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[Datastream #BWY-785845]: Question about National Mosaic Radar Data

Hi Munsung,

re:
> My name is Munsung Keem and I am a ph.D student of the University of Iowa.
> 
> Thanks to your efforts, now I am trying to use your NEXRAD LEVEL III
> National Mosaic data on your THREDDS server for my research.
> 
> As I know, the mosaic data (grib2) are offered with 5-min intervals,

That is correct.

re:
> but while looking at the data, I realized that some files may be missing
> or may not be generated (i.e. from 07:35 to 11:05 on 24th May, 2016)

The files were generated and distributed in the Unidata Internet Data
Distribution (IDD) system.  Due to disk problems, they were not saved
on thredds.ucar.edu.  They are, however, available via a THREDDS
development server, thredds-dev.unidata.ucar.edu.

NB: The NEXRAD Level III composite stores on all of the machines that we
maintain are limited in the number of days that are kept.  If you need
the GRIB2 composite data from the period you noted above, you should
make sure to grab them _soon_.

re
> So, I would like to clarify whether the absence of data files is due to
> the fact that there was no rainfall or it means a kind of missing data.

The files are missing on thredds.ucar.edu because the machine had disk-related
problems during that time (and other) time period.

re:
> Could you please inform me of the reason of the absence of data files?

Please see above.

re:
> It will be helpful for my research.

Again, the NEXRAD Level III composites are available on the 
thredds-dev.unidata.ucar.edu
server, but they will not be there for long, so you should grab the files as 
soon
as possible before they get scoured.

re:
> I always appreciate your helps.
> Thank you.

No worries.

Cheers,

Tom
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Ticket Details
===================
Ticket ID: BWY-785845
Department: Support Datastream
Priority: Normal
Status: Closed
===================
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