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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.1065 by heimbach, Fri Feb 13 15:05:19 2009 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o adding precip control xx_precip  o pkg/autodiff, pkg/ctrl:
8  o moved ptracer ctrl index 17 -> 32    Add flag to reduce all tapelev I/O to single-prec.
9      In data.ctrl set
10        doSinglePrecTapelev = .TRUE.
11    o model/src/ini_curvilinear_grid.F: check in hack for SX8 compiler
12      to make sure that recip_dxV and recip_dyU are never zero, until we
13      have a proper exchange for them. Most compilers do not seem
14      to mind divisions by zero in the overlaps, as long as the results are
15      not used anywhere, but sxf90 does.
16    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
17      real fresh water flux (not yet)
18    o pkg/mdsio & rw:
19     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
20     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
21    o pkg/flt:
22     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
23       init_fixed & ini_varia.
24     - clean-up & simplify linear interpolation S/R:
25       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
26     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
27     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
28     - add vert. coordinate & horiz. indices to output files.
29     - change vertical position in initial condition, from index to depth [m].
30     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
31       (easier to get to a curvilinear grid) ; delX,delY no longer used.
32    o pkg/ggl90: a few modifications:
33     - fix bottom boundary condition, and interpolation of KappaE
34       near top and bottom
35     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
36     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
37     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
38    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
39      (maintain temporary backward compatibility, until next checkpoint)
40    
41    checkpoint61h
42    o pkg/diagnostics with "periodic averaging diagnostics":
43      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
44    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
45    o pkg/obcs: fix loop ranges for balancing code
46    o pkg/flt:
47     - improve criteria for finding which tile owns a float.
48     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
49    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
50      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
51      with ocean biogeo)
52    o pkg/flt:
53     - do some cleaning and fix the restart ;
54     - add output.txt in flt_example/results to get this pkg tested.
55    o genmake2: add an EXTENDED_SRC option and flag.
56       for now, cannot be turned on on command line (only through genmake_local)
57    o pkg/mdsio: read/write vector:
58     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
59     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
60       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
61     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
62      (drop to 4 digits matching for grad). But this test does not look very
63      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
64    
65    checkpoint61g
66    o pkg/flt:
67      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
68       + make OPTIONS file more standard.
69      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
70      - fix _BYTESWAPIO CPP-Flag
71      - standard reading of file-parameter "data.flt"
72      - fix argument list of S/R FLT_RESTART
73      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
74    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
75    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
76      a still unfixed compiler/optimization bug
77    
78    checkpoint61f
79    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
80      update results of global_ocean.cs32x15.icedyn test.
81    o move getcon.F from model/src to pkg/fizhi.
82    o pkg/exf: add parameter for extrapolation of temp up to the surface
83       and option to prevent negative evap (in bulk_largeyeager04 only).
84    o Prather Advection scheme: fix tracer conservation for divergent flow
85      (e.g., when using NonLin Free-Surface).
86    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
87    o gmredi (Visbeck-variable-K):
88     - add more parameters to Visbeck-variable-K.
89     - use a 5 points average for dSigmaR in Visbeck-K calculation
90       (more "homogenous": same stencil and same weights as in dSigmaH)
91     - update output of ideal_2D_oce experiment.
92    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
93      (#undef REAL4_IS_SLOW)
94     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
95       coordinate variable
96     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
97       (surface forcing fields), removes some of the functionality
98     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
99     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
100       probably not all: copy _RS surface flux fields to RL field before
101       calling DIAGNOSTICS_FILL
102     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
103       real*4 (CALL EXCH_*_RS) versions.
104     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
105       (generate new output).
106    
107    checkpoint61e
108    o gmredi (Visbeck-variable-K):
109      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
110      - change computation of Visbeck-K where Slope > Smax :        
111        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
112        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
113    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
114      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
115    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
116    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
117      does not become too large (to avoid precision problems in implicit-diffusion
118      solver); update ideal_2D_oce output.
119    o pkg ggl90:
120      - in ggl90_cal.F: compute only one set of visc/diff, used to
121        step forward TKE/T/S/momentum
122      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
123        have Prandlt =1)
124    o gmredi (fm07):
125      - add lower limit on Transition layer thickness + lower limit on 1/lambda
126      - allow to set few more params from data.gmredi
127    o pkg ggl90:
128          - add missing sqrt(2) factor in computation of mixing length
129            scale in ggl90_calc.F
130            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
131    
132    checkpoint61d
133    o adjoint modifs
134      - adapt to new field rhoInSitu
135      - allow to revert from StoreDynVars2D, StoreDynVars3D
136        to individual fields
137        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
138    o store 3-D (in-situ) density in commom block (DYNVARS.h)
139     - save 1 rho computation.
140     - no longer modify T & S inland when using down_slope pkg.
141    o gad_som : allow to switch to SOM advection for T & S without corresponding
142      pickup files (using new S/R: MDS_CHECK4FILE).
143    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
144      (for useSingleCpuIO to work in multi-threaded)
145    o pkg/shelfice:
146     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
147       with SHELFICEtopoFile in data.shelfice
148     - move code for reading ice shelf topography and modifying hFacC into separate
149       subroutines of the shelfice package
150     - separate initialisation of "fixed" and "variable" variables
151     - kTopC is not (yet) replaced by kSurfC, although this is possible
152    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
153    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
154      and rename:
155      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
156      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
157    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
158    
159    checkpoint61c
160    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
161      to add mass source/sink of fluid in the interior (3-D generalisation
162      of oceanic real-fresh water flux).
163    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
164    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
165    o new pkg: down_slope
166      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
167      - presently, modify T & S inland (dwnslp_calc_rho.F).
168        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
169      - implementation for ocean in P-coords not tested.
170      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
171    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
172      (to facilitate conversion of oceanic pkg to p-coordinate).
173    o change FIND_RHO to FIND_RHO_2D :
174      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
175    o new pkg: cheapaml
176    
177    checkpoint61b
178    o exch2:
179      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
180      - no longer depend on the order sequence (N,S,E,W).
181      - 3rd exchange no longer needed (tested with 24 tiles).
182      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
183      - exch_UV_A-grid readily available (but not yet tested).
184      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
185      (both are no longer needed) in exch_uv: no effect in forward run; but
186       get truncation error differences with adjoint exch.
187    o exch2:
188     - change index-bounds storage (moved from target to local tile,
189       more intuitive this way) ; rename/remove some variables.
190     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
191    
192    checkpoint61a
193    o exch2/matlab-topology-generator:
194      fix bug in index bounds for N-S internal exchange (hard to tell if this
195      had any effect on the solution).
196    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
197      is exceeded
198    o testreport: modify syntax of awk, so that it works also with
199      awk, and not only with nawk and gawk
200    
201    checkpoint61
202    o autodiff
203      Change default for TAF usage by removing argument '-nonew_arg'
204      This changes TAF subroutine argument list (ordering of active var.)
205      Omission of this flag leads to incompatibility w.r.t. TAMC
206      To restore TAMC-compatibility, need following modifs:
207      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
208      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
209      Tested TAF version is 1.9.22
210      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
211    
212    checkpoint60
213    --->>> This is the last checkpoint for which generating the adjoint
214    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
215    --->>> by default.
216    --->>> Future checkpoints will ommit this flag by default.
217    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
218    o pkg/grdchk: Add gradient check to etan0 perturbations.
219    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
220    o pkg/autodiff: more flexibility in zeroadj.
221      model/src: modifying do_oceanic_phys.F accordingly.
222    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
223    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
224      special setup of gmredi for which the adjoint is stable
225      enough for parameter optimization.
226    o bridging the gap between eddy stress and GM.
227      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
228          along with a change in CPP option (now ALLOW_EDDYPSI).
229      -> when using GM w/ GM_AdvForm:
230          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
231          is applied either in the tracer Eq. or in momentum Eq.
232          depending on data.gmredi (intro. GM_InMomAsStress).
233      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
234      The key modifications are in model/src/taueddy_external_forcing.F
235      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
236    
237    checkpoint59r
238    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
239      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
240      fix option to read coriolis(@ cell-corner) from files with CS-grid.
241    o pkg/mnc: add some attributes to standard 1D-coordinate variables
242    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
243      mass points, when using mnc for output
244      - add runtime parameter (missing_value, missing_value_int) to override
245        default (which is the value of getcon('UNDEF'))
246    o pkg/mnc: prepare mnc for the actual use of missing values with the
247      diagnostics package: small fix in mnc_cw_readwrite.template and more
248      initialisation of never used fields
249      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
250      versions
251    o pkg/thsice/thsice_ini_vars.F added default initial values so that
252      thermodynamics sea ice solver does not blow up when some initial fields
253      are missing.
254    o move from external_forcing_surf.F to ini_forcing.F
255      the p-coord. hack consisting in using pLoad to set phi0surf ;
256      update output of tutorial_global_oce_in_p (affected @ truncation level).
257    o Freshen up a bit hs94.1x64x5, notably:
258      remove rotationPeriod and tRef=5*0. (adjoint only), and add
259      exactConserv=.TRUE.
260    o pkg/generic_advdiff:
261      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
262      applies to files where Temperature & Salinity 2nd Order moments are used.
263    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
264      this uses a dynamically allocated internal state data structure
265      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
266      and requires a fortran 90 compiler
267    
268    checkpoint59q
269    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
270       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
271    o Refresh tutorial_global_oce_biogeo, notably:
272      - change bathymetry (put back seamounts in ACC, use hFacs)
273      - change EOS (POLY3 --> JMD95Z)
274      - use Bryan-Lewis vertical diffusivity
275      - use multidimensional advection
276      - remove old virtual virtual in dic pkg, now done through ptracer pkg
277      - change a couple of parameters in dic pkg
278    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
279    o pkg/obcs: change default to OBCSfixTopo = .true.,
280      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
281      - replace "debugMode" with "debugLevel .GE. debLevB"
282    o implementation of TAF directives for gchem,cfc,dic
283    o remove "exp5" (replaced by tutorial_deep_convection).
284    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
285      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
286      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
287      --> changes results in exp4, seaice_obcs
288    o tutorial_deep_convection :
289      update the set-up and increase resolution and domain size ; start
290      from pseudo initial conditions = output at t=120mn in order to see
291      something happening when running testreport.
292    o pkg/seaice: add os7mp as an advection scheme
293                  add check for advection schemes
294                  add a flag for restoring T and S underneath sea ice
295    o pkg/my82: add netcdf-support and diagnostics
296    o thsice pkg:
297      - Now hsMax limits snow height by turning it into ice following
298        flooding scheme (and now conserving energy)
299      - Slight rewriting of the formula in thsice_calc_thick.F
300      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
301      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
302    
303    checkpoint59p
304    o gchem / dic / cfc :
305      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
306      - add new parameter files: "data.dic" & "data.cfc" ;
307      - various re-arrangement in initialisation & header file ;
308      - fix tutorial_global_oce_biogeo for multi-threaded test.
309    o pkg/dic: test for "pickup_dic" file when restarting ;
310      if no pickup-file, can restart with a re-initialised pH (same as it did
311      before) providing pickupStrictlyMatch is set to False.
312    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
313      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
314    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
315      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
316    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
317     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
318       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
319    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
320       scheme to use for vorticty-term ;
321     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
322       (with default selectVortScheme, return to original discretisation)
323     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
324    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
325    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
326      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
327      also fix diagnostics VISCAHW & VISCA4W.
328    
329    checkpoint59o
330    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
331    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
332      move a few statemens out the main loop into separate loops
333    o pkg/shelfice:
334      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
335        (kg/m^2/s), does not break tests, because in verification/isomip,
336        rhoConstFresh=rhoConst (by accident)
337      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
338      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
339        new file model/src/seawater.F, so that they are available for all pkgs.
340      - convert potential temperature into in-situ temperature. This changes the
341        isomip tests => update tests
342    o add a flag writePickupAtEnd (default=true) to be able to suppress
343      writing a pickup at the last timestep
344    o tools/mpack-1.6 :
345      - disable automake (not working) and autoconf (not needed).
346      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
347        also cleaner with much less compilation warnings.
348    o pkg/profiles:
349      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
350      (for "less than 32 characters name" compiler requirement)
351    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
352      conditions that have a different sampling frequency than S/T/U/V obcs
353    o pkg/diagnostics (stats-diags):
354      - fix global Min/Max in case 1 processor get only empty tiles
355    o genmake2: replace (4 times)
356         make genmake_tc_1.o >> genmake_warnings 2>&1
357      with
358         COMM="$CC $CFLAGS -c genmake_tc_1.c"
359         echo $COMM >> genmake_warnings
360         $COMM >> genmake_warnings 2>&1
361      to make genmake2 always see the value of CC as specified in the optfile.
362    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
363      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
364      - modify verification advect_cs test to test SOM-advection on CS-grid.
365    o pkg/ctrl:
366      - Rewrite of ctrl_map_ini_ecco.F,
367        introducing a generic routine (ctrl_map_ini_gen.F).
368      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
369    
370    checkpoint59n
371    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
372      number in dedicate array "hdiag":
373      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
374        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
375      - many small changes (integer format) for large number of diagnostics
376      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
377        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
378    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
379      usingSphericalGrid, this allows to define the rotated grid coordinates
380      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
381      geographical coordinates according to the inverse of the rotation defined
382      by the Euler angles, so that Coriolis parameter and online-interpolation by
383      exf works with the geographical coordinates on XC/YC/XG/YG.
384      Naturally, this feature does not work with all packages, so some
385      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
386      profiles), because there the coordinates are assumed to be regular
387      spherical grid coordinates.
388    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
389      - introduce isopycnal diffusion coefficient control.
390    o tools/adjoint_options:
391      - additional control vector components.
392    o pkg/mnc: have mnc create marginally meaning full coordinate variables
393      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
394    o pkg/mypackage:
395      - add example of read/write pickup for state-var ;
396      - add entry points to the main code for state-vars diags & write-pickup.
397    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
398      transitions for useExfYearlyFields
399      - add new subroutine that determines the file to read from for
400        use*YearlyFields = .TRUE. and .FALSE.
401      - add a verification experiment to global_with_exf that tests
402        useExfYearlyFields with USE_EXF_INTERPOLATION defined
403    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
404      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
405      subroutines (which could be generated from a template, because they are
406      almost identical), for now they are included in obcs_prescribe_read.F for
407      simplicity
408    o pkg/exf:
409      - add a little more diagnostic to exf_interp_read (in analogy to
410        mds_read_field, can be turned off with debugLevel < debugLevA=1)
411      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
412        ugly but fast by unrolling short inner loops, inserting a unroll=8
413        directive in routine lagran, and splitting a loop and making do while the
414        outermost loop (the latter requires the intoduction of index arrays)
415    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
416    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
417      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
418    o verification/seaice_obcs: updated for restart test and latest options
419    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
420      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
421      for now this is only available for the C-grid code and also within
422      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
423    
424    checkpoint59m
425    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
426      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
427    o gad_som : fix flux output (& diagnostics) to have same units as other  
428      advection scheme fluxes (was previously multiplied by deltaT).  
429    o added verification/seaice_obcs both to test seaice open boundaries
430      and to provide an example matlab scrpt for generating them
431    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
432    o pkg/salt_plume: clean up salt_plume_frac.F to
433      remove redundancy in PlumeMethod 1 and 4
434    o pkg/kpp: added saltplume diagnostics
435    o pkg/obcs and pkg/seaice:
436      - do not set uice and vice to zero when OB*icefile are unspecified
437      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
438      - moved seaice tracer obcs after call to seaice_growth
439    o pkg/salt_plume: added various options for salt plume depth
440      criterion and for vertical distribution of the salt
441    
442    checkpoint59l
443    o pkg/ptracers: new version of ptracers pickup:
444      read meta file and write only fields which are needed to restart.
445      ( same logic as main pickup file ; also using pickupStrictlyMatch )
446    o pkg/seaice:
447      - add timescale for melting due to warm mixed layer as a means of
448        setting SEAICE_availHeatFrac more conveniently
449      - add a CPP-flag/runtime parameter check for flooding algorithm
450      - reformulated availHeat in seaice_growth.F to be independent of AREA
451    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
452      unit changes
453    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
454    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
455      SX vector computer.
456    o pkg/seaice:
457      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
458        seaice forcing fields can now be read only through pkg/exf
459      - removed some unused halos
460    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
461    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
462      or U/VICE from U/VWIND before computing U/VSTRESS
463    
464    checkpoint59k
465    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
466      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
467    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
468      all experiments pass when compile with un-initialised var. checking option.
469    o added pkg/salt_plume
470    o script to test restart (for now, in MITgcm_contrib/jmc_script)
471    o pkg/seaice: new read/write pickup version.
472      read meta file and write only fields which are needed to restart.
473      ( same logic as main pickup file ; also using pickupStrictlyMatch )
474    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
475    o lab_sea.hb87: modify the domain & update output.hb87.txt :
476      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
477      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
478      process. Fixed here by closing the domain at the Northern boundary.
479    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
480    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
481      a set of consecutive levels in/from a 3-D array.
482    o pkg/ptracers:
483      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
484      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
485    
486    checkpoint59j
487    o in pkgs: dic, obcs, offline, rbcs:
488      standard way to compute coeff. for time interpolation between 2 time reccords
489      which retains full precision (& make results less dependent on compiler).
490      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
491    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
492      packages instead of reading ice cover and wind speed separately
493    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
494     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
495      to allow to compile customized code before the update)
496    o cleaning-up:
497      - fix CPP instruction syntax in pkg/obcs
498      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
499        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
500      - fix some threads issue in IO parts.
501    o pkg/dic:
502      - add tons of "_d 0" (--> much better testreports !)
503       and then update outputs of tutorial_global_oce_biogeo
504    o pkg/mom_fluxform:
505      add a special version of momentum advection intended to conserve momentum
506      next to a bathymetry step or a coastline edge. (default = off = #undef)
507    o new read/write pickup version:
508      - for now, only implemented for main (mdsio) pickup file.
509      - write out only what is needed to restart; merge pickup_nh , pickup_ph
510        and main pickup together.
511      - read meta file; read only what is needed to restart; stop if a field
512        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
513        if it make sense (even if the restart is not perfect).
514      - if no meta file, assume that pickup to read corresponds exactly to
515        a pickup that would currently be written.
516      - read pickup written in the old format (until checkpoint59i) if it
517        recognizes an old meta file (no field-list).
518      - add a meta file in exp. which starts from a pickup: 2 cases:
519        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
520         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
521        b) a meta file describing the content of the associated pickup file
522         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
523    o pkg/mdsio & pkg/rw:
524      - new routine to read a meta file ; new set of routine to read
525        Multiple-fields file (with meta file).
526    o added open boundary conditions capability for seaice
527        HSNOW, HSALT, UICE, and VICE
528    
529    checkpoint59i
530    o adjoint:
531      * fix multiDimAdvection adjoint
532        (partial recomputation problem by TAF for fVerT(:,:,kDown)
533        and comlev1 size definition (maxpass vs. max. number of tracers)
534      * verification/global_ocean.90x45x15 adjoint now tests
535        NLFS and multiDimAdvection using DST3 (=30)
536      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
537    o pkg/kpp: add "_d 0" to real constant (if missing);
538      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
539      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
540    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
541      for internal parameters related to restart process (formerly from PARAMS.h)
542      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
543    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
544      as argument. (only atm2d & obcs write_pickup have not yet been updated)
545    o pkg/monitor:
546      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
547      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
548      - account for deep Atmosphere factor and density factor (anelastic)
549    o added open boundary conditions capability for seaice HEFF and AREA
550    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
551      thermodynamics
552      - requires a little reorganization, which affects the testreport results
553        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
554        so that now the conservative form is tested
555      - add a few comments
556    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
557    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
558    o add new diagnostics to seaice: advective, diffusive fluxes (only for
559      multidim-advection, for scheme 2 they are not filled) and transports,
560      thermodynamic growth rates
561    o change units of EmPmR (inside the code, + within coupling interface)
562      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
563      Affects results @ truncation level (cg2d match) and update output of
564       experiments: lab_sea(6), global_ocean.90x40x15(10),
565      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
566      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
567      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
568      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
569    
570    checkpoint59h
571    o pkg/exf:
572      - improve vectorization by moving if-statement out of loops in
573        exf_mapfields, exf_radiation
574      - exf_bulkformulae.F: introduce 2D fields and vectorize code
575    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
576    o testreport:
577      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
578        monitor & update offline_exf_seaice exp. output.
579      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
580    o pkg/seaice:
581      - bug fix in the evp solver: boundary conditions were affected be
582        masking of zMax/zMin (changes results)
583      - minor bug fix in boundary conditions in seaice_calc_strainrates
584        (changes results for no_slip)
585      - seaice_lsr.F: make interpolation of eta dependent on boundaries
586      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
587      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
588        stress formulation and no-slip boundary conditions
589    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
590      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
591    o pkg/seaice: a first HSALT time stepping equation has been checked in
592    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
593      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
594      without requiring DO-IF statements
595    o pkg/thsice:
596      use continuous power-law function for partition of energy between lateral
597      melting/freezing and thinning/thickening ; old code using step function
598      still available with #undef THSICE_FRACEN_POWERLAW
599      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
600    o testreport: change AD testing : check against results/output_adm.txt
601      using same scripts as for forward test.
602    
603    checkpoint59g
604    o adjoint testing: in preparation for changing testreport:
605      - output format: cost and grad written on separated lines
606      - ad output results in directory "results" (instead of "results_ad")
607    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
608    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
609    o pkg/ecco: allow user defined cost function contributions
610    o testreport:
611      Allow to choose (per experiment) the list of tested output variables
612       and the main variable (used to issue a pass/FAIL ) ;
613      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
614      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
615      Also modify printing of summary:
616       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
617       b) echo the list of tested variables in the individual summary.txt of
618          each experiment.
619    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
620      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
621      (but still depend on the tile decompostion of the domain).
622    o pkg/seaice: change a discretization detail to make the B-grid code
623      "more symmetric". This change is likely to remove all "ridges/leads" that
624      where quasi-aligned with the grid in B-grid solutions. It may also be
625      the solution to the stress coupling issues with the B-grid.
626    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
627      remove .cvsignore from input dir. (since testreport no longer run here).
628    o pkg/thsice:
629     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
630     - fix reshaping of sea-ice just after advection:
631       melt all the ice only if ice-volume is too small.
632     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
633       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
634     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
635    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
636      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
637    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
638      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
639      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
640      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
641      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
642      -> update output.txt
643    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
644     this affects truncation error: -> update output.txt of exp:
645      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
646      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
647    
648    checkpoint59f
649    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
650    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
651      a bounded range (in forward mode)
652    o pkg/ecco, ctrl, autodiff and mom_common:
653     internal parameter controls, completements of implementations
654    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
655    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
656      (not seem any difference in testing results).
657    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
658       at face corners.
659    o pkg/generic_advdiff:
660     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
661      loop range indices for computing vertical advection tendency
662      and do the calculation in the interior only (no overlap) ;
663      for now, only implemented for SOM advection (to save CPU time).
664     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
665    o exch2 adjoint
666      First set of changes:
667      - add exch2 hand-written adjoint templates
668      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
669        This will require cleanup in pkg/autodiff/*.F
670        (changed routines currently kept separate in verif. code/)
671      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
672        that used to hide exch2 or cubed-sphere specific code
673        (commented via 'cph-exch2')
674    o pkg/seaice
675      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
676    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
677       output of global_ocean.cs32x15.thsice .
678    
679    checkpoint59e
680    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
681      for B-grid vector (not yet tested) and C-grid vector (<- only used
682      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
683    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
684      (#ifdef ALLOW_SALT_PLUME)
685    o gather_2d/scatter_2d: removed halo regions
686    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
687      scheme and the corresponding test case (under front_relax dir). For now,
688      only available with Skew-flux form and not yet tested in realistic set-up.
689      adjoint: store directives updated, but gradient checks deteriorated,
690      so maybe GM/Redi adjoint is now broken.
691    o seaice adjoint
692      * add AREA, HEFF, HSNOW as control variable
693        (should not change lab_sea results)
694      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
695    o pkg/seaice:
696      * added computation of saltFlux in seaice_growth;
697        For time being, sea ice salinity is assumed constant
698        contribution of snow flooding to freshening of sea ice is neglected.
699        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
700        defaults to 0.0 in order to maintain backward compatibility.
701        Typical values for SEAICE_salinity are 4 to 10 g/kg.
702      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
703      * added SEAICE_availHeatFrac, which specifies fraction of surface level
704        heat content used to melt or grow ice
705      * commented out cap of HICE: it helps keep ice thinner
706      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
707      * applied OBCS T/S mask to HEFFM sea ice mask
708    
709    checkpoint59d
710    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
711     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
712     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
713    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
714     and change default value of parameter "GM_Small_Number";
715     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
716       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
717       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
718    o pkg/ecco: cost function when applying pkg/smooth to controls
719    o pkg/ctrl: add forcingPrecond run time parameter
720    o pkg/seaice:
721     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
722     - fix bug in metric terms of u-equation in LSR solver (implicit part),
723       changes verification/lab_sea
724     - rearrange implicit part of u-equation in LSR solver to make it easier to
725       read, understand, and debug. This causes changes at the truncation level.
726     - fix (serious) bug in the boundary conditions (sign error in the implicit
727       part) of the LSR solver. Changes all LSR results.
728     - fixed problem with HSNOW initialization to avoid thick snow when AREA
729       is initilized with small values - does not change lab_sea results.
730     - added HsnowFile initialization capability
731    o pkg/smooth: addition to model/src and pkg/ctrl so allow
732     initialization of pkg/smooth and application to control vector
733    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
734    o dependencies: pkg/profiles requires pkg/cal
735    o pkg/profiles:
736     - added option ALLOW_PROFILES_GENERICGRID
737         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
738         that interpolation information (grid points and coefficients) is provided
739         within the netcdf input files.
740         -> sample matlab scripts can be found in MITgcm_contrib/gael
741         that allow you to prepare netcdf input files.
742     - also modified: cleaner include statements, cleaner error print statements,
743       cleaner stops when error, and more tests of the netcdf input files consistency.
744    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
745    o pkg/seaice:
746     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
747       requires a new routine: seaice_diagnostics_fill.F
748     - make sure that seaice does not move if not forced (pressure replacement
749       method, Hibler and Ip, 1995), changes results
750     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
751     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
752       It is turned off by default (=-1.), because it changes the results.
753     - make it possible to read AREA from a file, too.
754    
755    checkpoint59c
756    o add S/R and diagnostics for oceanic mixed-layer depth
757    o move GMRedi call after all vertical mixing schemes (including KPP)
758    o pkg/thsice:
759     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
760      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
761    o pkg/obcs:
762     - bug fix for balance code
763    o pkg/seaice:
764      - allow values of SEAICE_elasticParm > 1
765      - add new parameter SEAICE_evpTauRelax as an alternative
766        to SEAICE_elasticParm
767      - make lsr boundary conditions free slip (by default), changes result
768      - add code for no slip boundary conditions for lsr
769      - set minimum of zeta to zero (and not 4e8) (changes results)
770      - add a cap on AREA after advecting AREA if seaice_growth is not called
771    o change calculation of Visbeck K:
772      - no longer depend on tapering scheme; instead, compute slope (limited
773        by GM_maxSlope). this is equivalent to what was comuted before with
774        clipping or linear tappering.
775      - fix vertical averaging (wrong by 1/2 level)
776      - leave the old version (but will not be maintained) within
777        #ifdef OLD_VISBECK_CALC / #endif
778      - update output of exp. ideal_2D_oce
779    o change error catch in calc_r_star to improve vectorization
780    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
781      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
782    o adjoint:
783      Re-organized adjoint checkpointing according to Matt Mazloff
784      (but with modifs/completions/cleanups)
785      Storing is now bundled into large arrays to optimized I/O
786      (and second step in cleanup of the_main_loop)
787    
788    checkpoint59b
789    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
790      - export/import (between ocean & coupler) fields needed for ocean DIC.
791    o pkg/seaice:
792      - get rid of three more exchanges seaice_calc_viscosities (required
793        different loop boundaries in seaice_lsr and seaice_ocean_stress)
794      - bug fix in seaice_ocean_stress (update of lab_sea required)
795      - reduce loop boundaries to necessary minimum also in seaice_evp
796      - go back to the old way of computing deltaC/Z as the adjoint likes that
797        better
798    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
799      passive tracer to an Age Tracer) + update output.txt
800    o pkg/exf:
801      - implement A-grid / C-grid selection for wind-stress input files.
802      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
803      for now, in exf_bulk_largeyeager04.F only :
804      - change implementation for case where windspeed + 2. components wind-stress
805        are read-in. AND use rhoConstFresh to convert evap.
806    o pkg/seaice:
807      - use correct EXCH_UV for wind-forcing (on A-grid).
808      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
809        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
810    o pkg/exf:
811      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
812      EXF_INTERPOLATION:
813      - merge global_with_exf/code version of exf_interp_read.F
814        to the main code ;
815      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
816        reading the file ; Important: This options needs to be defined to recover
817        previous code.
818        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
819      - no longer loose real*8 precision along the way when using exf_iprec=64.
820    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
821      - change discretisation of evp-solver in order to avoid another exchange
822        (changes lab_sea) and clean up a little
823      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
824        help the adjoint (this also changes the results slightly)
825      - add a few "_d 0" where they had been missing in seaice_evp.F
826      - cleaning up: remove unused seaice_calc_rhs.F
827    o pkg/exf: some cleaning-up:
828      - change various "constants" into runtime parameters
829      - cleaned-up Large&Yeager04 routine which should eventually
830        replace exf_bulkformulae.F (changed names of S/R and CPP)
831        and merged various ALLOW_ATM_WIND options
832     only used with thsice pkg (in thsice_get_exf.F):
833      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
834        which are used when useStabilityFct_overIce=TRUE (= the default)
835      - change default values of ice & snow emissivity and scale downward LW
836        by ice & snow emissivity.
837    o pkg/thsice:
838     fix few little problems, in thsice_calc_thickn.F:
839      - growth vertically (and not laterally) if iceFrac == iceMaskMax
840      - melt only laterally if hIce < hThinIce (as the comments say)
841      and in thsice_extend.F:
842      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
843      - start to form ice as soon as the minimum ice-volume is reachable.
844     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
845      and cpl_aim+ocn
846    o pkg/kpp
847     - move computation of surface related input fields to KPP into a new
848       subroutine kpp_forcing_surf.F
849     - remove wrong (within bi,bj loops) EXCH calls.
850     - little cleaning (add argument myThid in last position, cvs header ...)
851     - for now, fix conservation problem by exchanging KPPviscAz (may not
852       be the best fix)
853    o pkg/seaice
854     - check for inconsistent evp parameter/cpp-flag combination
855     - remove leftover errIO flat for obsolete name list error handling
856    o OpenAD
857     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
858    
859    checkpoint59a
860    o pkg/seaice: some parameter clarifications and a little bit of clean up
861    o pkg/thsice: rename run-time parameters:
862       himin       -> hIceMin
863       himin0      -> hThinIce
864       hihig       -> hThickIce
865       i0          -> i0swFrac
866       transCoef   -> bMeltCoef
867       frac_energy -> fracMelting
868      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
869       with default values (for now) that do not change the results.
870      remove old version of thsice vars advection in pkg/seaice.
871    o in FFIELDS.h:
872      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
873      - make pLoad & sIceLoad always available (but still only used if
874         ATMOSPHERIC_LOADING is #define).
875    o pkg/kpp: replaced _KPP_RL with _RL
876    o bug fixes for vertical diffusivity computations when both KPP and
877        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
878        are no longer updating the vertical diffusivity array
879        (passed as argument) but are (re-) setting those arrays.
880    o pkg/seaice: fix bug in evp solver, while doing that
881      - change (improve?) discretization of stress computations for both
882        cgrid-lsr and evp solver
883      - add a new routine to compute strain rates
884      - the above changes lab_sea results
885      - add no slip conditions for evp solver (off by default), lsr-version
886        may follow
887      - fix exchange for shear at Z-points (does not change lab_sea)
888      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
889        (to force the user to pick a time step since there is not "safe" way
890        of choosing it)
891      - add principal stress diagnostics
892      - rearrange fields for evp a little to avoid having to call a: too many
893        exchanges and b: exchanges for stress trensor components which we do
894        not have.
895      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
896        of evp, complete rewrite for lsr case (latter is does not yet work
897        in all cases)
898    o pkg/kpp: add code to have mixing in shelf ice caverns
899      - add myThid to all kpp routines (long overdue)
900    
901    checkpoint59
902    o pkg/exf:
903      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
904        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
905      - move exf header files from lower_case.h to UPPER_CASE.h ;
906        add missing cvs Header & Name
907      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
908      - add namelist param. selectStressGridPosition, exf_monFreq
909      - retire many _CLIM routines, and remove data.exf_clim
910        + params moved to data.exf
911        + climsst, climsss now handled by exf_set_gen, i.e.
912          climss?period=0 refers to constant field,
913          climss?period=-12 to monthly forcing
914      - split up namelists in data.exf
915    o pkg/seaice:
916      - remove seaice_exch and seaice_exch_uv
917      - remove superfluous exchange of theta
918      - add myThid to seaice_budget_ocean/ice
919      - add new interface for atmospheric wind forcing (C-grid only)
920        + new routine
921        + two new field (taux, tauy for stress over ice)
922        + removed one global field (DAIRN) for C-grid case only
923    o pkg/thsise
924      - 2nd set of modifs for thsice adjoint in conjunction with exf
925    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
926    
927    checkpoint58y_post
928    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
929      vertical diffusivity, similar to that in MOM4; turned on using
930      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
931      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
932    o Added capability for 3D specification of background vertical diffusion
933      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
934      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
935      "data" file that contains the 3D vertical diffusivity coefficients.
936    o ice dynamics (pkg/seaice) with thsice thermodynamics:
937      - add code within pkg thsice to advect & diffuse sea-ice fields
938      similar to (and will replace) what has been added in  seaice_advdiff.F,
939      but: - conserving Mass, Heat & Salt.
940           - better when using non-linear advection scheme (not yet fully tested)
941           - can also be used in atmospheric set-up (for now, only the diffusion).
942    
943    checkpoint58x_post
944    o IO option for global-file compact format:
945      - add options when generating topology (utils/exch2/matlab-topology-generator)
946      - add I/O capability (pkg/mdsio).
947      - adapt utils/matlab/rdmds.m to read this format.
948      for now long-line format not yet supported by pkg/mdsio (& exch2).
949    o shelfice: add a few diagnostics
950    
951    checkpoint58w_post
952    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
953      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
954      (and replace horiVertRatio in NH code).
955      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
956                         and tutorial_plume_on_slope (sensitive to truncation)
957    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
958      directly to drive seaice model (C-grid only)
959    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
960     - reintroduce computation of wind from stress,
961     - compute tau (in exf_bulkformulae.F) from windstress averaged to
962       mass points to avoid tau = 0
963     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
964    o rdmnc.m: make it work with "global" files created with gluemnc
965    o rdmnc.m : some improvements in dealing with singleton dimension
966      (tested on all testreport mnc output files).
967    o genmake2: disable pkg/profiles if netcdf test fails.
968    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
969    o move call to cal_readparms up to make calendar parameters/variable available
970      to all packages
971    
972    checkpoint58v_post
973    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
974      useDynP_inEos_Zc tested.
975    o pkg/exf: changes to properly interpolate/mask/scale initial fields
976    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
977      and portions thereof.  See read_cs.txt for description and examples.
978    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
979      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
980      following the great-circle arc between those 2 points.
981    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
982      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
983    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
984     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
985     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
986     - still needs work (not working with some options ; efficiency to improve)
987       and serious testing.
988     - use this scheme for temperature & salinity in 2 advection test exp.:
989       advect_xy & advect_xz, respectively.
990    
991    checkpoint58u_post
992    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
993    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
994    o testreport: add option "-skipdir" to skip some test.
995    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
996      momentum calculation.
997    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
998    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
999      remove checkpoint.F and the_correction_step.F (no longer used);
1000      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1001    o add option (linFSConserveTr) to correct for tracer source/sink due to
1002      Linear Free surface
1003    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1004    o pkg/thsice: fix reading mnc-pickups
1005    
1006    checkpoint58t_post
1007    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1008    o pkg/mdsio:
1009     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1010       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1011       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1012     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1013     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1014       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1015     - new S/R (to replace MDSWRITEMETA), which allows to write more
1016       informations (variable names, time ...) to meta files.
1017     - modify rdmds.m to give back the meta file content.
1018    o pkg/diagnostics: change vertical interpolation to be safer, and more
1019       flexible (define p-levels to interpolate to in data.diagnostics);
1020      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1021       diagnostic pointer.
1022    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1023    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1024    o fix multi-category seaice:
1025     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1026       SEAICE_MULTICATEGORY
1027     - fix short wave heat flux
1028    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1029       and allow to use EVP solver. Change forward lab_sea: test both EVP
1030       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1031    o Initial check-in of lab_sea adjoint
1032      (very similar to natl_box_adjoint/code_seaice)
1033      * used C-grid and EVP solver
1034      * used KPP, GM/Redi
1035      * uses inAdExact=.TRUE.
1036      * gradient checks fail for both ADM and TLM
1037        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1038        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1039        issue is related to forward mismatch between g77 an ifort
1040    o pkg/seaice: overhaul of thermodynamics
1041     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1042     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1043     - move a few global fields out of SEAICE.h into seaice_growth.F and
1044       make them 2D (FICE/QNETO/ ...)
1045     - remove FO (it is the same as QNETO)
1046     - introduce a few local fields to avoid modifying external fields such
1047       as atemp, etc.
1048    
1049    checkpoint58s_post
1050    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1051      changed exf_set_gen.F so that
1052        genperiod=0 means input file is one time-constant field and
1053        genperiod=-12 means input file contains 12 monthly means
1054    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1055      this affects truncation error ; generate new output file for exp. which
1056      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1057        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1058        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1059        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1060        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1061        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1062    o start implementation of deep-atmosphere and anelastic formulation
1063    o verification: remove 2nd copy of input files and use script "prepare_run"
1064      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1065    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1066    o profiles: fix for multithreaded case
1067    
1068    o diagnostics: rename few diags:
1069      s/'PRESSURE'/'RCENTER '/g
1070      s/'TICE    '/'oceFreez'/g
1071      s/'TAUX    '/'oceTAUX '/g
1072      s/'TAUY    '/'oceTAUY '/g
1073      s/'SWFLUX  '/'oceQsw  '/g
1074      s/DIFx/DFxE/g
1075      s/DIFy/DFyE/g
1076      and add few ocean-forcing diagnostics:
1077      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1078    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1079      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1080      as actual snow thickness.  It now refers everywhere to effective snow
1081      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1082    
1083    checkpoint58r_post
1084    o modifications to pkg/seaice/growth.F, which change results of
1085      lab_sea experiment: fixes pertain to melting snow over open water, to
1086      masking EVAP under sea ice, and to using the correct AREA variable for
1087      computations of EVAP, PRECIP, HSNOW, and GHEFF
1088    o add ability to read bathy, salt, and theta using MNC (off by def)
1089    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1090      both are turned off by default and do no change any results
1091    o seaice advection with pkg/thsice: a step toward the use of non-linear
1092      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1093    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1094      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1095      in natl_box (affects results @ truncation level: update output.txt)
1096    o multi-threading and IO:
1097      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1098      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1099        (needed to work with SingleCpuIO): tested in all verif. exp.
1100    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1101      affects the results (but none of the verification test uses this scheme).
1102    o Adding some pkg/diagnostics capability to pkg/seaice
1103      (will certainly be subject to changes)
1104    o ctrl: adding new control variables:
1105      lwflux, lwdown, evap, snowprecip, apressure, runoff
1106    
1107    checkpoint58q_post
1108    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1109      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1110      high_res_cube configuration by 4% on Columbia.
1111    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1112      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1113      dynamical allocation (seems to work in multi-threaded).
1114    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1115      single CPU io) so that TAF does not have to see EESUPPORT.h
1116    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1117    
1118    checkpoint58p_post
1119    o obcs: stop if obcs is used with useCDscheme = .true.
1120    o shelfice:
1121     - fix a sign error so that no slip at shelfice interface works
1122     - remove stop for combination non-hydrostatic code and shelfice. That does
1123       not mean, that the results are correct, but at least they are numerically
1124       stable
1125    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1126    o added adjoint exch routined for all exch*3d* routines
1127      and updated flow directives
1128    
1129    checkpoint58o_post
1130    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1131      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1132    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1133      and clean-up reading/writing of pickup files.
1134    o fix local version of read/write pickup (NH part) in rotating_tank/code
1135    o simplify EXCH interface:
1136     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1137     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1138    o added the regrid package
1139    o shelfice:
1140     - add a simple boundary layer scheme to reduce noise
1141     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1142    
1143    checkpoint58n_post
1144    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1145       local variable (not in common block).
1146    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1147      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1148      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1149        to work with SingleCpuIO.
1150    o add "_d 0" to real constant of pkg/cfc subroutines ;
1151       update exp. cfc_exemple & tutorial_cfc_offline output files.
1152    o multi-threading and IO:
1153      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1154        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1155      - barrier before and after reading.
1156      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1157      - avoid using MDS_WRITELOCAL for LAND pkg output.
1158      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1159        common-block variables ; Allows multi-threading with master-thread IO.
1160    o change default MAX_NO_THREADS from 32 to 4 ;
1161      and stop cleanly when MAX_NO_THREADS is too small.
1162    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1163    
1164    checkpoint58m_post
1165    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1166       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1167    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1168       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1169       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1170    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1171        add MITgcm_tutorials (= code + all the tutorials)
1172    o ecco, option to compute cost for total ssh (mean+anom)
1173    o consistent with addition of ptracer and ssh in pkg/profiles
1174    o profiles: adding ptracer and ssh
1175    o testreport: change multi-test output-file name
1176      (from output.txt.{name} to output.{name}.txt)
1177    o profiles: now ok for mutli-tiles case
1178    o seaice: add 4 parameters for different advection schemes for area,
1179      (effective) seaice thickness, enthalphy, and snow height. Their default
1180      is the standard parameter SEAICEadvScheme
1181    o calc_gw:
1182     - add cosFacU in zonal viscous flux (harmonic.visc.).
1183     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1184       of tutorial_plume_on_slope.
1185    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1186    o calc_gw: true flux-form, account for horizontal grid spacing.
1187      update rotating_tank results, but not plume_on_slope (affected at
1188      truncation level, 11 digits).
1189    
1190    checkpoint58l_post
1191    o calc_gw:
1192     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1193     - remove side-drag for now (need to fix it); update plume_on_slope results.
1194     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1195    o commit code to make SST/SSS weights spatially variable
1196      (based on either variable in-situ or variable initial T/S weights)
1197    o pkg/ecco:
1198      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1199        now based on horizontally varying weights wthetaLev, wsaltLev
1200      * cost_averagesflags now returns year indices in addition to day, month
1201      * sflux balance is performed on annual basis
1202        (sflxumm, sfluxmm2, bal_sfluxmm)
1203      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1204        including separate counting and multipliers
1205    o pkg/rbcs
1206      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1207    
1208    checkpoint58k_post
1209    o testreport:
1210     - always build in dir. "build" (if not there, mkdir build instead of building
1211       & running in input)
1212     - run in dir run (if it exists), in build otherwise.
1213     - call prepare_run (if input/prepare_run exists)
1214     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1215    o pkg/exf modifications to interpolation and rotation routines for more
1216       reasonable treatment of North Pole singularity: for tracers North Pole
1217       value is set to northernmost zonal-mean value, for zonal velocity it is
1218       set to zero, and for meridional velocity it is set to northernmost value.
1219    o pkg/exf/exf_check_range.F
1220     - add tile index to diagnostics and move stop statement to the very
1221       end of the routine.
1222    o pkg/diagnostics: (diagnostics_main_init.F)
1223      define title of isomorphic variables according to the current config.
1224    o pkg/thsice with pkg/seaice dynamics:
1225    - fix domain of computation (interior only, required for exf) and do exchanges
1226    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1227    o towards a standard way of dealing with multi-threading in MONITOR
1228      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1229    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1230       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1231    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1232    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1233    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1234       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1235    o tracer advection:
1236     - clean-up and simplify calc_common_factors.F
1237     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1238       advection subroutine (but still not used within DST advection S/R)
1239    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1240    
1241    checkpoint58j_post
1242    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1243      from file (collects calls previously in FORWARD_STEP)
1244    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1245    o adjoint store dir. adjusted accordingly
1246    o genmake2
1247      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1248    
1249    checkpoint58i_post
1250    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1251      on wind stress (SEAICEstressFactor defaults to 1.)
1252    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1253      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1254    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1255      on CS-grid: no longer loosing mass.
1256    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1257    o pkg/ggl90: fix sloppy output and fix a bug
1258    o pkg/seaice: added SEAICEuseEVPpickup parameter
1259      - Set to false in order to start EVP solver with
1260        non-EVP pickup files when using SEAICEuseEVP
1261      - fix sign error in diffusion in seaice_calc_rhs
1262    
1263    checkpoint58h_post
1264    * Modifications for bottom topography control
1265      o replace hFacC by _hFacC at various places
1266      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1267      o add non-self-adjoint cg2d_nsa
1268      o update autodiff support routines
1269      o re-initialise hfac after ctrl_depth_ini
1270      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1271    * Adding verification for 5x5 box (4-layer) bottom topography control
1272    
1273    checkpoint58g_post
1274    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1275       used for mean seasonal cycle, mean diurnal cycle); add an example
1276       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1277    o pkg/ggl90:
1278      - add parameter (minimum surface kinetic energy)
1279      - fix bug (avoiding division by zero)
1280    o couple pkg/thsice to pkg/seaice:
1281      - modify advection in seaice to accomodate new scalar fields to be advected
1282      - only muliDimAdection scheme work with seaice/thsice
1283      - mapping of thsice-variables to seaice-variables, back and forth
1284      - does not break the verification experiments, but does not give the
1285        desired results either
1286    o pkg/seaice
1287      - make (default) second order advection a bit less confusing?
1288    
1289    checkpoint58f_post
1290    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1291      to pkg/seaice):
1292      - new routines thsice_map_exf and thsice_get_exf provide the interface
1293      - add an additional formal parameter to thsice_solve4temp
1294    o pkg/exf:
1295      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1296      - correct Stefan-Boltzmann constant
1297      - new parameter for longwave surface emittance
1298      - separate some stuff from exf_bulkformulae into new routines  
1299        exf_radiation, exf_wind
1300      - add new parameters and constants: longwave emissivity for ocean, ice
1301        and snow, evaporation parameters over ice
1302      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1303        either wind from stress or stress from wind
1304    o pkg/thSIce:
1305    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1306    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1307       and THSICE_CALC_THICKN
1308    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1309    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1310      to make debugging easier.
1311    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1312    o pkg/bulk_force:
1313      - clean-up comments and parameters ;
1314      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1315    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1316      generate new output for test-experiment: aim.5l_cs.thSI
1317    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1318      testreport accordingly
1319    
1320    checkpoint58e_post
1321    o SEAICE_CGRID adjoint done
1322    o R_STAR adjoint implemented.
1323      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1324      * need to sort out init. of h0facc, etc.
1325    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1326      to be able to use it in pure forward.
1327    
1328    checkpoint58d_post
1329    o upgrade simple test-experiment to tutorial example:
1330     step.1: duplicate the experiment and (step.2) will remove the old copy.
1331      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1332      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1333      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1334      tutorial_global_oce_biogeo    <- copy of dic_example
1335      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1336      tutorial_plume_on_slope       <- copy of plume_on_slope
1337      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1338      tutorial_global_oce_optim     <- empty for now (David ?)
1339      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1340     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1341    o correct a sign problem in cost_scat.F
1342    o obcs and ptracers: fix boundary conditions for advections schemes
1343      with larger stencil
1344    o thsice adjoint: start
1345    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1346      completeness
1347    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1348      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1349    o ptracers adjoint:
1350      * avoid extensive recomputatations
1351      * fix missing re-init. of gptr (missed by TAF)
1352    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1353      me to turn off the excessive output to STDOUT that this package produces
1354    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1355      and add those terms in Vector-Invariant formulation.
1356    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1357      if the control period (xx_hfluxperiod etc) is 0
1358    o in profiles pkg, clean routines and fix details
1359    o in ecco pkg, reading ssh data:
1360      fix problem in case the model does not start at iter0=0
1361    o fix mnc-pickup/restart for ptracers
1362    o new package prifiles:
1363      code to compute profile-based cost by Gael Forget
1364      (modifs in ecco, ctrl, autodiff)
1365    o Benign bug fix in initialization (spotted by M. Mazloff) of
1366      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1367    
1368    checkpoint58c_post
1369    o adjoint: finish NLFS adjoint and provide reference output in
1370      verification/global_ocean.90x40x15/results_ad_nlfs
1371    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1372      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1373      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1374      with SEAICE_CGRID defined.
1375    o move calendarDumps from "data" to "data.cal" and clean-up the code
1376      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1377    o add useEXF & useCAL flags (for now, set in hard-coded way)
1378    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1379      (were missing in NH mode, and wrong in quasihydrostatic mode).
1380      waiting for Chris updated version of calc_gw to add those CALLs.
1381    o fix bug in quasihydrostatic S/R ;
1382      add a test for this option: global_ocean.90x40x15.qshyd
1383    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1384      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1385    o add on/off flag useOffLine for package OFFLINE
1386    o seaice:
1387      - modify advection so that it works also on the C-grid
1388      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1389        problem in multi-tile runs with C-grid
1390      - add flags for clipping ice velocities and/or masking solver forcing
1391      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1392        C-grid solver
1393      - added a few comments to seaice_diffusion.F
1394      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1395        are now exclusive)
1396      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1397        required re-ordering the code a little:
1398       + make DAIRN global variable (defined in SEAICE)
1399       + move computation of the viscosities eta and zeta into a new separate
1400         routine (because I need to recompute them in seaice_ocean_stress.F)
1401    
1402    checkpoint58b_post
1403    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1404      update output.txt of exp. aim.5l_cs.thSI
1405    o various mnc cleanups and improvements:
1406      + shrink lookup tables by factor of ~4
1407      + better error reporting when running out of lookup space
1408      + able to handle longer path/file names (up to 500 chars)
1409    o adjoint:
1410      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1411      - TBD: "hidden" mom_vecinv recomp. in dynamics
1412    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1413     (allow to differentiate between forcing components using new integer flags:
1414      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1415     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1416    o ecco
1417      - enable trend removal from SSH anomaly obs.
1418    o adjoint
1419      - a fix for PmEpR when #undef EXACT_CONSERV
1420      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1421      - try to fix "hidden" recomp. in forward_step for NLFS
1422        (NLFS seems broken sometimes after I checked it in)
1423    o seaice:
1424     - add c-grid version of the dynamic solver:
1425       + three new routines that are the c-grid substitute lsr, dynsolver
1426         and ostres
1427       + put a few fields that were local to dynsolver into global common
1428         blocks, so that I can move the computation of stresses etc into
1429         seaice_lsr (saves coding but may break the adjoint).
1430     - replace more hardwired parameters by runtime parameters
1431     - add ice masks that mask the rhs of the implicit solvers where there
1432       is no ice (commented out in seaice_dynsolver, because i am not sure
1433       if this works properly), eventually this should replace the clipping
1434       of ice velocities in seaice_dynsolver to +/-40cm/s.
1435    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1436      include it only where its needed
1437    o move balancing of fluxes before the call of external_forcing_surf
1438    o seaice:
1439      - correct units of turning angles (now they are really in degrees)
1440      - move computation of GWATX/Y out of main routine into dynsolver
1441      - initialize GWATX/Y in seaice_init
1442    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1443      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1444    o seaice: add runtime flags for turning angles (default to zero)
1445    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1446      and trend from exf forcing and ctrl control adjustments
1447    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1448      (since checkpoint57x_post)
1449    o change the default rotation period to 86164.s = the Earth rotation
1450    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1451      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1452    o seaice advection: add code for choosing between the default (2nd order
1453      central differences) and multiDim advection schemes provided by
1454      pkg/generic_advdiff
1455    o seaice:
1456      - removed all references to SEAICE_GRID.h fields from
1457        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1458        (cubed-sphere configuration will change a little)
1459      - grid computations in seaice_init are obsolete now.
1460      - cleaned up code a little so that is easier to read (hopefully).
1461      - added new (better?) discretizations of default advection and diffusion
1462        (turn on with SEAICEuseFluxForm)
1463      - replace 1 in 3d global fields by kSurface in growth.F
1464      
1465    checkpoint58a_post
1466    o seaice:
1467      - bug fix in advect.F
1468    o shelfice:
1469      - separate shelfice load anomaly from pload (breaks with time
1470        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1471        Its default is 0., but it may be computed more cleverly from (unknown)
1472        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1473        done offline. A good approximation of the pressure load anomaly is
1474        necessary to avoid large initial adjustment processes underneath
1475        deep-reaching shelfice.
1476      - small fix in ISOMIP shelfice_thermodynamics
1477      - add more sophisticated thermodynamics of Hellmer (1989), this is
1478        now the default
1479      - give a few constants more intuitive names
1480    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1481      if bulk formulae are used in long integration (especially EmPmR). Turn
1482      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1483      if balancePrintMean, the imbalance that is substracted is printed to
1484      STDOUT.
1485    o fix bug (typo) in obcs_apply_eta.F
1486    o add a new package shelfice which enables us to model the circulation
1487      underneath shelf-ice with draughts of hundreds of meters.
1488     - works
1489     - to do: + include improved thermodynamics
1490              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1491                instead of new field kTopC
1492              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1493                instead of new field R_shelfIce and new code in ini_depth.F
1494                and ini_mask_etc.F?
1495              + adjust vertical mixing schemes?
1496    o seaice pkg:
1497     - add a cpp-flag to include a simple formula for a salinity dependent
1498       freezing point of sea water at the surface
1499     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1500       meridional stresses are now different (and hopefully correct)
1501    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1502       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1503       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1504    o pkg/diagnostics: add options and parameters for regional-statistics
1505       diagnostics ; define regions by reading a region-mask from a file
1506       (might add other options later)
1507    o pkg/bulk_force:
1508     - add option and parameters to use AIM surface-flux formulae.
1509     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1510       others forcing fields (defined in PARM05, parameter file "data") are loaded
1511       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1512     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1513     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1514     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1515       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1516     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1517    
1518    checkpoint58
1519    o add "--embed-source" option to genmake2 which, when the supporting
1520      tools can be compiled (as determined by genmake2) will turn on the
1521      embed_files package which then embeds the entire MITgcm source code
1522      (*.[fFhc] + Makefile) used for the build within the executable
1523      - requested by CNH but off by default
1524      - adds a paltry <9MB to the mitgcmuv executable in most cases
1525      - only writes the output when useEMBEDSRC in eedata is true
1526    o clean up 3-dim. relaxation codes:
1527      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1528      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1529      * Thanks to Tom Haine for testing!
1530    
1531    checkpoint57z_post
1532    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1533      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1534    o fix the pickup behavior for obcs in combination with ptracers
1535    o fix a bug in ptracers_external_fields_load
1536    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1537      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1538    o transfered surface NH pressure to eta field (if exactConserv).
1539    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1540         and update lab_sea output.txt file.
1541    o completing 3-dim. relaxation code: additional term
1542         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1543      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1544      * At compile time, in "EXF_OPTIONS.h" set
1545          #define  ALLOW_CLIMTEMP_RELAXATION
1546          #define  ALLOW_CLIMSALT_RELAXATION
1547      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1548          tauThetaClimRelax3Dim = 15552000.0,
1549          tauSaltClimRelax3Dim  = 15552000.0,
1550      * 3 cases:
1551          1) Use a constant-in-time 3-dim. field
1552          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1553          3) Real-time relax. to time-evolving prescribed field
1554    o Adding Laplacian-type smoothness constraint on
1555      initial and boundary (forcing) controls (ic, bc)
1556      * enable at compile-time via
1557        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1558      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1559      * Absolute scale somewhat unclear so far
1560      * no area weighting was included since no other cost term does so far
1561    
1562    checkpoint57y_post
1563    First step for a NLFS adjoint
1564    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1565    o new init. routines for calc_r_star, calc_surf_dr
1566    o still need to deal with ini_masks_etc
1567    o testreport seemed happy
1568    checkpoint57y_pre
1569    
1570    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1571    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1572    o add new offset feature to offline pkg (plus minor cleanup)
1573    o cfc fixes for final year of integration
1574    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1575      be in GCHEM_OPTIONS).
1576    
1577    checkpoint57x_post
1578    o fix testreport Pb in multiple test experiment.
1579    o cleanup our namelist syntax in verification:
1580      - make it more F95 standards compliant (some work still needed)
1581      - allows the vast majority of our tests to work with gfortran
1582    o Non-Hydrostatic:
1583     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1584     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1585    o Allow to apply AB on T,S rather than on AB(gT,gS):
1586     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1587     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1588       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1589     - need a "clever" read_pickup to restart from the other AB formulation
1590    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1591    o remove some unused variables (reduces number of compiler warnings)
1592    o adjoint
1593      * Disable useVariableViscosity for adjoint for time being
1594        (there are a number of extensive recomputations)
1595      * Initialize certain variables needed for adjoint
1596    
1597    checkpoint57w_post
1598    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1599                 fix the singleCpuIO RS version of MDSWRITEFIELD
1600       and add a WARNING if using globalFiles=T with multi-processors.
1601    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1602      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1603    o tracer advection scheme:
1604      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1605       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1606       was not very convenient).
1607      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1608       (further tests needed for the implicit DST & Flux-Limiter schemes).
1609    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1610      and sRef for convenience, handy, when you want to initialize
1611      ptracers in a large domain with a constant non-zero value. Also,
1612      untangle ptracers_init.F a little.
1613    
1614    checkpoint57v_post
1615    o change dome exp. to use variable viscosity in side-drag terms.
1616    o remove all the files from the cfc_offline test since they are now
1617      incorporated into tutorial_cfc_offline which has been producing
1618      identical results for a few days of testing
1619    o add new parameter: sideDragFactor to enable half-slip-side BC
1620      and change side-drag S/R to use viscosity from mom_calc_visc
1621      (can switch back by setting sideDragFactor=0.); affects results at
1622      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1623       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1624    o vorticity & strain are now computed without masking, to account for
1625      no-slip-side BC in variable viscosity calculation ; mask is applied
1626      anyway later on, before computing advection/coriolis terms.
1627    o modify exp4 to test new obcs support for reading from external files
1628      and for passive tracers
1629    o fix behavior of ptracers_monitor when monitor output is written to a
1630      netcdf-file; still not independent of monitor.F (writes in the same
1631      file).
1632    o change default value of tRef (put a uniform, meaningful value for ocean
1633      & atmos) and initialize sRef (was missing, as Martin mentioned).
1634    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1635      to be proportional to enstrophy dissipation length.  Thus,
1636       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1637      This is now consistent with Smagorinsky and with the manual.
1638    
1639    checkpoint57u_post
1640    o OBCS and PTRACERS: add open boundary support for passive tracers
1641      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1642        OB-values from file; this is not different from the way theta and salinity
1643        are treated
1644      - however, Orlanski-radiation conditions are not supported, and the model
1645        will stop if you use pTracers and Orlanski at the same time.
1646      - beefed up the rountine obcs_external_fields_load: now only those open
1647        boundary values are overwritten with values from files for which there
1648        are really files, otherwise the OB-fields remain untouched. This makes
1649        it possible to use different OBs at different ends of the domain (as
1650        with EXF)
1651    o reduce number of exch calls in shap_filt (s2).
1652    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1653      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1654    
1655    checkpoint57t_post
1656    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1657    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1658      same truncation, independent of the face number: affects affects several
1659      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1660    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1661      note that biharmonic viscosity + no-slip was not tested in any experiment.
1662    o fix bug in non-linear free-surf side-drag ; generate new output for
1663      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1664    o make mnc honor the writeBinaryPrec flag for most kinds of output
1665    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1666    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1667      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1668    o add brackets in multi-terms sum to get same truncation, independent of
1669      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1670      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1671    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1672      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1673      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1674      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1675      Suggested values of viscosity parameters found in mom_calc_visc.
1676      Many new viscosity diagnostics available.
1677    
1678    checkpoint57s_post
1679    o Add clearing-house for viscosity calculations, mom_calc_visc and
1680      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1681      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1682      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1683      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1684      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1685      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1686      ViscAhStrain and viscAhTension are now retired.
1687    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1688    o In response to JMC's bug report, genmake2 now ignores any soft-links
1689      that it finds in the *current* directory when searching for files.
1690      Soft-links found in any other source directories will still work as
1691      they did before.
1692    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1693      a C routine to unlimit the stack size
1694    o mnc-ify pkg/aim snapshot vars
1695    o mnc-ify pkg/land as requested by Daniel
1696    o various changes to mnc including:
1697      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1698      - output can now be grouped so that all files within a group
1699          change the ITER portion of their names in lock-step together
1700      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1701          and works with both EXCH1 and EXCH2 (but needs more testing)
1702      - writing works for all verification test cases w/ g77 on Linux
1703    
1704    checkpoint57r_post
1705    o make MNC variable initialization happen earlier
1706    o add diagnostics for (almost) each term of the momentum Eq.
1707    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1708    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1709    o remove MINIMAL_TAVE_OUTPUT option ;
1710      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1711    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1712      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1713    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1714    o add time-dependent SST, SSS control
1715    o cost terms in ecco/ modularized (new cost_generic.F)
1716    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1717    o new infrastructure for seaice model vs. obs misfits in seaice/
1718      * driver from the_main_loop.F is seaice_cost_driver.F
1719      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1720      * gradient check in Exp. 6a of natl_box_adjoint/
1721    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1722      (see README file)
1723    
1724    checkpoint57q_post
1725    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1726    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1727      - bug was reported by Jean-Michel and Ian Fenty
1728    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1729      update exp. cpl_aim+ocn output.
1730    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1731      Needed for high-res. runs with large global files
1732      to be able to limit tapelev size
1733    o Changed some tests for adjoint:
1734      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1735      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1736      * global_ocean.90x40x15/ back to default 3-level checkpointing
1737    o Modifications to enable scripted COMMON to MODULE conversion
1738      * verification/OpenAD/code/ has necessary scripts and description;
1739      * converts, compiles and runs successfully;
1740    
1741    checkpoint57p_post
1742    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1743    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1744      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1745    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1746    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1747      (was already the case for dissipation with mom_vecinv,
1748       and also the case for grad.PhiHyd when staggered-timeStep)
1749      This will allow to put dissipation out-off the AB time-stepping.
1750     Unfortunately, affects truncation error. Update output of exp. that "fails"
1751      (cg2d matching number) and leave the others for later: front_relax(10),
1752      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1753      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1754    
1755    checkpoint57o_post
1756    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1757      (2) its ready to be documented during the 20050801 DocFest
1758    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1759      for ideal_2D_oce and lab_sea on linux_ia32_g77
1760    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1761      in global1x1_tot/code_seaice_adj to access indices 32, 33
1762      (worth another tag)
1763    
1764    checkpoint57n_post
1765    o adding precip control xx_precip 32
1766    o adding swflux control xx_swflux 33
1767    o Replacing 10 forcing penalty cost routines by 1 generic.
1768    o Implementing partitioning in time-mean and variable adjustment
1769      for atmos. state.
1770    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1771  o in natl_box_adjoint:  o in natl_box_adjoint:
1772    * updated: results_bulk/    * updated exp 1 to 10
1773    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1774    o updated global1x1/*_seaice_adj/
1775      to incorporate latest changes
1776    o enable useSingleCpuIO for mdsio vector routines
1777      (applies in particular to tapelev I/O)
1778    o removed inefficient K-loop in all active_file*control*.F
1779    
1780  checkpoint57m_post  checkpoint57m_post
1781  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)

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