Hello LDM Users,
After January 1, unencrypted NOAAPORT NEXRAD Level 3 data will be
available via the Internet Data Distribution system. In a previous
message we told you about our plan to distribute the NEXRAD data:
http://www.unidata.ucar.edu/packages/ldm/receivingRadar.html
In particular, we have drafted a new routing scheme for the NEXRAD
data that uses only two tiers. It can be seen at
http://www.unidata.ucar.edu/projects/idd/nexradFeed.html
Please look there to see which first tier site you should use as your
NEXRAD feed.
Also, we have prepared a page to help you get the NEXRAD data. See
http://www.unidata.ucar.edu/packages/ldm/feedtypes/howto-nnexrad.html
for detailed information about getting and using the data.
Please proceed slowly in requesting NEXRAD data, because if you
request all of the data as soon as it is available, there is a real
possibility of overloading your own site as well as delaying data to
other IDD sites, since the NEXRAD data is a significant increase in
the number of products and volume of data already carried on the IDD.
We recommend that sites start by requesting the NEXRAD floater feed
and at most three other sites until we have a chance to evaluate and
adjust the routing to balance the load among participating IDD sites.
The encrypted, uncompressed data is currently available on the NEXRAD
feed and is already flowing to several first tier sites. You can add
your request line now to start receiving the data when it becomes
available at your upstream feed.
If you have any questions, please first read the information
available. Many questions are answered there. If you can't find the
answer to your question in the material we have provided, send email
to support@xxxxxxxxxxxxxxxx.
We also want to express our appreciation to top-level source sites and
first-tier sites for agreeing to participate in the NEXRAD data
distribution, giving up some of their network bandwidth, computing
resources, and time during the holiday season to reconfigure their
LDMs to make NEXRAD data available to other IDD sites. In particular,
we want to thank:
Harry Edmon
Eric Horst
Eirh-Yu Hsie
Mark Laufersweiler
Bob Leche
Jeff Masters
Bill Noon
Art Persons
Pete Pokrandt
Larry Riddle
Jerry Robaidek
Clint Rowe
Gilbert Sebenste
Paul Sirvatka
Bryan White
David Wojtowicz
for their help.
Wishing you all a wonderful new year with lots of good quality data!
--Anne
--Russ
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Anne Wilson UCAR Unidata Program
anne@xxxxxxxxxxxxxxxx P.O. Box 3000
Boulder, CO 80307
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Unidata WWW server http://www.unidata.ucar.edu/
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