[Dart-users] updated MADIS converters and WRF preprocessor

[Nancy Collins]

dear dart-users,

(apologies to those of you getting this twice.  my first attempt went to
a subset of the dart users, instead of to the mailing list as i'd intended.)

i've just committed a complete revision of the MADIS observation
converters.  there's a corresponding change to the wrf preprocessor
to match the changes there.  Details follow:

The converters no longer have time or a window size as inputs.  They
convert all obs in the input to the output, and they keep the original
obs times.  The rawinsonde converter still needs 2 logicals for whether
to output significant level data or not.

The wrf preprocess program now does need an analysis time as input,
and will superob all observations in the inputs, so the data should be
divided up into obs_seq files that match the intended assimilation windows.

In the converter code itself common routines have been pulled out
into a separate file, and the code has been streamlined.

There are some new scripts showing examples of how a larger
workflow could be constructed to convert a long series of data files.

The quickbuild.csh script now builds the advance_time and obs_sequence_tool
executables, for use with the scripting.

Thanks to Ryan and Glen for new code, and thanks to them and Rahul
for testing.

if you have any questions, please let me know (nancy at ucar.edu).
nancy