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revision 1.137 by jmc, Wed Feb 26 03:29:08 2003 UTC revision 1.1064 by mlosch, Thu Feb 12 07:53:34 2009 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  untagged  o model/src/ini_curvilinear_grid.F: check in hack for SX8 compiler
8      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:
1768      * updated exp 1 to 10
1769        (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
1777    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1778      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1779    o pkg/exch2: filling of face-corner halo regions is optional
1780      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1781    
1782    checkpoint57l_post
1783     tag before updating tutorials (pre-release-2)
1784    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1785       for output and interpolation of input fields onto model grid)
1786    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1787       Affects results of exp. rotating_tank ; update output.txt.
1788    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1789          and taking the square quantity and/or using a fraction-weight field.
1790    o fix aim_diagnostics_init.F mate numbers.
1791    o add mnc output capability to diagnostics/diagstat and update
1792      our cvsignore files for the ACSII output generated
1793    
1794    checkpoint57k_post
1795    o lab_sea now uses diagnostics package and provides a suite of
1796      new EXF diagnostics output.
1797    
1798    checkpoint57j_post
1799    o exf
1800      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1801        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1802        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1803      * extended diagnostics output
1804        - now includes all EXF variables
1805        - hs, hl moved to common block
1806        - separate S/R for diagnostics, called after ctrl vector is added
1807        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1808        - EXFqnet contains true Qnet (i.e. includes qsw)
1809      * updated verif. lab_sea, global_with_exf
1810      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1811        to ensure that diagnostics sees a true EXFqnet
1812    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1813    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1814      several times with different frequencies.
1815    o mnc-ify the thsice package as requested by Daniel Enderton
1816      - the monitor--MNC output needs work
1817      - many attributes need to be added (most are currently blank)
1818    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1819      - many attributes need to be added (most are currently blank)
1820    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1821    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1822    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1823      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1824         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1825    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1826     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1827    
1828    checkpoint57i_post
1829    o Diagnostics package was changed: diagnostic allocation is now deactivated
1830      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1831    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1832      add 1rst Order upwind vertical Shear.
1833    o add a quick fix for A/B checkpointing in OFFLINE mode
1834    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1835      end-run around the C/Fortran linking horror in eesup/src/timers.F
1836    o added pkg/runclock: allows user to terminate run based on wall clock
1837    o added non-hydrostatic scaling parameter: nh_am2
1838    o pkg/my82: futile attempt to make results compiler-independent by adding
1839      some "_d 0", etc. no effect.
1840    o for mnc output, fill the 'T' coordinate var with myTime and create a
1841      separate 'iter' variable for iteration count
1842    o pkg/diagnostics:
1843      add new capability: output of Global/Regional & per-level statistics ;
1844      tested against monitor output (including land & thSIce) on various exp.
1845    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1846    
1847    checkpoint57h_done
1848      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1849      data.diagnostics, data.gchem, data.ptracers) is done.
1850    
1851    o pkg/diagnostics: prepare for Global/Regional statistics.
1852      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1853    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1854      and rename it: DIFFERENT_MULTIPLE
1855    
1856    checkpoint57h_post
1857    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1858    o pkg/diagnostics: change output frequency, now in seconds (instead
1859      of Nb of iterations). This requires to change data.diagnostics.
1860    checkpoint57h_pre
1861    
1862    o in mnc, let the user create the output dir if both mnc_outdir_date
1863      and mnc_outdir_num are false
1864    o add fflags() to pkg/diagnostics which allows one to specify, on a
1865      per-file basis, the file precision [default behavior is unchanged]
1866    o added diagnostics to pkg/kpp, including computation of mixed layer
1867      depth based on a temperature/density criterion
1868    o updated verification/natl_box to test the new pkg/kpp diagnostics
1869    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1870    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1871    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1872      not mnc -- this mistake was found by JMC and is now corrected
1873    
1874    checkpoint57g_post
1875    o add Adams-Bashforth 3rd Order time stepping:
1876      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1877      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1878    checkpoint57g_pre
1879    
1880    o make lambda[Theta,Salt]ClimRelax spatially varying
1881      (default remains spatially uniform constant based on tau)
1882    o added new control variables
1883      * init. uVel, vVel, etanN
1884      * lambda[Theta,Salt]ClimRelax
1885    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1886      (suggested by G. Forget)
1887    
1888    checkpoint57f_post
1889    o add parameter "baseTime" = model base time = time at iteration zero
1890      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1891      account for baseTime shift
1892    o move Coriolis arrays from PARAMS.h to GRID.h
1893    checkpoint57f_pre
1894    
1895    o mnc-ifying the seaice package
1896    o introduced an alternative length scale calculation for use in the limiting
1897      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1898    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1899    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1900      as well as grad(vort3).  Made it compatible with both approximate form
1901      for the cubed sphere and full form of these gradients.  Added flag
1902      useFullLeith to select between approximate and full form.  
1903    o add "d0" in getcon.F to reduce differences between compilers/platforms
1904      update output.txt of exp. fizhi-gridalt-hs
1905    o change port_rand funtion to allow to set the seed.
1906    o fix obscure MNC bug involving conversion between reals and integers
1907      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1908        new version is now more standards-compliant
1909    o adjoint-related modifications
1910      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1911      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1912      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1913    
1914    checkpoint57e_post
1915    o Adding eddy stress controls a la Ferreira et al.
1916    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1917    
1918    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1919      update output.txt of exp. fizhi-gridalt-hs
1920    o add more "Z" dimensions and associated coordinate vars to MNC
1921    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1922    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1923      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1924      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1925      months and years.  Requires pkg/cal.
1926    o diagnostics: add pickup functionality
1927      - off by default for backwards compatibility
1928      - current version only uses MDSIO -- MNC will be added
1929    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1930    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1931    
1932    checkpoint57d_post
1933    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1934    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1935      output from the diagnostics package
1936    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1937    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1938      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1939    o add coordinate variables to the MNC output from the diagnostics package
1940    o change MNC-flags default value: true when useMNC=TRUE
1941    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1942      the ability (off by default) to read the grid information using MNC
1943    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1944    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1945    o do snap-shot diagnostics at the middle of the time-interval (instead of
1946      at the end).
1947    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1948      new test for AIM with thSIce + slab-ocean
1949    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1950    o move state variable diagnostics to the beginning of the time step ;
1951      (note: still needs some work specially for snap-shot diagnostics)
1952      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1953    
1954    checkpoint57c_post
1955    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1956    o generate new output.txt files on faulks with g77 & the new -ieee option
1957    checkpoint57c_pre
1958    
1959    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1960      update output.txt of exp. global_ocean.90x40x15
1961    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1962      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1963    o add saltFlux(+File) forcing capability with periodicExternalForcing
1964    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1965    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1966    o improvements for the MNC output from DIAGNOSTICS:
1967      - correct handling of the unlimitied dimension
1968      - all dims now have associated coordinate variables
1969      - variables located at U, V, and Corner ("Z") points are now written
1970        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1971        *all* data points are output
1972    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1973    o added pkg/seaice/seaice_monitor.F
1974    o mdsio_readfield.F can now read files visible only to master MPI process.
1975    o pkg/seaice: some test code for ice-modified ocean stress
1976    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1977      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1978      spurious negative numbers for precipitation and humidity.  Will cause
1979      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1980    o pkg/ctrl/
1981      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1982        May be enabled via doPackDiag
1983      *  introduce z-scaling of
1984         + gradient (doZscalePack) and
1985         + control (doZscaleUnpack)
1986    o pkg/mdsio/
1987      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1988      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1989    
1990    checkpoint57b_post
1991    o simplify options in diagnostics_fill arguments (remove weird combinations)
1992    o fix MNC coordinate variables so that they now contain per-face index
1993      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1994      general, EXCH2 grids are only aligned to a "local" coordinate system
1995    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1996    o Implement instantaneous output within pkg diagnostics:
1997      setting a negative frequency in data.diagnostics produces
1998     "snap-shot" output (as opposed to time-average if freq > 0)
1999    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2000      NOTE: change ptracer diagnostics name: use 2 characters to work with
2001            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2002    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2003      becomes the coordinate variable for the 'T' dimension
2004    o add CF-style coordinate variables to MNC
2005      - just a first cut:  numbers are meaningless on the cubesphere and
2006        missing along the T axis but otherwise it works!
2007    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2008    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2009    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2010      this is based directly on what the model compute, so that the content of
2011      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2012    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2013    o clean up build options files for SunOS, in particular
2014      - remove -traditional from xmakedepend
2015      - change -xarch=v9 to -xarch=native for f77
2016      - restore use of make (not gmake)
2017      - add CC=gcc if using g77
2018    o changes per discussion of AM, JMC, & EH3 today:
2019      - move redundant "grid" variables out of "state" -- in preparation of
2020        creating proper CF-style coordinate variables and in recognition
2021        that any/all grid variables can be easily copied (eg. w/NCO) from
2022        the grid files into any of the other NetCDF files
2023      - *always* output grid variables with MDSIO (this will eventually be
2024        changed)
2025      - output MNC grid file if useMNC is true
2026    o every instance of _END_MASTER() has been found and replaced with
2027      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2028      preprocessors
2029    o re-arrange diagnostics pkg initialisation:
2030     - allow each package to extend the available diagnostics list
2031     - add some checking and fix small problems (multi-threaded, ...)
2032     - new S/R diagnostics_fill (replace fill_diagnostics):
2033       look through the short list of active diag. (instead of the long list)
2034       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2035    
2036    checkpoint57a_post
2037    o this set of changes restores TAMC compatibility
2038      tested for global_ocean.90x40x15 adjoint on trough
2039      (what a pain)
2040    
2041    checkpoint57a_pre
2042    o some modifs in tools/build_options for sunos
2043    o call ctrl_pack for ctrl at end for optimcycle=0
2044    
2045    checkpoint57
2046    o add horizontal bi-harmonic viscosity for vertical velocity
2047      - new parameter viscA4W (defaults to viscA4)
2048      - affects only non-hydrostatic code
2049      - to be done: no-slip lateral boundary conditions
2050    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2051    o implement Implicit Vertical advection for pTracers
2052    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2053      (implemented also for implicit vertical diffusion & advection)
2054    o OBCS: extend application of tracer open boundary conditions
2055      to a strip beyond the boundary of width Olx/Oly
2056    o add call monitor to TAF set of required calls (flow directives)
2057      and include in natl_box_adjoint
2058    o untangle a few ifdefs related to cost, ctrl, autodiff
2059      untangel a few ALLOW_ECCO_OPTIMIZATION
2060    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2061      (theta2, salt2 in ecco_cost_weights)
2062    
2063    checkpoint56c_post
2064    o OBCS as control variables
2065      - update ctrl_ad_diff.list, obcs_ad_diff.list
2066      - remove balance of obcs controls from default
2067      - fix index bug nobcs in ctrl_init
2068      - fix dummy fields filen in ctrl_pack
2069      - add dummy weights for obcs
2070    o lsopt: comment out fort.94 output
2071    o optim:
2072      - remove unnecessary header files
2073      - adjusted namelists
2074      - add xerbla.F to Makefile
2075    o exf:
2076      - multiple modifications of exf_check_range
2077      - unit change in exf_init_runoff from [m/year] to [m/s]
2078    o mdsio:
2079      - i/o-vector change debugLevel from debLevA to debLevB
2080    
2081    checkpoint56b_post
2082    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2083      is called from DO_THE_MODEL_IO
2084      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2085      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2086      - clean up PTRACERS_WRITE_TIMEAVE a little
2087    o add another verification experiment that tests both the cfc-pkg and
2088      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2089      reactive tendencies treated inline with regular timestepping
2090    o testreport previously did a lousy job of comparing small numbers, so
2091      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2092      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2093      testreport.
2094    o ptracers_monitor: bug fix for MPI
2095    
2096    checkpoint56a_post
2097    o GCHEM: finish reorganizating the package
2098      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2099        (introduces another 3D-array for each passive tracer, but only if
2100        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2101        gchemTendency is not needed because the timestep is done separately)
2102      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2103      - GCHEM is now---more or less cleanly---separate from PTRACERS
2104      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2105        so clear to me how that should be done in a general way.
2106    o CFC: improve formatting of output in CFC_ATMOS
2107    o PTRACERS:
2108      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2109        that ALL experiments with ptracers enable can be checked. This makes
2110        GCHEM_MONITOR obsolete.
2111      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2112        monitorFreq
2113      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2114    o add PTRACERS (PTR0[1-5]) to testreport output
2115    o exf_check_range:
2116      * default changed to .TRUE.
2117      * will check values for niter0 if debLevA, every timestep if debLevB
2118      * STOP in exf_check_range if 'out of range'
2119      * range chosen generous to allow for potential extema
2120      TBD: a version with stricter range
2121           permitted range would be runtime parameters
2122    o GMredi:
2123      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2124      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2125      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2126    o GCHEM:
2127      - move call to GCHEM_FORCING_SEP, so that it is now called before
2128        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2129      - introduced a useGCHEM runtime flag and applied it everywhere.
2130      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2131        this flag is now only visible within GCHEM-pkg routines.
2132      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2133        be replaced by a 3D array that is computed before thermodynamics; for
2134        this, the tracer ID iTracer had to be included into the parameter list
2135        of ptracers_forcing
2136      - set up forward_step to call gchem_forcing, that will replace
2137        gchem_forcing_int in ptracers_forcing
2138      - cleaning up
2139    o small cleaning of exch2: remove files that are also in eesupp/src
2140    
2141    checkpoint56
2142    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2143    o mnc: cleanup "full" files--fixes out-of-memory problem
2144    o ECCO-GODAE
2145      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2146      * fully merged and updated from SIO code
2147        windstress sign change affects
2148        - exf_inscal_[u/v]stress
2149        - sign of xx_tau[u/v] adjustments
2150        - signs in cost_scat
2151      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2152      * natl_box_adjoint updated and compressed
2153      * 2-level checkpoint switch added
2154        (tested in EXP. 1 of natl_box_adjoint)
2155      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2156    o SVD
2157      * first complete, non-hacked version for SVD calculations
2158      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2159        performed via direct access files admtlm_vector.it????
2160        (via ctrl_[un]pack)
2161      * optimcycle is used for ARPACK iteration counter
2162        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2163      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2164        and add linear transforms where necessary
2165      * controls are initial/final SST, SSS (can be extended; need to check
2166        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2167    o mdsio: filename info to both stderr, stdout
2168    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2169      from sign change
2170    
2171    checkpoint55j_post
2172    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2173      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2174    o add consistent build directories and .cvsignore files to verification
2175    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2176    o make all subroutines 30 or less characters in length for certain older
2177      compilers to work (a thorough search only turns up two routines in
2178      pkg/ptracers)
2179    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2180      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2181    
2182    checkpoint55i_post
2183    o change arrays for total vertical diffusivity (2.D if explicit,
2184      3.D if implicit) ; each ptracer uses its own background value.
2185    o added mnc/NetCDF output capability to ocn_compon_interf
2186      - added bits to verification/cpl_aim+ocn so that it can run on
2187        ITRDA and other clusters without the mpirun "-wd" option
2188    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2189      configuration
2190    o give MNC the ability to create additional files rather than
2191      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2192      - the default is just less than 2GB which is a practical limit
2193        on many systems
2194    o Compute the non-local term using either KPP vertical diffusivity (=default)
2195       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2196    
2197    checkpoint55h_post
2198    o add verification test "vermix"
2199    o remove all the *_ioinc flags and replace with the single global
2200      outputTypesInclusive flag
2201    o allow to set a vertical profile of vertical diffusivity for T & S
2202    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2203    o useMNC moved from data.mnc to data.pkg
2204    
2205    checkpoint55g_post
2206    o Renaming carbon AD experiments to comply with testreport conventions
2207    o Updating adjoint of Held-Suarez hs94.1x64x5
2208    o Fixing directives for non-ECCO forward_step, after ECCO directives
2209      have been fixed to avoid recomp. of do_oceanic_phys
2210      Works well for global_ocean.90x40x15,
2211      but recomp. issue remains for carbon
2212    o Updating adjoint output for natl_box_adjoint after
2213      pkg/ecco has been modified (see taga c55d_post)
2214    
2215    checkpoint55f_post
2216    o rename to timeave_init_fixed
2217    
2218    checkpoint55e_post
2219    o some delicate re-shuffle of store directives to avoid one
2220      extra call of do_oceanic_physics
2221      affects ecco_the_main_loop.F, do_oceanic_physics.F
2222      checkpoint_lev1_directives.h
2223    o NB: this may break global_ocean adjoint temporarily,
2224      but it is clear how to fix it. Will do later, need this now.
2225    
2226    checkpoint55d_post
2227    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2228    o ecco_cost_weights is modified to 1x1 runs
2229    o modifs to allow observations to be read in as
2230      single file or yearly files
2231    o enable to read exf forcing fields as either
2232      single file or yearly files (flag useExfYearlyFields)
2233    checkpoint55d_pre
2234    
2235    o switch between 2-level and 3-level checkpointing
2236    o add ability of MNC to write local and "partial" (eg. 2D slices where
2237      the full 3D field is never actually stored) arrays to NetCDF files
2238      with the correct (that is, the complete multi-dimensional) set of
2239      array indicies
2240      - used in mom_vecinv() to write the diagFreq output
2241      - tested (demonstrated) in verification/aim.5l_cs
2242    o further mnc-ification
2243      - add verification/lab_sea to the list with mnc setups
2244      - fix undefined mnc v-names in cd_code
2245      - add kpp to mnc output (both snapshot and timeave)
2246    o non-hydrostatic code
2247      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2248        in calc_gw.F
2249      - defaults to viscAh
2250      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2251        friction or Leith) in non-hydrostatic mode, as long as there is
2252        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2253    o pkg/cost
2254      extend simple cost functions to treat time mean quantities
2255      (T,U,V) via cost_accumulate_state from cost_tile
2256    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2257        be 2 times larger than the minimum size the advection scheme requires.
2258        now get a perfect conservation of salt in advect_cs test-exp (updated)
2259    o GGL90 (Gaspar's TKE mixed layer)
2260      - add horizontal diffusion of TKE, requires exchanges in
2261        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2262        default. In OPA there is no horizontal diffusion of TKE but the
2263        mixing coefficients are computed from a horizontal average of TKE of
2264        6 points or so. I think that diffusion has a little more physical
2265        justification.
2266      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2267        was in vain)
2268      - mask tke-variable in ggl90_init
2269    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2270    o fix biharmonic diffusion on CS-grid.
2271    o more obcs stuff
2272      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2273        for reading boundary values. This routine is called from
2274        obcs_prescribe_read
2275      - updated obcs_check
2276      - changed sponge layer relaxation parameter units for days to seconds
2277      - turned off sponge layer by default
2278      - changed argument list of OBCS_CALC to myTime+deltaTclock
2279      - fixed about 35 bugs in obcs_external_fields_load
2280    
2281    checkpoint55c_post
2282    o obcs stuff
2283      - new runtime flags useOBCSprescribe, useOBCSbalance
2284      - re-arranged obcs_calc
2285      - moved exf_getobcs to obcs_prescibe_read
2286        obcs_prescibe_read is called after ORLANSKI stuff
2287        and independent of it (executable can contain all).
2288      - updated obcs_check
2289      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2290        These may be necessary only if tangential velocities are
2291        prescribed at OB, not sure, needs testing.
2292    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2293      which simplifies the calls and passes the ifc check-bounds test
2294    
2295    checkpoint55b_post
2296    o add a 2D scalar, Z location, exchange_2 routine.
2297    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2298      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2299      affects advect_cs results (for the wrong reason): update output.txt
2300    o use a more standard discretization for biharmonic viscosity ;
2301     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2302      affects results of dome set-up: update output.txt
2303    o fix gad_advection.F (CubedSphere part), back to version 1.23
2304    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2305    
2306    checkpoint55a_post
2307    o merged code to
2308      * prescribe/read time-dependent open boundaries
2309        (works in conjunction with exf, cal)
2310      * sponge layer code for open boundaries
2311      * each boundary N/S/E/W now has its own CPP option
2312        (healthy for the adjoint)
2313    
2314    checkpoint55
2315    o up-to-date adjoint of previous breaks
2316      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2317      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2318      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2319      - carbon: * remove tr1-related adjoint verification
2320                * add ptracer as control variable
2321    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2322      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2323    
2324    checkpoint54f_post
2325    o in verification/carbin/ remove experiment related to
2326      ALLOW_PASSIVE_TRACER (array tr1 etc)
2327      code_ad/ input_ad/ results_ad
2328    
2329    o add two new packages
2330      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2331        + subject to optimization (memory)
2332      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2333        + subject to reordering (many GOTOs in the original code)
2334        + so far opps is called for every (i,j) point, and then operates in
2335          the vertical; one may want to reorder the scheme in order operate in
2336          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2337          fields)
2338    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2339      - all verification tests compile and run with linux_ia32_g77
2340      - defaults are compatible with current input files--nothing
2341        should change if you were not previously using MNC
2342      - MNC output has been added in numerous places (eg. timeave)
2343        but there are still a few writes not yet do-able with MNC
2344        (this is in progress)
2345      - flags now allow for either/or/both use of MDSIO and MNC and
2346        documentation will soon follow
2347      - numerous small formatting cleanups for ProTeX
2348    o add version info (via BUILD_INFO.h) to MNC and stdout
2349    
2350    checkpoint54e_post
2351    o add two new packages
2352      - pp81 (Packanowski and Philander, 1981), Richardson number and
2353        stratification dependent mixing
2354      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2355      - these scheme operate in a similar manner as KPP (without ghat, of
2356        course), however there is only one diffusivity that is used for both
2357        temperature and salinity (and passive tracers)ç
2358    o add offline package
2359    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2360      provided by Stephanie Dutkiewicz
2361    o genmake2: add ability to search for C compilers and cleanup test output
2362      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2363    
2364    checkpoint54d_post
2365    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2366    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2367      leading to additional shift by 5 days each year of integration
2368       (i.e. leading to considerable offset over the years)
2369    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2370    o start with no AB and no initial filtering (staggerTimeStep):
2371      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2372    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2373      (external loading & cpl import/export stay in forward_step.F)
2374    o update coupling interface to work with new staggerTimeStep
2375    o change MDSIO ptracers_pickup.
2376    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2377    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2378    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2379    
2380    checkpoint54c_post
2381    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2382      this affects (truncation error) output.txt of test-exp:
2383       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2384    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2385    o change Qnet to always be the net heat flux, (+upward).
2386      affects (truncation error) output of natl_box exp.: updated
2387    o define the max number of passive tracers in PTRACERS_SIZE.h
2388    o start to test mnc routinely in exp0
2389    o add sea-ice loading (sIceLoad) as a new forcing field.
2390    
2391    checkpoint54b_post
2392    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2393       impressive on Altix and Opteron systems)
2394    o diagnostics can now write NetCDF files through the mnc package
2395    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2396    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2397    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2398      affects (truncation error) output of lab_sea & natl_box exp.: updated
2399    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2400    
2401    checkpoint54a_post
2402    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2403    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2404    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2405    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2406      + internal_wave (shift in writing cg2d_ini_res)
2407    checkpoint54a_pre
2408    
2409    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2410      - modified verification/lab_sea and natl_box_adjoint accordingly
2411    
2412    checkpoint54
2413    checkpoint53g_post
2414    o prepare splitting of thermodynamics: store convect.counter in common block
2415    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2416      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2417    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2418    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2419    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2420    o restore adjointability
2421    
2422    checkpoint53f_post
2423    o modifications that affect AIM experiment results (update output.txt):
2424      - no advection of S at top interface Nr (pkg/generic_advdiff)
2425      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2426    o AIM pkg:
2427      - include stability function into surf.Flux derivative relative to Tsurf
2428      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2429    
2430    checkpoint53e_post
2431    o merged cylindrical coord configuration
2432    o added rotating_tank experiment
2433    checkpoint53e_pre
2434    
2435    checkpoint53d_post
2436    o faulks upgraded: re-generate output.txt that have changed:
2437       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2438    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2439    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2440    o added Sadourny discretization of Coriolis
2441      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2442      - re-enabled use of omega3 (useAbsVorticity)
2443    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2444      vector-invariant equations
2445      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2446    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2447      hopefully without new bugs
2448      - still to do: biharmonic friction for non-hydrostatic w
2449    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2450    o regenerated output for global_ocean_ebm (using -ieee)
2451    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2452      of mom_common/
2453      - simple re-arrangement of instructions within computing loop
2454    checkpoint53d_pre
2455    
2456    checkpoint53c_post
2457    o new version of coupler for AIM+thSIce and Ocean models
2458     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2459     - land: change Evaporation of snow
2460     - aim with thSIce: fix bug in snow-precip.
2461    o changes to calc_gw.F
2462     - bug fix for w^2 term near the bottom boundary
2463     - (hopefully) improve the lateral slip boundary condtions for use with
2464        partial/looped cells
2465      - because the bug fix changes two verification experiments anyway (exp5
2466        and plume on slope), change the lateral boundary condition from half slip
2467        to the value of no_slip_sides
2468    o ebm package wasnt quite up to the parallel task. Fixed that.
2469    o Adjoint of EBM package + verification
2470      * TLM OK
2471      * ADM not sufficient accuracy yet (needs further testing)
2472    
2473    checkpoint53b_post
2474    o Commiting new energy balance model to repository
2475      * package is pkg/ebm
2476      * verif. is verification/global_ocean_ebm
2477      * references are in ebm_driver.F
2478    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2479    C        Global thermohaline circulation. Part I:
2480    C        Sensitivity to atmospheric moisture transport.
2481    C        J. Climate 12(1), 71-82
2482    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2483    C        Global thermohaline circulation. Part II:
2484    C        Sensitivity with interactive transport.
2485    C        J. Climate 12(1), 83-91
2486    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2487    C        Destabilization of the thermohaline circulation
2488    C        by atmospheric eddy transports.
2489    C        J. Climate 7(12), 1870-1882
2490    o Will need long integration testing.
2491    checkpoint53b_pre
2492    
2493    o created pkg/mom_common in preparation for variable viscosity code
2494    o renamed and split ini_mnc_io
2495    o pkg/land: only liquid water can diffuse or run-off
2496    o AIM using land: soil wetness availability account for snow
2497    o added printMapIncludesZeros to EEPARMS namelist
2498    
2499    checkpoint53a_post
2500    o restore TAMC compatiility for exf_constants.h
2501      (no usage of _d in .h)
2502    o Additional storing in KPP in an attempt to fix
2503      TAMC problem with adjoint of KPP code.
2504      (no success...)
2505      Identical code works fine with TAF.
2506    o Fixed verification/natl_box_adjoint experiments.
2507      Initial conditions for Experiments 4 and 5 are now
2508      set to "SEAICE_initialHEFF=0", which is more reasonable,
2509      and hence gives results closer to that of Experiment 2.
2510      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2511    
2512    checkpoint53
2513    o stable checkpoint with up to date adjoint
2514      TLM tests only run for 1st grdchk at the moment. Its unclear if
2515      this is a code problem or a problem with resetting code for g_
2516      variables that is being autogenerated wrong.
2517      Otherwise:
2518       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2519       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2520         are both still in chaos following their security messes.
2521    
2522    checkpoint52n_post
2523    o various build (mostly genmake2) changes including:
2524      - ability to build/run more easily within Cygwin and MacOS X
2525      - more complicated Makefiles with a stronger dependence on Gnu Make
2526    o pkg/seaice modifications
2527      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2528        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2529        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2530      - changed proxy for geostrophic velocity and updated
2531        verification/lab_sea/results/* accordingly
2532      - removed ADI dynamic solver from pkg/seaice
2533      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2534        they caused a segmentation fault under certain circumstances
2535      - removed unused field WATR
2536    o bug fix in exf-package:
2537      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2538         now reflect that.
2539    o small fixes in the cal-package:
2540      - set reference date to first of January for the 'model'-calendar
2541      - failing of cal_CheckDate in cal_FullDate now actually results in a
2542        warning
2543    o small modifications in exf-package to increase flexibility:
2544      - change climtempfreeze from a constant to a runtime parameter that
2545        is specified in data.exf_clim (default = -1.9)
2546      - introduce runtime parameter windstressmax (default = 2.0) that is
2547        specified in data.exf
2548    o fix in pkg/thsice:
2549      - update Evap (Tsf changes) to be consistent with Latent heat flux
2550      - maintain snow precipitation unchanged (even if Tsf >=0).
2551     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2552    
2553    checkpoint52m_post
2554    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2555      this does not change any of the results, because myIter=0 in swfrac always
2556      lead to jwtype=2 (the default anyway), but the call makes little sense
2557      as a default
2558    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2559    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2560      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2561    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2562    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2563    o extending useSingleCpuIO option to work with new exch2 I/O format
2564      - old-style, missing-tile I/O is still accessible by defining CPP
2565        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2566    o monitor package can write to NetCDF files and/or STDOUT
2567    o fix re-definition bug in MNC_GRID_INIT_ALL()
2568    o doc/api_reference added
2569      - a framework for building an API Reference Manual using all
2570        the "protex" comments embedded in the code
2571      - see pkg/generic_advdiff, pkg/mnc for examples
2572    o MNC:
2573      - make myThid the last argument for all subroutines
2574      - new default for the grid files: NO halos
2575      - add useMNC and other run-time flags
2576      - separate per-file-group handling of the unlimited dimension
2577      - early initialization of MNC w/ flags read at the eeboot stage
2578        and lookup tables set in initialize_fixed
2579      - write all MNC output to a freshly-created directory
2580    o thermodynamics sea-ice (thsice) is now tested with testreport.
2581    o test exp. advect_cs: use the standard cs32 grid ; update output.
2582    o Added functionality to grdchk:
2583      pick global i,j,k position (or nearest wet) where to perform check.
2584    
2585    checkpoint52l_post
2586    o new land formulation:
2587      a) use ground enthalpy as prognostic variable to ensure exact
2588         energy conservation.
2589      b) account for water temperature and for latent heat of freezing
2590         in all processes (rain, run-off, ground storage)
2591      c) compute surface and ground temperature implicitly.
2592    o aim_v23 modification for new land model:
2593      a) Treat separately land / ocean / sea-ice surface fluxes
2594         to allow implicit computation of land & sea-ice surface temp.
2595      b) add snow precipitation.
2596    checkpoint52l_pre
2597    
2598    o fix problem (when 1 tile is empty) in min/max monitor.
2599    o fix bug in timeAve (u,vZetatave in common block)
2600    o no restoring terms under ice for pkg/seaice
2601    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2602    o bug fix for pkg/seaice pickups
2603    o change MNC call locations and add coordinate attributes
2604    o mask vorticity at the corner ; affects global_ocean.cs output
2605    o fix ini_curvilinear_grid ; test CS experiments with mpi
2606    o aim.5l_cs: modify sea-ice fraction input file ; update output
2607    o exf: Adding simple range check routine for exf fields after read
2608    
2609    checkpoint52k_post
2610    o removed top-level directory "diags"
2611      - we migrated these functions to pkg/timeave a long time ago
2612    o fixed bug introduced in pkg/monitor
2613    o accuracy ctrlprec = 32 insuffient for gradient checks using
2614      averaged fields (I/O via cost_averages)
2615      -> use ctrl.h in active_file*.F to control I/O precision.
2616    o paramter list of CALL ADTHE_MAIN_LOOP
2617    o added initial do_the_model_io to ecco
2618    o set all ...Freq to zero after cost_final
2619      taveFreq, dumpFreq, pChkptFreq
2620    o MAIN and ECCO differentiability restored
2621    
2622    checkpoint52j_post
2623    o fix nchklev in tamc.h for global_ocean...
2624    o Bringing flow and store directives up-to-date
2625    o Really weird thing!
2626      call do_the_model_io from the_main_loop with parameters
2627      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2628      TAF places a faulty re-call of initialise_varia
2629      after cost_final call which should not be there!
2630    checkpoint52j_pre
2631    
2632    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2633      error messages
2634    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2635    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2636      debug output
2637    o modfied mdsio_writefield.F to handle non-global files under exch2
2638    o update AIM Cubed-Sphere exp (aim.5l_cs):
2639      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2640    o update AIM Equatorial Channel exp:
2641      use standard aim_v23 pkg and change the SST fields to be more realistic.
2642    o globalFile now works with exch2
2643    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2644      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2645    o limit timeave output for hi-res integrations
2646    
2647    checkpoint52i_post
2648    o removed CPP_EEOPTIONS.h from verification/*/code
2649    o updated the tiling for global_ocean_pressure
2650    checkpoint52i_pre
2651    
2652    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2653      the old pkg/aim).
2654    
2655    checkpoint52h_pre
2656    o shortened offending lines in exch2_send_rx?.template
2657    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2658    o genmake2: add build & execute test for NetCDF code
2659    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2660      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2661    o added useSingleCPUIO flag to monitor.F and mon_out.F
2662    o added temporary hack for sea-ice dynamics on the cube:
2663      metric terms are ignored and it is assumed that
2664      there is no sea-ice on cube faces 1, 2, 4, and 5.
2665    
2666    checkpoint52f_post
2667    o added exch2 cube routines to pkg/exch2
2668    o modified hs94.cs-32x32x5 to use it
2669    o added new grid files to hs94.cs-32x32x5
2670    checkpoint52f_pre
2671    
2672    checkpoint52e_post
2673    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2674      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2675    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2676      to work with implicit vertical advection and AB ;
2677    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2678    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2679     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2680    checkpoint52e_pre
2681    
2682    o fix bug in impldiff when Nr=1 or Nr=2.
2683    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2684    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2685    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2686      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2687    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2688    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2689    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2690    
2691    checkpoint52d_post
2692    o re-tiled many expts to allow comparison in multi-processor mode
2693      - updated output accordingly
2694      - changed hs94.128x64x5 to use intial T from file rather than use the
2695        random number generator
2696    o add infrastructure in model routines for fizhi and gridalt packages
2697    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2698    o changes to permit hi-res, cubed-sphere, configuration
2699      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2700      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2701      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2702        of surface winds for the cube
2703      (A verification experiment, based on global_ocean.cs32x15, but with
2704       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2705       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2706       complete with example surface forcing files and matlab scripts to look
2707       at the output and compare it with that of global_ocean.cs32x15.)
2708    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2709       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2710       to conform to the common rule.
2711    o check-in the first version of the coupler + interfaces for multi-components
2712       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2713       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2714       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2715       - ocean and atmos. share the same horizontal grid (no interpolation).
2716       - exchanges between component and coupler is done in forward_step
2717    o new verification experiment, cpl_aim+ocn:
2718       coupled ocean - AIM atmosphere on cs32 grid.
2719    
2720    checkpoint52d_pre
2721    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2722    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2723    
2724    checkpoint52c_post
2725    o Fixing OPTIONS files for use of exf:
2726      - ALLOW_ECCO not needed
2727      - ECCO_CPPOPTIONS.h should not be included from
2728        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2729        as has been the case in the past
2730      - All cal/exf related options are currently set in
2731        single header file. Should remain so until we
2732        agree on a consistent new policy.
2733    o Removed all CPP options for cal package.
2734      cal has no more CPP options.
2735    o modified STOREs in GAD_ADVECTION
2736    o corrected key comp. for passkey
2737    
2738    checkpoint52b_post
2739    o new version: "thsice" of thermodynamic sea-ice pkg:
2740     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2741     - modify fluxes but do not change theta directly;
2742     - light cleaning of bulk_force pkg (still needed with thsice).
2743     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2744       + output_thsice.txt to test thsice & bulk_force pkgs.
2745    o put back grid & coriolis monitor output.
2746    checkpoint52b_pre
2747    
2748    o call "do_the_model_io" at the beginning (=> dump initial state)
2749    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2750    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2751      (need info on NUMBER_OF_PTRACERS)
2752    o missing PTRACERS headers in some routines
2753    o default tamc.h in pkg/autodiff supposed to crash
2754      to ensure proper customization
2755    
2756    checkpoint52a_post
2757    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2758      - moved surfaceTendencyTice from pkg/seaice to main code
2759      - subroutine FREEZE_SURFACE now limits only surface temperature
2760        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2761        => new output.txt for global_ocean.cs32x15 & global_with_exf
2762      - keep the old version of FREEZE for backward compatibility;
2763        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2764      - corresponding modifs for TAF directives
2765    o added surface flux output variables to TIMEAVE_STATVARS
2766    o time-averaged output for pkg/ptracers
2767    o fix problem with ECCO-related divided adjoint
2768      snapshot file was missing some ad-variables,
2769      but no warning issued by TAF
2770    
2771    checkpoint52a_pre
2772    o some bug fixes for #undef REAL4_IS_SLOW
2773    
2774    checkpoint52 = ecco_c52_e35
2775    o after testing adjoints of checkpoint51u_post
2776    
2777    checkpoint51u_post
2778    o this is the post-merge tag of the ecco-branch
2779      (needs another clean checkout and re-testing)
2780    o various natl_box_adjoint configs and results
2781      but no input fields
2782    o obcs adjoint not yet merged!
2783    o adding ECCO global 1x1 and 2x2 degree configs
2784    o updated/extended some store directives for seaice
2785    o pkg/ecco now containes ecco-specific part of cost function
2786    o top level routines the_main_loop, forward_step
2787      supersede those in model/src/
2788      previous input data.cost now in data.ecco
2789      (new namelist ecco_cost_nml)
2790    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2791    
2792    checkpoint51t_post
2793    o this is the pre-merge tag of the ecco-branch
2794    
2795    checkpoint51s_post
2796    o cleanup: removed various obsolete #define-s
2797    o pkg/grdchk
2798      - renamed 'ph-grd 3' to 'grad-res'
2799      - merged from ecco-branch
2800        (remaining bug fixes for obcs gradient checks)
2801      - additional high-precision output for testreport
2802        (grep for 'precision_grdchk_result')
2803    
2804    checkpoint51r_post
2805    o cleaned up or removed CPP_OPTIONS.h files
2806    o updated results for some of the tests to reflect the new
2807      optfiles (-ieee: -O0 instead of -O3)
2808    
2809    checkpoint51q_post
2810    o cd_code:
2811      - moved cd_scheme.F -> cd_code_scheme.F
2812      - separate read_checkpoint from cd_code_ini_vars.F
2813      - separated cd_code part from write_checkpoint
2814      - updated AD_SOURCE, generated .flow
2815      - added CD_CODE_VARS.h to the_main_loop
2816      - Moving cd_code specific store dir.s to pkg/cd_code
2817    o ctrl package totally restructured
2818      - pack/unpack now optional and decoupled from
2819        xx_/adxx_ I/O
2820      - ctrl_pack/unpack cleaned
2821        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2822      - confined inclusion of AD_CONFIG.h to where necessary.
2823    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2824    
2825    checkpoint51p_post
2826    o create initial cd_code package
2827      - WARNING: the initialization of fields within packages
2828        is broken because INI_FIELDS (where READ_CHECKPOINT is
2829        called) is called *before* PACKAGES_INIT_VARIABLES.
2830        This seems to be backwards since
2831        1) its important to initially zero the entire field including
2832           the "halo" region
2833        2) zeroing needs to be done *before* reading pickup info
2834           and the pickup call might or might not happen in any
2835           particular run
2836      - this needs an overhaul for R2
2837    o cleanup verification/*/code/GMREDI_OPTIONS.h
2838    o cleanup testreport
2839    
2840    checkpoint51o_post
2841    o bringing AD-related verif's up to date with genmake2
2842      - carbon/
2843      - global_ocean.90x40x15/
2844      - hs.94.1x64x5/
2845      - (front_relax/ )
2846    o (more) consistent directory structure for AD-related verif.'s
2847    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2848    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2849    o bug fix in find_alpha.F for MDJWF:
2850      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2851        change rho -> rho-rhoConst
2852      - replace call find_rho to find_rhonum
2853    o initialisation of rFlx extended to full array (required by TAF)
2854      and shifted to thermodynamics
2855    o removed PTRACERS.h in ptracers routine
2856    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2857    o Correcting initialisations for fVerU, fVerV.
2858    o helping TAF to recognize dependency on kUp for
2859      fVerU, fVerV
2860    o Replacing delZ by delR in pkg/ctrl/
2861    checkpoint51o_pre
2862    
2863    o undid all of cp51 pending some cleanups and discussion
2864    o added the [#include "AD_CONFIG.h"] statement to all files that need
2865       it for adjoint/tl #defines
2866     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2867     o removed tools/genmake since it no longer works
2868    
2869    checkpoint51n_post
2870    o modifications to make FREEZE flux visible to pkg/kpp
2871      - moved surfaceTendencyTice from pkg/seaice to main code
2872      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2873      - subroutine FREEZE now limits only surface temperature
2874        (this means new output.txt for global_ocean.90x40x15,
2875         global_ocean.cs32x15, and global_with_exf)
2876    o added surface flux output variables to TIMEAVE_STATVARS
2877    
2878    checkpoint51n_pre
2879    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2880    o added [#include "AD_CONFIG.h"] to all files that use the following
2881      defines:
2882      - ALLOW_ADJOINT_RUN
2883      - ALLOW_TANGENTLINEAR_RUN
2884      - ALLOW_ECCO_OPTIMIZATION
2885    
2886    checkpoint51m_post
2887    o incorporating changes to get TAMC/TAF working in genmake2
2888      - added new TAMC/TAF targets to the Makefile
2889      - various cleanups related to package handling
2890      - these changes should have no impact on the forward model
2891    
2892    checkpoint51l_post
2893    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2894     - faster algorithm for cal_addtime.F
2895     - higher precision arithmetic, where needed
2896     - pkg/exf *startdate variables changed from calendar date to
2897       model integration time
2898    
2899    checkpoint51l_pre
2900    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2901    o enable to apply restoring on S & T only in a latitude band.
2902    o update output (external_forcing_surf modif. change truncation errors)
2903       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2904    
2905    checkpoint51k_post
2906    o change default to: useNHMTerms=.FALSE.
2907     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2908       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2909     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2910        exp1, ideal_2D_oce
2911     - change data file of oceanic exp (leave the results unchanged for now)
2912       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2913    o set gravitySign automatically according to the vertical coordinate used
2914      (and change sign: back to "logical" value: +1 when R increases downward)
2915    o added an include barrier to the default CPP_OPTIONS.h and
2916      removed the #include "PACKAGES_CONFIG.h" from it
2917    o fix a bug in mom_fluxform (from chk51j_post)
2918    
2919    checkpoint51j_post
2920    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2921    o adjusted some flow directives (dynamics, thermodynamics)
2922    o added cubed-sphere case to test cost function
2923    o heckpoint_lev?_directives.h now include
2924      pkg-specific directives, whenever those are enabled.
2925    o Moving pkg-specific flow directives to corresponding pkg
2926      Moving pkg-specific differentiation list to corresponding pkg
2927      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2928      ---> conventions are
2929           - pkg_ad.flow
2930           - pkg_ad_diff.list
2931           - pkg_ad_check_lev?_dir.h
2932    
2933    checkpoint51i_post
2934    o merge of the branch-genmake2
2935      - knowingly breaks the older genmake
2936      - automatic generation of all ALLOW_${PKG_NAME} defines
2937      - new testreport supersedes older testscript
2938    o large number of package inclusion and header cleanups
2939    checkpoint51i_pre
2940    
2941    o new output for adjoin of global ocean vector invariant
2942    o fix for checkpoint of thermodynamic seaice and bulk_force
2943    o Steph gchem various cleanups
2944    
2945    checkpoint 51h_pre
2946    o fixed some single quotes
2947    o modify gchem pkg to be more versatile
2948    o modifications to clean up dic pkg
2949    o add pkg/cfc
2950    
2951    checkpoint51g_post
2952    o provide links for ARPACK and ADM*TLM
2953    o start removing verification/vero/
2954    o update AD-related stuff
2955      (in particular some IF-statements in model/src/ routines)
2956    o adding to verification/global_ocean.90x40x15/ adjoint of
2957      vector invariant setup
2958    
2959    checkpoint51f_post
2960    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2961    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2962      of tracer Green's fucntions for ocean inversion project.
2963    
2964    checkpoint51f_pre
2965    o Added on-the-fly spatial interpolation capability
2966        "USE_EXF_INTERPOLATION" to pkg/exf.
2967      - This is a temporary Cartesian-grid hack until
2968        the super-duper ESMF coupler becomes available.
2969      - See verification/global_with_exf/README for usage example.
2970      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2971        flags and modified pkg/seaice accordingly.
2972    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2973        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2974        non-local transport term.
2975    
2976    checkpoint51e_post
2977    o pkg/mom_vecinv:
2978      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2979      - add time-ave diagnostic of vorticity advection.
2980    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2981    o atmospheric geopotential: - include water vapor effect;
2982                                - use p^kappa in p* scaling.
2983    o land pkg: read initial state from files.
2984    o AIM : add stratospheric drag in the upper level
2985    
2986    checkpoint51d_post
2987    o change function ILNBLNK (=> last non-blank char.) to return zero
2988      (instead of the string length) when the string. char is empty
2989    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2990    o modif's to restore TAMC compatibility
2991      - avoid "_d" constructs in PARAMETER declarations
2992      - avoid interrupting lines by comment lines
2993    o Use cluster local disks for purely local I/O
2994      vs. globally visible disks needed for ctrl stuff
2995      (merged from ecco-branch)
2996      - new active_file_loc... and mdsio_..._loc routines
2997      - affected packages: autodiff, ctrl, grdchk, mdsio
2998    
2999    checkpoint51c_post
3000    o introducing integer flag debugLevel
3001      - debLevZero: suppress all output
3002      - debLevA: standard
3003      - debLevB: equivalent to current debugMode=.TRUE.
3004    o introducing pathname variable mdsioLocalDir for mdsio
3005      that can be specified at runtime
3006      (relevant for cluster I/O to local disk)
3007    `
3008    >>>checkpoint51b_post
3009    adjoint of ptracers
3010    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3011    o extended state in checkpoint_lev?, etc.
3012    o alternative ctrl/cost with tr1 or ptracer
3013    o new comlev1_bibj_ptracers
3014    o new ptracers.flow
3015    o made ptracers_forcing same as external_forcing_s
3016    o added verification for adjoint with ptracers
3017      - adm. grdchk fail so far
3018      - tlm. grdchk OK
3019      - checked tapelev/comlev recomputations: OK
3020    <<<checkpoint51b_pre
3021    
3022    checkpoint51a_post
3023    o added code for biogeochemistry package
3024      - new pkgs: dic, gchem
3025      - new subroutine in ptracers
3026    o modify code for biogeo packages
3027      - in model/src and pkg/ptracers
3028    
3029    checkpoint51
3030    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3031      - autodiff, ctrl, exf, grdchk, seaice
3032      kept separate packages
3033      - cost, ecco, obcs
3034    o updating verification/internal_wave, verification/lab_sea
3035      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3036    
3037    checkpoint50i_post
3038    o Preparing next differentiable checkpoint and sync
3039      of MAIN vs. ecco-branch
3040      - 1st step: this one is differentiable
3041      - 2nd step: next(! not this) checkpoint will have updated packages
3042                  from ecco-branch)
3043    
3044    checkpoint50h_post
3045    o new package "land": provide surface BC for AIM.
3046    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3047    o AIM: use true log-P extrapolation for near surface temp (= as in
3048        F.Molteni paper) ; update aim.5l_cs output.
3049    o New variable in PARM03 for more flexible pickups
3050    o somewhat cleaned package initialisation sequence for
3051      ctrl/ cost/ ecco/ in packages_... routines
3052    
3053    checkpoint50g_post
3054    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3055      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3056      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3057        made the default because of faster convergence than ADI
3058    
3059    checkpoint50f_post
3060    o exf totally restructured
3061      - replaced all exf_set_ routines by one generic exf_set_gen.F
3062        and made sure it's still differentiable
3063      - split exf_getffields.F into new exf_bulkformulae.F
3064      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3065      - updated adjoint/makefile and relevant verif. accordingly
3066    
3067    checkpoint50f_pre
3068     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3069          + change Evap over land. (update aim.5l_cs output)
3070     o added missing .cvsignores and made uniform across expts
3071     o changed configuration of tidal_basin_2d expt
3072     o added pkg/debug functions for tracing code in fatal crashes
3073     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3074     o new fn in pkg/monitor to stop model if solution grows too big
3075     o removed lots of single quotes from comments
3076    
3077    checkpoint50e_post
3078    o make KPP work with PTRACERS
3079     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3080       nearly a copy of kpp_transport_s
3081     - there is no analogue to SurfaceTendencyS, so I have to use
3082       gPtr(of the surface layer) instead
3083    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3084    checkpoint50e_pre
3085    
3086    checkpoint50d_post
3087    o change kpp output from multiple-record state files to single-record state
3088      files analogous to write_state.F
3089    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3090      analogous to the cg2d-related output.
3091    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3092      so that writing to internal file fn (with length 512) fails.
3093    checkpoint50d_pre
3094    
3095    checkpoint50c_post
3096    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3097    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3098    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3099    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3100    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3101    
3102    checkpoint50c_pre
3103    Merging from release1_p13:
3104    o bug fix for pkg/seaice dynamic solver
3105    o Added SEAICE_initialHEFF to pkg/seaice
3106    
3107    checkpoint50b_post
3108    o store u*,v* in gU,V instead of in guNm1,gvNm1
3109    o in order to put the momForcing out of the Adams-Bashforth:
3110      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3111      to timestep.F
3112    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3113    o re-generate output for highly sensitive test-exp:
3114       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3115    
3116    checkpoint50b_pre
3117    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3118    o corrected CPP option mismatch in exf_Bulk... functions for case
3119      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3120    
3121    checkpoint50a_post
3122    o Bug fix for merging between c50 and KPP.
3123      ikey was passed from thermodynamics to kpp_calc via
3124      common block rather than being recomputed in kpp_calc,
3125      in contradiction with new key itdkey.
3126      New key ikppkey created, and tamc.h headers updated.
3127    
3128    checkpoint50
3129    - 2nd step of merge with ecco-branch:
3130      merge changes in ecco-branch back into main trunk
3131    - bug fix in find_alpha
3132    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3133    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3134    - merged some sliced AD support routines
3135    
3136    checkpoint49
3137    merged from ecco-branch:
3138    o exf:
3139      - Enable initialisation of forcing fields to constant
3140        (runtime) values.
3141      - in exf_getffields.F
3142        Reduce i-/j-loop to interior domain, discarding overlaps.
3143        That also fixes wrong TAF-key computations for key_1, key_2
3144        with bulf formulae.
3145      - exf_init.F modify #ifdef for exf_init_evap
3146      - exf_getffieldrec.F, ctrl_getrec.F
3147        The following INT-usages are not safe:
3148          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3149          fldcount = int(fldsecs/fldperiod) + 1
3150        and were modified.
3151    o autodiff: checkpoint_lev...
3152      - updated storing for bulk formulae (some arrays were missing)
3153      - added state for seaice package
3154      - synchronized with main branch
3155    o DIVA:
3156      Modif.s in
3157      - the_main_loop.F
3158      - the_model_main.F
3159      and added cost_final_restore.F cost_final_store.F
3160      o With these changes, it is possible to fully separate
3161        the first forward run to compute the cost function (mdthe_main_loop)
3162        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3163        into separate model executions.
3164        This enables better tuning of DIVA to given queue sizes.
3165      o Loss of cost function value in consecutive DIVA runs is
3166        fixed by storing to 'costfinal' file.
3167      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3168        beginning/end of adjoint integration is accounted for.
3169      The current changes apply to TAF-1.4.26.
3170      TAF has one remaining bug, requiring one manual change
3171      (see MITgcm manual).
3172    o cal: synchronized between MAIN and ecco-branch
3173    
3174    checkpoint48i_post
3175    o Changes to restore differentiability of code w.r.t. previous tag
3176      (mostly adding new routines to make list and replacing
3177      pressure by totPhiHyd).
3178    o Updated and merged grdchk package
3179      - has both ADM and TLM checks
3180      - works for single- and multi-proc.
3181      - output cleaned
3182      - worked successfully for parallel DIVA
3183    o genmake:
3184      - Adding -platform=SP4
3185      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3186    o Modif. for DIVA:
3187      ctrl_unpack should not be called in intermediate DIVA interval.
3188      (similar thing would apply for active files such as
3189      tbar, sbar, psbar, which should not be reinitialised;
3190      only relevant for ecco-branch)
3191    
3192    checkpoint48h_post
3193  o improve "ini_p_ground" when using finite difference form for calc_phi_hyd  o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3194  o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F  o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3195  o Added SEAICE_initialHEFF to pkg/seaice  o Added SEAICE_initialHEFF to pkg/seaice
3196    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3197    
3198  checkpoint48g_post  checkpoint48g_post
3199  --- EOS:  --- EOS:

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