[Datastream #RPP-204292]: Question about NEXRAD national composite data

Hi Munsung,

re:
> Good afternoon.
> 
> I am a student of the University of Iowa, and I am writing this email
> to ask you about the NEXRAD national composite data.
> 
> As I know, Unidata provides the NEXRAD national composite data through
> THREDDS server.  However, it only provides past 21-day data.

That is correct for the principle THREDDS server that we operate, 
thredds.ucar.edu.
Another server has a longer rolling archive of most of the datasets available
on thredds.ucar.edu.  Neither of these archives, however, are comprehensive.

re:
> Now, I would like to use the whole data (1995 ~ present), as a first step,
> for Iowa state for my research.

A couple of comments:

- we started creating NEXRAD Level III national composites some time after 1995

  I can't remember exactly when we started creating the composites.

- we have not archived the NEXRAD Level III national composites here in
  UCAR

  It is possible that one or more Unidata sites have such an archive, but
  I don't know who they might be.  I would have suggested contacting Daryl
  Herzmann of UIowa, but I assume that you have already done that given
  that you are at the same institution.  Just in case you have not yet
  contacted Daryl, here is his email address:

  daryl herzmann <address@hidden>

re:
> So, I am wondering if you can provide historical data as well.

We have no historical data.

re:
> Could you help me for this problem?  Your help will be really valuable
> for me.

If Daryl does not have an archive of the products you are interested in,
you should send an email to the address@hidden email list
that we maintain.  It is possible (but not highly likely) that some
other site has been archiving the NEXRAD Level III composites that
we generate for real-time redistribution in our Internet Data Distribution
(IDD) network.

re:
> I will wait for your reply.

We're sorry we couldn't be of more help!

re:
> Thank you.

No worries.

Cheers,

Tom
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Ticket Details
===================
Ticket ID: RPP-204292
Department: Support Datastream
Priority: Normal
Status: Closed