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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.1064 by mlosch, Thu Feb 12 07:53:34 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 model/src/ini_curvilinear_grid.F: check in hack for SX8 compiler
8  o moved ptracer ctrl index 17 -> 32    to make sure that recip_dxV and recip_dyU are never zero, until we
9      have a proper exchange for them. Most compilers do not seem
10      to mind divisions by zero in the overlaps, as long as the results are
11      not used anywhere, but sxf90 does.
12    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
13      real fresh water flux (not yet)
14    o pkg/mdsio & rw:
15     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
16     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
17    o pkg/flt:
18     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
19       init_fixed & ini_varia.
20     - clean-up & simplify linear interpolation S/R:
21       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
22     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
23     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
24     - add vert. coordinate & horiz. indices to output files.
25     - change vertical position in initial condition, from index to depth [m].
26     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
27       (easier to get to a curvilinear grid) ; delX,delY no longer used.
28    o pkg/ggl90: a few modifications:
29     - fix bottom boundary condition, and interpolation of KappaE
30       near top and bottom
31     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
32     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
33     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
34    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
35      (maintain temporary backward compatibility, until next checkpoint)
36    
37    checkpoint61h
38    o pkg/diagnostics with "periodic averaging diagnostics":
39      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
40    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
41    o pkg/obcs: fix loop ranges for balancing code
42    o pkg/flt:
43     - improve criteria for finding which tile owns a float.
44     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
45    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
46      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
47      with ocean biogeo)
48    o pkg/flt:
49     - do some cleaning and fix the restart ;
50     - add output.txt in flt_example/results to get this pkg tested.
51    o genmake2: add an EXTENDED_SRC option and flag.
52       for now, cannot be turned on on command line (only through genmake_local)
53    o pkg/mdsio: read/write vector:
54     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
55     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
56       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
57     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
58      (drop to 4 digits matching for grad). But this test does not look very
59      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
60    
61    checkpoint61g
62    o pkg/flt:
63      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
64       + make OPTIONS file more standard.
65      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
66      - fix _BYTESWAPIO CPP-Flag
67      - standard reading of file-parameter "data.flt"
68      - fix argument list of S/R FLT_RESTART
69      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
70    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
71    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
72      a still unfixed compiler/optimization bug
73    
74    checkpoint61f
75    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
76      update results of global_ocean.cs32x15.icedyn test.
77    o move getcon.F from model/src to pkg/fizhi.
78    o pkg/exf: add parameter for extrapolation of temp up to the surface
79       and option to prevent negative evap (in bulk_largeyeager04 only).
80    o Prather Advection scheme: fix tracer conservation for divergent flow
81      (e.g., when using NonLin Free-Surface).
82    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
83    o gmredi (Visbeck-variable-K):
84     - add more parameters to Visbeck-variable-K.
85     - use a 5 points average for dSigmaR in Visbeck-K calculation
86       (more "homogenous": same stencil and same weights as in dSigmaH)
87     - update output of ideal_2D_oce experiment.
88    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
89      (#undef REAL4_IS_SLOW)
90     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
91       coordinate variable
92     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
93       (surface forcing fields), removes some of the functionality
94     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
95     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
96       probably not all: copy _RS surface flux fields to RL field before
97       calling DIAGNOSTICS_FILL
98     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
99       real*4 (CALL EXCH_*_RS) versions.
100     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
101       (generate new output).
102    
103    checkpoint61e
104    o gmredi (Visbeck-variable-K):
105      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
106      - change computation of Visbeck-K where Slope > Smax :        
107        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
108        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
109    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
110      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
111    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
112    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
113      does not become too large (to avoid precision problems in implicit-diffusion
114      solver); update ideal_2D_oce output.
115    o pkg ggl90:
116      - in ggl90_cal.F: compute only one set of visc/diff, used to
117        step forward TKE/T/S/momentum
118      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
119        have Prandlt =1)
120    o gmredi (fm07):
121      - add lower limit on Transition layer thickness + lower limit on 1/lambda
122      - allow to set few more params from data.gmredi
123    o pkg ggl90:
124          - add missing sqrt(2) factor in computation of mixing length
125            scale in ggl90_calc.F
126            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
127    
128    checkpoint61d
129    o adjoint modifs
130      - adapt to new field rhoInSitu
131      - allow to revert from StoreDynVars2D, StoreDynVars3D
132        to individual fields
133        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
134    o store 3-D (in-situ) density in commom block (DYNVARS.h)
135     - save 1 rho computation.
136     - no longer modify T & S inland when using down_slope pkg.
137    o gad_som : allow to switch to SOM advection for T & S without corresponding
138      pickup files (using new S/R: MDS_CHECK4FILE).
139    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
140      (for useSingleCpuIO to work in multi-threaded)
141    o pkg/shelfice:
142     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
143       with SHELFICEtopoFile in data.shelfice
144     - move code for reading ice shelf topography and modifying hFacC into separate
145       subroutines of the shelfice package
146     - separate initialisation of "fixed" and "variable" variables
147     - kTopC is not (yet) replaced by kSurfC, although this is possible
148    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
149    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
150      and rename:
151      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
152      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
153    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
154    
155    checkpoint61c
156    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
157      to add mass source/sink of fluid in the interior (3-D generalisation
158      of oceanic real-fresh water flux).
159    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
160    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
161    o new pkg: down_slope
162      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
163      - presently, modify T & S inland (dwnslp_calc_rho.F).
164        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
165      - implementation for ocean in P-coords not tested.
166      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
167    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
168      (to facilitate conversion of oceanic pkg to p-coordinate).
169    o change FIND_RHO to FIND_RHO_2D :
170      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
171    o new pkg: cheapaml
172    
173    checkpoint61b
174    o exch2:
175      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
176      - no longer depend on the order sequence (N,S,E,W).
177      - 3rd exchange no longer needed (tested with 24 tiles).
178      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
179      - exch_UV_A-grid readily available (but not yet tested).
180      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
181      (both are no longer needed) in exch_uv: no effect in forward run; but
182       get truncation error differences with adjoint exch.
183    o exch2:
184     - change index-bounds storage (moved from target to local tile,
185       more intuitive this way) ; rename/remove some variables.
186     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
187    
188    checkpoint61a
189    o exch2/matlab-topology-generator:
190      fix bug in index bounds for N-S internal exchange (hard to tell if this
191      had any effect on the solution).
192    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
193      is exceeded
194    o testreport: modify syntax of awk, so that it works also with
195      awk, and not only with nawk and gawk
196    
197    checkpoint61
198    o autodiff
199      Change default for TAF usage by removing argument '-nonew_arg'
200      This changes TAF subroutine argument list (ordering of active var.)
201      Omission of this flag leads to incompatibility w.r.t. TAMC
202      To restore TAMC-compatibility, need following modifs:
203      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
204      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
205      Tested TAF version is 1.9.22
206      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
207    
208    checkpoint60
209    --->>> This is the last checkpoint for which generating the adjoint
210    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
211    --->>> by default.
212    --->>> Future checkpoints will ommit this flag by default.
213    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
214    o pkg/grdchk: Add gradient check to etan0 perturbations.
215    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
216    o pkg/autodiff: more flexibility in zeroadj.
217      model/src: modifying do_oceanic_phys.F accordingly.
218    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
219    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
220      special setup of gmredi for which the adjoint is stable
221      enough for parameter optimization.
222    o bridging the gap between eddy stress and GM.
223      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
224          along with a change in CPP option (now ALLOW_EDDYPSI).
225      -> when using GM w/ GM_AdvForm:
226          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
227          is applied either in the tracer Eq. or in momentum Eq.
228          depending on data.gmredi (intro. GM_InMomAsStress).
229      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
230      The key modifications are in model/src/taueddy_external_forcing.F
231      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
232    
233    checkpoint59r
234    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
235      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
236      fix option to read coriolis(@ cell-corner) from files with CS-grid.
237    o pkg/mnc: add some attributes to standard 1D-coordinate variables
238    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
239      mass points, when using mnc for output
240      - add runtime parameter (missing_value, missing_value_int) to override
241        default (which is the value of getcon('UNDEF'))
242    o pkg/mnc: prepare mnc for the actual use of missing values with the
243      diagnostics package: small fix in mnc_cw_readwrite.template and more
244      initialisation of never used fields
245      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
246      versions
247    o pkg/thsice/thsice_ini_vars.F added default initial values so that
248      thermodynamics sea ice solver does not blow up when some initial fields
249      are missing.
250    o move from external_forcing_surf.F to ini_forcing.F
251      the p-coord. hack consisting in using pLoad to set phi0surf ;
252      update output of tutorial_global_oce_in_p (affected @ truncation level).
253    o Freshen up a bit hs94.1x64x5, notably:
254      remove rotationPeriod and tRef=5*0. (adjoint only), and add
255      exactConserv=.TRUE.
256    o pkg/generic_advdiff:
257      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
258      applies to files where Temperature & Salinity 2nd Order moments are used.
259    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
260      this uses a dynamically allocated internal state data structure
261      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
262      and requires a fortran 90 compiler
263    
264    checkpoint59q
265    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
266       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
267    o Refresh tutorial_global_oce_biogeo, notably:
268      - change bathymetry (put back seamounts in ACC, use hFacs)
269      - change EOS (POLY3 --> JMD95Z)
270      - use Bryan-Lewis vertical diffusivity
271      - use multidimensional advection
272      - remove old virtual virtual in dic pkg, now done through ptracer pkg
273      - change a couple of parameters in dic pkg
274    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
275    o pkg/obcs: change default to OBCSfixTopo = .true.,
276      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
277      - replace "debugMode" with "debugLevel .GE. debLevB"
278    o implementation of TAF directives for gchem,cfc,dic
279    o remove "exp5" (replaced by tutorial_deep_convection).
280    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
281      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
282      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
283      --> changes results in exp4, seaice_obcs
284    o tutorial_deep_convection :
285      update the set-up and increase resolution and domain size ; start
286      from pseudo initial conditions = output at t=120mn in order to see
287      something happening when running testreport.
288    o pkg/seaice: add os7mp as an advection scheme
289                  add check for advection schemes
290                  add a flag for restoring T and S underneath sea ice
291    o pkg/my82: add netcdf-support and diagnostics
292    o thsice pkg:
293      - Now hsMax limits snow height by turning it into ice following
294        flooding scheme (and now conserving energy)
295      - Slight rewriting of the formula in thsice_calc_thick.F
296      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
297      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
298    
299    checkpoint59p
300    o gchem / dic / cfc :
301      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
302      - add new parameter files: "data.dic" & "data.cfc" ;
303      - various re-arrangement in initialisation & header file ;
304      - fix tutorial_global_oce_biogeo for multi-threaded test.
305    o pkg/dic: test for "pickup_dic" file when restarting ;
306      if no pickup-file, can restart with a re-initialised pH (same as it did
307      before) providing pickupStrictlyMatch is set to False.
308    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
309      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
310    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
311      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
312    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
313     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
314       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
315    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
316       scheme to use for vorticty-term ;
317     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
318       (with default selectVortScheme, return to original discretisation)
319     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
320    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
321    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
322      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
323      also fix diagnostics VISCAHW & VISCA4W.
324    
325    checkpoint59o
326    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
327    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
328      move a few statemens out the main loop into separate loops
329    o pkg/shelfice:
330      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
331        (kg/m^2/s), does not break tests, because in verification/isomip,
332        rhoConstFresh=rhoConst (by accident)
333      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
334      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
335        new file model/src/seawater.F, so that they are available for all pkgs.
336      - convert potential temperature into in-situ temperature. This changes the
337        isomip tests => update tests
338    o add a flag writePickupAtEnd (default=true) to be able to suppress
339      writing a pickup at the last timestep
340    o tools/mpack-1.6 :
341      - disable automake (not working) and autoconf (not needed).
342      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
343        also cleaner with much less compilation warnings.
344    o pkg/profiles:
345      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
346      (for "less than 32 characters name" compiler requirement)
347    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
348      conditions that have a different sampling frequency than S/T/U/V obcs
349    o pkg/diagnostics (stats-diags):
350      - fix global Min/Max in case 1 processor get only empty tiles
351    o genmake2: replace (4 times)
352         make genmake_tc_1.o >> genmake_warnings 2>&1
353      with
354         COMM="$CC $CFLAGS -c genmake_tc_1.c"
355         echo $COMM >> genmake_warnings
356         $COMM >> genmake_warnings 2>&1
357      to make genmake2 always see the value of CC as specified in the optfile.
358    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
359      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
360      - modify verification advect_cs test to test SOM-advection on CS-grid.
361    o pkg/ctrl:
362      - Rewrite of ctrl_map_ini_ecco.F,
363        introducing a generic routine (ctrl_map_ini_gen.F).
364      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
365    
366    checkpoint59n
367    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
368      number in dedicate array "hdiag":
369      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
370        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
371      - many small changes (integer format) for large number of diagnostics
372      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
373        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
374    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
375      usingSphericalGrid, this allows to define the rotated grid coordinates
376      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
377      geographical coordinates according to the inverse of the rotation defined
378      by the Euler angles, so that Coriolis parameter and online-interpolation by
379      exf works with the geographical coordinates on XC/YC/XG/YG.
380      Naturally, this feature does not work with all packages, so some
381      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
382      profiles), because there the coordinates are assumed to be regular
383      spherical grid coordinates.
384    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
385      - introduce isopycnal diffusion coefficient control.
386    o tools/adjoint_options:
387      - additional control vector components.
388    o pkg/mnc: have mnc create marginally meaning full coordinate variables
389      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
390    o pkg/mypackage:
391      - add example of read/write pickup for state-var ;
392      - add entry points to the main code for state-vars diags & write-pickup.
393    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
394      transitions for useExfYearlyFields
395      - add new subroutine that determines the file to read from for
396        use*YearlyFields = .TRUE. and .FALSE.
397      - add a verification experiment to global_with_exf that tests
398        useExfYearlyFields with USE_EXF_INTERPOLATION defined
399    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
400      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
401      subroutines (which could be generated from a template, because they are
402      almost identical), for now they are included in obcs_prescribe_read.F for
403      simplicity
404    o pkg/exf:
405      - add a little more diagnostic to exf_interp_read (in analogy to
406        mds_read_field, can be turned off with debugLevel < debugLevA=1)
407      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
408        ugly but fast by unrolling short inner loops, inserting a unroll=8
409        directive in routine lagran, and splitting a loop and making do while the
410        outermost loop (the latter requires the intoduction of index arrays)
411    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
412    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
413      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
414    o verification/seaice_obcs: updated for restart test and latest options
415    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
416      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
417      for now this is only available for the C-grid code and also within
418      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
419    
420    checkpoint59m
421    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
422      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
423    o gad_som : fix flux output (& diagnostics) to have same units as other  
424      advection scheme fluxes (was previously multiplied by deltaT).  
425    o added verification/seaice_obcs both to test seaice open boundaries
426      and to provide an example matlab scrpt for generating them
427    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
428    o pkg/salt_plume: clean up salt_plume_frac.F to
429      remove redundancy in PlumeMethod 1 and 4
430    o pkg/kpp: added saltplume diagnostics
431    o pkg/obcs and pkg/seaice:
432      - do not set uice and vice to zero when OB*icefile are unspecified
433      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
434      - moved seaice tracer obcs after call to seaice_growth
435    o pkg/salt_plume: added various options for salt plume depth
436      criterion and for vertical distribution of the salt
437    
438    checkpoint59l
439    o pkg/ptracers: new version of ptracers pickup:
440      read meta file and write only fields which are needed to restart.
441      ( same logic as main pickup file ; also using pickupStrictlyMatch )
442    o pkg/seaice:
443      - add timescale for melting due to warm mixed layer as a means of
444        setting SEAICE_availHeatFrac more conveniently
445      - add a CPP-flag/runtime parameter check for flooding algorithm
446      - reformulated availHeat in seaice_growth.F to be independent of AREA
447    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
448      unit changes
449    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
450    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
451      SX vector computer.
452    o pkg/seaice:
453      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
454        seaice forcing fields can now be read only through pkg/exf
455      - removed some unused halos
456    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
457    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
458      or U/VICE from U/VWIND before computing U/VSTRESS
459    
460    checkpoint59k
461    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
462      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
463    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
464      all experiments pass when compile with un-initialised var. checking option.
465    o added pkg/salt_plume
466    o script to test restart (for now, in MITgcm_contrib/jmc_script)
467    o pkg/seaice: new read/write pickup version.
468      read meta file and write only fields which are needed to restart.
469      ( same logic as main pickup file ; also using pickupStrictlyMatch )
470    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
471    o lab_sea.hb87: modify the domain & update output.hb87.txt :
472      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
473      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
474      process. Fixed here by closing the domain at the Northern boundary.
475    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
476    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
477      a set of consecutive levels in/from a 3-D array.
478    o pkg/ptracers:
479      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
480      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
481    
482    checkpoint59j
483    o in pkgs: dic, obcs, offline, rbcs:
484      standard way to compute coeff. for time interpolation between 2 time reccords
485      which retains full precision (& make results less dependent on compiler).
486      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
487    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
488      packages instead of reading ice cover and wind speed separately
489    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
490     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
491      to allow to compile customized code before the update)
492    o cleaning-up:
493      - fix CPP instruction syntax in pkg/obcs
494      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
495        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
496      - fix some threads issue in IO parts.
497    o pkg/dic:
498      - add tons of "_d 0" (--> much better testreports !)
499       and then update outputs of tutorial_global_oce_biogeo
500    o pkg/mom_fluxform:
501      add a special version of momentum advection intended to conserve momentum
502      next to a bathymetry step or a coastline edge. (default = off = #undef)
503    o new read/write pickup version:
504      - for now, only implemented for main (mdsio) pickup file.
505      - write out only what is needed to restart; merge pickup_nh , pickup_ph
506        and main pickup together.
507      - read meta file; read only what is needed to restart; stop if a field
508        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
509        if it make sense (even if the restart is not perfect).
510      - if no meta file, assume that pickup to read corresponds exactly to
511        a pickup that would currently be written.
512      - read pickup written in the old format (until checkpoint59i) if it
513        recognizes an old meta file (no field-list).
514      - add a meta file in exp. which starts from a pickup: 2 cases:
515        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
516         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
517        b) a meta file describing the content of the associated pickup file
518         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
519    o pkg/mdsio & pkg/rw:
520      - new routine to read a meta file ; new set of routine to read
521        Multiple-fields file (with meta file).
522    o added open boundary conditions capability for seaice
523        HSNOW, HSALT, UICE, and VICE
524    
525    checkpoint59i
526    o adjoint:
527      * fix multiDimAdvection adjoint
528        (partial recomputation problem by TAF for fVerT(:,:,kDown)
529        and comlev1 size definition (maxpass vs. max. number of tracers)
530      * verification/global_ocean.90x45x15 adjoint now tests
531        NLFS and multiDimAdvection using DST3 (=30)
532      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
533    o pkg/kpp: add "_d 0" to real constant (if missing);
534      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
535      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
536    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
537      for internal parameters related to restart process (formerly from PARAMS.h)
538      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
539    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
540      as argument. (only atm2d & obcs write_pickup have not yet been updated)
541    o pkg/monitor:
542      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
543      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
544      - account for deep Atmosphere factor and density factor (anelastic)
545    o added open boundary conditions capability for seaice HEFF and AREA
546    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
547      thermodynamics
548      - requires a little reorganization, which affects the testreport results
549        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
550        so that now the conservative form is tested
551      - add a few comments
552    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
553    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
554    o add new diagnostics to seaice: advective, diffusive fluxes (only for
555      multidim-advection, for scheme 2 they are not filled) and transports,
556      thermodynamic growth rates
557    o change units of EmPmR (inside the code, + within coupling interface)
558      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
559      Affects results @ truncation level (cg2d match) and update output of
560       experiments: lab_sea(6), global_ocean.90x40x15(10),
561      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
562      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
563      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
564      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
565    
566    checkpoint59h
567    o pkg/exf:
568      - improve vectorization by moving if-statement out of loops in
569        exf_mapfields, exf_radiation
570      - exf_bulkformulae.F: introduce 2D fields and vectorize code
571    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
572    o testreport:
573      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
574        monitor & update offline_exf_seaice exp. output.
575      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
576    o pkg/seaice:
577      - bug fix in the evp solver: boundary conditions were affected be
578        masking of zMax/zMin (changes results)
579      - minor bug fix in boundary conditions in seaice_calc_strainrates
580        (changes results for no_slip)
581      - seaice_lsr.F: make interpolation of eta dependent on boundaries
582      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
583      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
584        stress formulation and no-slip boundary conditions
585    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
586      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
587    o pkg/seaice: a first HSALT time stepping equation has been checked in
588    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
589      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
590      without requiring DO-IF statements
591    o pkg/thsice:
592      use continuous power-law function for partition of energy between lateral
593      melting/freezing and thinning/thickening ; old code using step function
594      still available with #undef THSICE_FRACEN_POWERLAW
595      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
596    o testreport: change AD testing : check against results/output_adm.txt
597      using same scripts as for forward test.
598    
599    checkpoint59g
600    o adjoint testing: in preparation for changing testreport:
601      - output format: cost and grad written on separated lines
602      - ad output results in directory "results" (instead of "results_ad")
603    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
604    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
605    o pkg/ecco: allow user defined cost function contributions
606    o testreport:
607      Allow to choose (per experiment) the list of tested output variables
608       and the main variable (used to issue a pass/FAIL ) ;
609      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
610      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
611      Also modify printing of summary:
612       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
613       b) echo the list of tested variables in the individual summary.txt of
614          each experiment.
615    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
616      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
617      (but still depend on the tile decompostion of the domain).
618    o pkg/seaice: change a discretization detail to make the B-grid code
619      "more symmetric". This change is likely to remove all "ridges/leads" that
620      where quasi-aligned with the grid in B-grid solutions. It may also be
621      the solution to the stress coupling issues with the B-grid.
622    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
623      remove .cvsignore from input dir. (since testreport no longer run here).
624    o pkg/thsice:
625     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
626     - fix reshaping of sea-ice just after advection:
627       melt all the ice only if ice-volume is too small.
628     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
629       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
630     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
631    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
632      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
633    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
634      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
635      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
636      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
637      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
638      -> update output.txt
639    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
640     this affects truncation error: -> update output.txt of exp:
641      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
642      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
643    
644    checkpoint59f
645    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
646    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
647      a bounded range (in forward mode)
648    o pkg/ecco, ctrl, autodiff and mom_common:
649     internal parameter controls, completements of implementations
650    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
651    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
652      (not seem any difference in testing results).
653    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
654       at face corners.
655    o pkg/generic_advdiff:
656     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
657      loop range indices for computing vertical advection tendency
658      and do the calculation in the interior only (no overlap) ;
659      for now, only implemented for SOM advection (to save CPU time).
660     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
661    o exch2 adjoint
662      First set of changes:
663      - add exch2 hand-written adjoint templates
664      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
665        This will require cleanup in pkg/autodiff/*.F
666        (changed routines currently kept separate in verif. code/)
667      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
668        that used to hide exch2 or cubed-sphere specific code
669        (commented via 'cph-exch2')
670    o pkg/seaice
671      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
672    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
673       output of global_ocean.cs32x15.thsice .
674    
675    checkpoint59e
676    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
677      for B-grid vector (not yet tested) and C-grid vector (<- only used
678      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
679    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
680      (#ifdef ALLOW_SALT_PLUME)
681    o gather_2d/scatter_2d: removed halo regions
682    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
683      scheme and the corresponding test case (under front_relax dir). For now,
684      only available with Skew-flux form and not yet tested in realistic set-up.
685      adjoint: store directives updated, but gradient checks deteriorated,
686      so maybe GM/Redi adjoint is now broken.
687    o seaice adjoint
688      * add AREA, HEFF, HSNOW as control variable
689        (should not change lab_sea results)
690      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
691    o pkg/seaice:
692      * added computation of saltFlux in seaice_growth;
693        For time being, sea ice salinity is assumed constant
694        contribution of snow flooding to freshening of sea ice is neglected.
695        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
696        defaults to 0.0 in order to maintain backward compatibility.
697        Typical values for SEAICE_salinity are 4 to 10 g/kg.
698      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
699      * added SEAICE_availHeatFrac, which specifies fraction of surface level
700        heat content used to melt or grow ice
701      * commented out cap of HICE: it helps keep ice thinner
702      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
703      * applied OBCS T/S mask to HEFFM sea ice mask
704    
705    checkpoint59d
706    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
707     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
708     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
709    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
710     and change default value of parameter "GM_Small_Number";
711     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
712       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
713       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
714    o pkg/ecco: cost function when applying pkg/smooth to controls
715    o pkg/ctrl: add forcingPrecond run time parameter
716    o pkg/seaice:
717     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
718     - fix bug in metric terms of u-equation in LSR solver (implicit part),
719       changes verification/lab_sea
720     - rearrange implicit part of u-equation in LSR solver to make it easier to
721       read, understand, and debug. This causes changes at the truncation level.
722     - fix (serious) bug in the boundary conditions (sign error in the implicit
723       part) of the LSR solver. Changes all LSR results.
724     - fixed problem with HSNOW initialization to avoid thick snow when AREA
725       is initilized with small values - does not change lab_sea results.
726     - added HsnowFile initialization capability
727    o pkg/smooth: addition to model/src and pkg/ctrl so allow
728     initialization of pkg/smooth and application to control vector
729    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
730    o dependencies: pkg/profiles requires pkg/cal
731    o pkg/profiles:
732     - added option ALLOW_PROFILES_GENERICGRID
733         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
734         that interpolation information (grid points and coefficients) is provided
735         within the netcdf input files.
736         -> sample matlab scripts can be found in MITgcm_contrib/gael
737         that allow you to prepare netcdf input files.
738     - also modified: cleaner include statements, cleaner error print statements,
739       cleaner stops when error, and more tests of the netcdf input files consistency.
740    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
741    o pkg/seaice:
742     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
743       requires a new routine: seaice_diagnostics_fill.F
744     - make sure that seaice does not move if not forced (pressure replacement
745       method, Hibler and Ip, 1995), changes results
746     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
747     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
748       It is turned off by default (=-1.), because it changes the results.
749     - make it possible to read AREA from a file, too.
750    
751    checkpoint59c
752    o add S/R and diagnostics for oceanic mixed-layer depth
753    o move GMRedi call after all vertical mixing schemes (including KPP)
754    o pkg/thsice:
755     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
756      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
757    o pkg/obcs:
758     - bug fix for balance code
759    o pkg/seaice:
760      - allow values of SEAICE_elasticParm > 1
761      - add new parameter SEAICE_evpTauRelax as an alternative
762        to SEAICE_elasticParm
763      - make lsr boundary conditions free slip (by default), changes result
764      - add code for no slip boundary conditions for lsr
765      - set minimum of zeta to zero (and not 4e8) (changes results)
766      - add a cap on AREA after advecting AREA if seaice_growth is not called
767    o change calculation of Visbeck K:
768      - no longer depend on tapering scheme; instead, compute slope (limited
769        by GM_maxSlope). this is equivalent to what was comuted before with
770        clipping or linear tappering.
771      - fix vertical averaging (wrong by 1/2 level)
772      - leave the old version (but will not be maintained) within
773        #ifdef OLD_VISBECK_CALC / #endif
774      - update output of exp. ideal_2D_oce
775    o change error catch in calc_r_star to improve vectorization
776    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
777      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
778    o adjoint:
779      Re-organized adjoint checkpointing according to Matt Mazloff
780      (but with modifs/completions/cleanups)
781      Storing is now bundled into large arrays to optimized I/O
782      (and second step in cleanup of the_main_loop)
783    
784    checkpoint59b
785    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
786      - export/import (between ocean & coupler) fields needed for ocean DIC.
787    o pkg/seaice:
788      - get rid of three more exchanges seaice_calc_viscosities (required
789        different loop boundaries in seaice_lsr and seaice_ocean_stress)
790      - bug fix in seaice_ocean_stress (update of lab_sea required)
791      - reduce loop boundaries to necessary minimum also in seaice_evp
792      - go back to the old way of computing deltaC/Z as the adjoint likes that
793        better
794    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
795      passive tracer to an Age Tracer) + update output.txt
796    o pkg/exf:
797      - implement A-grid / C-grid selection for wind-stress input files.
798      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
799      for now, in exf_bulk_largeyeager04.F only :
800      - change implementation for case where windspeed + 2. components wind-stress
801        are read-in. AND use rhoConstFresh to convert evap.
802    o pkg/seaice:
803      - use correct EXCH_UV for wind-forcing (on A-grid).
804      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
805        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
806    o pkg/exf:
807      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
808      EXF_INTERPOLATION:
809      - merge global_with_exf/code version of exf_interp_read.F
810        to the main code ;
811      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
812        reading the file ; Important: This options needs to be defined to recover
813        previous code.
814        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
815      - no longer loose real*8 precision along the way when using exf_iprec=64.
816    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
817      - change discretisation of evp-solver in order to avoid another exchange
818        (changes lab_sea) and clean up a little
819      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
820        help the adjoint (this also changes the results slightly)
821      - add a few "_d 0" where they had been missing in seaice_evp.F
822      - cleaning up: remove unused seaice_calc_rhs.F
823    o pkg/exf: some cleaning-up:
824      - change various "constants" into runtime parameters
825      - cleaned-up Large&Yeager04 routine which should eventually
826        replace exf_bulkformulae.F (changed names of S/R and CPP)
827        and merged various ALLOW_ATM_WIND options
828     only used with thsice pkg (in thsice_get_exf.F):
829      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
830        which are used when useStabilityFct_overIce=TRUE (= the default)
831      - change default values of ice & snow emissivity and scale downward LW
832        by ice & snow emissivity.
833    o pkg/thsice:
834     fix few little problems, in thsice_calc_thickn.F:
835      - growth vertically (and not laterally) if iceFrac == iceMaskMax
836      - melt only laterally if hIce < hThinIce (as the comments say)
837      and in thsice_extend.F:
838      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
839      - start to form ice as soon as the minimum ice-volume is reachable.
840     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
841      and cpl_aim+ocn
842    o pkg/kpp
843     - move computation of surface related input fields to KPP into a new
844       subroutine kpp_forcing_surf.F
845     - remove wrong (within bi,bj loops) EXCH calls.
846     - little cleaning (add argument myThid in last position, cvs header ...)
847     - for now, fix conservation problem by exchanging KPPviscAz (may not
848       be the best fix)
849    o pkg/seaice
850     - check for inconsistent evp parameter/cpp-flag combination
851     - remove leftover errIO flat for obsolete name list error handling
852    o OpenAD
853     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
854    
855    checkpoint59a
856    o pkg/seaice: some parameter clarifications and a little bit of clean up
857    o pkg/thsice: rename run-time parameters:
858       himin       -> hIceMin
859       himin0      -> hThinIce
860       hihig       -> hThickIce
861       i0          -> i0swFrac
862       transCoef   -> bMeltCoef
863       frac_energy -> fracMelting
864      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
865       with default values (for now) that do not change the results.
866      remove old version of thsice vars advection in pkg/seaice.
867    o in FFIELDS.h:
868      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
869      - make pLoad & sIceLoad always available (but still only used if
870         ATMOSPHERIC_LOADING is #define).
871    o pkg/kpp: replaced _KPP_RL with _RL
872    o bug fixes for vertical diffusivity computations when both KPP and
873        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
874        are no longer updating the vertical diffusivity array
875        (passed as argument) but are (re-) setting those arrays.
876    o pkg/seaice: fix bug in evp solver, while doing that
877      - change (improve?) discretization of stress computations for both
878        cgrid-lsr and evp solver
879      - add a new routine to compute strain rates
880      - the above changes lab_sea results
881      - add no slip conditions for evp solver (off by default), lsr-version
882        may follow
883      - fix exchange for shear at Z-points (does not change lab_sea)
884      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
885        (to force the user to pick a time step since there is not "safe" way
886        of choosing it)
887      - add principal stress diagnostics
888      - rearrange fields for evp a little to avoid having to call a: too many
889        exchanges and b: exchanges for stress trensor components which we do
890        not have.
891      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
892        of evp, complete rewrite for lsr case (latter is does not yet work
893        in all cases)
894    o pkg/kpp: add code to have mixing in shelf ice caverns
895      - add myThid to all kpp routines (long overdue)
896    
897    checkpoint59
898    o pkg/exf:
899      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
900        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
901      - move exf header files from lower_case.h to UPPER_CASE.h ;
902        add missing cvs Header & Name
903      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
904      - add namelist param. selectStressGridPosition, exf_monFreq
905      - retire many _CLIM routines, and remove data.exf_clim
906        + params moved to data.exf
907        + climsst, climsss now handled by exf_set_gen, i.e.
908          climss?period=0 refers to constant field,
909          climss?period=-12 to monthly forcing
910      - split up namelists in data.exf
911    o pkg/seaice:
912      - remove seaice_exch and seaice_exch_uv
913      - remove superfluous exchange of theta
914      - add myThid to seaice_budget_ocean/ice
915      - add new interface for atmospheric wind forcing (C-grid only)
916        + new routine
917        + two new field (taux, tauy for stress over ice)
918        + removed one global field (DAIRN) for C-grid case only
919    o pkg/thsise
920      - 2nd set of modifs for thsice adjoint in conjunction with exf
921    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
922    
923    checkpoint58y_post
924    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
925      vertical diffusivity, similar to that in MOM4; turned on using
926      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
927      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
928    o Added capability for 3D specification of background vertical diffusion
929      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
930      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
931      "data" file that contains the 3D vertical diffusivity coefficients.
932    o ice dynamics (pkg/seaice) with thsice thermodynamics:
933      - add code within pkg thsice to advect & diffuse sea-ice fields
934      similar to (and will replace) what has been added in  seaice_advdiff.F,
935      but: - conserving Mass, Heat & Salt.
936           - better when using non-linear advection scheme (not yet fully tested)
937           - can also be used in atmospheric set-up (for now, only the diffusion).
938    
939    checkpoint58x_post
940    o IO option for global-file compact format:
941      - add options when generating topology (utils/exch2/matlab-topology-generator)
942      - add I/O capability (pkg/mdsio).
943      - adapt utils/matlab/rdmds.m to read this format.
944      for now long-line format not yet supported by pkg/mdsio (& exch2).
945    o shelfice: add a few diagnostics
946    
947    checkpoint58w_post
948    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
949      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
950      (and replace horiVertRatio in NH code).
951      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
952                         and tutorial_plume_on_slope (sensitive to truncation)
953    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
954      directly to drive seaice model (C-grid only)
955    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
956     - reintroduce computation of wind from stress,
957     - compute tau (in exf_bulkformulae.F) from windstress averaged to
958       mass points to avoid tau = 0
959     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
960    o rdmnc.m: make it work with "global" files created with gluemnc
961    o rdmnc.m : some improvements in dealing with singleton dimension
962      (tested on all testreport mnc output files).
963    o genmake2: disable pkg/profiles if netcdf test fails.
964    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
965    o move call to cal_readparms up to make calendar parameters/variable available
966      to all packages
967    
968    checkpoint58v_post
969    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
970      useDynP_inEos_Zc tested.
971    o pkg/exf: changes to properly interpolate/mask/scale initial fields
972    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
973      and portions thereof.  See read_cs.txt for description and examples.
974    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
975      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
976      following the great-circle arc between those 2 points.
977    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
978      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
979    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
980     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
981     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
982     - still needs work (not working with some options ; efficiency to improve)
983       and serious testing.
984     - use this scheme for temperature & salinity in 2 advection test exp.:
985       advect_xy & advect_xz, respectively.
986    
987    checkpoint58u_post
988    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
989    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
990    o testreport: add option "-skipdir" to skip some test.
991    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
992      momentum calculation.
993    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
994    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
995      remove checkpoint.F and the_correction_step.F (no longer used);
996      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
997    o add option (linFSConserveTr) to correct for tracer source/sink due to
998      Linear Free surface
999    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1000    o pkg/thsice: fix reading mnc-pickups
1001    
1002    checkpoint58t_post
1003    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1004    o pkg/mdsio:
1005     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1006       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1007       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1008     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1009     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1010       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1011     - new S/R (to replace MDSWRITEMETA), which allows to write more
1012       informations (variable names, time ...) to meta files.
1013     - modify rdmds.m to give back the meta file content.
1014    o pkg/diagnostics: change vertical interpolation to be safer, and more
1015       flexible (define p-levels to interpolate to in data.diagnostics);
1016      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1017       diagnostic pointer.
1018    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1019    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1020    o fix multi-category seaice:
1021     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1022       SEAICE_MULTICATEGORY
1023     - fix short wave heat flux
1024    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1025       and allow to use EVP solver. Change forward lab_sea: test both EVP
1026       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1027    o Initial check-in of lab_sea adjoint
1028      (very similar to natl_box_adjoint/code_seaice)
1029      * used C-grid and EVP solver
1030      * used KPP, GM/Redi
1031      * uses inAdExact=.TRUE.
1032      * gradient checks fail for both ADM and TLM
1033        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1034        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1035        issue is related to forward mismatch between g77 an ifort
1036    o pkg/seaice: overhaul of thermodynamics
1037     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1038     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1039     - move a few global fields out of SEAICE.h into seaice_growth.F and
1040       make them 2D (FICE/QNETO/ ...)
1041     - remove FO (it is the same as QNETO)
1042     - introduce a few local fields to avoid modifying external fields such
1043       as atemp, etc.
1044    
1045    checkpoint58s_post
1046    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1047      changed exf_set_gen.F so that
1048        genperiod=0 means input file is one time-constant field and
1049        genperiod=-12 means input file contains 12 monthly means
1050    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1051      this affects truncation error ; generate new output file for exp. which
1052      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1053        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1054        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1055        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1056        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1057        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1058    o start implementation of deep-atmosphere and anelastic formulation
1059    o verification: remove 2nd copy of input files and use script "prepare_run"
1060      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1061    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1062    o profiles: fix for multithreaded case
1063    
1064    o diagnostics: rename few diags:
1065      s/'PRESSURE'/'RCENTER '/g
1066      s/'TICE    '/'oceFreez'/g
1067      s/'TAUX    '/'oceTAUX '/g
1068      s/'TAUY    '/'oceTAUY '/g
1069      s/'SWFLUX  '/'oceQsw  '/g
1070      s/DIFx/DFxE/g
1071      s/DIFy/DFyE/g
1072      and add few ocean-forcing diagnostics:
1073      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1074    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1075      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1076      as actual snow thickness.  It now refers everywhere to effective snow
1077      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1078    
1079    checkpoint58r_post
1080    o modifications to pkg/seaice/growth.F, which change results of
1081      lab_sea experiment: fixes pertain to melting snow over open water, to
1082      masking EVAP under sea ice, and to using the correct AREA variable for
1083      computations of EVAP, PRECIP, HSNOW, and GHEFF
1084    o add ability to read bathy, salt, and theta using MNC (off by def)
1085    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1086      both are turned off by default and do no change any results
1087    o seaice advection with pkg/thsice: a step toward the use of non-linear
1088      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1089    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1090      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1091      in natl_box (affects results @ truncation level: update output.txt)
1092    o multi-threading and IO:
1093      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1094      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1095        (needed to work with SingleCpuIO): tested in all verif. exp.
1096    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1097      affects the results (but none of the verification test uses this scheme).
1098    o Adding some pkg/diagnostics capability to pkg/seaice
1099      (will certainly be subject to changes)
1100    o ctrl: adding new control variables:
1101      lwflux, lwdown, evap, snowprecip, apressure, runoff
1102    
1103    checkpoint58q_post
1104    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1105      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1106      high_res_cube configuration by 4% on Columbia.
1107    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1108      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1109      dynamical allocation (seems to work in multi-threaded).
1110    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1111      single CPU io) so that TAF does not have to see EESUPPORT.h
1112    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1113    
1114    checkpoint58p_post
1115    o obcs: stop if obcs is used with useCDscheme = .true.
1116    o shelfice:
1117     - fix a sign error so that no slip at shelfice interface works
1118     - remove stop for combination non-hydrostatic code and shelfice. That does
1119       not mean, that the results are correct, but at least they are numerically
1120       stable
1121    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1122    o added adjoint exch routined for all exch*3d* routines
1123      and updated flow directives
1124    
1125    checkpoint58o_post
1126    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1127      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1128    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1129      and clean-up reading/writing of pickup files.
1130    o fix local version of read/write pickup (NH part) in rotating_tank/code
1131    o simplify EXCH interface:
1132     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1133     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1134    o added the regrid package
1135    o shelfice:
1136     - add a simple boundary layer scheme to reduce noise
1137     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1138    
1139    checkpoint58n_post
1140    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1141       local variable (not in common block).
1142    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1143      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1144      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1145        to work with SingleCpuIO.
1146    o add "_d 0" to real constant of pkg/cfc subroutines ;
1147       update exp. cfc_exemple & tutorial_cfc_offline output files.
1148    o multi-threading and IO:
1149      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1150        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1151      - barrier before and after reading.
1152      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1153      - avoid using MDS_WRITELOCAL for LAND pkg output.
1154      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1155        common-block variables ; Allows multi-threading with master-thread IO.
1156    o change default MAX_NO_THREADS from 32 to 4 ;
1157      and stop cleanly when MAX_NO_THREADS is too small.
1158    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1159    
1160    checkpoint58m_post
1161    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1162       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1163    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1164       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1165       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1166    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1167        add MITgcm_tutorials (= code + all the tutorials)
1168    o ecco, option to compute cost for total ssh (mean+anom)
1169    o consistent with addition of ptracer and ssh in pkg/profiles
1170    o profiles: adding ptracer and ssh
1171    o testreport: change multi-test output-file name
1172      (from output.txt.{name} to output.{name}.txt)
1173    o profiles: now ok for mutli-tiles case
1174    o seaice: add 4 parameters for different advection schemes for area,
1175      (effective) seaice thickness, enthalphy, and snow height. Their default
1176      is the standard parameter SEAICEadvScheme
1177    o calc_gw:
1178     - add cosFacU in zonal viscous flux (harmonic.visc.).
1179     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1180       of tutorial_plume_on_slope.
1181    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1182    o calc_gw: true flux-form, account for horizontal grid spacing.
1183      update rotating_tank results, but not plume_on_slope (affected at
1184      truncation level, 11 digits).
1185    
1186    checkpoint58l_post
1187    o calc_gw:
1188     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1189     - remove side-drag for now (need to fix it); update plume_on_slope results.
1190     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1191    o commit code to make SST/SSS weights spatially variable
1192      (based on either variable in-situ or variable initial T/S weights)
1193    o pkg/ecco:
1194      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1195        now based on horizontally varying weights wthetaLev, wsaltLev
1196      * cost_averagesflags now returns year indices in addition to day, month
1197      * sflux balance is performed on annual basis
1198        (sflxumm, sfluxmm2, bal_sfluxmm)
1199      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1200        including separate counting and multipliers
1201    o pkg/rbcs
1202      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1203    
1204    checkpoint58k_post
1205    o testreport:
1206     - always build in dir. "build" (if not there, mkdir build instead of building
1207       & running in input)
1208     - run in dir run (if it exists), in build otherwise.
1209     - call prepare_run (if input/prepare_run exists)
1210     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1211    o pkg/exf modifications to interpolation and rotation routines for more
1212       reasonable treatment of North Pole singularity: for tracers North Pole
1213       value is set to northernmost zonal-mean value, for zonal velocity it is
1214       set to zero, and for meridional velocity it is set to northernmost value.
1215    o pkg/exf/exf_check_range.F
1216     - add tile index to diagnostics and move stop statement to the very
1217       end of the routine.
1218    o pkg/diagnostics: (diagnostics_main_init.F)
1219      define title of isomorphic variables according to the current config.
1220    o pkg/thsice with pkg/seaice dynamics:
1221    - fix domain of computation (interior only, required for exf) and do exchanges
1222    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1223    o towards a standard way of dealing with multi-threading in MONITOR
1224      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1225    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1226       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1227    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1228    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1229    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1230       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1231    o tracer advection:
1232     - clean-up and simplify calc_common_factors.F
1233     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1234       advection subroutine (but still not used within DST advection S/R)
1235    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1236    
1237    checkpoint58j_post
1238    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1239      from file (collects calls previously in FORWARD_STEP)
1240    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1241    o adjoint store dir. adjusted accordingly
1242    o genmake2
1243      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1244    
1245    checkpoint58i_post
1246    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1247      on wind stress (SEAICEstressFactor defaults to 1.)
1248    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1249      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1250    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1251      on CS-grid: no longer loosing mass.
1252    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1253    o pkg/ggl90: fix sloppy output and fix a bug
1254    o pkg/seaice: added SEAICEuseEVPpickup parameter
1255      - Set to false in order to start EVP solver with
1256        non-EVP pickup files when using SEAICEuseEVP
1257      - fix sign error in diffusion in seaice_calc_rhs
1258    
1259    checkpoint58h_post
1260    * Modifications for bottom topography control
1261      o replace hFacC by _hFacC at various places
1262      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1263      o add non-self-adjoint cg2d_nsa
1264      o update autodiff support routines
1265      o re-initialise hfac after ctrl_depth_ini
1266      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1267    * Adding verification for 5x5 box (4-layer) bottom topography control
1268    
1269    checkpoint58g_post
1270    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1271       used for mean seasonal cycle, mean diurnal cycle); add an example
1272       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1273    o pkg/ggl90:
1274      - add parameter (minimum surface kinetic energy)
1275      - fix bug (avoiding division by zero)
1276    o couple pkg/thsice to pkg/seaice:
1277      - modify advection in seaice to accomodate new scalar fields to be advected
1278      - only muliDimAdection scheme work with seaice/thsice
1279      - mapping of thsice-variables to seaice-variables, back and forth
1280      - does not break the verification experiments, but does not give the
1281        desired results either
1282    o pkg/seaice
1283      - make (default) second order advection a bit less confusing?
1284    
1285    checkpoint58f_post
1286    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1287      to pkg/seaice):
1288      - new routines thsice_map_exf and thsice_get_exf provide the interface
1289      - add an additional formal parameter to thsice_solve4temp
1290    o pkg/exf:
1291      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1292      - correct Stefan-Boltzmann constant
1293      - new parameter for longwave surface emittance
1294      - separate some stuff from exf_bulkformulae into new routines  
1295        exf_radiation, exf_wind
1296      - add new parameters and constants: longwave emissivity for ocean, ice
1297        and snow, evaporation parameters over ice
1298      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1299        either wind from stress or stress from wind
1300    o pkg/thSIce:
1301    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1302    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1303       and THSICE_CALC_THICKN
1304    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1305    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1306      to make debugging easier.
1307    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1308    o pkg/bulk_force:
1309      - clean-up comments and parameters ;
1310      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1311    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1312      generate new output for test-experiment: aim.5l_cs.thSI
1313    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1314      testreport accordingly
1315    
1316    checkpoint58e_post
1317    o SEAICE_CGRID adjoint done
1318    o R_STAR adjoint implemented.
1319      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1320      * need to sort out init. of h0facc, etc.
1321    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1322      to be able to use it in pure forward.
1323    
1324    checkpoint58d_post
1325    o upgrade simple test-experiment to tutorial example:
1326     step.1: duplicate the experiment and (step.2) will remove the old copy.
1327      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1328      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1329      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1330      tutorial_global_oce_biogeo    <- copy of dic_example
1331      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1332      tutorial_plume_on_slope       <- copy of plume_on_slope
1333      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1334      tutorial_global_oce_optim     <- empty for now (David ?)
1335      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1336     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1337    o correct a sign problem in cost_scat.F
1338    o obcs and ptracers: fix boundary conditions for advections schemes
1339      with larger stencil
1340    o thsice adjoint: start
1341    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1342      completeness
1343    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1344      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1345    o ptracers adjoint:
1346      * avoid extensive recomputatations
1347      * fix missing re-init. of gptr (missed by TAF)
1348    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1349      me to turn off the excessive output to STDOUT that this package produces
1350    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1351      and add those terms in Vector-Invariant formulation.
1352    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1353      if the control period (xx_hfluxperiod etc) is 0
1354    o in profiles pkg, clean routines and fix details
1355    o in ecco pkg, reading ssh data:
1356      fix problem in case the model does not start at iter0=0
1357    o fix mnc-pickup/restart for ptracers
1358    o new package prifiles:
1359      code to compute profile-based cost by Gael Forget
1360      (modifs in ecco, ctrl, autodiff)
1361    o Benign bug fix in initialization (spotted by M. Mazloff) of
1362      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1363    
1364    checkpoint58c_post
1365    o adjoint: finish NLFS adjoint and provide reference output in
1366      verification/global_ocean.90x40x15/results_ad_nlfs
1367    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1368      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1369      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1370      with SEAICE_CGRID defined.
1371    o move calendarDumps from "data" to "data.cal" and clean-up the code
1372      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1373    o add useEXF & useCAL flags (for now, set in hard-coded way)
1374    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1375      (were missing in NH mode, and wrong in quasihydrostatic mode).
1376      waiting for Chris updated version of calc_gw to add those CALLs.
1377    o fix bug in quasihydrostatic S/R ;
1378      add a test for this option: global_ocean.90x40x15.qshyd
1379    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1380      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1381    o add on/off flag useOffLine for package OFFLINE
1382    o seaice:
1383      - modify advection so that it works also on the C-grid
1384      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1385        problem in multi-tile runs with C-grid
1386      - add flags for clipping ice velocities and/or masking solver forcing
1387      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1388        C-grid solver
1389      - added a few comments to seaice_diffusion.F
1390      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1391        are now exclusive)
1392      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1393        required re-ordering the code a little:
1394       + make DAIRN global variable (defined in SEAICE)
1395       + move computation of the viscosities eta and zeta into a new separate
1396         routine (because I need to recompute them in seaice_ocean_stress.F)
1397    
1398    checkpoint58b_post
1399    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1400      update output.txt of exp. aim.5l_cs.thSI
1401    o various mnc cleanups and improvements:
1402      + shrink lookup tables by factor of ~4
1403      + better error reporting when running out of lookup space
1404      + able to handle longer path/file names (up to 500 chars)
1405    o adjoint:
1406      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1407      - TBD: "hidden" mom_vecinv recomp. in dynamics
1408    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1409     (allow to differentiate between forcing components using new integer flags:
1410      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1411     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1412    o ecco
1413      - enable trend removal from SSH anomaly obs.
1414    o adjoint
1415      - a fix for PmEpR when #undef EXACT_CONSERV
1416      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1417      - try to fix "hidden" recomp. in forward_step for NLFS
1418        (NLFS seems broken sometimes after I checked it in)
1419    o seaice:
1420     - add c-grid version of the dynamic solver:
1421       + three new routines that are the c-grid substitute lsr, dynsolver
1422         and ostres
1423       + put a few fields that were local to dynsolver into global common
1424         blocks, so that I can move the computation of stresses etc into
1425         seaice_lsr (saves coding but may break the adjoint).
1426     - replace more hardwired parameters by runtime parameters
1427     - add ice masks that mask the rhs of the implicit solvers where there
1428       is no ice (commented out in seaice_dynsolver, because i am not sure
1429       if this works properly), eventually this should replace the clipping
1430       of ice velocities in seaice_dynsolver to +/-40cm/s.
1431    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1432      include it only where its needed
1433    o move balancing of fluxes before the call of external_forcing_surf
1434    o seaice:
1435      - correct units of turning angles (now they are really in degrees)
1436      - move computation of GWATX/Y out of main routine into dynsolver
1437      - initialize GWATX/Y in seaice_init
1438    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1439      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1440    o seaice: add runtime flags for turning angles (default to zero)
1441    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1442      and trend from exf forcing and ctrl control adjustments
1443    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1444      (since checkpoint57x_post)
1445    o change the default rotation period to 86164.s = the Earth rotation
1446    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1447      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1448    o seaice advection: add code for choosing between the default (2nd order
1449      central differences) and multiDim advection schemes provided by
1450      pkg/generic_advdiff
1451    o seaice:
1452      - removed all references to SEAICE_GRID.h fields from
1453        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1454        (cubed-sphere configuration will change a little)
1455      - grid computations in seaice_init are obsolete now.
1456      - cleaned up code a little so that is easier to read (hopefully).
1457      - added new (better?) discretizations of default advection and diffusion
1458        (turn on with SEAICEuseFluxForm)
1459      - replace 1 in 3d global fields by kSurface in growth.F
1460      
1461    checkpoint58a_post
1462    o seaice:
1463      - bug fix in advect.F
1464    o shelfice:
1465      - separate shelfice load anomaly from pload (breaks with time
1466        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1467        Its default is 0., but it may be computed more cleverly from (unknown)
1468        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1469        done offline. A good approximation of the pressure load anomaly is
1470        necessary to avoid large initial adjustment processes underneath
1471        deep-reaching shelfice.
1472      - small fix in ISOMIP shelfice_thermodynamics
1473      - add more sophisticated thermodynamics of Hellmer (1989), this is
1474        now the default
1475      - give a few constants more intuitive names
1476    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1477      if bulk formulae are used in long integration (especially EmPmR). Turn
1478      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1479      if balancePrintMean, the imbalance that is substracted is printed to
1480      STDOUT.
1481    o fix bug (typo) in obcs_apply_eta.F
1482    o add a new package shelfice which enables us to model the circulation
1483      underneath shelf-ice with draughts of hundreds of meters.
1484     - works
1485     - to do: + include improved thermodynamics
1486              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1487                instead of new field kTopC
1488              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1489                instead of new field R_shelfIce and new code in ini_depth.F
1490                and ini_mask_etc.F?
1491              + adjust vertical mixing schemes?
1492    o seaice pkg:
1493     - add a cpp-flag to include a simple formula for a salinity dependent
1494       freezing point of sea water at the surface
1495     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1496       meridional stresses are now different (and hopefully correct)
1497    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1498       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1499       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1500    o pkg/diagnostics: add options and parameters for regional-statistics
1501       diagnostics ; define regions by reading a region-mask from a file
1502       (might add other options later)
1503    o pkg/bulk_force:
1504     - add option and parameters to use AIM surface-flux formulae.
1505     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1506       others forcing fields (defined in PARM05, parameter file "data") are loaded
1507       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1508     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1509     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1510     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1511       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1512     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1513    
1514    checkpoint58
1515    o add "--embed-source" option to genmake2 which, when the supporting
1516      tools can be compiled (as determined by genmake2) will turn on the
1517      embed_files package which then embeds the entire MITgcm source code
1518      (*.[fFhc] + Makefile) used for the build within the executable
1519      - requested by CNH but off by default
1520      - adds a paltry <9MB to the mitgcmuv executable in most cases
1521      - only writes the output when useEMBEDSRC in eedata is true
1522    o clean up 3-dim. relaxation codes:
1523      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1524      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1525      * Thanks to Tom Haine for testing!
1526    
1527    checkpoint57z_post
1528    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1529      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1530    o fix the pickup behavior for obcs in combination with ptracers
1531    o fix a bug in ptracers_external_fields_load
1532    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1533      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1534    o transfered surface NH pressure to eta field (if exactConserv).
1535    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1536         and update lab_sea output.txt file.
1537    o completing 3-dim. relaxation code: additional term
1538         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1539      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1540      * At compile time, in "EXF_OPTIONS.h" set
1541          #define  ALLOW_CLIMTEMP_RELAXATION
1542          #define  ALLOW_CLIMSALT_RELAXATION
1543      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1544          tauThetaClimRelax3Dim = 15552000.0,
1545          tauSaltClimRelax3Dim  = 15552000.0,
1546      * 3 cases:
1547          1) Use a constant-in-time 3-dim. field
1548          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1549          3) Real-time relax. to time-evolving prescribed field
1550    o Adding Laplacian-type smoothness constraint on
1551      initial and boundary (forcing) controls (ic, bc)
1552      * enable at compile-time via
1553        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1554      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1555      * Absolute scale somewhat unclear so far
1556      * no area weighting was included since no other cost term does so far
1557    
1558    checkpoint57y_post
1559    First step for a NLFS adjoint
1560    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1561    o new init. routines for calc_r_star, calc_surf_dr
1562    o still need to deal with ini_masks_etc
1563    o testreport seemed happy
1564    checkpoint57y_pre
1565    
1566    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1567    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1568    o add new offset feature to offline pkg (plus minor cleanup)
1569    o cfc fixes for final year of integration
1570    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1571      be in GCHEM_OPTIONS).
1572    
1573    checkpoint57x_post
1574    o fix testreport Pb in multiple test experiment.
1575    o cleanup our namelist syntax in verification:
1576      - make it more F95 standards compliant (some work still needed)
1577      - allows the vast majority of our tests to work with gfortran
1578    o Non-Hydrostatic:
1579     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1580     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1581    o Allow to apply AB on T,S rather than on AB(gT,gS):
1582     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1583     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1584       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1585     - need a "clever" read_pickup to restart from the other AB formulation
1586    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1587    o remove some unused variables (reduces number of compiler warnings)
1588    o adjoint
1589      * Disable useVariableViscosity for adjoint for time being
1590        (there are a number of extensive recomputations)
1591      * Initialize certain variables needed for adjoint
1592    
1593    checkpoint57w_post
1594    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1595                 fix the singleCpuIO RS version of MDSWRITEFIELD
1596       and add a WARNING if using globalFiles=T with multi-processors.
1597    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1598      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1599    o tracer advection scheme:
1600      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1601       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1602       was not very convenient).
1603      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1604       (further tests needed for the implicit DST & Flux-Limiter schemes).
1605    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1606      and sRef for convenience, handy, when you want to initialize
1607      ptracers in a large domain with a constant non-zero value. Also,
1608      untangle ptracers_init.F a little.
1609    
1610    checkpoint57v_post
1611    o change dome exp. to use variable viscosity in side-drag terms.
1612    o remove all the files from the cfc_offline test since they are now
1613      incorporated into tutorial_cfc_offline which has been producing
1614      identical results for a few days of testing
1615    o add new parameter: sideDragFactor to enable half-slip-side BC
1616      and change side-drag S/R to use viscosity from mom_calc_visc
1617      (can switch back by setting sideDragFactor=0.); affects results at
1618      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1619       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1620    o vorticity & strain are now computed without masking, to account for
1621      no-slip-side BC in variable viscosity calculation ; mask is applied
1622      anyway later on, before computing advection/coriolis terms.
1623    o modify exp4 to test new obcs support for reading from external files
1624      and for passive tracers
1625    o fix behavior of ptracers_monitor when monitor output is written to a
1626      netcdf-file; still not independent of monitor.F (writes in the same
1627      file).
1628    o change default value of tRef (put a uniform, meaningful value for ocean
1629      & atmos) and initialize sRef (was missing, as Martin mentioned).
1630    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1631      to be proportional to enstrophy dissipation length.  Thus,
1632       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1633      This is now consistent with Smagorinsky and with the manual.
1634    
1635    checkpoint57u_post
1636    o OBCS and PTRACERS: add open boundary support for passive tracers
1637      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1638        OB-values from file; this is not different from the way theta and salinity
1639        are treated
1640      - however, Orlanski-radiation conditions are not supported, and the model
1641        will stop if you use pTracers and Orlanski at the same time.
1642      - beefed up the rountine obcs_external_fields_load: now only those open
1643        boundary values are overwritten with values from files for which there
1644        are really files, otherwise the OB-fields remain untouched. This makes
1645        it possible to use different OBs at different ends of the domain (as
1646        with EXF)
1647    o reduce number of exch calls in shap_filt (s2).
1648    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1649      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1650    
1651    checkpoint57t_post
1652    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1653    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1654      same truncation, independent of the face number: affects affects several
1655      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1656    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1657      note that biharmonic viscosity + no-slip was not tested in any experiment.
1658    o fix bug in non-linear free-surf side-drag ; generate new output for
1659      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1660    o make mnc honor the writeBinaryPrec flag for most kinds of output
1661    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1662    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1663      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1664    o add brackets in multi-terms sum to get same truncation, independent of
1665      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1666      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1667    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1668      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1669      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1670      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1671      Suggested values of viscosity parameters found in mom_calc_visc.
1672      Many new viscosity diagnostics available.
1673    
1674    checkpoint57s_post
1675    o Add clearing-house for viscosity calculations, mom_calc_visc and
1676      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1677      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1678      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1679      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1680      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1681      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1682      ViscAhStrain and viscAhTension are now retired.
1683    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1684    o In response to JMC's bug report, genmake2 now ignores any soft-links
1685      that it finds in the *current* directory when searching for files.
1686      Soft-links found in any other source directories will still work as
1687      they did before.
1688    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1689      a C routine to unlimit the stack size
1690    o mnc-ify pkg/aim snapshot vars
1691    o mnc-ify pkg/land as requested by Daniel
1692    o various changes to mnc including:
1693      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1694      - output can now be grouped so that all files within a group
1695          change the ITER portion of their names in lock-step together
1696      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1697          and works with both EXCH1 and EXCH2 (but needs more testing)
1698      - writing works for all verification test cases w/ g77 on Linux
1699    
1700    checkpoint57r_post
1701    o make MNC variable initialization happen earlier
1702    o add diagnostics for (almost) each term of the momentum Eq.
1703    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1704    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1705    o remove MINIMAL_TAVE_OUTPUT option ;
1706      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1707    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1708      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1709    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1710    o add time-dependent SST, SSS control
1711    o cost terms in ecco/ modularized (new cost_generic.F)
1712    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1713    o new infrastructure for seaice model vs. obs misfits in seaice/
1714      * driver from the_main_loop.F is seaice_cost_driver.F
1715      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1716      * gradient check in Exp. 6a of natl_box_adjoint/
1717    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1718      (see README file)
1719    
1720    checkpoint57q_post
1721    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1722    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1723      - bug was reported by Jean-Michel and Ian Fenty
1724    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1725      update exp. cpl_aim+ocn output.
1726    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1727      Needed for high-res. runs with large global files
1728      to be able to limit tapelev size
1729    o Changed some tests for adjoint:
1730      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1731      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1732      * global_ocean.90x40x15/ back to default 3-level checkpointing
1733    o Modifications to enable scripted COMMON to MODULE conversion
1734      * verification/OpenAD/code/ has necessary scripts and description;
1735      * converts, compiles and runs successfully;
1736    
1737    checkpoint57p_post
1738    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1739    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1740      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1741    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1742    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1743      (was already the case for dissipation with mom_vecinv,
1744       and also the case for grad.PhiHyd when staggered-timeStep)
1745      This will allow to put dissipation out-off the AB time-stepping.
1746     Unfortunately, affects truncation error. Update output of exp. that "fails"
1747      (cg2d matching number) and leave the others for later: front_relax(10),
1748      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1749      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1750    
1751    checkpoint57o_post
1752    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1753      (2) its ready to be documented during the 20050801 DocFest
1754    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1755      for ideal_2D_oce and lab_sea on linux_ia32_g77
1756    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1757      in global1x1_tot/code_seaice_adj to access indices 32, 33
1758      (worth another tag)
1759    
1760    checkpoint57n_post
1761    o adding precip control xx_precip 32
1762    o adding swflux control xx_swflux 33
1763    o Replacing 10 forcing penalty cost routines by 1 generic.
1764    o Implementing partitioning in time-mean and variable adjustment
1765      for atmos. state.
1766    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1767  o in natl_box_adjoint:  o in natl_box_adjoint:
1768    * updated: results_bulk/    * updated exp 1 to 10
1769    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1770    o updated global1x1/*_seaice_adj/
1771      to incorporate latest changes
1772    o enable useSingleCpuIO for mdsio vector routines
1773      (applies in particular to tapelev I/O)
1774    o removed inefficient K-loop in all active_file*control*.F
1775    
1776  checkpoint57m_post  checkpoint57m_post
1777  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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