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revision 1.192 by dimitri, Wed Oct 22 16:35:47 2003 UTC revision 1.1094 by jmc, Wed May 6 03:02:12 2009 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  untagged  o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
8      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
9        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
10        when using exch2. Add S/R to map global io-buffer to global model array.
11      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
12    
13    checkpoint61m
14    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
15      and add 3 other S/R for other types (R4,R8,RS).
16      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
17    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
18     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
19     - reduce number of macro definitions (keep only those which are used);
20       can always call directly the corrresponding S/R if needed.
21     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
22       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
23     Fixed wrong type of arg in:
24       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
25       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
26     To fix: global_sum of var in common block is wrong (multi-threaded) in:
27       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
28     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
29    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
30      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
31    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
32    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
33      edges are closed (zero depth); might happen with "blank tiles";
34      for now, disabled if using OBCS.
35    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
36      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
37    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
38      to reduce length of 1.D array print in STDOUT.
39    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
40      + use 48 tiles (16x8): this will allow to test "blank tiles".
41    o start to test MPI + multi-threaded (change testreport to skip tests
42      where number of tiles do not match).
43    o genmake2: add option "-omp" to turn on Open-MP ;
44      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
45    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
46      and keep the original tile numbering. Note: compatible with old
47      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
48    
49    checkpoint61l
50    o Overlaps had been forgotten in calculating ijk keys : fixed
51    o fix cyrus makedepend for gcc 4.4
52    o experiment fizhi-cs-aqualev20:
53      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
54      and generate new output. Note: new output is much closer to the old
55      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
56      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
57    o pkg/fizhi:
58     - change to avoid indices going deliberately over array-bounds
59     - remove unnecessary MPI stuff
60     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
61     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
62       does not go over array-bounds and therefore returns reliable output.
63     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
64       this S/R has 4 output arguments, which are used inside "get_alarm";
65       when it is called with the same variable "ndum" in place of several
66       output arguments, this produces weird side effect inside "get_alarm"
67      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
68       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
69       address) and produces error.
70    o tools/gemake2: (March 27-29 2009)
71      with option "-mpi": link *_mpi files from "MODS" dir (this is what
72      testreport does).
73    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
74    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
75       update lab_sea.lsr & lab_sea.salt_plume results
76    o pkg/seaice:
77      Major overhaul of the LSOR solver: change discretization from original
78      finite differences to finite volume. The old routine is still in the
79      file seaice_lsr.F and can be turned on with the CPP-flag
80      SEAICE_OLD_AND_BAD_DISCRETIZATION
81      Along with this change, the discretization of the strain rates is changed.
82      The same flag turns on the old discretization in seaice_calc_strainrates.F
83      All verification experiments with seaice are affected (except for
84      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
85      results by setting the above flag.
86      Further changes involve changes in defaults:
87      - ALLOW_FLOODING is defined and turned on by default
88      - SEAICEadvSnow = .true. is now the default
89      - SEAICEadvSalt = .true. is now the default
90      - SEAICEadvAge  = .true. is now the default
91      - SEAICE_clipVelocities  = .false. is now the default
92                                         (as per J. Zhang's recommendation)
93      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
94        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
95      - seaice_growth: replace computation of UG by a simple copy from wspeed
96    
97    checkpoint61k
98    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
99      seaice_lsr: fixed a few metric terms,
100                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
101                  add more debugging diagnostics
102      seaice_evp: removed superfluous many metric terms of FV discretization
103                  of stress divergence
104                  affects lab_sea, lab_sea.hb87
105      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
106                  of stress divergence for non-evp solver
107                  (this part is not tested anywhere)
108      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
109                  they were effectively only half slip
110                  affects lab_sea.hb87
111      updated all relevant verification experiments (except lab_sea//output_adm.txt
112        which was left over, but fails at level 7 & 6)
113    
114    checkpoint61j
115    o pkg/seaice: turn a few hard wired parameters into run time parameters
116    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
117      time in seconds as promised by the usints in seaice_monitor and exf_monitor
118    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
119      that are not cubed-sphere grids
120    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
121    o pkg/ctrl:
122      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
123    o non-hydrostatic (calc_gw.F):
124      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
125      update output of exp. global_ocean.cs32x15.viscA4
126    o remove backward compatibility for thetaMin,phiMin
127      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
128    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
129      interpolated wind field not only for curvilineargrid=.true., but also
130      for a rotated grid (rotateGrid=.true.)
131    o pkg/exf: add capability to bypass interpolation for runoff
132      by setting yet another CPP-flag
133    o eesupp/src, B-grid exchange:
134      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
135    o autodiff
136      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
137      allows to switch to single-prec common blocks;
138      corresponding switch occurs in tamc.h, integer isbyte
139      TAF store directivs "byte" and "kind" seem equivalent;
140      Most tamc.h have been updated correspondingly.
141    
142    checkpoint61i
143    o autodiff:
144      fix autodiff_sore/_restore indices for obcs
145      (spotted by I. Hoteit, M. Mazloff)
146    o pkg/autodiff, pkg/ctrl:
147      Add flag to reduce all tapelev I/O to single-prec.
148      In data.ctrl set
149        doSinglePrecTapelev = .TRUE.
150    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
151      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
152    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
153      real fresh water flux (not yet)
154    o pkg/mdsio & rw:
155     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
156     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
157    o pkg/flt:
158     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
159       init_fixed & ini_varia.
160     - clean-up & simplify linear interpolation S/R:
161       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
162     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
163     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
164     - add vert. coordinate & horiz. indices to output files.
165     - change vertical position in initial condition, from index to depth [m].
166     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
167       (easier to get to a curvilinear grid) ; delX,delY no longer used.
168    o pkg/ggl90: a few modifications:
169     - fix bottom boundary condition, and interpolation of KappaE
170       near top and bottom
171     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
172     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
173     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
174    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
175      (maintain temporary backward compatibility, until next checkpoint)
176    
177    checkpoint61h
178    o pkg/diagnostics with "periodic averaging diagnostics":
179      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
180    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
181    o pkg/obcs: fix loop ranges for balancing code
182    o pkg/flt:
183     - improve criteria for finding which tile owns a float.
184     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
185    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
186      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
187      with ocean biogeo)
188    o pkg/flt:
189     - do some cleaning and fix the restart ;
190     - add output.txt in flt_example/results to get this pkg tested.
191    o genmake2: add an EXTENDED_SRC option and flag.
192       for now, cannot be turned on on command line (only through genmake_local)
193    o pkg/mdsio: read/write vector:
194     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
195     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
196       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
197     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
198      (drop to 4 digits matching for grad). But this test does not look very
199      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
200    
201    checkpoint61g
202    o pkg/flt:
203      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
204       + make OPTIONS file more standard.
205      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
206      - fix _BYTESWAPIO CPP-Flag
207      - standard reading of file-parameter "data.flt"
208      - fix argument list of S/R FLT_RESTART
209      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
210    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
211    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
212      a still unfixed compiler/optimization bug
213    
214    checkpoint61f
215    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
216      update results of global_ocean.cs32x15.icedyn test.
217    o move getcon.F from model/src to pkg/fizhi.
218    o pkg/exf: add parameter for extrapolation of temp up to the surface
219       and option to prevent negative evap (in bulk_largeyeager04 only).
220    o Prather Advection scheme: fix tracer conservation for divergent flow
221      (e.g., when using NonLin Free-Surface).
222    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
223    o gmredi (Visbeck-variable-K):
224     - add more parameters to Visbeck-variable-K.
225     - use a 5 points average for dSigmaR in Visbeck-K calculation
226       (more "homogenous": same stencil and same weights as in dSigmaH)
227     - update output of ideal_2D_oce experiment.
228    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
229      (#undef REAL4_IS_SLOW)
230     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
231       coordinate variable
232     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
233       (surface forcing fields), removes some of the functionality
234     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
235     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
236       probably not all: copy _RS surface flux fields to RL field before
237       calling DIAGNOSTICS_FILL
238     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
239       real*4 (CALL EXCH_*_RS) versions.
240     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
241       (generate new output).
242    
243    checkpoint61e
244    o gmredi (Visbeck-variable-K):
245      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
246      - change computation of Visbeck-K where Slope > Smax :        
247        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
248        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
249    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
250      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
251    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
252    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
253      does not become too large (to avoid precision problems in implicit-diffusion
254      solver); update ideal_2D_oce output.
255    o pkg ggl90:
256      - in ggl90_cal.F: compute only one set of visc/diff, used to
257        step forward TKE/T/S/momentum
258      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
259        have Prandlt =1)
260    o gmredi (fm07):
261      - add lower limit on Transition layer thickness + lower limit on 1/lambda
262      - allow to set few more params from data.gmredi
263    o pkg ggl90:
264          - add missing sqrt(2) factor in computation of mixing length
265            scale in ggl90_calc.F
266            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
267    
268    checkpoint61d
269    o adjoint modifs
270      - adapt to new field rhoInSitu
271      - allow to revert from StoreDynVars2D, StoreDynVars3D
272        to individual fields
273        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
274    o store 3-D (in-situ) density in commom block (DYNVARS.h)
275     - save 1 rho computation.
276     - no longer modify T & S inland when using down_slope pkg.
277    o gad_som : allow to switch to SOM advection for T & S without corresponding
278      pickup files (using new S/R: MDS_CHECK4FILE).
279    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
280      (for useSingleCpuIO to work in multi-threaded)
281    o pkg/shelfice:
282     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
283       with SHELFICEtopoFile in data.shelfice
284     - move code for reading ice shelf topography and modifying hFacC into separate
285       subroutines of the shelfice package
286     - separate initialisation of "fixed" and "variable" variables
287     - kTopC is not (yet) replaced by kSurfC, although this is possible
288    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
289    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
290      and rename:
291      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
292      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
293    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
294    
295    checkpoint61c
296    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
297      to add mass source/sink of fluid in the interior (3-D generalisation
298      of oceanic real-fresh water flux).
299    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
300    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
301    o new pkg: down_slope
302      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
303      - presently, modify T & S inland (dwnslp_calc_rho.F).
304        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
305      - implementation for ocean in P-coords not tested.
306      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
307    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
308      (to facilitate conversion of oceanic pkg to p-coordinate).
309    o change FIND_RHO to FIND_RHO_2D :
310      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
311    o new pkg: cheapaml
312    
313    checkpoint61b
314    o exch2:
315      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
316      - no longer depend on the order sequence (N,S,E,W).
317      - 3rd exchange no longer needed (tested with 24 tiles).
318      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
319      - exch_UV_A-grid readily available (but not yet tested).
320      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
321      (both are no longer needed) in exch_uv: no effect in forward run; but
322       get truncation error differences with adjoint exch.
323    o exch2:
324     - change index-bounds storage (moved from target to local tile,
325       more intuitive this way) ; rename/remove some variables.
326     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
327    
328    checkpoint61a
329    o exch2/matlab-topology-generator:
330      fix bug in index bounds for N-S internal exchange (hard to tell if this
331      had any effect on the solution).
332    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
333      is exceeded
334    o testreport: modify syntax of awk, so that it works also with
335      awk, and not only with nawk and gawk
336    
337    checkpoint61
338    o autodiff
339      Change default for TAF usage by removing argument '-nonew_arg'
340      This changes TAF subroutine argument list (ordering of active var.)
341      Omission of this flag leads to incompatibility w.r.t. TAMC
342      To restore TAMC-compatibility, need following modifs:
343      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
344      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
345      Tested TAF version is 1.9.22
346      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
347    
348    checkpoint60
349    --->>> This is the last checkpoint for which generating the adjoint
350    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
351    --->>> by default.
352    --->>> Future checkpoints will ommit this flag by default.
353    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
354    o pkg/grdchk: Add gradient check to etan0 perturbations.
355    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
356    o pkg/autodiff: more flexibility in zeroadj.
357      model/src: modifying do_oceanic_phys.F accordingly.
358    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
359    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
360      special setup of gmredi for which the adjoint is stable
361      enough for parameter optimization.
362    o bridging the gap between eddy stress and GM.
363      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
364          along with a change in CPP option (now ALLOW_EDDYPSI).
365      -> when using GM w/ GM_AdvForm:
366          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
367          is applied either in the tracer Eq. or in momentum Eq.
368          depending on data.gmredi (intro. GM_InMomAsStress).
369      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
370      The key modifications are in model/src/taueddy_external_forcing.F
371      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
372    
373    checkpoint59r
374    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
375      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
376      fix option to read coriolis(@ cell-corner) from files with CS-grid.
377    o pkg/mnc: add some attributes to standard 1D-coordinate variables
378    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
379      mass points, when using mnc for output
380      - add runtime parameter (missing_value, missing_value_int) to override
381        default (which is the value of getcon('UNDEF'))
382    o pkg/mnc: prepare mnc for the actual use of missing values with the
383      diagnostics package: small fix in mnc_cw_readwrite.template and more
384      initialisation of never used fields
385      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
386      versions
387    o pkg/thsice/thsice_ini_vars.F added default initial values so that
388      thermodynamics sea ice solver does not blow up when some initial fields
389      are missing.
390    o move from external_forcing_surf.F to ini_forcing.F
391      the p-coord. hack consisting in using pLoad to set phi0surf ;
392      update output of tutorial_global_oce_in_p (affected @ truncation level).
393    o Freshen up a bit hs94.1x64x5, notably:
394      remove rotationPeriod and tRef=5*0. (adjoint only), and add
395      exactConserv=.TRUE.
396    o pkg/generic_advdiff:
397      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
398      applies to files where Temperature & Salinity 2nd Order moments are used.
399    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
400      this uses a dynamically allocated internal state data structure
401      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
402      and requires a fortran 90 compiler
403    
404    checkpoint59q
405    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
406       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
407    o Refresh tutorial_global_oce_biogeo, notably:
408      - change bathymetry (put back seamounts in ACC, use hFacs)
409      - change EOS (POLY3 --> JMD95Z)
410      - use Bryan-Lewis vertical diffusivity
411      - use multidimensional advection
412      - remove old virtual virtual in dic pkg, now done through ptracer pkg
413      - change a couple of parameters in dic pkg
414    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
415    o pkg/obcs: change default to OBCSfixTopo = .true.,
416      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
417      - replace "debugMode" with "debugLevel .GE. debLevB"
418    o implementation of TAF directives for gchem,cfc,dic
419    o remove "exp5" (replaced by tutorial_deep_convection).
420    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
421      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
422      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
423      --> changes results in exp4, seaice_obcs
424    o tutorial_deep_convection :
425      update the set-up and increase resolution and domain size ; start
426      from pseudo initial conditions = output at t=120mn in order to see
427      something happening when running testreport.
428    o pkg/seaice: add os7mp as an advection scheme
429                  add check for advection schemes
430                  add a flag for restoring T and S underneath sea ice
431    o pkg/my82: add netcdf-support and diagnostics
432    o thsice pkg:
433      - Now hsMax limits snow height by turning it into ice following
434        flooding scheme (and now conserving energy)
435      - Slight rewriting of the formula in thsice_calc_thick.F
436      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
437      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
438    
439    checkpoint59p
440    o gchem / dic / cfc :
441      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
442      - add new parameter files: "data.dic" & "data.cfc" ;
443      - various re-arrangement in initialisation & header file ;
444      - fix tutorial_global_oce_biogeo for multi-threaded test.
445    o pkg/dic: test for "pickup_dic" file when restarting ;
446      if no pickup-file, can restart with a re-initialised pH (same as it did
447      before) providing pickupStrictlyMatch is set to False.
448    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
449      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
450    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
451      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
452    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
453     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
454       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
455    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
456       scheme to use for vorticty-term ;
457     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
458       (with default selectVortScheme, return to original discretisation)
459     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
460    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
461    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
462      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
463      also fix diagnostics VISCAHW & VISCA4W.
464    
465    checkpoint59o
466    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
467    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
468      move a few statemens out the main loop into separate loops
469    o pkg/shelfice:
470      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
471        (kg/m^2/s), does not break tests, because in verification/isomip,
472        rhoConstFresh=rhoConst (by accident)
473      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
474      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
475        new file model/src/seawater.F, so that they are available for all pkgs.
476      - convert potential temperature into in-situ temperature. This changes the
477        isomip tests => update tests
478    o add a flag writePickupAtEnd (default=true) to be able to suppress
479      writing a pickup at the last timestep
480    o tools/mpack-1.6 :
481      - disable automake (not working) and autoconf (not needed).
482      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
483        also cleaner with much less compilation warnings.
484    o pkg/profiles:
485      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
486      (for "less than 32 characters name" compiler requirement)
487    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
488      conditions that have a different sampling frequency than S/T/U/V obcs
489    o pkg/diagnostics (stats-diags):
490      - fix global Min/Max in case 1 processor get only empty tiles
491    o genmake2: replace (4 times)
492         make genmake_tc_1.o >> genmake_warnings 2>&1
493      with
494         COMM="$CC $CFLAGS -c genmake_tc_1.c"
495         echo $COMM >> genmake_warnings
496         $COMM >> genmake_warnings 2>&1
497      to make genmake2 always see the value of CC as specified in the optfile.
498    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
499      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
500      - modify verification advect_cs test to test SOM-advection on CS-grid.
501    o pkg/ctrl:
502      - Rewrite of ctrl_map_ini_ecco.F,
503        introducing a generic routine (ctrl_map_ini_gen.F).
504      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
505    
506    checkpoint59n
507    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
508      number in dedicate array "hdiag":
509      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
510        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
511      - many small changes (integer format) for large number of diagnostics
512      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
513        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
514    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
515      usingSphericalGrid, this allows to define the rotated grid coordinates
516      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
517      geographical coordinates according to the inverse of the rotation defined
518      by the Euler angles, so that Coriolis parameter and online-interpolation by
519      exf works with the geographical coordinates on XC/YC/XG/YG.
520      Naturally, this feature does not work with all packages, so some
521      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
522      profiles), because there the coordinates are assumed to be regular
523      spherical grid coordinates.
524    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
525      - introduce isopycnal diffusion coefficient control.
526    o tools/adjoint_options:
527      - additional control vector components.
528    o pkg/mnc: have mnc create marginally meaning full coordinate variables
529      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
530    o pkg/mypackage:
531      - add example of read/write pickup for state-var ;
532      - add entry points to the main code for state-vars diags & write-pickup.
533    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
534      transitions for useExfYearlyFields
535      - add new subroutine that determines the file to read from for
536        use*YearlyFields = .TRUE. and .FALSE.
537      - add a verification experiment to global_with_exf that tests
538        useExfYearlyFields with USE_EXF_INTERPOLATION defined
539    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
540      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
541      subroutines (which could be generated from a template, because they are
542      almost identical), for now they are included in obcs_prescribe_read.F for
543      simplicity
544    o pkg/exf:
545      - add a little more diagnostic to exf_interp_read (in analogy to
546        mds_read_field, can be turned off with debugLevel < debugLevA=1)
547      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
548        ugly but fast by unrolling short inner loops, inserting a unroll=8
549        directive in routine lagran, and splitting a loop and making do while the
550        outermost loop (the latter requires the intoduction of index arrays)
551    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
552    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
553      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
554    o verification/seaice_obcs: updated for restart test and latest options
555    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
556      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
557      for now this is only available for the C-grid code and also within
558      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
559    
560    checkpoint59m
561    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
562      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
563    o gad_som : fix flux output (& diagnostics) to have same units as other  
564      advection scheme fluxes (was previously multiplied by deltaT).  
565    o added verification/seaice_obcs both to test seaice open boundaries
566      and to provide an example matlab scrpt for generating them
567    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
568    o pkg/salt_plume: clean up salt_plume_frac.F to
569      remove redundancy in PlumeMethod 1 and 4
570    o pkg/kpp: added saltplume diagnostics
571    o pkg/obcs and pkg/seaice:
572      - do not set uice and vice to zero when OB*icefile are unspecified
573      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
574      - moved seaice tracer obcs after call to seaice_growth
575    o pkg/salt_plume: added various options for salt plume depth
576      criterion and for vertical distribution of the salt
577    
578    checkpoint59l
579    o pkg/ptracers: new version of ptracers pickup:
580      read meta file and write only fields which are needed to restart.
581      ( same logic as main pickup file ; also using pickupStrictlyMatch )
582    o pkg/seaice:
583      - add timescale for melting due to warm mixed layer as a means of
584        setting SEAICE_availHeatFrac more conveniently
585      - add a CPP-flag/runtime parameter check for flooding algorithm
586      - reformulated availHeat in seaice_growth.F to be independent of AREA
587    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
588      unit changes
589    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
590    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
591      SX vector computer.
592    o pkg/seaice:
593      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
594        seaice forcing fields can now be read only through pkg/exf
595      - removed some unused halos
596    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
597    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
598      or U/VICE from U/VWIND before computing U/VSTRESS
599    
600    checkpoint59k
601    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
602      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
603    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
604      all experiments pass when compile with un-initialised var. checking option.
605    o added pkg/salt_plume
606    o script to test restart (for now, in MITgcm_contrib/jmc_script)
607    o pkg/seaice: new read/write pickup version.
608      read meta file and write only fields which are needed to restart.
609      ( same logic as main pickup file ; also using pickupStrictlyMatch )
610    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
611    o lab_sea.hb87: modify the domain & update output.hb87.txt :
612      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
613      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
614      process. Fixed here by closing the domain at the Northern boundary.
615    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
616    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
617      a set of consecutive levels in/from a 3-D array.
618    o pkg/ptracers:
619      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
620      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
621    
622    checkpoint59j
623    o in pkgs: dic, obcs, offline, rbcs:
624      standard way to compute coeff. for time interpolation between 2 time reccords
625      which retains full precision (& make results less dependent on compiler).
626      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
627    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
628      packages instead of reading ice cover and wind speed separately
629    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
630     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
631      to allow to compile customized code before the update)
632    o cleaning-up:
633      - fix CPP instruction syntax in pkg/obcs
634      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
635        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
636      - fix some threads issue in IO parts.
637    o pkg/dic:
638      - add tons of "_d 0" (--> much better testreports !)
639       and then update outputs of tutorial_global_oce_biogeo
640    o pkg/mom_fluxform:
641      add a special version of momentum advection intended to conserve momentum
642      next to a bathymetry step or a coastline edge. (default = off = #undef)
643    o new read/write pickup version:
644      - for now, only implemented for main (mdsio) pickup file.
645      - write out only what is needed to restart; merge pickup_nh , pickup_ph
646        and main pickup together.
647      - read meta file; read only what is needed to restart; stop if a field
648        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
649        if it make sense (even if the restart is not perfect).
650      - if no meta file, assume that pickup to read corresponds exactly to
651        a pickup that would currently be written.
652      - read pickup written in the old format (until checkpoint59i) if it
653        recognizes an old meta file (no field-list).
654      - add a meta file in exp. which starts from a pickup: 2 cases:
655        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
656         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
657        b) a meta file describing the content of the associated pickup file
658         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
659    o pkg/mdsio & pkg/rw:
660      - new routine to read a meta file ; new set of routine to read
661        Multiple-fields file (with meta file).
662    o added open boundary conditions capability for seaice
663        HSNOW, HSALT, UICE, and VICE
664    
665    checkpoint59i
666    o adjoint:
667      * fix multiDimAdvection adjoint
668        (partial recomputation problem by TAF for fVerT(:,:,kDown)
669        and comlev1 size definition (maxpass vs. max. number of tracers)
670      * verification/global_ocean.90x45x15 adjoint now tests
671        NLFS and multiDimAdvection using DST3 (=30)
672      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
673    o pkg/kpp: add "_d 0" to real constant (if missing);
674      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
675      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
676    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
677      for internal parameters related to restart process (formerly from PARAMS.h)
678      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
679    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
680      as argument. (only atm2d & obcs write_pickup have not yet been updated)
681    o pkg/monitor:
682      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
683      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
684      - account for deep Atmosphere factor and density factor (anelastic)
685    o added open boundary conditions capability for seaice HEFF and AREA
686    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
687      thermodynamics
688      - requires a little reorganization, which affects the testreport results
689        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
690        so that now the conservative form is tested
691      - add a few comments
692    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
693    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
694    o add new diagnostics to seaice: advective, diffusive fluxes (only for
695      multidim-advection, for scheme 2 they are not filled) and transports,
696      thermodynamic growth rates
697    o change units of EmPmR (inside the code, + within coupling interface)
698      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
699      Affects results @ truncation level (cg2d match) and update output of
700       experiments: lab_sea(6), global_ocean.90x40x15(10),
701      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
702      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
703      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
704      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
705    
706    checkpoint59h
707    o pkg/exf:
708      - improve vectorization by moving if-statement out of loops in
709        exf_mapfields, exf_radiation
710      - exf_bulkformulae.F: introduce 2D fields and vectorize code
711    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
712    o testreport:
713      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
714        monitor & update offline_exf_seaice exp. output.
715      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
716    o pkg/seaice:
717      - bug fix in the evp solver: boundary conditions were affected be
718        masking of zMax/zMin (changes results)
719      - minor bug fix in boundary conditions in seaice_calc_strainrates
720        (changes results for no_slip)
721      - seaice_lsr.F: make interpolation of eta dependent on boundaries
722      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
723      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
724        stress formulation and no-slip boundary conditions
725    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
726      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
727    o pkg/seaice: a first HSALT time stepping equation has been checked in
728    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
729      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
730      without requiring DO-IF statements
731    o pkg/thsice:
732      use continuous power-law function for partition of energy between lateral
733      melting/freezing and thinning/thickening ; old code using step function
734      still available with #undef THSICE_FRACEN_POWERLAW
735      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
736    o testreport: change AD testing : check against results/output_adm.txt
737      using same scripts as for forward test.
738    
739    checkpoint59g
740    o adjoint testing: in preparation for changing testreport:
741      - output format: cost and grad written on separated lines
742      - ad output results in directory "results" (instead of "results_ad")
743    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
744    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
745    o pkg/ecco: allow user defined cost function contributions
746    o testreport:
747      Allow to choose (per experiment) the list of tested output variables
748       and the main variable (used to issue a pass/FAIL ) ;
749      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
750      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
751      Also modify printing of summary:
752       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
753       b) echo the list of tested variables in the individual summary.txt of
754          each experiment.
755    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
756      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
757      (but still depend on the tile decompostion of the domain).
758    o pkg/seaice: change a discretization detail to make the B-grid code
759      "more symmetric". This change is likely to remove all "ridges/leads" that
760      where quasi-aligned with the grid in B-grid solutions. It may also be
761      the solution to the stress coupling issues with the B-grid.
762    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
763      remove .cvsignore from input dir. (since testreport no longer run here).
764    o pkg/thsice:
765     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
766     - fix reshaping of sea-ice just after advection:
767       melt all the ice only if ice-volume is too small.
768     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
769       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
770     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
771    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
772      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
773    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
774      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
775      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
776      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
777      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
778      -> update output.txt
779    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
780     this affects truncation error: -> update output.txt of exp:
781      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
782      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
783    
784    checkpoint59f
785    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
786    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
787      a bounded range (in forward mode)
788    o pkg/ecco, ctrl, autodiff and mom_common:
789     internal parameter controls, completements of implementations
790    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
791    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
792      (not seem any difference in testing results).
793    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
794       at face corners.
795    o pkg/generic_advdiff:
796     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
797      loop range indices for computing vertical advection tendency
798      and do the calculation in the interior only (no overlap) ;
799      for now, only implemented for SOM advection (to save CPU time).
800     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
801    o exch2 adjoint
802      First set of changes:
803      - add exch2 hand-written adjoint templates
804      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
805        This will require cleanup in pkg/autodiff/*.F
806        (changed routines currently kept separate in verif. code/)
807      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
808        that used to hide exch2 or cubed-sphere specific code
809        (commented via 'cph-exch2')
810    o pkg/seaice
811      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
812    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
813       output of global_ocean.cs32x15.thsice .
814    
815    checkpoint59e
816    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
817      for B-grid vector (not yet tested) and C-grid vector (<- only used
818      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
819    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
820      (#ifdef ALLOW_SALT_PLUME)
821    o gather_2d/scatter_2d: removed halo regions
822    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
823      scheme and the corresponding test case (under front_relax dir). For now,
824      only available with Skew-flux form and not yet tested in realistic set-up.
825      adjoint: store directives updated, but gradient checks deteriorated,
826      so maybe GM/Redi adjoint is now broken.
827    o seaice adjoint
828      * add AREA, HEFF, HSNOW as control variable
829        (should not change lab_sea results)
830      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
831    o pkg/seaice:
832      * added computation of saltFlux in seaice_growth;
833        For time being, sea ice salinity is assumed constant
834        contribution of snow flooding to freshening of sea ice is neglected.
835        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
836        defaults to 0.0 in order to maintain backward compatibility.
837        Typical values for SEAICE_salinity are 4 to 10 g/kg.
838      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
839      * added SEAICE_availHeatFrac, which specifies fraction of surface level
840        heat content used to melt or grow ice
841      * commented out cap of HICE: it helps keep ice thinner
842      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
843      * applied OBCS T/S mask to HEFFM sea ice mask
844    
845    checkpoint59d
846    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
847     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
848     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
849    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
850     and change default value of parameter "GM_Small_Number";
851     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
852       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
853       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
854    o pkg/ecco: cost function when applying pkg/smooth to controls
855    o pkg/ctrl: add forcingPrecond run time parameter
856    o pkg/seaice:
857     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
858     - fix bug in metric terms of u-equation in LSR solver (implicit part),
859       changes verification/lab_sea
860     - rearrange implicit part of u-equation in LSR solver to make it easier to
861       read, understand, and debug. This causes changes at the truncation level.
862     - fix (serious) bug in the boundary conditions (sign error in the implicit
863       part) of the LSR solver. Changes all LSR results.
864     - fixed problem with HSNOW initialization to avoid thick snow when AREA
865       is initilized with small values - does not change lab_sea results.
866     - added HsnowFile initialization capability
867    o pkg/smooth: addition to model/src and pkg/ctrl so allow
868     initialization of pkg/smooth and application to control vector
869    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
870    o dependencies: pkg/profiles requires pkg/cal
871    o pkg/profiles:
872     - added option ALLOW_PROFILES_GENERICGRID
873         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
874         that interpolation information (grid points and coefficients) is provided
875         within the netcdf input files.
876         -> sample matlab scripts can be found in MITgcm_contrib/gael
877         that allow you to prepare netcdf input files.
878     - also modified: cleaner include statements, cleaner error print statements,
879       cleaner stops when error, and more tests of the netcdf input files consistency.
880    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
881    o pkg/seaice:
882     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
883       requires a new routine: seaice_diagnostics_fill.F
884     - make sure that seaice does not move if not forced (pressure replacement
885       method, Hibler and Ip, 1995), changes results
886     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
887     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
888       It is turned off by default (=-1.), because it changes the results.
889     - make it possible to read AREA from a file, too.
890    
891    checkpoint59c
892    o add S/R and diagnostics for oceanic mixed-layer depth
893    o move GMRedi call after all vertical mixing schemes (including KPP)
894    o pkg/thsice:
895     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
896      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
897    o pkg/obcs:
898     - bug fix for balance code
899    o pkg/seaice:
900      - allow values of SEAICE_elasticParm > 1
901      - add new parameter SEAICE_evpTauRelax as an alternative
902        to SEAICE_elasticParm
903      - make lsr boundary conditions free slip (by default), changes result
904      - add code for no slip boundary conditions for lsr
905      - set minimum of zeta to zero (and not 4e8) (changes results)
906      - add a cap on AREA after advecting AREA if seaice_growth is not called
907    o change calculation of Visbeck K:
908      - no longer depend on tapering scheme; instead, compute slope (limited
909        by GM_maxSlope). this is equivalent to what was comuted before with
910        clipping or linear tappering.
911      - fix vertical averaging (wrong by 1/2 level)
912      - leave the old version (but will not be maintained) within
913        #ifdef OLD_VISBECK_CALC / #endif
914      - update output of exp. ideal_2D_oce
915    o change error catch in calc_r_star to improve vectorization
916    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
917      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
918    o adjoint:
919      Re-organized adjoint checkpointing according to Matt Mazloff
920      (but with modifs/completions/cleanups)
921      Storing is now bundled into large arrays to optimized I/O
922      (and second step in cleanup of the_main_loop)
923    
924    checkpoint59b
925    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
926      - export/import (between ocean & coupler) fields needed for ocean DIC.
927    o pkg/seaice:
928      - get rid of three more exchanges seaice_calc_viscosities (required
929        different loop boundaries in seaice_lsr and seaice_ocean_stress)
930      - bug fix in seaice_ocean_stress (update of lab_sea required)
931      - reduce loop boundaries to necessary minimum also in seaice_evp
932      - go back to the old way of computing deltaC/Z as the adjoint likes that
933        better
934    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
935      passive tracer to an Age Tracer) + update output.txt
936    o pkg/exf:
937      - implement A-grid / C-grid selection for wind-stress input files.
938      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
939      for now, in exf_bulk_largeyeager04.F only :
940      - change implementation for case where windspeed + 2. components wind-stress
941        are read-in. AND use rhoConstFresh to convert evap.
942    o pkg/seaice:
943      - use correct EXCH_UV for wind-forcing (on A-grid).
944      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
945        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
946    o pkg/exf:
947      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
948      EXF_INTERPOLATION:
949      - merge global_with_exf/code version of exf_interp_read.F
950        to the main code ;
951      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
952        reading the file ; Important: This options needs to be defined to recover
953        previous code.
954        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
955      - no longer loose real*8 precision along the way when using exf_iprec=64.
956    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
957      - change discretisation of evp-solver in order to avoid another exchange
958        (changes lab_sea) and clean up a little
959      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
960        help the adjoint (this also changes the results slightly)
961      - add a few "_d 0" where they had been missing in seaice_evp.F
962      - cleaning up: remove unused seaice_calc_rhs.F
963    o pkg/exf: some cleaning-up:
964      - change various "constants" into runtime parameters
965      - cleaned-up Large&Yeager04 routine which should eventually
966        replace exf_bulkformulae.F (changed names of S/R and CPP)
967        and merged various ALLOW_ATM_WIND options
968     only used with thsice pkg (in thsice_get_exf.F):
969      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
970        which are used when useStabilityFct_overIce=TRUE (= the default)
971      - change default values of ice & snow emissivity and scale downward LW
972        by ice & snow emissivity.
973    o pkg/thsice:
974     fix few little problems, in thsice_calc_thickn.F:
975      - growth vertically (and not laterally) if iceFrac == iceMaskMax
976      - melt only laterally if hIce < hThinIce (as the comments say)
977      and in thsice_extend.F:
978      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
979      - start to form ice as soon as the minimum ice-volume is reachable.
980     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
981      and cpl_aim+ocn
982    o pkg/kpp
983     - move computation of surface related input fields to KPP into a new
984       subroutine kpp_forcing_surf.F
985     - remove wrong (within bi,bj loops) EXCH calls.
986     - little cleaning (add argument myThid in last position, cvs header ...)
987     - for now, fix conservation problem by exchanging KPPviscAz (may not
988       be the best fix)
989    o pkg/seaice
990     - check for inconsistent evp parameter/cpp-flag combination
991     - remove leftover errIO flat for obsolete name list error handling
992    o OpenAD
993     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
994    
995    checkpoint59a
996    o pkg/seaice: some parameter clarifications and a little bit of clean up
997    o pkg/thsice: rename run-time parameters:
998       himin       -> hIceMin
999       himin0      -> hThinIce
1000       hihig       -> hThickIce
1001       i0          -> i0swFrac
1002       transCoef   -> bMeltCoef
1003       frac_energy -> fracMelting
1004      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
1005       with default values (for now) that do not change the results.
1006      remove old version of thsice vars advection in pkg/seaice.
1007    o in FFIELDS.h:
1008      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
1009      - make pLoad & sIceLoad always available (but still only used if
1010         ATMOSPHERIC_LOADING is #define).
1011    o pkg/kpp: replaced _KPP_RL with _RL
1012    o bug fixes for vertical diffusivity computations when both KPP and
1013        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
1014        are no longer updating the vertical diffusivity array
1015        (passed as argument) but are (re-) setting those arrays.
1016    o pkg/seaice: fix bug in evp solver, while doing that
1017      - change (improve?) discretization of stress computations for both
1018        cgrid-lsr and evp solver
1019      - add a new routine to compute strain rates
1020      - the above changes lab_sea results
1021      - add no slip conditions for evp solver (off by default), lsr-version
1022        may follow
1023      - fix exchange for shear at Z-points (does not change lab_sea)
1024      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
1025        (to force the user to pick a time step since there is not "safe" way
1026        of choosing it)
1027      - add principal stress diagnostics
1028      - rearrange fields for evp a little to avoid having to call a: too many
1029        exchanges and b: exchanges for stress trensor components which we do
1030        not have.
1031      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
1032        of evp, complete rewrite for lsr case (latter is does not yet work
1033        in all cases)
1034    o pkg/kpp: add code to have mixing in shelf ice caverns
1035      - add myThid to all kpp routines (long overdue)
1036    
1037    checkpoint59
1038    o pkg/exf:
1039      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
1040        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
1041      - move exf header files from lower_case.h to UPPER_CASE.h ;
1042        add missing cvs Header & Name
1043      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
1044      - add namelist param. selectStressGridPosition, exf_monFreq
1045      - retire many _CLIM routines, and remove data.exf_clim
1046        + params moved to data.exf
1047        + climsst, climsss now handled by exf_set_gen, i.e.
1048          climss?period=0 refers to constant field,
1049          climss?period=-12 to monthly forcing
1050      - split up namelists in data.exf
1051    o pkg/seaice:
1052      - remove seaice_exch and seaice_exch_uv
1053      - remove superfluous exchange of theta
1054      - add myThid to seaice_budget_ocean/ice
1055      - add new interface for atmospheric wind forcing (C-grid only)
1056        + new routine
1057        + two new field (taux, tauy for stress over ice)
1058        + removed one global field (DAIRN) for C-grid case only
1059    o pkg/thsise
1060      - 2nd set of modifs for thsice adjoint in conjunction with exf
1061    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
1062    
1063    checkpoint58y_post
1064    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
1065      vertical diffusivity, similar to that in MOM4; turned on using
1066      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
1067      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
1068    o Added capability for 3D specification of background vertical diffusion
1069      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
1070      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
1071      "data" file that contains the 3D vertical diffusivity coefficients.
1072    o ice dynamics (pkg/seaice) with thsice thermodynamics:
1073      - add code within pkg thsice to advect & diffuse sea-ice fields
1074      similar to (and will replace) what has been added in  seaice_advdiff.F,
1075      but: - conserving Mass, Heat & Salt.
1076           - better when using non-linear advection scheme (not yet fully tested)
1077           - can also be used in atmospheric set-up (for now, only the diffusion).
1078    
1079    checkpoint58x_post
1080    o IO option for global-file compact format:
1081      - add options when generating topology (utils/exch2/matlab-topology-generator)
1082      - add I/O capability (pkg/mdsio).
1083      - adapt utils/matlab/rdmds.m to read this format.
1084      for now long-line format not yet supported by pkg/mdsio (& exch2).
1085    o shelfice: add a few diagnostics
1086    
1087    checkpoint58w_post
1088    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
1089      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
1090      (and replace horiVertRatio in NH code).
1091      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
1092                         and tutorial_plume_on_slope (sensitive to truncation)
1093    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
1094      directly to drive seaice model (C-grid only)
1095    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
1096     - reintroduce computation of wind from stress,
1097     - compute tau (in exf_bulkformulae.F) from windstress averaged to
1098       mass points to avoid tau = 0
1099     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
1100    o rdmnc.m: make it work with "global" files created with gluemnc
1101    o rdmnc.m : some improvements in dealing with singleton dimension
1102      (tested on all testreport mnc output files).
1103    o genmake2: disable pkg/profiles if netcdf test fails.
1104    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
1105    o move call to cal_readparms up to make calendar parameters/variable available
1106      to all packages
1107    
1108    checkpoint58v_post
1109    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
1110      useDynP_inEos_Zc tested.
1111    o pkg/exf: changes to properly interpolate/mask/scale initial fields
1112    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
1113      and portions thereof.  See read_cs.txt for description and examples.
1114    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
1115      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
1116      following the great-circle arc between those 2 points.
1117    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
1118      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
1119    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
1120     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
1121     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
1122     - still needs work (not working with some options ; efficiency to improve)
1123       and serious testing.
1124     - use this scheme for temperature & salinity in 2 advection test exp.:
1125       advect_xy & advect_xz, respectively.
1126    
1127    checkpoint58u_post
1128    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1129    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1130    o testreport: add option "-skipdir" to skip some test.
1131    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1132      momentum calculation.
1133    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1134    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1135      remove checkpoint.F and the_correction_step.F (no longer used);
1136      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1137    o add option (linFSConserveTr) to correct for tracer source/sink due to
1138      Linear Free surface
1139    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1140    o pkg/thsice: fix reading mnc-pickups
1141    
1142    checkpoint58t_post
1143    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1144    o pkg/mdsio:
1145     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1146       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1147       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1148     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1149     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1150       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1151     - new S/R (to replace MDSWRITEMETA), which allows to write more
1152       informations (variable names, time ...) to meta files.
1153     - modify rdmds.m to give back the meta file content.
1154    o pkg/diagnostics: change vertical interpolation to be safer, and more
1155       flexible (define p-levels to interpolate to in data.diagnostics);
1156      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1157       diagnostic pointer.
1158    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1159    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1160    o fix multi-category seaice:
1161     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1162       SEAICE_MULTICATEGORY
1163     - fix short wave heat flux
1164    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1165       and allow to use EVP solver. Change forward lab_sea: test both EVP
1166       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1167    o Initial check-in of lab_sea adjoint
1168      (very similar to natl_box_adjoint/code_seaice)
1169      * used C-grid and EVP solver
1170      * used KPP, GM/Redi
1171      * uses inAdExact=.TRUE.
1172      * gradient checks fail for both ADM and TLM
1173        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1174        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1175        issue is related to forward mismatch between g77 an ifort
1176    o pkg/seaice: overhaul of thermodynamics
1177     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1178     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1179     - move a few global fields out of SEAICE.h into seaice_growth.F and
1180       make them 2D (FICE/QNETO/ ...)
1181     - remove FO (it is the same as QNETO)
1182     - introduce a few local fields to avoid modifying external fields such
1183       as atemp, etc.
1184    
1185    checkpoint58s_post
1186    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1187      changed exf_set_gen.F so that
1188        genperiod=0 means input file is one time-constant field and
1189        genperiod=-12 means input file contains 12 monthly means
1190    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1191      this affects truncation error ; generate new output file for exp. which
1192      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1193        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1194        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1195        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1196        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1197        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1198    o start implementation of deep-atmosphere and anelastic formulation
1199    o verification: remove 2nd copy of input files and use script "prepare_run"
1200      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1201    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1202    o profiles: fix for multithreaded case
1203    
1204    o diagnostics: rename few diags:
1205      s/'PRESSURE'/'RCENTER '/g
1206      s/'TICE    '/'oceFreez'/g
1207      s/'TAUX    '/'oceTAUX '/g
1208      s/'TAUY    '/'oceTAUY '/g
1209      s/'SWFLUX  '/'oceQsw  '/g
1210      s/DIFx/DFxE/g
1211      s/DIFy/DFyE/g
1212      and add few ocean-forcing diagnostics:
1213      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1214    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1215      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1216      as actual snow thickness.  It now refers everywhere to effective snow
1217      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1218    
1219    checkpoint58r_post
1220    o modifications to pkg/seaice/growth.F, which change results of
1221      lab_sea experiment: fixes pertain to melting snow over open water, to
1222      masking EVAP under sea ice, and to using the correct AREA variable for
1223      computations of EVAP, PRECIP, HSNOW, and GHEFF
1224    o add ability to read bathy, salt, and theta using MNC (off by def)
1225    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1226      both are turned off by default and do no change any results
1227    o seaice advection with pkg/thsice: a step toward the use of non-linear
1228      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1229    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1230      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1231      in natl_box (affects results @ truncation level: update output.txt)
1232    o multi-threading and IO:
1233      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1234      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1235        (needed to work with SingleCpuIO): tested in all verif. exp.
1236    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1237      affects the results (but none of the verification test uses this scheme).
1238    o Adding some pkg/diagnostics capability to pkg/seaice
1239      (will certainly be subject to changes)
1240    o ctrl: adding new control variables:
1241      lwflux, lwdown, evap, snowprecip, apressure, runoff
1242    
1243    checkpoint58q_post
1244    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1245      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1246      high_res_cube configuration by 4% on Columbia.
1247    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1248      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1249      dynamical allocation (seems to work in multi-threaded).
1250    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1251      single CPU io) so that TAF does not have to see EESUPPORT.h
1252    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1253    
1254    checkpoint58p_post
1255    o obcs: stop if obcs is used with useCDscheme = .true.
1256    o shelfice:
1257     - fix a sign error so that no slip at shelfice interface works
1258     - remove stop for combination non-hydrostatic code and shelfice. That does
1259       not mean, that the results are correct, but at least they are numerically
1260       stable
1261    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1262    o added adjoint exch routined for all exch*3d* routines
1263      and updated flow directives
1264    
1265    checkpoint58o_post
1266    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1267      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1268    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1269      and clean-up reading/writing of pickup files.
1270    o fix local version of read/write pickup (NH part) in rotating_tank/code
1271    o simplify EXCH interface:
1272     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1273     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1274    o added the regrid package
1275    o shelfice:
1276     - add a simple boundary layer scheme to reduce noise
1277     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1278    
1279    checkpoint58n_post
1280    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1281       local variable (not in common block).
1282    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1283      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1284      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1285        to work with SingleCpuIO.
1286    o add "_d 0" to real constant of pkg/cfc subroutines ;
1287       update exp. cfc_exemple & tutorial_cfc_offline output files.
1288    o multi-threading and IO:
1289      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1290        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1291      - barrier before and after reading.
1292      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1293      - avoid using MDS_WRITELOCAL for LAND pkg output.
1294      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1295        common-block variables ; Allows multi-threading with master-thread IO.
1296    o change default MAX_NO_THREADS from 32 to 4 ;
1297      and stop cleanly when MAX_NO_THREADS is too small.
1298    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1299    
1300    checkpoint58m_post
1301    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1302       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1303    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1304       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1305       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1306    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1307        add MITgcm_tutorials (= code + all the tutorials)
1308    o ecco, option to compute cost for total ssh (mean+anom)
1309    o consistent with addition of ptracer and ssh in pkg/profiles
1310    o profiles: adding ptracer and ssh
1311    o testreport: change multi-test output-file name
1312      (from output.txt.{name} to output.{name}.txt)
1313    o profiles: now ok for mutli-tiles case
1314    o seaice: add 4 parameters for different advection schemes for area,
1315      (effective) seaice thickness, enthalphy, and snow height. Their default
1316      is the standard parameter SEAICEadvScheme
1317    o calc_gw:
1318     - add cosFacU in zonal viscous flux (harmonic.visc.).
1319     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1320       of tutorial_plume_on_slope.
1321    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1322    o calc_gw: true flux-form, account for horizontal grid spacing.
1323      update rotating_tank results, but not plume_on_slope (affected at
1324      truncation level, 11 digits).
1325    
1326    checkpoint58l_post
1327    o calc_gw:
1328     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1329     - remove side-drag for now (need to fix it); update plume_on_slope results.
1330     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1331    o commit code to make SST/SSS weights spatially variable
1332      (based on either variable in-situ or variable initial T/S weights)
1333    o pkg/ecco:
1334      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1335        now based on horizontally varying weights wthetaLev, wsaltLev
1336      * cost_averagesflags now returns year indices in addition to day, month
1337      * sflux balance is performed on annual basis
1338        (sflxumm, sfluxmm2, bal_sfluxmm)
1339      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1340        including separate counting and multipliers
1341    o pkg/rbcs
1342      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1343    
1344    checkpoint58k_post
1345    o testreport:
1346     - always build in dir. "build" (if not there, mkdir build instead of building
1347       & running in input)
1348     - run in dir run (if it exists), in build otherwise.
1349     - call prepare_run (if input/prepare_run exists)
1350     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1351    o pkg/exf modifications to interpolation and rotation routines for more
1352       reasonable treatment of North Pole singularity: for tracers North Pole
1353       value is set to northernmost zonal-mean value, for zonal velocity it is
1354       set to zero, and for meridional velocity it is set to northernmost value.
1355    o pkg/exf/exf_check_range.F
1356     - add tile index to diagnostics and move stop statement to the very
1357       end of the routine.
1358    o pkg/diagnostics: (diagnostics_main_init.F)
1359      define title of isomorphic variables according to the current config.
1360    o pkg/thsice with pkg/seaice dynamics:
1361    - fix domain of computation (interior only, required for exf) and do exchanges
1362    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1363    o towards a standard way of dealing with multi-threading in MONITOR
1364      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1365    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1366       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1367    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1368    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1369    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1370       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1371    o tracer advection:
1372     - clean-up and simplify calc_common_factors.F
1373     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1374       advection subroutine (but still not used within DST advection S/R)
1375    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1376    
1377    checkpoint58j_post
1378    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1379      from file (collects calls previously in FORWARD_STEP)
1380    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1381    o adjoint store dir. adjusted accordingly
1382    o genmake2
1383      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1384    
1385    checkpoint58i_post
1386    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1387      on wind stress (SEAICEstressFactor defaults to 1.)
1388    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1389      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1390    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1391      on CS-grid: no longer loosing mass.
1392    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1393    o pkg/ggl90: fix sloppy output and fix a bug
1394    o pkg/seaice: added SEAICEuseEVPpickup parameter
1395      - Set to false in order to start EVP solver with
1396        non-EVP pickup files when using SEAICEuseEVP
1397      - fix sign error in diffusion in seaice_calc_rhs
1398    
1399    checkpoint58h_post
1400    * Modifications for bottom topography control
1401      o replace hFacC by _hFacC at various places
1402      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1403      o add non-self-adjoint cg2d_nsa
1404      o update autodiff support routines
1405      o re-initialise hfac after ctrl_depth_ini
1406      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1407    * Adding verification for 5x5 box (4-layer) bottom topography control
1408    
1409    checkpoint58g_post
1410    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1411       used for mean seasonal cycle, mean diurnal cycle); add an example
1412       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1413    o pkg/ggl90:
1414      - add parameter (minimum surface kinetic energy)
1415      - fix bug (avoiding division by zero)
1416    o couple pkg/thsice to pkg/seaice:
1417      - modify advection in seaice to accomodate new scalar fields to be advected
1418      - only muliDimAdection scheme work with seaice/thsice
1419      - mapping of thsice-variables to seaice-variables, back and forth
1420      - does not break the verification experiments, but does not give the
1421        desired results either
1422    o pkg/seaice
1423      - make (default) second order advection a bit less confusing?
1424    
1425    checkpoint58f_post
1426    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1427      to pkg/seaice):
1428      - new routines thsice_map_exf and thsice_get_exf provide the interface
1429      - add an additional formal parameter to thsice_solve4temp
1430    o pkg/exf:
1431      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1432      - correct Stefan-Boltzmann constant
1433      - new parameter for longwave surface emittance
1434      - separate some stuff from exf_bulkformulae into new routines  
1435        exf_radiation, exf_wind
1436      - add new parameters and constants: longwave emissivity for ocean, ice
1437        and snow, evaporation parameters over ice
1438      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1439        either wind from stress or stress from wind
1440    o pkg/thSIce:
1441    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1442    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1443       and THSICE_CALC_THICKN
1444    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1445    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1446      to make debugging easier.
1447    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1448    o pkg/bulk_force:
1449      - clean-up comments and parameters ;
1450      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1451    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1452      generate new output for test-experiment: aim.5l_cs.thSI
1453    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1454      testreport accordingly
1455    
1456    checkpoint58e_post
1457    o SEAICE_CGRID adjoint done
1458    o R_STAR adjoint implemented.
1459      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1460      * need to sort out init. of h0facc, etc.
1461    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1462      to be able to use it in pure forward.
1463    
1464    checkpoint58d_post
1465    o upgrade simple test-experiment to tutorial example:
1466     step.1: duplicate the experiment and (step.2) will remove the old copy.
1467      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1468      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1469      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1470      tutorial_global_oce_biogeo    <- copy of dic_example
1471      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1472      tutorial_plume_on_slope       <- copy of plume_on_slope
1473      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1474      tutorial_global_oce_optim     <- empty for now (David ?)
1475      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1476     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1477    o correct a sign problem in cost_scat.F
1478    o obcs and ptracers: fix boundary conditions for advections schemes
1479      with larger stencil
1480    o thsice adjoint: start
1481    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1482      completeness
1483    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1484      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1485    o ptracers adjoint:
1486      * avoid extensive recomputatations
1487      * fix missing re-init. of gptr (missed by TAF)
1488    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1489      me to turn off the excessive output to STDOUT that this package produces
1490    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1491      and add those terms in Vector-Invariant formulation.
1492    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1493      if the control period (xx_hfluxperiod etc) is 0
1494    o in profiles pkg, clean routines and fix details
1495    o in ecco pkg, reading ssh data:
1496      fix problem in case the model does not start at iter0=0
1497    o fix mnc-pickup/restart for ptracers
1498    o new package prifiles:
1499      code to compute profile-based cost by Gael Forget
1500      (modifs in ecco, ctrl, autodiff)
1501    o Benign bug fix in initialization (spotted by M. Mazloff) of
1502      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1503    
1504    checkpoint58c_post
1505    o adjoint: finish NLFS adjoint and provide reference output in
1506      verification/global_ocean.90x40x15/results_ad_nlfs
1507    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1508      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1509      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1510      with SEAICE_CGRID defined.
1511    o move calendarDumps from "data" to "data.cal" and clean-up the code
1512      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1513    o add useEXF & useCAL flags (for now, set in hard-coded way)
1514    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1515      (were missing in NH mode, and wrong in quasihydrostatic mode).
1516      waiting for Chris updated version of calc_gw to add those CALLs.
1517    o fix bug in quasihydrostatic S/R ;
1518      add a test for this option: global_ocean.90x40x15.qshyd
1519    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1520      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1521    o add on/off flag useOffLine for package OFFLINE
1522    o seaice:
1523      - modify advection so that it works also on the C-grid
1524      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1525        problem in multi-tile runs with C-grid
1526      - add flags for clipping ice velocities and/or masking solver forcing
1527      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1528        C-grid solver
1529      - added a few comments to seaice_diffusion.F
1530      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1531        are now exclusive)
1532      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1533        required re-ordering the code a little:
1534       + make DAIRN global variable (defined in SEAICE)
1535       + move computation of the viscosities eta and zeta into a new separate
1536         routine (because I need to recompute them in seaice_ocean_stress.F)
1537    
1538    checkpoint58b_post
1539    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1540      update output.txt of exp. aim.5l_cs.thSI
1541    o various mnc cleanups and improvements:
1542      + shrink lookup tables by factor of ~4
1543      + better error reporting when running out of lookup space
1544      + able to handle longer path/file names (up to 500 chars)
1545    o adjoint:
1546      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1547      - TBD: "hidden" mom_vecinv recomp. in dynamics
1548    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1549     (allow to differentiate between forcing components using new integer flags:
1550      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1551     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1552    o ecco
1553      - enable trend removal from SSH anomaly obs.
1554    o adjoint
1555      - a fix for PmEpR when #undef EXACT_CONSERV
1556      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1557      - try to fix "hidden" recomp. in forward_step for NLFS
1558        (NLFS seems broken sometimes after I checked it in)
1559    o seaice:
1560     - add c-grid version of the dynamic solver:
1561       + three new routines that are the c-grid substitute lsr, dynsolver
1562         and ostres
1563       + put a few fields that were local to dynsolver into global common
1564         blocks, so that I can move the computation of stresses etc into
1565         seaice_lsr (saves coding but may break the adjoint).
1566     - replace more hardwired parameters by runtime parameters
1567     - add ice masks that mask the rhs of the implicit solvers where there
1568       is no ice (commented out in seaice_dynsolver, because i am not sure
1569       if this works properly), eventually this should replace the clipping
1570       of ice velocities in seaice_dynsolver to +/-40cm/s.
1571    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1572      include it only where its needed
1573    o move balancing of fluxes before the call of external_forcing_surf
1574    o seaice:
1575      - correct units of turning angles (now they are really in degrees)
1576      - move computation of GWATX/Y out of main routine into dynsolver
1577      - initialize GWATX/Y in seaice_init
1578    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1579      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1580    o seaice: add runtime flags for turning angles (default to zero)
1581    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1582      and trend from exf forcing and ctrl control adjustments
1583    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1584      (since checkpoint57x_post)
1585    o change the default rotation period to 86164.s = the Earth rotation
1586    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1587      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1588    o seaice advection: add code for choosing between the default (2nd order
1589      central differences) and multiDim advection schemes provided by
1590      pkg/generic_advdiff
1591    o seaice:
1592      - removed all references to SEAICE_GRID.h fields from
1593        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1594        (cubed-sphere configuration will change a little)
1595      - grid computations in seaice_init are obsolete now.
1596      - cleaned up code a little so that is easier to read (hopefully).
1597      - added new (better?) discretizations of default advection and diffusion
1598        (turn on with SEAICEuseFluxForm)
1599      - replace 1 in 3d global fields by kSurface in growth.F
1600      
1601    checkpoint58a_post
1602    o seaice:
1603      - bug fix in advect.F
1604    o shelfice:
1605      - separate shelfice load anomaly from pload (breaks with time
1606        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1607        Its default is 0., but it may be computed more cleverly from (unknown)
1608        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1609        done offline. A good approximation of the pressure load anomaly is
1610        necessary to avoid large initial adjustment processes underneath
1611        deep-reaching shelfice.
1612      - small fix in ISOMIP shelfice_thermodynamics
1613      - add more sophisticated thermodynamics of Hellmer (1989), this is
1614        now the default
1615      - give a few constants more intuitive names
1616    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1617      if bulk formulae are used in long integration (especially EmPmR). Turn
1618      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1619      if balancePrintMean, the imbalance that is substracted is printed to
1620      STDOUT.
1621    o fix bug (typo) in obcs_apply_eta.F
1622    o add a new package shelfice which enables us to model the circulation
1623      underneath shelf-ice with draughts of hundreds of meters.
1624     - works
1625     - to do: + include improved thermodynamics
1626              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1627                instead of new field kTopC
1628              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1629                instead of new field R_shelfIce and new code in ini_depth.F
1630                and ini_mask_etc.F?
1631              + adjust vertical mixing schemes?
1632    o seaice pkg:
1633     - add a cpp-flag to include a simple formula for a salinity dependent
1634       freezing point of sea water at the surface
1635     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1636       meridional stresses are now different (and hopefully correct)
1637    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1638       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1639       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1640    o pkg/diagnostics: add options and parameters for regional-statistics
1641       diagnostics ; define regions by reading a region-mask from a file
1642       (might add other options later)
1643    o pkg/bulk_force:
1644     - add option and parameters to use AIM surface-flux formulae.
1645     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1646       others forcing fields (defined in PARM05, parameter file "data") are loaded
1647       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1648     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1649     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1650     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1651       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1652     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1653    
1654    checkpoint58
1655    o add "--embed-source" option to genmake2 which, when the supporting
1656      tools can be compiled (as determined by genmake2) will turn on the
1657      embed_files package which then embeds the entire MITgcm source code
1658      (*.[fFhc] + Makefile) used for the build within the executable
1659      - requested by CNH but off by default
1660      - adds a paltry <9MB to the mitgcmuv executable in most cases
1661      - only writes the output when useEMBEDSRC in eedata is true
1662    o clean up 3-dim. relaxation codes:
1663      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1664      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1665      * Thanks to Tom Haine for testing!
1666    
1667    checkpoint57z_post
1668    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1669      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1670    o fix the pickup behavior for obcs in combination with ptracers
1671    o fix a bug in ptracers_external_fields_load
1672    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1673      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1674    o transfered surface NH pressure to eta field (if exactConserv).
1675    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1676         and update lab_sea output.txt file.
1677    o completing 3-dim. relaxation code: additional term
1678         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1679      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1680      * At compile time, in "EXF_OPTIONS.h" set
1681          #define  ALLOW_CLIMTEMP_RELAXATION
1682          #define  ALLOW_CLIMSALT_RELAXATION
1683      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1684          tauThetaClimRelax3Dim = 15552000.0,
1685          tauSaltClimRelax3Dim  = 15552000.0,
1686      * 3 cases:
1687          1) Use a constant-in-time 3-dim. field
1688          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1689          3) Real-time relax. to time-evolving prescribed field
1690    o Adding Laplacian-type smoothness constraint on
1691      initial and boundary (forcing) controls (ic, bc)
1692      * enable at compile-time via
1693        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1694      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1695      * Absolute scale somewhat unclear so far
1696      * no area weighting was included since no other cost term does so far
1697    
1698    checkpoint57y_post
1699    First step for a NLFS adjoint
1700    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1701    o new init. routines for calc_r_star, calc_surf_dr
1702    o still need to deal with ini_masks_etc
1703    o testreport seemed happy
1704    checkpoint57y_pre
1705    
1706    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1707    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1708    o add new offset feature to offline pkg (plus minor cleanup)
1709    o cfc fixes for final year of integration
1710    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1711      be in GCHEM_OPTIONS).
1712    
1713    checkpoint57x_post
1714    o fix testreport Pb in multiple test experiment.
1715    o cleanup our namelist syntax in verification:
1716      - make it more F95 standards compliant (some work still needed)
1717      - allows the vast majority of our tests to work with gfortran
1718    o Non-Hydrostatic:
1719     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1720     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1721    o Allow to apply AB on T,S rather than on AB(gT,gS):
1722     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1723     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1724       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1725     - need a "clever" read_pickup to restart from the other AB formulation
1726    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1727    o remove some unused variables (reduces number of compiler warnings)
1728    o adjoint
1729      * Disable useVariableViscosity for adjoint for time being
1730        (there are a number of extensive recomputations)
1731      * Initialize certain variables needed for adjoint
1732    
1733    checkpoint57w_post
1734    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1735                 fix the singleCpuIO RS version of MDSWRITEFIELD
1736       and add a WARNING if using globalFiles=T with multi-processors.
1737    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1738      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1739    o tracer advection scheme:
1740      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1741       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1742       was not very convenient).
1743      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1744       (further tests needed for the implicit DST & Flux-Limiter schemes).
1745    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1746      and sRef for convenience, handy, when you want to initialize
1747      ptracers in a large domain with a constant non-zero value. Also,
1748      untangle ptracers_init.F a little.
1749    
1750    checkpoint57v_post
1751    o change dome exp. to use variable viscosity in side-drag terms.
1752    o remove all the files from the cfc_offline test since they are now
1753      incorporated into tutorial_cfc_offline which has been producing
1754      identical results for a few days of testing
1755    o add new parameter: sideDragFactor to enable half-slip-side BC
1756      and change side-drag S/R to use viscosity from mom_calc_visc
1757      (can switch back by setting sideDragFactor=0.); affects results at
1758      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1759       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1760    o vorticity & strain are now computed without masking, to account for
1761      no-slip-side BC in variable viscosity calculation ; mask is applied
1762      anyway later on, before computing advection/coriolis terms.
1763    o modify exp4 to test new obcs support for reading from external files
1764      and for passive tracers
1765    o fix behavior of ptracers_monitor when monitor output is written to a
1766      netcdf-file; still not independent of monitor.F (writes in the same
1767      file).
1768    o change default value of tRef (put a uniform, meaningful value for ocean
1769      & atmos) and initialize sRef (was missing, as Martin mentioned).
1770    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1771      to be proportional to enstrophy dissipation length.  Thus,
1772       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1773      This is now consistent with Smagorinsky and with the manual.
1774    
1775    checkpoint57u_post
1776    o OBCS and PTRACERS: add open boundary support for passive tracers
1777      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1778        OB-values from file; this is not different from the way theta and salinity
1779        are treated
1780      - however, Orlanski-radiation conditions are not supported, and the model
1781        will stop if you use pTracers and Orlanski at the same time.
1782      - beefed up the rountine obcs_external_fields_load: now only those open
1783        boundary values are overwritten with values from files for which there
1784        are really files, otherwise the OB-fields remain untouched. This makes
1785        it possible to use different OBs at different ends of the domain (as
1786        with EXF)
1787    o reduce number of exch calls in shap_filt (s2).
1788    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1789      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1790    
1791    checkpoint57t_post
1792    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1793    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1794      same truncation, independent of the face number: affects affects several
1795      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1796    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1797      note that biharmonic viscosity + no-slip was not tested in any experiment.
1798    o fix bug in non-linear free-surf side-drag ; generate new output for
1799      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1800    o make mnc honor the writeBinaryPrec flag for most kinds of output
1801    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1802    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1803      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1804    o add brackets in multi-terms sum to get same truncation, independent of
1805      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1806      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1807    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1808      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1809      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1810      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1811      Suggested values of viscosity parameters found in mom_calc_visc.
1812      Many new viscosity diagnostics available.
1813    
1814    checkpoint57s_post
1815    o Add clearing-house for viscosity calculations, mom_calc_visc and
1816      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1817      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1818      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1819      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1820      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1821      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1822      ViscAhStrain and viscAhTension are now retired.
1823    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1824    o In response to JMC's bug report, genmake2 now ignores any soft-links
1825      that it finds in the *current* directory when searching for files.
1826      Soft-links found in any other source directories will still work as
1827      they did before.
1828    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1829      a C routine to unlimit the stack size
1830    o mnc-ify pkg/aim snapshot vars
1831    o mnc-ify pkg/land as requested by Daniel
1832    o various changes to mnc including:
1833      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1834      - output can now be grouped so that all files within a group
1835          change the ITER portion of their names in lock-step together
1836      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1837          and works with both EXCH1 and EXCH2 (but needs more testing)
1838      - writing works for all verification test cases w/ g77 on Linux
1839    
1840    checkpoint57r_post
1841    o make MNC variable initialization happen earlier
1842    o add diagnostics for (almost) each term of the momentum Eq.
1843    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1844    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1845    o remove MINIMAL_TAVE_OUTPUT option ;
1846      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1847    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1848      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1849    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1850    o add time-dependent SST, SSS control
1851    o cost terms in ecco/ modularized (new cost_generic.F)
1852    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1853    o new infrastructure for seaice model vs. obs misfits in seaice/
1854      * driver from the_main_loop.F is seaice_cost_driver.F
1855      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1856      * gradient check in Exp. 6a of natl_box_adjoint/
1857    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1858      (see README file)
1859    
1860    checkpoint57q_post
1861    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1862    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1863      - bug was reported by Jean-Michel and Ian Fenty
1864    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1865      update exp. cpl_aim+ocn output.
1866    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1867      Needed for high-res. runs with large global files
1868      to be able to limit tapelev size
1869    o Changed some tests for adjoint:
1870      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1871      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1872      * global_ocean.90x40x15/ back to default 3-level checkpointing
1873    o Modifications to enable scripted COMMON to MODULE conversion
1874      * verification/OpenAD/code/ has necessary scripts and description;
1875      * converts, compiles and runs successfully;
1876    
1877    checkpoint57p_post
1878    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1879    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1880      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1881    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1882    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1883      (was already the case for dissipation with mom_vecinv,
1884       and also the case for grad.PhiHyd when staggered-timeStep)
1885      This will allow to put dissipation out-off the AB time-stepping.
1886     Unfortunately, affects truncation error. Update output of exp. that "fails"
1887      (cg2d matching number) and leave the others for later: front_relax(10),
1888      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1889      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1890    
1891    checkpoint57o_post
1892    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1893      (2) its ready to be documented during the 20050801 DocFest
1894    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1895      for ideal_2D_oce and lab_sea on linux_ia32_g77
1896    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1897      in global1x1_tot/code_seaice_adj to access indices 32, 33
1898      (worth another tag)
1899    
1900    checkpoint57n_post
1901    o adding precip control xx_precip 32
1902    o adding swflux control xx_swflux 33
1903    o Replacing 10 forcing penalty cost routines by 1 generic.
1904    o Implementing partitioning in time-mean and variable adjustment
1905      for atmos. state.
1906    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1907    o in natl_box_adjoint:
1908      * updated exp 1 to 10
1909        (but does not have time-mean vs. variable split results yet)
1910    o updated global1x1/*_seaice_adj/
1911      to incorporate latest changes
1912    o enable useSingleCpuIO for mdsio vector routines
1913      (applies in particular to tapelev I/O)
1914    o removed inefficient K-loop in all active_file*control*.F
1915    
1916    checkpoint57m_post
1917    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1918      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1919    o pkg/exch2: filling of face-corner halo regions is optional
1920      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1921    
1922    checkpoint57l_post
1923     tag before updating tutorials (pre-release-2)
1924    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1925       for output and interpolation of input fields onto model grid)
1926    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1927       Affects results of exp. rotating_tank ; update output.txt.
1928    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1929          and taking the square quantity and/or using a fraction-weight field.
1930    o fix aim_diagnostics_init.F mate numbers.
1931    o add mnc output capability to diagnostics/diagstat and update
1932      our cvsignore files for the ACSII output generated
1933    
1934    checkpoint57k_post
1935    o lab_sea now uses diagnostics package and provides a suite of
1936      new EXF diagnostics output.
1937    
1938    checkpoint57j_post
1939    o exf
1940      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1941        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1942        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1943      * extended diagnostics output
1944        - now includes all EXF variables
1945        - hs, hl moved to common block
1946        - separate S/R for diagnostics, called after ctrl vector is added
1947        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1948        - EXFqnet contains true Qnet (i.e. includes qsw)
1949      * updated verif. lab_sea, global_with_exf
1950      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1951        to ensure that diagnostics sees a true EXFqnet
1952    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1953    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1954      several times with different frequencies.
1955    o mnc-ify the thsice package as requested by Daniel Enderton
1956      - the monitor--MNC output needs work
1957      - many attributes need to be added (most are currently blank)
1958    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1959      - many attributes need to be added (most are currently blank)
1960    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1961    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1962    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1963      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1964         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1965    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1966     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1967    
1968    checkpoint57i_post
1969    o Diagnostics package was changed: diagnostic allocation is now deactivated
1970      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1971    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1972      add 1rst Order upwind vertical Shear.
1973    o add a quick fix for A/B checkpointing in OFFLINE mode
1974    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1975      end-run around the C/Fortran linking horror in eesup/src/timers.F
1976    o added pkg/runclock: allows user to terminate run based on wall clock
1977    o added non-hydrostatic scaling parameter: nh_am2
1978    o pkg/my82: futile attempt to make results compiler-independent by adding
1979      some "_d 0", etc. no effect.
1980    o for mnc output, fill the 'T' coordinate var with myTime and create a
1981      separate 'iter' variable for iteration count
1982    o pkg/diagnostics:
1983      add new capability: output of Global/Regional & per-level statistics ;
1984      tested against monitor output (including land & thSIce) on various exp.
1985    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1986    
1987    checkpoint57h_done
1988      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1989      data.diagnostics, data.gchem, data.ptracers) is done.
1990    
1991    o pkg/diagnostics: prepare for Global/Regional statistics.
1992      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1993    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1994      and rename it: DIFFERENT_MULTIPLE
1995    
1996    checkpoint57h_post
1997    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1998    o pkg/diagnostics: change output frequency, now in seconds (instead
1999      of Nb of iterations). This requires to change data.diagnostics.
2000    checkpoint57h_pre
2001    
2002    o in mnc, let the user create the output dir if both mnc_outdir_date
2003      and mnc_outdir_num are false
2004    o add fflags() to pkg/diagnostics which allows one to specify, on a
2005      per-file basis, the file precision [default behavior is unchanged]
2006    o added diagnostics to pkg/kpp, including computation of mixed layer
2007      depth based on a temperature/density criterion
2008    o updated verification/natl_box to test the new pkg/kpp diagnostics
2009    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
2010    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
2011    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
2012      not mnc -- this mistake was found by JMC and is now corrected
2013    
2014    checkpoint57g_post
2015    o add Adams-Bashforth 3rd Order time stepping:
2016      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
2017      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
2018    checkpoint57g_pre
2019    
2020    o make lambda[Theta,Salt]ClimRelax spatially varying
2021      (default remains spatially uniform constant based on tau)
2022    o added new control variables
2023      * init. uVel, vVel, etanN
2024      * lambda[Theta,Salt]ClimRelax
2025    o separate masks used for ctrl_pack/unpack 'from write_grid' output
2026      (suggested by G. Forget)
2027    
2028    checkpoint57f_post
2029    o add parameter "baseTime" = model base time = time at iteration zero
2030      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
2031      account for baseTime shift
2032    o move Coriolis arrays from PARAMS.h to GRID.h
2033    checkpoint57f_pre
2034    
2035    o mnc-ifying the seaice package
2036    o introduced an alternative length scale calculation for use in the limiting
2037      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
2038    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
2039    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
2040      as well as grad(vort3).  Made it compatible with both approximate form
2041      for the cubed sphere and full form of these gradients.  Added flag
2042      useFullLeith to select between approximate and full form.  
2043    o add "d0" in getcon.F to reduce differences between compilers/platforms
2044      update output.txt of exp. fizhi-gridalt-hs
2045    o change port_rand funtion to allow to set the seed.
2046    o fix obscure MNC bug involving conversion between reals and integers
2047      - it caused no problems with certain (eg. gcc, ifc) compilers but the
2048        new version is now more standards-compliant
2049    o adjoint-related modifications
2050      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
2051      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
2052      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
2053    
2054    checkpoint57e_post
2055    o Adding eddy stress controls a la Ferreira et al.
2056    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
2057    
2058    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
2059      update output.txt of exp. fizhi-gridalt-hs
2060    o add more "Z" dimensions and associated coordinate vars to MNC
2061    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
2062    o parameter calendarDumps: when set, approximate months (30-31 days) and years
2063      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
2064      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
2065      months and years.  Requires pkg/cal.
2066    o diagnostics: add pickup functionality
2067      - off by default for backwards compatibility
2068      - current version only uses MDSIO -- MNC will be added
2069    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
2070    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
2071    
2072    checkpoint57d_post
2073    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
2074    o modify verification/ideal_2D_oce so that it tests the creation of mnc
2075      output from the diagnostics package
2076    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
2077    o make genmake2 more portable by using ".$FS" instead of ".f" for more
2078      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
2079    o add coordinate variables to the MNC output from the diagnostics package
2080    o change MNC-flags default value: true when useMNC=TRUE
2081    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
2082      the ability (off by default) to read the grid information using MNC
2083    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
2084    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
2085    o do snap-shot diagnostics at the middle of the time-interval (instead of
2086      at the end).
2087    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
2088      new test for AIM with thSIce + slab-ocean
2089    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
2090    o move state variable diagnostics to the beginning of the time step ;
2091      (note: still needs some work specially for snap-shot diagnostics)
2092      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
2093    
2094    checkpoint57c_post
2095    o Change testing option (-ieee) to get closer agreement between g77 & ifort
2096    o generate new output.txt files on faulks with g77 & the new -ieee option
2097    checkpoint57c_pre
2098    
2099    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
2100      update output.txt of exp. global_ocean.90x40x15
2101    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
2102      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
2103    o add saltFlux(+File) forcing capability with periodicExternalForcing
2104    o allow to use pkg diagnostics for GM-Redi & ThSIce output
2105    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
2106    o improvements for the MNC output from DIAGNOSTICS:
2107      - correct handling of the unlimitied dimension
2108      - all dims now have associated coordinate variables
2109      - variables located at U, V, and Corner ("Z") points are now written
2110        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
2111        *all* data points are output
2112    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
2113    o added pkg/seaice/seaice_monitor.F
2114    o mdsio_readfield.F can now read files visible only to master MPI process.
2115    o pkg/seaice: some test code for ice-modified ocean stress
2116    o exf_getffields interpolation defaults to bilinear for all scalar forcing
2117      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
2118      spurious negative numbers for precipitation and humidity.  Will cause
2119      some small numerical differences for integrations using pkg/exf/exf_interp.F.
2120    o pkg/ctrl/
2121      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
2122        May be enabled via doPackDiag
2123      *  introduce z-scaling of
2124         + gradient (doZscalePack) and
2125         + control (doZscaleUnpack)
2126    o pkg/mdsio/
2127      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2128      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2129    
2130    checkpoint57b_post
2131    o simplify options in diagnostics_fill arguments (remove weird combinations)
2132    o fix MNC coordinate variables so that they now contain per-face index
2133      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2134      general, EXCH2 grids are only aligned to a "local" coordinate system
2135    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2136    o Implement instantaneous output within pkg diagnostics:
2137      setting a negative frequency in data.diagnostics produces
2138     "snap-shot" output (as opposed to time-average if freq > 0)
2139    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2140      NOTE: change ptracer diagnostics name: use 2 characters to work with
2141            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2142    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2143      becomes the coordinate variable for the 'T' dimension
2144    o add CF-style coordinate variables to MNC
2145      - just a first cut:  numbers are meaningless on the cubesphere and
2146        missing along the T axis but otherwise it works!
2147    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2148    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2149    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2150      this is based directly on what the model compute, so that the content of
2151      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2152    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2153    o clean up build options files for SunOS, in particular
2154      - remove -traditional from xmakedepend
2155      - change -xarch=v9 to -xarch=native for f77
2156      - restore use of make (not gmake)
2157      - add CC=gcc if using g77
2158    o changes per discussion of AM, JMC, & EH3 today:
2159      - move redundant "grid" variables out of "state" -- in preparation of
2160        creating proper CF-style coordinate variables and in recognition
2161        that any/all grid variables can be easily copied (eg. w/NCO) from
2162        the grid files into any of the other NetCDF files
2163      - *always* output grid variables with MDSIO (this will eventually be
2164        changed)
2165      - output MNC grid file if useMNC is true
2166    o every instance of _END_MASTER() has been found and replaced with
2167      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2168      preprocessors
2169    o re-arrange diagnostics pkg initialisation:
2170     - allow each package to extend the available diagnostics list
2171     - add some checking and fix small problems (multi-threaded, ...)
2172     - new S/R diagnostics_fill (replace fill_diagnostics):
2173       look through the short list of active diag. (instead of the long list)
2174       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2175    
2176    checkpoint57a_post
2177    o this set of changes restores TAMC compatibility
2178      tested for global_ocean.90x40x15 adjoint on trough
2179      (what a pain)
2180    
2181    checkpoint57a_pre
2182    o some modifs in tools/build_options for sunos
2183    o call ctrl_pack for ctrl at end for optimcycle=0
2184    
2185    checkpoint57
2186    o add horizontal bi-harmonic viscosity for vertical velocity
2187      - new parameter viscA4W (defaults to viscA4)
2188      - affects only non-hydrostatic code
2189      - to be done: no-slip lateral boundary conditions
2190    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2191    o implement Implicit Vertical advection for pTracers
2192    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2193      (implemented also for implicit vertical diffusion & advection)
2194    o OBCS: extend application of tracer open boundary conditions
2195      to a strip beyond the boundary of width Olx/Oly
2196    o add call monitor to TAF set of required calls (flow directives)
2197      and include in natl_box_adjoint
2198    o untangle a few ifdefs related to cost, ctrl, autodiff
2199      untangel a few ALLOW_ECCO_OPTIMIZATION
2200    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2201      (theta2, salt2 in ecco_cost_weights)
2202    
2203    checkpoint56c_post
2204    o OBCS as control variables
2205      - update ctrl_ad_diff.list, obcs_ad_diff.list
2206      - remove balance of obcs controls from default
2207      - fix index bug nobcs in ctrl_init
2208      - fix dummy fields filen in ctrl_pack
2209      - add dummy weights for obcs
2210    o lsopt: comment out fort.94 output
2211    o optim:
2212      - remove unnecessary header files
2213      - adjusted namelists
2214      - add xerbla.F to Makefile
2215    o exf:
2216      - multiple modifications of exf_check_range
2217      - unit change in exf_init_runoff from [m/year] to [m/s]
2218    o mdsio:
2219      - i/o-vector change debugLevel from debLevA to debLevB
2220    
2221    checkpoint56b_post
2222    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2223      is called from DO_THE_MODEL_IO
2224      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2225      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2226      - clean up PTRACERS_WRITE_TIMEAVE a little
2227    o add another verification experiment that tests both the cfc-pkg and
2228      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2229      reactive tendencies treated inline with regular timestepping
2230    o testreport previously did a lousy job of comparing small numbers, so
2231      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2232      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2233      testreport.
2234    o ptracers_monitor: bug fix for MPI
2235    
2236    checkpoint56a_post
2237    o GCHEM: finish reorganizating the package
2238      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2239        (introduces another 3D-array for each passive tracer, but only if
2240        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2241        gchemTendency is not needed because the timestep is done separately)
2242      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2243      - GCHEM is now---more or less cleanly---separate from PTRACERS
2244      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2245        so clear to me how that should be done in a general way.
2246    o CFC: improve formatting of output in CFC_ATMOS
2247    o PTRACERS:
2248      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2249        that ALL experiments with ptracers enable can be checked. This makes
2250        GCHEM_MONITOR obsolete.
2251      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2252        monitorFreq
2253      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2254    o add PTRACERS (PTR0[1-5]) to testreport output
2255    o exf_check_range:
2256      * default changed to .TRUE.
2257      * will check values for niter0 if debLevA, every timestep if debLevB
2258      * STOP in exf_check_range if 'out of range'
2259      * range chosen generous to allow for potential extema
2260      TBD: a version with stricter range
2261           permitted range would be runtime parameters
2262    o GMredi:
2263      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2264      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2265      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2266    o GCHEM:
2267      - move call to GCHEM_FORCING_SEP, so that it is now called before
2268        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2269      - introduced a useGCHEM runtime flag and applied it everywhere.
2270      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2271        this flag is now only visible within GCHEM-pkg routines.
2272      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2273        be replaced by a 3D array that is computed before thermodynamics; for
2274        this, the tracer ID iTracer had to be included into the parameter list
2275        of ptracers_forcing
2276      - set up forward_step to call gchem_forcing, that will replace
2277        gchem_forcing_int in ptracers_forcing
2278      - cleaning up
2279    o small cleaning of exch2: remove files that are also in eesupp/src
2280    
2281    checkpoint56
2282    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2283    o mnc: cleanup "full" files--fixes out-of-memory problem
2284    o ECCO-GODAE
2285      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2286      * fully merged and updated from SIO code
2287        windstress sign change affects
2288        - exf_inscal_[u/v]stress
2289        - sign of xx_tau[u/v] adjustments
2290        - signs in cost_scat
2291      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2292      * natl_box_adjoint updated and compressed
2293      * 2-level checkpoint switch added
2294        (tested in EXP. 1 of natl_box_adjoint)
2295      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2296    o SVD
2297      * first complete, non-hacked version for SVD calculations
2298      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2299        performed via direct access files admtlm_vector.it????
2300        (via ctrl_[un]pack)
2301      * optimcycle is used for ARPACK iteration counter
2302        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2303      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2304        and add linear transforms where necessary
2305      * controls are initial/final SST, SSS (can be extended; need to check
2306        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2307    o mdsio: filename info to both stderr, stdout
2308    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2309      from sign change
2310    
2311    checkpoint55j_post
2312    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2313      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2314    o add consistent build directories and .cvsignore files to verification
2315    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2316    o make all subroutines 30 or less characters in length for certain older
2317      compilers to work (a thorough search only turns up two routines in
2318      pkg/ptracers)
2319    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2320      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2321    
2322    checkpoint55i_post
2323    o change arrays for total vertical diffusivity (2.D if explicit,
2324      3.D if implicit) ; each ptracer uses its own background value.
2325    o added mnc/NetCDF output capability to ocn_compon_interf
2326      - added bits to verification/cpl_aim+ocn so that it can run on
2327        ITRDA and other clusters without the mpirun "-wd" option
2328    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2329      configuration
2330    o give MNC the ability to create additional files rather than
2331      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2332      - the default is just less than 2GB which is a practical limit
2333        on many systems
2334    o Compute the non-local term using either KPP vertical diffusivity (=default)
2335       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2336    
2337    checkpoint55h_post
2338    o add verification test "vermix"
2339    o remove all the *_ioinc flags and replace with the single global
2340      outputTypesInclusive flag
2341    o allow to set a vertical profile of vertical diffusivity for T & S
2342    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2343    o useMNC moved from data.mnc to data.pkg
2344    
2345    checkpoint55g_post
2346    o Renaming carbon AD experiments to comply with testreport conventions
2347    o Updating adjoint of Held-Suarez hs94.1x64x5
2348    o Fixing directives for non-ECCO forward_step, after ECCO directives
2349      have been fixed to avoid recomp. of do_oceanic_phys
2350      Works well for global_ocean.90x40x15,
2351      but recomp. issue remains for carbon
2352    o Updating adjoint output for natl_box_adjoint after
2353      pkg/ecco has been modified (see taga c55d_post)
2354    
2355    checkpoint55f_post
2356    o rename to timeave_init_fixed
2357    
2358    checkpoint55e_post
2359    o some delicate re-shuffle of store directives to avoid one
2360      extra call of do_oceanic_physics
2361      affects ecco_the_main_loop.F, do_oceanic_physics.F
2362      checkpoint_lev1_directives.h
2363    o NB: this may break global_ocean adjoint temporarily,
2364      but it is clear how to fix it. Will do later, need this now.
2365    
2366    checkpoint55d_post
2367    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2368    o ecco_cost_weights is modified to 1x1 runs
2369    o modifs to allow observations to be read in as
2370      single file or yearly files
2371    o enable to read exf forcing fields as either
2372      single file or yearly files (flag useExfYearlyFields)
2373    checkpoint55d_pre
2374    
2375    o switch between 2-level and 3-level checkpointing
2376    o add ability of MNC to write local and "partial" (eg. 2D slices where
2377      the full 3D field is never actually stored) arrays to NetCDF files
2378      with the correct (that is, the complete multi-dimensional) set of
2379      array indicies
2380      - used in mom_vecinv() to write the diagFreq output
2381      - tested (demonstrated) in verification/aim.5l_cs
2382    o further mnc-ification
2383      - add verification/lab_sea to the list with mnc setups
2384      - fix undefined mnc v-names in cd_code
2385      - add kpp to mnc output (both snapshot and timeave)
2386    o non-hydrostatic code
2387      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2388        in calc_gw.F
2389      - defaults to viscAh
2390      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2391        friction or Leith) in non-hydrostatic mode, as long as there is
2392        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2393    o pkg/cost
2394      extend simple cost functions to treat time mean quantities
2395      (T,U,V) via cost_accumulate_state from cost_tile
2396    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2397        be 2 times larger than the minimum size the advection scheme requires.
2398        now get a perfect conservation of salt in advect_cs test-exp (updated)
2399    o GGL90 (Gaspar's TKE mixed layer)
2400      - add horizontal diffusion of TKE, requires exchanges in
2401        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2402        default. In OPA there is no horizontal diffusion of TKE but the
2403        mixing coefficients are computed from a horizontal average of TKE of
2404        6 points or so. I think that diffusion has a little more physical
2405        justification.
2406      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2407        was in vain)
2408      - mask tke-variable in ggl90_init
2409    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2410    o fix biharmonic diffusion on CS-grid.
2411    o more obcs stuff
2412      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2413        for reading boundary values. This routine is called from
2414        obcs_prescribe_read
2415      - updated obcs_check
2416      - changed sponge layer relaxation parameter units for days to seconds
2417      - turned off sponge layer by default
2418      - changed argument list of OBCS_CALC to myTime+deltaTclock
2419      - fixed about 35 bugs in obcs_external_fields_load
2420    
2421    checkpoint55c_post
2422    o obcs stuff
2423      - new runtime flags useOBCSprescribe, useOBCSbalance
2424      - re-arranged obcs_calc
2425      - moved exf_getobcs to obcs_prescibe_read
2426        obcs_prescibe_read is called after ORLANSKI stuff
2427        and independent of it (executable can contain all).
2428      - updated obcs_check
2429      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2430        These may be necessary only if tangential velocities are
2431        prescribed at OB, not sure, needs testing.
2432    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2433      which simplifies the calls and passes the ifc check-bounds test
2434    
2435    checkpoint55b_post
2436    o add a 2D scalar, Z location, exchange_2 routine.
2437    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2438      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2439      affects advect_cs results (for the wrong reason): update output.txt
2440    o use a more standard discretization for biharmonic viscosity ;
2441     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2442      affects results of dome set-up: update output.txt
2443    o fix gad_advection.F (CubedSphere part), back to version 1.23
2444    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2445    
2446    checkpoint55a_post
2447    o merged code to
2448      * prescribe/read time-dependent open boundaries
2449        (works in conjunction with exf, cal)
2450      * sponge layer code for open boundaries
2451      * each boundary N/S/E/W now has its own CPP option
2452        (healthy for the adjoint)
2453    
2454    checkpoint55
2455    o up-to-date adjoint of previous breaks
2456      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2457      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2458      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2459      - carbon: * remove tr1-related adjoint verification
2460                * add ptracer as control variable
2461    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2462      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2463    
2464    checkpoint54f_post
2465    o in verification/carbin/ remove experiment related to
2466      ALLOW_PASSIVE_TRACER (array tr1 etc)
2467      code_ad/ input_ad/ results_ad
2468    
2469    o add two new packages
2470      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2471        + subject to optimization (memory)
2472      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2473        + subject to reordering (many GOTOs in the original code)
2474        + so far opps is called for every (i,j) point, and then operates in
2475          the vertical; one may want to reorder the scheme in order operate in
2476          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2477          fields)
2478    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2479      - all verification tests compile and run with linux_ia32_g77
2480      - defaults are compatible with current input files--nothing
2481        should change if you were not previously using MNC
2482      - MNC output has been added in numerous places (eg. timeave)
2483        but there are still a few writes not yet do-able with MNC
2484        (this is in progress)
2485      - flags now allow for either/or/both use of MDSIO and MNC and
2486        documentation will soon follow
2487      - numerous small formatting cleanups for ProTeX
2488    o add version info (via BUILD_INFO.h) to MNC and stdout
2489    
2490    checkpoint54e_post
2491    o add two new packages
2492      - pp81 (Packanowski and Philander, 1981), Richardson number and
2493        stratification dependent mixing
2494      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2495      - these scheme operate in a similar manner as KPP (without ghat, of
2496        course), however there is only one diffusivity that is used for both
2497        temperature and salinity (and passive tracers)
2498    o add offline package
2499    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2500      provided by Stephanie Dutkiewicz
2501    o genmake2: add ability to search for C compilers and cleanup test output
2502      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2503    
2504    checkpoint54d_post
2505    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2506    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2507      leading to additional shift by 5 days each year of integration
2508       (i.e. leading to considerable offset over the years)
2509    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2510    o start with no AB and no initial filtering (staggerTimeStep):
2511      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2512    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2513      (external loading & cpl import/export stay in forward_step.F)
2514    o update coupling interface to work with new staggerTimeStep
2515    o change MDSIO ptracers_pickup.
2516    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2517    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2518    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2519    
2520    checkpoint54c_post
2521    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2522      this affects (truncation error) output.txt of test-exp:
2523       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2524    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2525    o change Qnet to always be the net heat flux, (+upward).
2526      affects (truncation error) output of natl_box exp.: updated
2527    o define the max number of passive tracers in PTRACERS_SIZE.h
2528    o start to test mnc routinely in exp0
2529    o add sea-ice loading (sIceLoad) as a new forcing field.
2530    
2531    checkpoint54b_post
2532    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2533       impressive on Altix and Opteron systems)
2534    o diagnostics can now write NetCDF files through the mnc package
2535    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2536    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2537    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2538      affects (truncation error) output of lab_sea & natl_box exp.: updated
2539    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2540    
2541    checkpoint54a_post
2542    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2543    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2544    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2545    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2546      + internal_wave (shift in writing cg2d_ini_res)
2547    checkpoint54a_pre
2548    
2549    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2550      - modified verification/lab_sea and natl_box_adjoint accordingly
2551    
2552    checkpoint54
2553    checkpoint53g_post
2554    o prepare splitting of thermodynamics: store convect.counter in common block
2555    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2556      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2557    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2558    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2559    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2560    o restore adjointability
2561    
2562    checkpoint53f_post
2563    o modifications that affect AIM experiment results (update output.txt):
2564      - no advection of S at top interface Nr (pkg/generic_advdiff)
2565      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2566    o AIM pkg:
2567      - include stability function into surf.Flux derivative relative to Tsurf
2568      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2569    
2570    checkpoint53e_post
2571    o merged cylindrical coord configuration
2572    o added rotating_tank experiment
2573    checkpoint53e_pre
2574    
2575    checkpoint53d_post
2576    o faulks upgraded: re-generate output.txt that have changed:
2577       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2578    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2579    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2580    o added Sadourny discretization of Coriolis
2581      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2582      - re-enabled use of omega3 (useAbsVorticity)
2583    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2584      vector-invariant equations
2585      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2586    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2587      hopefully without new bugs
2588      - still to do: biharmonic friction for non-hydrostatic w
2589    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2590    o regenerated output for global_ocean_ebm (using -ieee)
2591    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2592      of mom_common/
2593      - simple re-arrangement of instructions within computing loop
2594    checkpoint53d_pre
2595    
2596    checkpoint53c_post
2597    o new version of coupler for AIM+thSIce and Ocean models
2598     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2599     - land: change Evaporation of snow
2600     - aim with thSIce: fix bug in snow-precip.
2601    o changes to calc_gw.F
2602     - bug fix for w^2 term near the bottom boundary
2603     - (hopefully) improve the lateral slip boundary condtions for use with
2604        partial/looped cells
2605      - because the bug fix changes two verification experiments anyway (exp5
2606        and plume on slope), change the lateral boundary condition from half slip
2607        to the value of no_slip_sides
2608    o ebm package wasnt quite up to the parallel task. Fixed that.
2609    o Adjoint of EBM package + verification
2610      * TLM OK
2611      * ADM not sufficient accuracy yet (needs further testing)
2612    
2613    checkpoint53b_post
2614    o Commiting new energy balance model to repository
2615      * package is pkg/ebm
2616      * verif. is verification/global_ocean_ebm
2617      * references are in ebm_driver.F
2618    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2619    C        Global thermohaline circulation. Part I:
2620    C        Sensitivity to atmospheric moisture transport.
2621    C        J. Climate 12(1), 71-82
2622    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2623    C        Global thermohaline circulation. Part II:
2624    C        Sensitivity with interactive transport.
2625    C        J. Climate 12(1), 83-91
2626    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2627    C        Destabilization of the thermohaline circulation
2628    C        by atmospheric eddy transports.
2629    C        J. Climate 7(12), 1870-1882
2630    o Will need long integration testing.
2631    checkpoint53b_pre
2632    
2633    o created pkg/mom_common in preparation for variable viscosity code
2634    o renamed and split ini_mnc_io
2635    o pkg/land: only liquid water can diffuse or run-off
2636    o AIM using land: soil wetness availability account for snow
2637    o added printMapIncludesZeros to EEPARMS namelist
2638    
2639    checkpoint53a_post
2640    o restore TAMC compatiility for exf_constants.h
2641      (no usage of _d in .h)
2642    o Additional storing in KPP in an attempt to fix
2643      TAMC problem with adjoint of KPP code.
2644      (no success...)
2645      Identical code works fine with TAF.
2646    o Fixed verification/natl_box_adjoint experiments.
2647      Initial conditions for Experiments 4 and 5 are now
2648      set to "SEAICE_initialHEFF=0", which is more reasonable,
2649      and hence gives results closer to that of Experiment 2.
2650      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2651    
2652    checkpoint53
2653    o stable checkpoint with up to date adjoint
2654      TLM tests only run for 1st grdchk at the moment. Its unclear if
2655      this is a code problem or a problem with resetting code for g_
2656      variables that is being autogenerated wrong.
2657      Otherwise:
2658       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2659       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2660         are both still in chaos following their security messes.
2661    
2662    checkpoint52n_post
2663    o various build (mostly genmake2) changes including:
2664      - ability to build/run more easily within Cygwin and MacOS X
2665      - more complicated Makefiles with a stronger dependence on Gnu Make
2666    o pkg/seaice modifications
2667      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2668        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2669        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2670      - changed proxy for geostrophic velocity and updated
2671        verification/lab_sea/results/* accordingly
2672      - removed ADI dynamic solver from pkg/seaice
2673      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2674        they caused a segmentation fault under certain circumstances
2675      - removed unused field WATR
2676    o bug fix in exf-package:
2677      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2678         now reflect that.
2679    o small fixes in the cal-package:
2680      - set reference date to first of January for the 'model'-calendar
2681      - failing of cal_CheckDate in cal_FullDate now actually results in a
2682        warning
2683    o small modifications in exf-package to increase flexibility:
2684      - change climtempfreeze from a constant to a runtime parameter that
2685        is specified in data.exf_clim (default = -1.9)
2686      - introduce runtime parameter windstressmax (default = 2.0) that is
2687        specified in data.exf
2688    o fix in pkg/thsice:
2689      - update Evap (Tsf changes) to be consistent with Latent heat flux
2690      - maintain snow precipitation unchanged (even if Tsf >=0).
2691     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2692    
2693    checkpoint52m_post
2694    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2695      this does not change any of the results, because myIter=0 in swfrac always
2696      lead to jwtype=2 (the default anyway), but the call makes little sense
2697      as a default
2698    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2699    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2700      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2701    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2702    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2703    o extending useSingleCpuIO option to work with new exch2 I/O format
2704      - old-style, missing-tile I/O is still accessible by defining CPP
2705        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2706    o monitor package can write to NetCDF files and/or STDOUT
2707    o fix re-definition bug in MNC_GRID_INIT_ALL()
2708    o doc/api_reference added
2709      - a framework for building an API Reference Manual using all
2710        the "protex" comments embedded in the code
2711      - see pkg/generic_advdiff, pkg/mnc for examples
2712    o MNC:
2713      - make myThid the last argument for all subroutines
2714      - new default for the grid files: NO halos
2715      - add useMNC and other run-time flags
2716      - separate per-file-group handling of the unlimited dimension
2717      - early initialization of MNC w/ flags read at the eeboot stage
2718        and lookup tables set in initialize_fixed
2719      - write all MNC output to a freshly-created directory
2720    o thermodynamics sea-ice (thsice) is now tested with testreport.
2721    o test exp. advect_cs: use the standard cs32 grid ; update output.
2722    o Added functionality to grdchk:
2723      pick global i,j,k position (or nearest wet) where to perform check.
2724    
2725    checkpoint52l_post
2726    o new land formulation:
2727      a) use ground enthalpy as prognostic variable to ensure exact
2728         energy conservation.
2729      b) account for water temperature and for latent heat of freezing
2730         in all processes (rain, run-off, ground storage)
2731      c) compute surface and ground temperature implicitly.
2732    o aim_v23 modification for new land model:
2733      a) Treat separately land / ocean / sea-ice surface fluxes
2734         to allow implicit computation of land & sea-ice surface temp.
2735      b) add snow precipitation.
2736    checkpoint52l_pre
2737    
2738    o fix problem (when 1 tile is empty) in min/max monitor.
2739    o fix bug in timeAve (u,vZetatave in common block)
2740    o no restoring terms under ice for pkg/seaice
2741    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2742    o bug fix for pkg/seaice pickups
2743    o change MNC call locations and add coordinate attributes
2744    o mask vorticity at the corner ; affects global_ocean.cs output
2745    o fix ini_curvilinear_grid ; test CS experiments with mpi
2746    o aim.5l_cs: modify sea-ice fraction input file ; update output
2747    o exf: Adding simple range check routine for exf fields after read
2748    
2749    checkpoint52k_post
2750    o removed top-level directory "diags"
2751      - we migrated these functions to pkg/timeave a long time ago
2752    o fixed bug introduced in pkg/monitor
2753    o accuracy ctrlprec = 32 insuffient for gradient checks using
2754      averaged fields (I/O via cost_averages)
2755      -> use ctrl.h in active_file*.F to control I/O precision.
2756    o paramter list of CALL ADTHE_MAIN_LOOP
2757    o added initial do_the_model_io to ecco
2758    o set all ...Freq to zero after cost_final
2759      taveFreq, dumpFreq, pChkptFreq
2760    o MAIN and ECCO differentiability restored
2761    
2762    checkpoint52j_post
2763    o fix nchklev in tamc.h for global_ocean...
2764    o Bringing flow and store directives up-to-date
2765    o Really weird thing!
2766      call do_the_model_io from the_main_loop with parameters
2767      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2768      TAF places a faulty re-call of initialise_varia
2769      after cost_final call which should not be there!
2770    checkpoint52j_pre
2771    
2772    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2773      error messages
2774    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2775    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2776      debug output
2777    o modfied mdsio_writefield.F to handle non-global files under exch2
2778    o update AIM Cubed-Sphere exp (aim.5l_cs):
2779      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2780    o update AIM Equatorial Channel exp:
2781      use standard aim_v23 pkg and change the SST fields to be more realistic.
2782    o globalFile now works with exch2
2783    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2784      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2785    o limit timeave output for hi-res integrations
2786    
2787    checkpoint52i_post
2788    o removed CPP_EEOPTIONS.h from verification/*/code
2789    o updated the tiling for global_ocean_pressure
2790    checkpoint52i_pre
2791    
2792    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2793      the old pkg/aim).
2794    
2795    checkpoint52h_pre
2796    o shortened offending lines in exch2_send_rx?.template
2797    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2798    o genmake2: add build & execute test for NetCDF code
2799    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2800      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2801    o added useSingleCPUIO flag to monitor.F and mon_out.F
2802    o added temporary hack for sea-ice dynamics on the cube:
2803      metric terms are ignored and it is assumed that
2804      there is no sea-ice on cube faces 1, 2, 4, and 5.
2805    
2806    checkpoint52f_post
2807    o added exch2 cube routines to pkg/exch2
2808    o modified hs94.cs-32x32x5 to use it
2809    o added new grid files to hs94.cs-32x32x5
2810    checkpoint52f_pre
2811    
2812    checkpoint52e_post
2813    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2814      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2815    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2816      to work with implicit vertical advection and AB ;
2817    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2818    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2819     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2820    checkpoint52e_pre
2821    
2822    o fix bug in impldiff when Nr=1 or Nr=2.
2823    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2824    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2825    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2826      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2827    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2828    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2829    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2830    
2831    checkpoint52d_post
2832    o re-tiled many expts to allow comparison in multi-processor mode
2833      - updated output accordingly
2834      - changed hs94.128x64x5 to use intial T from file rather than use the
2835        random number generator
2836    o add infrastructure in model routines for fizhi and gridalt packages
2837    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2838    o changes to permit hi-res, cubed-sphere, configuration
2839      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2840      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2841      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2842        of surface winds for the cube
2843      (A verification experiment, based on global_ocean.cs32x15, but with
2844       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2845       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2846       complete with example surface forcing files and matlab scripts to look
2847       at the output and compare it with that of global_ocean.cs32x15.)
2848    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2849       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2850       to conform to the common rule.
2851    o check-in the first version of the coupler + interfaces for multi-components
2852       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2853       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2854       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2855       - ocean and atmos. share the same horizontal grid (no interpolation).
2856       - exchanges between component and coupler is done in forward_step
2857    o new verification experiment, cpl_aim+ocn:
2858       coupled ocean - AIM atmosphere on cs32 grid.
2859    
2860    checkpoint52d_pre
2861    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2862    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2863    
2864    checkpoint52c_post
2865    o Fixing OPTIONS files for use of exf:
2866      - ALLOW_ECCO not needed
2867      - ECCO_CPPOPTIONS.h should not be included from
2868        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2869        as has been the case in the past
2870      - All cal/exf related options are currently set in
2871        single header file. Should remain so until we
2872        agree on a consistent new policy.
2873    o Removed all CPP options for cal package.
2874      cal has no more CPP options.
2875    o modified STOREs in GAD_ADVECTION
2876    o corrected key comp. for passkey
2877    
2878    checkpoint52b_post
2879    o new version: "thsice" of thermodynamic sea-ice pkg:
2880     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2881     - modify fluxes but do not change theta directly;
2882     - light cleaning of bulk_force pkg (still needed with thsice).
2883     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2884       + output_thsice.txt to test thsice & bulk_force pkgs.
2885    o put back grid & coriolis monitor output.
2886    checkpoint52b_pre
2887    
2888    o call "do_the_model_io" at the beginning (=> dump initial state)
2889    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2890    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2891      (need info on NUMBER_OF_PTRACERS)
2892    o missing PTRACERS headers in some routines
2893    o default tamc.h in pkg/autodiff supposed to crash
2894      to ensure proper customization
2895    
2896    checkpoint52a_post
2897    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2898      - moved surfaceTendencyTice from pkg/seaice to main code
2899      - subroutine FREEZE_SURFACE now limits only surface temperature
2900        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2901        => new output.txt for global_ocean.cs32x15 & global_with_exf
2902      - keep the old version of FREEZE for backward compatibility;
2903        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2904      - corresponding modifs for TAF directives
2905    o added surface flux output variables to TIMEAVE_STATVARS
2906    o time-averaged output for pkg/ptracers
2907    o fix problem with ECCO-related divided adjoint
2908      snapshot file was missing some ad-variables,
2909      but no warning issued by TAF
2910    
2911    checkpoint52a_pre
2912    o some bug fixes for #undef REAL4_IS_SLOW
2913    
2914    checkpoint52 = ecco_c52_e35
2915    o after testing adjoints of checkpoint51u_post
2916    
2917    checkpoint51u_post
2918    o this is the post-merge tag of the ecco-branch
2919      (needs another clean checkout and re-testing)
2920    o various natl_box_adjoint configs and results
2921      but no input fields
2922    o obcs adjoint not yet merged!
2923    o adding ECCO global 1x1 and 2x2 degree configs
2924    o updated/extended some store directives for seaice
2925    o pkg/ecco now containes ecco-specific part of cost function
2926    o top level routines the_main_loop, forward_step
2927      supersede those in model/src/
2928      previous input data.cost now in data.ecco
2929      (new namelist ecco_cost_nml)
2930    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2931    
2932    checkpoint51t_post
2933    o this is the pre-merge tag of the ecco-branch
2934    
2935    checkpoint51s_post
2936    o cleanup: removed various obsolete #define-s
2937    o pkg/grdchk
2938      - renamed 'ph-grd 3' to 'grad-res'
2939      - merged from ecco-branch
2940        (remaining bug fixes for obcs gradient checks)
2941      - additional high-precision output for testreport
2942        (grep for 'precision_grdchk_result')
2943    
2944    checkpoint51r_post
2945    o cleaned up or removed CPP_OPTIONS.h files
2946    o updated results for some of the tests to reflect the new
2947      optfiles (-ieee: -O0 instead of -O3)
2948    
2949    checkpoint51q_post
2950    o cd_code:
2951      - moved cd_scheme.F -> cd_code_scheme.F
2952      - separate read_checkpoint from cd_code_ini_vars.F
2953      - separated cd_code part from write_checkpoint
2954      - updated AD_SOURCE, generated .flow
2955      - added CD_CODE_VARS.h to the_main_loop
2956      - Moving cd_code specific store dir.s to pkg/cd_code
2957    o ctrl package totally restructured
2958      - pack/unpack now optional and decoupled from
2959        xx_/adxx_ I/O
2960      - ctrl_pack/unpack cleaned
2961        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2962      - confined inclusion of AD_CONFIG.h to where necessary.
2963    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2964    
2965    checkpoint51p_post
2966    o create initial cd_code package
2967      - WARNING: the initialization of fields within packages
2968        is broken because INI_FIELDS (where READ_CHECKPOINT is
2969        called) is called *before* PACKAGES_INIT_VARIABLES.
2970        This seems to be backwards since
2971        1) its important to initially zero the entire field including
2972           the "halo" region
2973        2) zeroing needs to be done *before* reading pickup info
2974           and the pickup call might or might not happen in any
2975           particular run
2976      - this needs an overhaul for R2
2977    o cleanup verification/*/code/GMREDI_OPTIONS.h
2978    o cleanup testreport
2979    
2980    checkpoint51o_post
2981    o bringing AD-related verif's up to date with genmake2
2982      - carbon/
2983      - global_ocean.90x40x15/
2984      - hs.94.1x64x5/
2985      - (front_relax/ )
2986    o (more) consistent directory structure for AD-related verif.'s
2987    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2988    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2989    o bug fix in find_alpha.F for MDJWF:
2990      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2991        change rho -> rho-rhoConst
2992      - replace call find_rho to find_rhonum
2993    o initialisation of rFlx extended to full array (required by TAF)
2994      and shifted to thermodynamics
2995    o removed PTRACERS.h in ptracers routine
2996    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2997    o Correcting initialisations for fVerU, fVerV.
2998    o helping TAF to recognize dependency on kUp for
2999      fVerU, fVerV
3000    o Replacing delZ by delR in pkg/ctrl/
3001    checkpoint51o_pre
3002    
3003    o undid all of cp51 pending some cleanups and discussion
3004    o added the [#include "AD_CONFIG.h"] statement to all files that need
3005       it for adjoint/tl #defines
3006     o re-worked the build logic in genmake2 to support AD_CONFIG.h
3007     o removed tools/genmake since it no longer works
3008    
3009    checkpoint51n_post
3010    o modifications to make FREEZE flux visible to pkg/kpp
3011      - moved surfaceTendencyTice from pkg/seaice to main code
3012      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
3013      - subroutine FREEZE now limits only surface temperature
3014        (this means new output.txt for global_ocean.90x40x15,
3015         global_ocean.cs32x15, and global_with_exf)
3016    o added surface flux output variables to TIMEAVE_STATVARS
3017    
3018    checkpoint51n_pre
3019  o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F  o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
3020    o added [#include "AD_CONFIG.h"] to all files that use the following
3021      defines:
3022      - ALLOW_ADJOINT_RUN
3023      - ALLOW_TANGENTLINEAR_RUN
3024      - ALLOW_ECCO_OPTIMIZATION
3025    
3026  checkpoint51m_post  checkpoint51m_post
3027  o incorporating changes to get TAMC/TAF working in genmake2  o incorporating changes to get TAMC/TAF working in genmake2

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