[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Datastream #DKY-639434]: Level III NexRad Archive (Intermittent)

Hi Gary,

re:
> Over the last couple of days we’ve been trying to access the
> radar images in the short term archive located at
> 
> http://motherlode.ucar.edu/cgi-bin/ldm/genweb?native/radar/level3 to
> 
> identify rotation couplets in correlation to recent storm damage resulting
> from tornadoes.  This is within the LMK and PAH WFO CWA's.    Our analysis
> includes close scrutiny of Bref, SRM, and CC products.  Invariably we
> get into the investigation about 30 minutes and after downloading and
> reviewing 20 to 30 images your server stops responding to our requests.
> Come back several hours later, restart our work, same thing happens.

What are you using to transfer the images to your site?  It may be
that your site gets blacklisted from trying to transfer too many
files in too short of a period.

re:
> Interestingly, trying another IP address shows the motherlode server is
> still functional (but apparently not for our original IP address).

This strongly suggests that some automatic controls are kicking in to
limit your transfers.  I could be more definite if I better understood
how you are doing the transfers/requests.

re:
> The archive would be extremely useful to us for storm analysis........our
> analysis software, which we're been developing in conjunction with
> our WFO (who is trying out the software as well) looks for tell-tale
> rotational couplets along with tornado debris signatures.  We've been
> using the RPCCDS FTP gateway but it only retains the last 250 or so
> scans.....another reason the archive would be VERY beneficial.

Have you considered setting up an LDM feed for the data and then
managing your own local archive?

re:
> It would really be greatly appreciated and really helpful if the archive
> would support our effort.  Is there a way to make that happen?

We need more detailed information before we can answer this.

re:
> Your assistance is greatly appreciated.

Please send us more detailed information on how you are trying to download
the files you are interested in so we can better comment on the best
way for you to proceed.

Cheers,

Tom
--
****************************************************************************
Unidata User Support                                    UCAR Unidata Program
(303) 497-8642                                                 P.O. Box 3000
address@hidden                                   Boulder, CO 80307
----------------------------------------------------------------------------
Unidata HomePage                       http://www.unidata.ucar.edu
****************************************************************************


Ticket Details
===================
Ticket ID: DKY-639434
Department: Support Datastream
Priority: Normal
Status: Closed