing fields), removes some of the functionality
305     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
306     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
307       probably not all: copy _RS surface flux fields to RL field before
308       calling DIAGNOSTICS_FILL
309     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
310       real*4 (CALL EXCH_*_RS) versions.
311     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
312       (generate new output).
313    
314    checkpoint61e
315    o gmredi (Visbeck-variable-K):
316      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
317      - change computation of Visbeck-K where Slope > Smax :        
318        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
319        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
320    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
321      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
322    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
323    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
324      does not become too large (to avoid precision problems in implicit-diffusion
325      solver); update ideal_2D_oce output.
326    o pkg ggl90:
327      - in ggl90_cal.F: compute only one set of visc/diff, used to
328        step forward TKE/T/S/momentum
329      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
330        have Prandlt =1)
331    o gmredi (fm07):
332      - add lower limit on Transition layer thickness + lower limit on 1/lambda
333      - allow to set few more params from data.gmredi
334    o pkg ggl90:
335          - add missing sqrt(2) factor in computation of mixing length
336            scale in ggl90_calc.F
337            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
338    
339    checkpoint61d
340    o adjoint modifs
341      - adapt to new field rhoInSitu
342      - allow to revert from StoreDynVars2D, StoreDynVars3D
343        to individual fields
344        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
345    o store 3-D (in-situ) density in commom block (DYNVARS.h)
346     - save 1 rho computation.
347     - no longer modify T & S inland when using down_slope pkg.
348    o gad_som : allow to switch to SOM advection for T & S without corresponding
349      pickup files (using new S/R: MDS_CHECK4FILE).
350    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
351      (for useSingleCpuIO to work in multi-threaded)
352    o pkg/shelfice:
353     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
354       with SHELFICEtopoFile in data.shelfice
355     - move code for reading ice shelf topography and modifying hFacC into separate
356       subroutines of the shelfice package
357     - separate initialisation of "fixed" and "variable" variables
358     - kTopC is not (yet) replaced by kSurfC, although this is possible
359    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
360    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
361      and rename:
362      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
363      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
364    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
365    
366    checkpoint61c
367    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
368      to add mass source/sink of fluid in the interior (3-D generalisation
369      of oceanic real-fresh water flux).
370    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
371    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
372    o new pkg: down_slope
373      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
374      - presently, modify T & S inland (dwnslp_calc_rho.F).
375        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
376      - implementation for ocean in P-coords not tested.
377      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
378    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
379      (to facilitate conversion of oceanic pkg to p-coordinate).
380    o change FIND_RHO to FIND_RHO_2D :
381      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
382    o new pkg: cheapaml
383    
384    checkpoint61b
385    o exch2:
386      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
387      - no longer depend on the order sequence (N,S,E,W).
388      - 3rd exchange no longer needed (tested with 24 tiles).
389      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
390      - exch_UV_A-grid readily available (but not yet tested).
391      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
392      (both are no longer needed) in exch_uv: no effect in forward run; but
393       get truncation error differences with adjoint exch.
394    o exch2:
395     - change index-bounds storage (moved from target to local tile,
396       more intuitive this way) ; rename/remove some variables.
397     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
398    
399    checkpoint61a
400    o exch2/matlab-topology-generator:
401      fix bug in index bounds for N-S internal exchange (hard to tell if this
402      had any effect on the solution).
403    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
404      is exceeded
405    o testreport: modify syntax of awk, so that it works also with
406      awk, and not only with nawk and gawk
407    
408    checkpoint61
409    o autodiff
410      Change default for TAF usage by removing argument '-nonew_arg'
411      This changes TAF subroutine argument list (ordering of active var.)
412      Omission of this flag leads to incompatibility w.r.t. TAMC
413      To restore TAMC-compatibility, need following modifs:
414      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
415      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
416      Tested TAF version is 1.9.22
417      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
418    
419    checkpoint60
420    --->>> This is the last checkpoint for which generating the adjoint
421    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
422    --->>> by default.
423    --->>> Future checkpoints will ommit this flag by default.
424    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
425    o pkg/grdchk: Add gradient check to etan0 perturbations.
426    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
427    o pkg/autodiff: more flexibility in zeroadj.
428      model/src: modifying do_oceanic_phys.F accordingly.
429    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
430    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
431      special setup of gmredi for which the adjoint is stable
432      enough for parameter optimization.
433    o bridging the gap between eddy stress and GM.
434      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
435          along with a change in CPP option (now ALLOW_EDDYPSI).
436      -> when using GM w/ GM_AdvForm:
437          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
438          is applied either in the tracer Eq. or in momentum Eq.
439          depending on data.gmredi (intro. GM_InMomAsStress).
440      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
441      The key modifications are in model/src/taueddy_external_forcing.F
442      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
443    
444    checkpoint59r
445    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
446      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
447      fix option to read coriolis(@ cell-corner) from files with CS-grid.
448    o pkg/mnc: add some attributes to standard 1D-coordinate variables
449    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
450      mass points, when using mnc for output
451      - add runtime parameter (missing_value, missing_value_int) to override
452        default (which is the value of getcon('UNDEF'))
453    o pkg/mnc: prepare mnc for the actual use of missing values with the
454      diagnostics package: small fix in mnc_cw_readwrite.template and more
455      initialisation of never used fields
456      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
457      versions
458    o pkg/thsice/thsice_ini_vars.F added default initial values so that
459      thermodynamics sea ice solver does not blow up when some initial fields
460      are missing.
461    o move from external_forcing_surf.F to ini_forcing.F
462      the p-coord. hack consisting in using pLoad to set phi0surf ;
463      update output of tutorial_global_oce_in_p (affected @ truncation level).
464    o Freshen up a bit hs94.1x64x5, notably:
465      remove rotationPeriod and tRef=5*0. (adjoint only), and add
466      exactConserv=.TRUE.
467    o pkg/generic_advdiff:
468      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
469      applies to files where Temperature & Salinity 2nd Order moments are used.
470    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
471      this uses a dynamically allocated internal state data structure
472      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
473      and requires a fortran 90 compiler
474    
475    checkpoint59q
476    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
477       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
478    o Refresh tutorial_global_oce_biogeo, notably:
479      - change bathymetry (put back seamounts in ACC, use hFacs)
480      - change EOS (POLY3 --> JMD95Z)
481      - use Bryan-Lewis vertical diffusivity
482      - use multidimensional advection
483      - remove old virtual virtual in dic pkg, now done through ptracer pkg
484      - change a couple of parameters in dic pkg
485    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
486    o pkg/obcs: change default to OBCSfixTopo = .true.,
487      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
488      - replace "debugMode" with "debugLevel .GE. debLevB"
489    o implementation of TAF directives for gchem,cfc,dic
490    o remove "exp5" (replaced by tutorial_deep_convection).
491    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
492      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
493      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
494      --> changes results in exp4, seaice_obcs
495    o tutorial_deep_convection :
496      update the set-up and increase resolution and domain size ; start
497      from pseudo initial conditions = output at t=120mn in order to see
498      something happening when running testreport.
499    o pkg/seaice: add os7mp as an advection scheme
500                  add check for advection schemes
501                  add a flag for restoring T and S underneath sea ice
502    o pkg/my82: add netcdf-support and diagnostics
503    o thsice pkg:
504      - Now hsMax limits snow height by turning it into ice following
505        flooding scheme (and now conserving energy)
506      - Slight rewriting of the formula in thsice_calc_thick.F
507      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
508      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
509    
510    checkpoint59p
511    o gchem / dic / cfc :
512      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
513      - add new parameter files: "data.dic" & "data.cfc" ;
514      - various re-arrangement in initialisation & header file ;
515      - fix tutorial_global_oce_biogeo for multi-threaded test.
516    o pkg/dic: test for "pickup_dic" file when restarting ;
517      if no pickup-file, can restart with a re-initialised pH (same as it did
518      before) providing pickupStrictlyMatch is set to False.
519    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
520      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
521    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
522      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
523    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
524     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
525       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
526    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
527       scheme to use for vorticty-term ;
528     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
529       (with default selectVortScheme, return to original discretisation)
530     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
531    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
532    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
533      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
534      also fix diagnostics VISCAHW & VISCA4W.
535    
536    checkpoint59o
537    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
538    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
539      move a few statemens out the main loop into separate loops
540    o pkg/shelfice:
541      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
542        (kg/m^2/s), does not break tests, because in verification/isomip,
543        rhoConstFresh=rhoConst (by accident)
544      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
545      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
546        new file model/src/seawater.F, so that they are available for all pkgs.
547      - convert potential temperature into in-situ temperature. This changes the
548        isomip tests => update tests
549    o add a flag writePickupAtEnd (default=true) to be able to suppress
550      writing a pickup at the last timestep
551    o tools/mpack-1.6 :
552      - disable automake (not working) and autoconf (not needed).
553      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
554        also cleaner with much less compilation warnings.
555    o pkg/profiles:
556      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
557      (for "less than 32 characters name" compiler requirement)
558    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
559      conditions that have a different sampling frequency than S/T/U/V obcs
560    o pkg/diagnostics (stats-diags):
561      - fix global Min/Max in case 1 processor get only empty tiles
562    o genmake2: replace (4 times)
563         make genmake_tc_1.o >> genmake_warnings 2>&1
564      with
565         COMM="$CC $CFLAGS -c genmake_tc_1.c"
566         echo $COMM >> genmake_warnings
567         $COMM >> genmake_warnings 2>&1
568      to make genmake2 always see the value of CC as specified in the optfile.
569    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
570      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
571      - modify verification advect_cs test to test SOM-advection on CS-grid.
572    o pkg/ctrl:
573      - Rewrite of ctrl_map_ini_ecco.F,
574        introducing a generic routine (ctrl_map_ini_gen.F).
575      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
576    
577    checkpoint59n
578    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
579      number in dedicate array "hdiag":
580      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
581        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
582      - many small changes (integer format) for large number of diagnostics
583      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
584        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
585    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
586      usingSphericalGrid, this allows to define the rotated grid coordinates
587      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
588      geographical coordinates according to the inverse of the rotation defined
589      by the Euler angles, so that Coriolis parameter and online-interpolation by
590      exf works with the geographical coordinates on XC/YC/XG/YG.
591      Naturally, this feature does not work with all packages, so some
592      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
593      profiles), because there the coordinates are assumed to be regular
594      spherical grid coordinates.
595    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
596      - introduce isopycnal diffusion coefficient control.
597    o tools/adjoint_options:
598      - additional control vector components.
599    o pkg/mnc: have mnc create marginally meaning full coordinate variables
600      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
601    o pkg/mypackage:
602      - add example of read/write pickup for state-var ;
603      - add entry points to the main code for state-vars diags & write-pickup.
604    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
605      transitions for useExfYearlyFields
606      - add new subroutine that determines the file to read from for
607        use*YearlyFields = .TRUE. and .FALSE.
608      - add a verification experiment to global_with_exf that tests
609        useExfYearlyFields with USE_EXF_INTERPOLATION defined
610    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
611      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
612      subroutines (which could be generated from a template, because they are
613      almost identical), for now they are included in obcs_prescribe_read.F for
614      simplicity
615    o pkg/exf:
616      - add a little more diagnostic to exf_interp_read (in analogy to
617        mds_read_field, can be turned off with debugLevel < debugLevA=1)
618      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
619        ugly but fast by unrolling short inner loops, inserting a unroll=8
620        directive in routine lagran, and splitting a loop and making do while the
621        outermost loop (the latter requires the intoduction of index arrays)
622    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
623    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
624      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
625    o verification/seaice_obcs: updated for restart test and latest options
626    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
627      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
628      for now this is only available for the C-grid code and also within
629      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
630    
631    checkpoint59m
632    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
633      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
634    o gad_som : fix flux output (& diagnostics) to have same units as other  
635      advection scheme fluxes (was previously multiplied by deltaT).  
636    o added verification/seaice_obcs both to test seaice open boundaries
637      and to provide an example matlab scrpt for generating them
638    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
639    o pkg/salt_plume: clean up salt_plume_frac.F to
640      remove redundancy in PlumeMethod 1 and 4
641    o pkg/kpp: added saltplume diagnostics
642    o pkg/obcs and pkg/seaice:
643      - do not set uice and vice to zero when OB*icefile are unspecified
644      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
645      - moved seaice tracer obcs after call to seaice_growth
646    o pkg/salt_plume: added various options for salt plume depth
647      criterion and for vertical distribution of the salt
648    
649    checkpoint59l
650    o pkg/ptracers: new version of ptracers pickup:
651      read meta file and write only fields which are needed to restart.
652      ( same logic as main pickup file ; also using pickupStrictlyMatch )
653    o pkg/seaice:
654      - add timescale for melting due to warm mixed layer as a means of
655        setting SEAICE_availHeatFrac more conveniently
656      - add a CPP-flag/runtime parameter check for flooding algorithm
657      - reformulated availHeat in seaice_growth.F to be independent of AREA
658    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
659      unit changes
660    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
661    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
662      SX vector computer.
663    o pkg/seaice:
664      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
665        seaice forcing fields can now be read only through pkg/exf
666      - removed some unused halos
667    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
668    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
669      or U/VICE from U/VWIND before computing U/VSTRESS
670    
671    checkpoint59k
672    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
673      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
674    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
675      all experiments pass when compile with un-initialised var. checking option.
676    o added pkg/salt_plume
677    o script to test restart (for now, in MITgcm_contrib/jmc_script)
678    o pkg/seaice: new read/write pickup version.
679      read meta file and write only fields which are needed to restart.
680      ( same logic as main pickup file ; also using pickupStrictlyMatch )
681    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
682    o lab_sea.hb87: modify the domain & update output.hb87.txt :
683      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
684      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
685      process. Fixed here by closing the domain at the Northern boundary.
686    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
687    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
688      a set of consecutive levels in/from a 3-D array.
689    o pkg/ptracers:
690      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
691      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
692    
693    checkpoint59j
694    o in pkgs: dic, obcs, offline, rbcs:
695      standard way to compute coeff. for time interpolation between 2 time reccords
696      which retains full precision (& make results less dependent on compiler).
697      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
698    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
699      packages instead of reading ice cover and wind speed separately
700    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
701     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
702      to allow to compile customized code before the update)
703    o cleaning-up:
704      - fix CPP instruction syntax in pkg/obcs
705      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
706        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
707      - fix some threads issue in IO parts.
708    o pkg/dic:
709      - add tons of "_d 0" (--> much better testreports !)
710       and then update outputs of tutorial_global_oce_biogeo
711    o pkg/mom_fluxform:
712      add a special version of momentum advection intended to conserve momentum
713      next to a bathymetry step or a coastline edge. (default = off = #undef)
714    o new read/write pickup version:
715      - for now, only implemented for main (mdsio) pickup file.
716      - write out only what is needed to restart; merge pickup_nh , pickup_ph
717        and main pickup together.
718      - read meta file; read only what is needed to restart; stop if a field
719        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
720        if it make sense (even if the restart is not perfect).
721      - if no meta file, assume that pickup to read corresponds exactly to
722        a pickup that would currently be written.
723      - read pickup written in the old format (until checkpoint59i) if it
724        recognizes an old meta file (no field-list).
725      - add a meta file in exp. which starts from a pickup: 2 cases:
726        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
727         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
728        b) a meta file describing the content of the associated pickup file
729         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
730    o pkg/mdsio & pkg/rw:
731      - new routine to read a meta file ; new set of routine to read
732        Multiple-fields file (with meta file).
733    o added open boundary conditions capability for seaice
734        HSNOW, HSALT, UICE, and VICE
735    
736    checkpoint59i
737    o adjoint:
738      * fix multiDimAdvection adjoint
739        (partial recomputation problem by TAF for fVerT(:,:,kDown)
740        and comlev1 size definition (maxpass vs. max. number of tracers)
741      * verification/global_ocean.90x45x15 adjoint now tests
742        NLFS and multiDimAdvection using DST3 (=30)
743      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
744    o pkg/kpp: add "_d 0" to real constant (if missing);
745      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
746      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
747    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
748      for internal parameters related to restart process (formerly from PARAMS.h)
749      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
750    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
751      as argument. (only atm2d & obcs write_pickup have not yet been updated)
752    o pkg/monitor:
753      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
754      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
755      - account for deep Atmosphere factor and density factor (anelastic)
756    o added open boundary conditions capability for seaice HEFF and AREA
757    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
758      thermodynamics
759      - requires a little reorganization, which affects the testreport results
760        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
761        so that now the conservative form is tested
762      - add a few comments
763    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
764    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
765    o add new diagnostics to seaice: advective, diffusive fluxes (only for
766      multidim-advection, for scheme 2 they are not filled) and transports,
767      thermodynamic growth rates
768    o change units of EmPmR (inside the code, + within coupling interface)
769      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
770      Affects results @ truncation level (cg2d match) and update output of
771       experiments: lab_sea(6), global_ocean.90x40x15(10),
772      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
773      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
774      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
775      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
776    
777    checkpoint59h
778    o pkg/exf:
779      - improve vectorization by moving if-statement out of loops in
780        exf_mapfields, exf_radiation
781      - exf_bulkformulae.F: introduce 2D fields and vectorize code
782    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
783    o testreport:
784      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
785        monitor & update offline_exf_seaice exp. output.
786      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
787    o pkg/seaice:
788      - bug fix in the evp solver: boundary conditions were affected be
789        masking of zMax/zMin (changes results)
790      - minor bug fix in boundary conditions in seaice_calc_strainrates
791        (changes results for no_slip)
792      - seaice_lsr.F: make interpolation of eta dependent on boundaries
793      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
794      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
795        stress formulation and no-slip boundary conditions
796    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
797      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
798    o pkg/seaice: a first HSALT time stepping equation has been checked in
799    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
800      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
801      without requiring DO-IF statements
802    o pkg/thsice:
803      use continuous power-law function for partition of energy between lateral
804      melting/freezing and thinning/thickening ; old code using step function
805      still available with #undef THSICE_FRACEN_POWERLAW
806      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
807    o testreport: change AD testing : check against results/output_adm.txt
808      using same scripts as for forward test.
809    
810    checkpoint59g
811    o adjoint testing: in preparation for changing testreport:
812      - output format: cost and grad written on separated lines
813      - ad output results in directory "results" (instead of "results_ad")
814    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
815    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
816    o pkg/ecco: allow user defined cost function contributions
817    o testreport:
818      Allow to choose (per experiment) the list of tested output variables
819       and the main variable (used to issue a pass/FAIL ) ;
820      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
821      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
822      Also modify printing of summary:
823       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
824       b) echo the list of tested variables in the individual summary.txt of
825          each experiment.
826    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
827      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
828      (but still depend on the tile decompostion of the domain).
829    o pkg/seaice: change a discretization detail to make the B-grid code
830      "more symmetric". This change is likely to remove all "ridges/leads" that
831      where quasi-aligned with the grid in B-grid solutions. It may also be
832      the solution to the stress coupling issues with the B-grid.
833    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
834      remove .cvsignore from input dir. (since testreport no longer run here).
835    o pkg/thsice:
836     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
837     - fix reshaping of sea-ice just after advection:
838       melt all the ice only if ice-volume is too small.
839     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
840       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
841     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
842    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
843      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
844    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
845      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
846      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
847      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
848      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
849      -> update output.txt
850    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
851     this affects truncation error: -> update output.txt of exp:
852      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
853      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
854    
855    checkpoint59f
856    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
857    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
858      a bounded range (in forward mode)
859    o pkg/ecco, ctrl, autodiff and mom_common:
860     internal parameter controls, completements of implementations
861    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
862    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
863      (not seem any difference in testing results).
864    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
865       at face corners.
866    o pkg/generic_advdiff:
867     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
868      loop range indices for computing vertical advection tendency
869      and do the calculation in the interior only (no overlap) ;
870      for now, only implemented for SOM advection (to save CPU time).
871     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
872    o exch2 adjoint
873      First set of changes:
874      - add exch2 hand-written adjoint templates
875      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
876        This will require cleanup in pkg/autodiff/*.F
877        (changed routines currently kept separate in verif. code/)
878      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
879        that used to hide exch2 or cubed-sphere specific code
880        (commented via 'cph-exch2')
881    o pkg/seaice
882      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
883    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
884       output of global_ocean.cs32x15.thsice .
885    
886    checkpoint59e
887    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
888      for B-grid vector (not yet tested) and C-grid vector (<- only used
889      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
890    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
891      (#ifdef ALLOW_SALT_PLUME)
892    o gather_2d/scatter_2d: removed halo regions
893    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
894      scheme and the corresponding test case (under front_relax dir). For now,
895      only available with Skew-flux form and not yet tested in realistic set-up.
896      adjoint: store directives updated, but gradient checks deteriorated,
897      so maybe GM/Redi adjoint is now broken.
898    o seaice adjoint
899      * add AREA, HEFF, HSNOW as control variable
900        (should not change lab_sea results)
901      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
902    o pkg/seaice:
903      * added computation of saltFlux in seaice_growth;
904        For time being, sea ice salinity is assumed constant
905        contribution of snow flooding to freshening of sea ice is neglected.
906        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
907        defaults to 0.0 in order to maintain backward compatibility.
908        Typical values for SEAICE_salinity are 4 to 10 g/kg.
909      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
910      * added SEAICE_availHeatFrac, which specifies fraction of surface level
911        heat content used to melt or grow ice
912      * commented out cap of HICE: it helps keep ice thinner
913      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
914      * applied OBCS T/S mask to HEFFM sea ice mask
915    
916    checkpoint59d
917    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
918     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
919     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
920    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
921     and change default value of parameter "GM_Small_Number";
922     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
923       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
924       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
925    o pkg/ecco: cost function when applying pkg/smooth to controls
926    o pkg/ctrl: add forcingPrecond run time parameter
927    o pkg/seaice:
928     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
929     - fix bug in metric terms of u-equation in LSR solver (implicit part),
930       changes verification/lab_sea
931     - rearrange implicit part of u-equation in LSR solver to make it easier to
932       read, understand, and debug. This causes changes at the truncation level.
933     - fix (serious) bug in the boundary conditions (sign error in the implicit
934       part) of the LSR solver. Changes all LSR results.
935     - fixed problem with HSNOW initialization to avoid thick snow when AREA
936       is initilized with small values - does not change lab_sea results.
937     - added HsnowFile initialization capability
938    o pkg/smooth: addition to model/src and pkg/ctrl so allow
939     initialization of pkg/smooth and application to control vector
940    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
941    o dependencies: pkg/profiles requires pkg/cal
942    o pkg/profiles:
943     - added option ALLOW_PROFILES_GENERICGRID
944         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
945         that interpolation information (grid points and coefficients) is provided
946         within the netcdf input files.
947         -> sample matlab scripts can be found in MITgcm_contrib/gael
948         that allow you to prepare netcdf input files.
949     - also modified: cleaner include statements, cleaner error print statements,
950       cleaner stops when error, and more tests of the netcdf input files consistency.
951    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
952    o pkg/seaice:
953     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
954       requires a new routine: seaice_diagnostics_fill.F
955     - make sure that seaice does not move if not forced (pressure replacement
956       method, Hibler and Ip, 1995), changes results
957     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
958     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
959       It is turned off by default (=-1.), because it changes the results.
960     - make it possible to read AREA from a file, too.
961    
962    checkpoint59c
963    o add S/R and diagnostics for oceanic mixed-layer depth
964    o move GMRedi call after all vertical mixing schemes (including KPP)
965    o pkg/thsice:
966     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
967      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
968    o pkg/obcs:
969     - bug fix for balance code
970    o pkg/seaice:
971      - allow values of SEAICE_elasticParm > 1
972      - add new parameter SEAICE_evpTauRelax as an alternative
973        to SEAICE_elasticParm
974      - make lsr boundary conditions free slip (by default), changes result
975      - add code for no slip boundary conditions for lsr
976      - set minimum of zeta to zero (and not 4e8) (changes results)
977      - add a cap on AREA after advecting AREA if seaice_growth is not called
978    o change calculation of Visbeck K:
979      - no longer depend on tapering scheme; instead, compute slope (limited
980        by GM_maxSlope). this is equivalent to what was comuted before with
981        clipping or linear tappering.
982      - fix vertical averaging (wrong by 1/2 level)
983      - leave the old version (but will not be maintained) within
984        #ifdef OLD_VISBECK_CALC / #endif
985      - update output of exp. ideal_2D_oce
986    o change error catch in calc_r_star to improve vectorization
987    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
988      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
989    o adjoint:
990      Re-organized adjoint checkpointing according to Matt Mazloff
991      (but with modifs/completions/cleanups)
992      Storing is now bundled into large arrays to optimized I/O
993      (and second step in cleanup of the_main_loop)
994    
995    checkpoint59b
996    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
997      - export/import (between ocean & coupler) fields needed for ocean DIC.
998    o pkg/seaice:
999      - get rid of three more exchanges seaice_calc_viscosities (required
1000        different loop boundaries in seaice_lsr and seaice_ocean_stress)
1001      - bug fix in seaice_ocean_stress (update of lab_sea required)
1002      - reduce loop boundaries to necessary minimum also in seaice_evp
1003      - go back to the old way of computing deltaC/Z as the adjoint likes that
1004        better
1005    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
1006      passive tracer to an Age Tracer) + update output.txt
1007    o pkg/exf:
1008      - implement A-grid / C-grid selection for wind-stress input files.
1009      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
1010      for now, in exf_bulk_largeyeager04.F only :
1011      - change implementation for case where windspeed + 2. components wind-stress
1012        are read-in. AND use rhoConstFresh to convert evap.
1013    o pkg/seaice:
1014      - use correct EXCH_UV for wind-forcing (on A-grid).
1015      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
1016        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
1017    o pkg/exf:
1018      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
1019      EXF_INTERPOLATION:
1020      - merge global_with_exf/code version of exf_interp_read.F
1021        to the main code ;
1022      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
1023        reading the file ; Important: This options needs to be defined to recover
1024        previous code.
1025        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
1026      - no longer loose real*8 precision along the way when using exf_iprec=64.
1027    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
1028      - change discretisation of evp-solver in order to avoid another exchange
1029        (changes lab_sea) and clean up a little
1030      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
1031        help the adjoint (this also changes the results slightly)
1032      - add a few "_d 0" where they had been missing in seaice_evp.F
1033      - cleaning up: remove unused seaice_calc_rhs.F
1034    o pkg/exf: some cleaning-up:
1035      - change various "constants" into runtime parameters
1036      - cleaned-up Large&Yeager04 routine which should eventually
1037        replace exf_bulkformulae.F (changed names of S/R and CPP)
1038        and merged various ALLOW_ATM_WIND options
1039     only used with thsice pkg (in thsice_get_exf.F):
1040      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
1041        which are used when useStabilityFct_overIce=TRUE (= the default)
1042      - change default values of ice & snow emissivity and scale downward LW
1043        by ice & snow emissivity.
1044    o pkg/thsice:
1045     fix few little problems, in thsice_calc_thickn.F:
1046      - growth vertically (and not laterally) if iceFrac == iceMaskMax
1047      - melt only laterally if hIce < hThinIce (as the comments say)
1048      and in thsice_extend.F:
1049      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
1050      - start to form ice as soon as the minimum ice-volume is reachable.
1051     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
1052      and cpl_aim+ocn
1053    o pkg/kpp
1054     - move computation of surface related input fields to KPP into a new
1055       subroutine kpp_forcing_surf.F
1056     - remove wrong (within bi,bj loops) EXCH calls.
1057     - little cleaning (add argument myThid in last position, cvs header ...)
1058     - for now, fix conservation problem by exchanging KPPviscAz (may not
1059       be the best fix)
1060    o pkg/seaice
1061     - check for inconsistent evp parameter/cpp-flag combination
1062     - remove leftover errIO flat for obsolete name list error handling
1063    o OpenAD
1064     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
1065    
1066    checkpoint59a
1067    o pkg/seaice: some parameter clarifications and a little bit of clean up
1068    o pkg/thsice: rename run-time parameters:
1069       himin       -> hIceMin
1070       himin0      -> hThinIce
1071       hihig       -> hThickIce
1072       i0          -> i0swFrac
1073       transCoef   -> bMeltCoef
1074       frac_energy -> fracMelting
1075      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1076       with default values (for now) that do not change the results.
1077      remove old version of thsice vars advection in pkg/seaice.
1078    o in FFIELDS.h:
1079      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1080      - make pLoad & sIceLoad always available (but still only used if
1081         ATMOSPHERIC_LOADING is #define).
1082    o pkg/kpp: replaced _KPP_RL with _RL
1083    o bug fixes for vertical diffusivity computations when both KPP and
1084        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1085        are no longer updating the vertical diffusivity array
1086        (passed as argument) but are (re-) setting those arrays.
1087    o pkg/seaice: fix bug in evp solver, while doing that
1088      - change (improve?) discretization of stress computations for both
1089        cgrid-lsr and evp solver
1090      - add a new routine to compute strain rates
1091      - the above changes lab_sea results
1092      - add no slip conditions for evp solver (off by default), lsr-version
1093        may follow
1094      - fix exchange for shear at Z-points (does not change lab_sea)
1095      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1096        (to force the user to pick a time step since there is not "safe" way
1097        of choosing it)
1098      - add principal stress diagnostics
1099      - rearrange fields for evp a little to avoid having to call a: too many
1100        exchanges and b: exchanges for stress trensor components which we do
1101        not have.
1102      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1103        of evp, complete rewrite for lsr case (latter is does not yet work
1104        in all cases)
1105    o pkg/kpp: add code to have mixing in shelf ice caverns
1106      - add myThid to all kpp routines (long overdue)
1107    
1108    checkpoint59
1109    o pkg/exf:
1110      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1111        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1112      - move exf header files from lower_case.h to UPPER_CASE.h ;
1113        add missing cvs Header & Name
1114      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1115      - add namelist param. selectStressGridPosition, exf_monFreq
1116      - retire many _CLIM routines, and remove data.exf_clim
1117        + params moved to data.exf
1118        + climsst, climsss now handled by exf_set_gen, i.e.
1119          climss?period=0 refers to constant field,
1120          climss?period=-12 to monthly forcing
1121      - split up namelists in data.exf
1122    o pkg/seaice:
1123      - remove seaice_exch and seaice_exch_uv
1124      - remove superfluous exchange of theta
1125      - add myThid to seaice_budget_ocean/ice
1126      - add new interface for atmospheric wind forcing (C-grid only)
1127        + new routine
1128        + two new field (taux, tauy for stress over ice)
1129        + removed one global field (DAIRN) for C-grid case only
1130    o pkg/thsise
1131      - 2nd set of modifs for thsice adjoint in conjunction with exf
1132    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1133    
1134    checkpoint58y_post
1135    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1136      vertical diffusivity, similar to that in MOM4; turned on using
1137      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1138      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1139    o Added capability for 3D specification of background vertical diffusion
1140      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1141      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1142      "data" file that contains the 3D vertical diffusivity coefficients.
1143    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1144      - add code within pkg thsice to advect & diffuse sea-ice fields
1145      similar to (and will replace) what has been added in  seaice_advdiff.F,
1146      but: - conserving Mass, Heat & Salt.
1147           - better when using non-linear advection scheme (not yet fully tested)
1148           - can also be used in atmospheric set-up (for now, only the diffusion).
1149    
1150    checkpoint58x_post
1151    o IO option for global-file compact format:
1152      - add options when generating topology (utils/exch2/matlab-topology-generator)
1153      - add I/O capability (pkg/mdsio).
1154      - adapt utils/matlab/rdmds.m to read this format.
1155      for now long-line format not yet supported by pkg/mdsio (& exch2).
1156    o shelfice: add a few diagnostics
1157    
1158    checkpoint58w_post
1159    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1160      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1161      (and replace horiVertRatio in NH code).
1162      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1163                         and tutorial_plume_on_slope (sensitive to truncation)
1164    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1165      directly to drive seaice model (C-grid only)
1166    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1167     - reintroduce computation of wind from stress,
1168     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1169       mass points to avoid tau = 0
1170     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1171    o rdmnc.m: make it work with "global" files created with gluemnc
1172    o rdmnc.m : some improvements in dealing with singleton dimension
1173      (tested on all testreport mnc output files).
1174    o genmake2: disable pkg/profiles if netcdf test fails.
1175    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1176    o move call to cal_readparms up to make calendar parameters/variable available
1177      to all packages
1178    
1179    checkpoint58v_post
1180    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1181      useDynP_inEos_Zc tested.
1182    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1183    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1184      and portions thereof.  See read_cs.txt for description and examples.
1185    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1186      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1187      following the great-circle arc between those 2 points.
1188    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1189      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1190    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1191     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1192     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1193     - still needs work (not working with some options ; efficiency to improve)
1194       and serious testing.
1195     - use this scheme for temperature & salinity in 2 advection test exp.:
1196       advect_xy & advect_xz, respectively.
1197    
1198    checkpoint58u_post
1199    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1200    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1201    o testreport: add option "-skipdir" to skip some test.
1202    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1203      momentum calculation.
1204    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1205    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1206      remove checkpoint.F and the_correction_step.F (no longer used);
1207      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1208    o add option (linFSConserveTr) to correct for tracer source/sink due to
1209      Linear Free surface
1210    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1211    o pkg/thsice: fix reading mnc-pickups
1212    
1213    checkpoint58t_post
1214    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1215    o pkg/mdsio:
1216     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1217       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1218       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1219     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1220     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1221       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1222     - new S/R (to replace MDSWRITEMETA), which allows to write more
1223       informations (variable names, time ...) to meta files.
1224     - modify rdmds.m to give back the meta file content.
1225    o pkg/diagnostics: change vertical interpolation to be safer, and more
1226       flexible (define p-levels to interpolate to in data.diagnostics);
1227      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1228       diagnostic pointer.
1229    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1230    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1231    o fix multi-category seaice:
1232     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1233       SEAICE_MULTICATEGORY
1234     - fix short wave heat flux
1235    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1236       and allow to use EVP solver. Change forward lab_sea: test both EVP
1237       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1238    o Initial check-in of lab_sea adjoint
1239      (very similar to natl_box_adjoint/code_seaice)
1240      * used C-grid and EVP solver
1241      * used KPP, GM/Redi
1242      * uses inAdExact=.TRUE.
1243      * gradient checks fail for both ADM and TLM
1244        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1245        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1246        issue is related to forward mismatch between g77 an ifort
1247    o pkg/seaice: overhaul of thermodynamics
1248     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1249     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1250     - move a few global fields out of SEAICE.h into seaice_growth.F and
1251       make them 2D (FICE/QNETO/ ...)
1252     - remove FO (it is the same as QNETO)
1253     - introduce a few local fields to avoid modifying external fields such
1254       as atemp, etc.
1255    
1256    checkpoint58s_post
1257    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1258      changed exf_set_gen.F so that
1259        genperiod=0 means input file is one time-constant field and
1260        genperiod=-12 means input file contains 12 monthly means
1261    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1262      this affects truncation error ; generate new output file for exp. which
1263      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1264        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1265        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1266        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1267        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1268        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1269    o start implementation of deep-atmosphere and anelastic formulation
1270    o verification: remove 2nd copy of input files and use script "prepare_run"
1271      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1272    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1273    o profiles: fix for multithreaded case
1274    
1275    o diagnostics: rename few diags:
1276      s/'PRESSURE'/'RCENTER '/g
1277      s/'TICE    '/'oceFreez'/g
1278      s/'TAUX    '/'oceTAUX '/g
1279      s/'TAUY    '/'oceTAUY '/g
1280      s/'SWFLUX  '/'oceQsw  '/g
1281      s/DIFx/DFxE/g
1282      s/DIFy/DFyE/g
1283      and add few ocean-forcing diagnostics:
1284      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1285    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1286      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1287      as actual snow thickness.  It now refers everywhere to effective snow
1288      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1289    
1290    checkpoint58r_post
1291    o modifications to pkg/seaice/growth.F, which change results of
1292      lab_sea experiment: fixes pertain to melting snow over open water, to
1293      masking EVAP under sea ice, and to using the correct AREA variable for
1294      computations of EVAP, PRECIP, HSNOW, and GHEFF
1295    o add ability to read bathy, salt, and theta using MNC (off by def)
1296    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1297      both are turned off by default and do no change any results
1298    o seaice advection with pkg/thsice: a step toward the use of non-linear
1299      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1300    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1301      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1302      in natl_box (affects results @ truncation level: update output.txt)
1303    o multi-threading and IO:
1304      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1305      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1306        (needed to work with SingleCpuIO): tested in all verif. exp.
1307    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1308      affects the results (but none of the verification test uses this scheme).
1309    o Adding some pkg/diagnostics capability to pkg/seaice
1310      (will certainly be subject to changes)
1311    o ctrl: adding new control variables:
1312      lwflux, lwdown, evap, snowprecip, apressure, runoff
1313    
1314    checkpoint58q_post
1315    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1316      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1317      high_res_cube configuration by 4% on Columbia.
1318    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1319      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1320      dynamical allocation (seems to work in multi-threaded).
1321    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1322      single CPU io) so that TAF does not have to see EESUPPORT.h
1323    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1324    
1325    checkpoint58p_post
1326    o obcs: stop if obcs is used with useCDscheme = .true.
1327    o shelfice:
1328     - fix a sign error so that no slip at shelfice interface works
1329     - remove stop for combination non-hydrostatic code and shelfice. That does
1330       not mean, that the results are correct, but at least they are numerically
1331       stable
1332    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1333    o added adjoint exch routined for all exch*3d* routines
1334      and updated flow directives
1335    
1336    checkpoint58o_post
1337    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1338      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1339    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1340      and clean-up reading/writing of pickup files.
1341    o fix local version of read/write pickup (NH part) in rotating_tank/code
1342    o simplify EXCH interface:
1343     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1344     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1345    o added the regrid package
1346    o shelfice:
1347     - add a simple boundary layer scheme to reduce noise
1348     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1349    
1350    checkpoint58n_post
1351    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1352       local variable (not in common block).
1353    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1354      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1355      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1356        to work with SingleCpuIO.
1357    o add "_d 0" to real constant of pkg/cfc subroutines ;
1358       update exp. cfc_exemple & tutorial_cfc_offline output files.
1359    o multi-threading and IO:
1360      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1361        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1362      - barrier before and after reading.
1363      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1364      - avoid using MDS_WRITELOCAL for LAND pkg output.
1365      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1366        common-block variables ; Allows multi-threading with master-thread IO.
1367    o change default MAX_NO_THREADS from 32 to 4 ;
1368      and stop cleanly when MAX_NO_THREADS is too small.
1369    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1370    
1371    checkpoint58m_post
1372    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1373       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1374    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1375       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1376       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1377    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1378        add MITgcm_tutorials (= code + all the tutorials)
1379    o ecco, option to compute cost for total ssh (mean+anom)
1380    o consistent with addition of ptracer and ssh in pkg/profiles
1381    o profiles: adding ptracer and ssh
1382    o testreport: change multi-test output-file name
1383      (from output.txt.{name} to output.{name}.txt)
1384    o profiles: now ok for mutli-tiles case
1385    o seaice: add 4 parameters for different advection schemes for area,
1386      (effective) seaice thickness, enthalphy, and snow height. Their default
1387      is the standard parameter SEAICEadvScheme
1388    o calc_gw:
1389     - add cosFacU in zonal viscous flux (harmonic.visc.).
1390     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1391       of tutorial_plume_on_slope.
1392    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1393    o calc_gw: true flux-form, account for horizontal grid spacing.
1394      update rotating_tank results, but not plume_on_slope (affected at
1395      truncation level, 11 digits).
1396    
1397    checkpoint58l_post
1398    o calc_gw:
1399     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1400     - remove side-drag for now (need to fix it); update plume_on_slope results.
1401     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1402    o commit code to make SST/SSS weights spatially variable
1403      (based on either variable in-situ or variable initial T/S weights)
1404    o pkg/ecco:
1405      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1406        now based on horizontally varying weights wthetaLev, wsaltLev
1407      * cost_averagesflags now returns year indices in addition to day, month
1408      * sflux balance is performed on annual basis
1409        (sflxumm, sfluxmm2, bal_sfluxmm)
1410      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1411        including separate counting and multipliers
1412    o pkg/rbcs
1413      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1414    
1415    checkpoint58k_post
1416    o testreport:
1417     - always build in dir. "build" (if not there, mkdir build instead of building
1418       & running in input)
1419     - run in dir run (if it exists), in build otherwise.
1420     - call prepare_run (if input/prepare_run exists)
1421     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1422    o pkg/exf modifications to interpolation and rotation routines for more
1423       reasonable treatment of North Pole singularity: for tracers North Pole
1424       value is set to northernmost zonal-mean value, for zonal velocity it is
1425       set to zero, and for meridional velocity it is set to northernmost value.
1426    o pkg/exf/exf_check_range.F
1427     - add tile index to diagnostics and move stop statement to the very
1428       end of the routine.
1429    o pkg/diagnostics: (diagnostics_main_init.F)
1430      define title of isomorphic variables according to the current config.
1431    o pkg/thsice with pkg/seaice dynamics:
1432    - fix domain of computation (interior only, required for exf) and do exchanges
1433    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1434    o towards a standard way of dealing with multi-threading in MONITOR
1435      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1436    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1437       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1438    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1439    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1440    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1441       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1442    o tracer advection:
1443     - clean-up and simplify calc_common_factors.F
1444     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1445       advection subroutine (but still not used within DST advection S/R)
1446    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1447    
1448    checkpoint58j_post
1449    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1450      from file (collects calls previously in FORWARD_STEP)
1451    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1452    o adjoint store dir. adjusted accordingly
1453    o genmake2
1454      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1455    
1456    checkpoint58i_post
1457    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1458      on wind stress (SEAICEstressFactor defaults to 1.)
1459    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1460      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1461    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1462      on CS-grid: no longer loosing mass.
1463    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1464    o pkg/ggl90: fix sloppy output and fix a bug
1465    o pkg/seaice: added SEAICEuseEVPpickup parameter
1466      - Set to false in order to start EVP solver with
1467        non-EVP pickup files when using SEAICEuseEVP
1468      - fix sign error in diffusion in seaice_calc_rhs
1469    
1470    checkpoint58h_post
1471    * Modifications for bottom topography control
1472      o replace hFacC by _hFacC at various places
1473      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1474      o add non-self-adjoint cg2d_nsa
1475      o update autodiff support routines
1476      o re-initialise hfac after ctrl_depth_ini
1477      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1478    * Adding verification for 5x5 box (4-layer) bottom topography control
1479    
1480    checkpoint58g_post
1481    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1482       used for mean seasonal cycle, mean diurnal cycle); add an example
1483       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1484    o pkg/ggl90:
1485      - add parameter (minimum surface kinetic energy)
1486      - fix bug (avoiding division by zero)
1487    o couple pkg/thsice to pkg/seaice:
1488      - modify advection in seaice to accomodate new scalar fields to be advected
1489      - only muliDimAdection scheme work with seaice/thsice
1490      - mapping of thsice-variables to seaice-variables, back and forth
1491      - does not break the verification experiments, but does not give the
1492        desired results either
1493    o pkg/seaice
1494      - make (default) second order advection a bit less confusing?
1495    
1496    checkpoint58f_post
1497    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1498      to pkg/seaice):
1499      - new routines thsice_map_exf and thsice_get_exf provide the interface
1500      - add an additional formal parameter to thsice_solve4temp
1501    o pkg/exf:
1502      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1503      - correct Stefan-Boltzmann constant
1504      - new parameter for longwave surface emittance
1505      - separate some stuff from exf_bulkformulae into new routines  
1506        exf_radiation, exf_wind
1507      - add new parameters and constants: longwave emissivity for ocean, ice
1508        and snow, evaporation parameters over ice
1509      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1510        either wind from stress or stress from wind
1511    o pkg/thSIce:
1512    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1513    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1514       and THSICE_CALC_THICKN
1515    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1516    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1517      to make debugging easier.
1518    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1519    o pkg/bulk_force:
1520      - clean-up comments and parameters ;
1521      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1522    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1523      generate new output for test-experiment: aim.5l_cs.thSI
1524    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1525      testreport accordingly
1526    
1527    checkpoint58e_post
1528    o SEAICE_CGRID adjoint done
1529    o R_STAR adjoint implemented.
1530      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1531      * need to sort out init. of h0facc, etc.
1532    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1533      to be able to use it in pure forward.
1534    
1535    checkpoint58d_post
1536    o upgrade simple test-experiment to tutorial example:
1537     step.1: duplicate the experiment and (step.2) will remove the old copy.
1538      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1539      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1540      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1541      tutorial_global_oce_biogeo    <- copy of dic_example
1542      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1543      tutorial_plume_on_slope       <- copy of plume_on_slope
1544      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1545      tutorial_global_oce_optim     <- empty for now (David ?)
1546      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1547     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1548    o correct a sign problem in cost_scat.F
1549    o obcs and ptracers: fix boundary conditions for advections schemes
1550      with larger stencil
1551    o thsice adjoint: start
1552    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1553      completeness
1554    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1555      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1556    o ptracers adjoint:
1557      * avoid extensive recomputatations
1558      * fix missing re-init. of gptr (missed by TAF)
1559    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1560      me to turn off the excessive output to STDOUT that this package produces
1561    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1562      and add those terms in Vector-Invariant formulation.
1563    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1564      if the control period (xx_hfluxperiod etc) is 0
1565    o in profiles pkg, clean routines and fix details
1566    o in ecco pkg, reading ssh data:
1567      fix problem in case the model does not start at iter0=0
1568    o fix mnc-pickup/restart for ptracers
1569    o new package prifiles:
1570      code to compute profile-based cost by Gael Forget
1571      (modifs in ecco, ctrl, autodiff)
1572    o Benign bug fix in initialization (spotted by M. Mazloff) of
1573      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1574    
1575    checkpoint58c_post
1576    o adjoint: finish NLFS adjoint and provide reference output in
1577      verification/global_ocean.90x40x15/results_ad_nlfs
1578    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1579      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1580      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1581      with SEAICE_CGRID defined.
1582    o move calendarDumps from "data" to "data.cal" and clean-up the code
1583      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1584    o add useEXF & useCAL flags (for now, set in hard-coded way)
1585    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1586      (were missing in NH mode, and wrong in quasihydrostatic mode).
1587      waiting for Chris updated version of calc_gw to add those CALLs.
1588    o fix bug in quasihydrostatic S/R ;
1589      add a test for this option: global_ocean.90x40x15.qshyd
1590    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1591      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1592    o add on/off flag useOffLine for package OFFLINE
1593    o seaice:
1594      - modify advection so that it works also on the C-grid
1595      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1596        problem in multi-tile runs with C-grid
1597      - add flags for clipping ice velocities and/or masking solver forcing
1598      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1599        C-grid solver
1600      - added a few comments to seaice_diffusion.F
1601      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1602        are now exclusive)
1603      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1604        required re-ordering the code a little:
1605       + make DAIRN global variable (defined in SEAICE)
1606       + move computation of the viscosities eta and zeta into a new separate
1607         routine (because I need to recompute them in seaice_ocean_stress.F)
1608    
1609    checkpoint58b_post
1610    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1611      update output.txt of exp. aim.5l_cs.thSI
1612    o various mnc cleanups and improvements:
1613      + shrink lookup tables by factor of ~4
1614      + better error reporting when running out of lookup space
1615      + able to handle longer path/file names (up to 500 chars)
1616    o adjoint:
1617      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1618      - TBD: "hidden" mom_vecinv recomp. in dynamics
1619    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1620     (allow to differentiate between forcing components using new integer flags:
1621      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1622     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1623    o ecco
1624      - enable trend removal from SSH anomaly obs.
1625    o adjoint
1626      - a fix for PmEpR when #undef EXACT_CONSERV
1627      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1628      - try to fix "hidden" recomp. in forward_step for NLFS
1629        (NLFS seems broken sometimes after I checked it in)
1630    o seaice:
1631     - add c-grid version of the dynamic solver:
1632       + three new routines that are the c-grid substitute lsr, dynsolver
1633         and ostres
1634       + put a few fields that were local to dynsolver into global common
1635         blocks, so that I can move the computation of stresses etc into
1636         seaice_lsr (saves coding but may break the adjoint).
1637     - replace more hardwired parameters by runtime parameters
1638     - add ice masks that mask the rhs of the implicit solvers where there
1639       is no ice (commented out in seaice_dynsolver, because i am not sure
1640       if this works properly), eventually this should replace the clipping
1641       of ice velocities in seaice_dynsolver to +/-40cm/s.
1642    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1643      include it only where its needed
1644    o move balancing of fluxes before the call of external_forcing_surf
1645    o seaice:
1646      - correct units of turning angles (now they are really in degrees)
1647      - move computation of GWATX/Y out of main routine into dynsolver
1648      - initialize GWATX/Y in seaice_init
1649    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1650      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1651    o seaice: add runtime flags for turning angles (default to zero)
1652    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1653      and trend from exf forcing and ctrl control adjustments
1654    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1655      (since checkpoint57x_post)
1656    o change the default rotation period to 86164.s = the Earth rotation
1657    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1658      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1659    o seaice advection: add code for choosing between the default (2nd order
1660      central differences) and multiDim advection schemes provided by
1661      pkg/generic_advdiff
1662    o seaice:
1663      - removed all references to SEAICE_GRID.h fields from
1664        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1665        (cubed-sphere configuration will change a little)
1666      - grid computations in seaice_init are obsolete now.
1667      - cleaned up code a little so that is easier to read (hopefully).
1668      - added new (better?) discretizations of default advection and diffusion
1669        (turn on with SEAICEuseFluxForm)
1670      - replace 1 in 3d global fields by kSurface in growth.F
1671      
1672    checkpoint58a_post
1673    o seaice:
1674      - bug fix in advect.F
1675    o shelfice:
1676      - separate shelfice load anomaly from pload (breaks with time
1677        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1678        Its default is 0., but it may be computed more cleverly from (unknown)
1679        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1680        done offline. A good approximation of the pressure load anomaly is
1681        necessary to avoid large initial adjustment processes underneath
1682        deep-reaching shelfice.
1683      - small fix in ISOMIP shelfice_thermodynamics
1684      - add more sophisticated thermodynamics of Hellmer (1989), this is
1685        now the default
1686      - give a few constants more intuitive names
1687    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1688      if bulk formulae are used in long integration (especially EmPmR). Turn
1689      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1690      if balancePrintMean, the imbalance that is substracted is printed to
1691      STDOUT.
1692    o fix bug (typo) in obcs_apply_eta.F
1693    o add a new package shelfice which enables us to model the circulation
1694      underneath shelf-ice with draughts of hundreds of meters.
1695     - works
1696     - to do: + include improved thermodynamics
1697              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1698                instead of new field kTopC
1699              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1700                instead of new field R_shelfIce and new code in ini_depth.F
1701                and ini_mask_etc.F?
1702              + adjust vertical mixing schemes?
1703    o seaice pkg:
1704     - add a cpp-flag to include a simple formula for a salinity dependent
1705       freezing point of sea water at the surface
1706     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1707       meridional stresses are now different (and hopefully correct)
1708    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1709       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1710       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1711    o pkg/diagnostics: add options and parameters for regional-statistics
1712       diagnostics ; define regions by reading a region-mask from a file
1713       (might add other options later)
1714    o pkg/bulk_force:
1715     - add option and parameters to use AIM surface-flux formulae.
1716     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1717       others forcing fields (defined in PARM05, parameter file "data") are loaded
1718       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1719     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1720     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1721     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1722       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1723     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1724    
1725    checkpoint58
1726    o add "--embed-source" option to genmake2 which, when the supporting
1727      tools can be compiled (as determined by genmake2) will turn on the
1728      embed_files package which then embeds the entire MITgcm source code
1729      (*.[fFhc] + Makefile) used for the build within the executable
1730      - requested by CNH but off by default
1731      - adds a paltry <9MB to the mitgcmuv executable in most cases
1732      - only writes the output when useEMBEDSRC in eedata is true
1733    o clean up 3-dim. relaxation codes:
1734      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1735      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1736      * Thanks to Tom Haine for testing!
1737    
1738    checkpoint57z_post
1739    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1740      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1741    o fix the pickup behavior for obcs in combination with ptracers
1742    o fix a bug in ptracers_external_fields_load
1743    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1744      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1745    o transfered surface NH pressure to eta field (if exactConserv).
1746    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1747         and update lab_sea output.txt file.
1748    o completing 3-dim. relaxation code: additional term
1749         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1750      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1751      * At compile time, in "EXF_OPTIONS.h" set
1752          #define  ALLOW_CLIMTEMP_RELAXATION
1753          #define  ALLOW_CLIMSALT_RELAXATION
1754      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1755          tauThetaClimRelax3Dim = 15552000.0,
1756          tauSaltClimRelax3Dim  = 15552000.0,
1757      * 3 cases:
1758          1) Use a constant-in-time 3-dim. field
1759          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1760          3) Real-time relax. to time-evolving prescribed field
1761    o Adding Laplacian-type smoothness constraint on
1762      initial and boundary (forcing) controls (ic, bc)
1763      * enable at compile-time via
1764        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1765      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1766      * Absolute scale somewhat unclear so far
1767      * no area weighting was included since no other cost term does so far
1768    
1769    checkpoint57y_post
1770    First step for a NLFS adjoint
1771    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1772    o new init. routines for calc_r_star, calc_surf_dr
1773    o still need to deal with ini_masks_etc
1774    o testreport seemed happy
1775    checkpoint57y_pre
1776    
1777    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1778    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1779    o add new offset feature to offline pkg (plus minor cleanup)
1780    o cfc fixes for final year of integration
1781    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1782      be in GCHEM_OPTIONS).
1783    
1784    checkpoint57x_post
1785    o fix testreport Pb in multiple test experiment.
1786    o cleanup our namelist syntax in verification:
1787      - make it more F95 standards compliant (some work still needed)
1788      - allows the vast majority of our tests to work with gfortran
1789    o Non-Hydrostatic:
1790     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1791     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1792    o Allow to apply AB on T,S rather than on AB(gT,gS):
1793     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1794     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1795       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1796     - need a "clever" read_pickup to restart from the other AB formulation
1797    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1798    o remove some unused variables (reduces number of compiler warnings)
1799    o adjoint
1800      * Disable useVariableViscosity for adjoint for time being
1801        (there are a number of extensive recomputations)
1802      * Initialize certain variables needed for adjoint
1803    
1804    checkpoint57w_post
1805    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1806                 fix the singleCpuIO RS version of MDSWRITEFIELD
1807       and add a WARNING if using globalFiles=T with multi-processors.
1808    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1809      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1810    o tracer advection scheme:
1811      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1812       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1813       was not very convenient).
1814      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1815       (further tests needed for the implicit DST & Flux-Limiter schemes).
1816    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1817      and sRef for convenience, handy, when you want to initialize
1818      ptracers in a large domain with a constant non-zero value. Also,
1819      untangle ptracers_init.F a little.
1820    
1821    checkpoint57v_post
1822    o change dome exp. to use variable viscosity in side-drag terms.
1823    o remove all the files from the cfc_offline test since they are now
1824      incorporated into tutorial_cfc_offline which has been producing
1825      identical results for a few days of testing
1826    o add new parameter: sideDragFactor to enable half-slip-side BC
1827      and change side-drag S/R to use viscosity from mom_calc_visc
1828      (can switch back by setting sideDragFactor=0.); affects results at
1829      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1830       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1831    o vorticity & strain are now computed without masking, to account for
1832      no-slip-side BC in variable viscosity calculation ; mask is applied
1833      anyway later on, before computing advection/coriolis terms.
1834    o modify exp4 to test new obcs support for reading from external files
1835      and for passive tracers
1836    o fix behavior of ptracers_monitor when monitor output is written to a
1837      netcdf-file; still not independent of monitor.F (writes in the same
1838      file).
1839    o change default value of tRef (put a uniform, meaningful value for ocean
1840      & atmos) and initialize sRef (was missing, as Martin mentioned).
1841    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1842      to be proportional to enstrophy dissipation length.  Thus,
1843       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1844      This is now consistent with Smagorinsky and with the manual.
1845    
1846    checkpoint57u_post
1847    o OBCS and PTRACERS: add open boundary support for passive tracers
1848      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1849        OB-values from file; this is not different from the way theta and salinity
1850        are treated
1851      - however, Orlanski-radiation conditions are not supported, and the model
1852        will stop if you use pTracers and Orlanski at the same time.
1853      - beefed up the rountine obcs_external_fields_load: now only those open
1854        boundary values are overwritten with values from files for which there
1855        are really files, otherwise the OB-fields remain untouched. This makes
1856        it possible to use different OBs at different ends of the domain (as
1857        with EXF)
1858    o reduce number of exch calls in shap_filt (s2).
1859    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1860      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1861    
1862    checkpoint57t_post
1863    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1864    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1865      same truncation, independent of the face number: affects affects several
1866      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1867    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1868      note that biharmonic viscosity + no-slip was not tested in any experiment.
1869    o fix bug in non-linear free-surf side-drag ; generate new output for
1870      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1871    o make mnc honor the writeBinaryPrec flag for most kinds of output
1872    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1873    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1874      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1875    o add brackets in multi-terms sum to get same truncation, independent of
1876      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1877      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1878    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1879      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1880      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1881      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1882      Suggested values of viscosity parameters found in mom_calc_visc.
1883      Many new viscosity diagnostics available.
1884    
1885    checkpoint57s_post
1886    o Add clearing-house for viscosity calculations, mom_calc_visc and
1887      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1888      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1889      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1890      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1891      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1892      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1893      ViscAhStrain and viscAhTension are now retired.
1894    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1895    o In response to JMC's bug report, genmake2 now ignores any soft-links
1896      that it finds in the *current* directory when searching for files.
1897      Soft-links found in any other source directories will still work as
1898      they did before.
1899    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1900      a C routine to unlimit the stack size
1901    o mnc-ify pkg/aim snapshot vars
1902    o mnc-ify pkg/land as requested by Daniel
1903    o various changes to mnc including:
1904      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1905      - output can now be grouped so that all files within a group
1906          change the ITER portion of their names in lock-step together
1907      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1908          and works with both EXCH1 and EXCH2 (but needs more testing)
1909      - writing works for all verification test cases w/ g77 on Linux
1910    
1911    checkpoint57r_post
1912    o make MNC variable initialization happen earlier
1913    o add diagnostics for (almost) each term of the momentum Eq.
1914    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1915    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1916    o remove MINIMAL_TAVE_OUTPUT option ;
1917      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1918    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1919      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1920    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1921    o add time-dependent SST, SSS control
1922    o cost terms in ecco/ modularized (new cost_generic.F)
1923    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1924    o new infrastructure for seaice model vs. obs misfits in seaice/
1925      * driver from the_main_loop.F is seaice_cost_driver.F
1926      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1927      * gradient check in Exp. 6a of natl_box_adjoint/
1928    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1929      (see README file)
1930    
1931    checkpoint57q_post
1932  o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)  o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1933  o fix annoying months-old bug in mnc/mdsio output for seaice pkg  o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1934    - bug was reported by Jean-Michel and Ian Fenty    - bug was reported by Jean-Michel and Ian Fenty
# Line 16  o Changed some tests for adjoint: Line 1941  o Changed some tests for adjoint:
1941    * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT    * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1942    * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT    * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1943    * global_ocean.90x40x15/ back to default 3-level checkpointing    * global_ocean.90x40x15/ back to default 3-level checkpointing
1944    o Modifications to enable scripted COMMON to MODULE conversion
1945      * verification/OpenAD/code/ has necessary scripts and description;
1946      * converts, compiles and runs successfully;
1947    
1948  checkpoint57p_post  checkpoint57p_post
1949  o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F  o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
# Line 637  o add two new packages Line 2565  o add two new packages
2565    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2566    - these scheme operate in a similar manner as KPP (without ghat, of    - these scheme operate in a similar manner as KPP (without ghat, of
2567      course), however there is only one diffusivity that is used for both      course), however there is only one diffusivity that is used for both
2568      temperature and salinity (and passive tracers)ç      temperature and salinity (and passive tracers)
2569  o add offline package  o add offline package
2570  o add "verification/dic_example" which contains a dic-gchem-ptracer setup  o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2571    provided by Stephanie Dutkiewicz    provided by Stephanie Dutkiewicz

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