Re: 20040901: problems with NEXRAD files

Hi John,

The 1km National mosaic "seems" to be a desirable product, especially for
the hydrological folks...

I suspect you have a correct request line in your ldmd.conf to get the
data..if not it would look something like:

request NNEXRAD ".*" [hostname]..are you feeding from aeolus.ucsd.edu?

if so then:

request NNEXRAD ".*"  aeolus.ucsd.edu

Now to get the data onto your system and out of your queue (buffer)..

In ~ldm/etc you will edit your pqact.conf file to include the following:

# png compressed NEXRAD Level III radar products in PNG compressed GINI format
FNEXRAD ^rad/NEXRCOMP/(...)/(...)_(........)_(....)
        FILE    -close data/pub/raw/gini/RADAR/\1/\2/\2_\3_\4

or whatever path to you choose up to: \1/



Please keep in mind that no "spaces" are allowed in pqact.conf only
"tabs"..

Obviously, you can choose a unique path that you may prefer rather than:

data/pub/raw/gini/RADAR/

(That's just where we like it for access to our applications)


....but keep the:

\1/\2/\2_\3_\4

for proper file naming and storage...


As the commented out section indicates, this data is in GINI format:

Please see:

http://weather.unisys.com/wxp/Appendices/Formats/GINI.html

Let me know how this goes...

We may want to load the netCDF libraries and write a script that can
generate these into geo-tiffs on the fly..just a thought.

Cheers,

Jeff
---------------------------------------------------------------------
Jeff Weber                                    address@hidden        :
Unidata Program Center                        PH:303-497-8676        :
University Corp for Atmospheric Research      3300 Mitchell Ln       :
http://www.unidata.ucar.edu/staff/jweber      Boulder,Co 80307-3000  :
---------------------------------------------------------------------

On Wed, 1 Sep 2004, John Helly wrote:

> Hi Jeff.
>
> Right now we are experimenting with what we can get from the system.  I
> have gotten different opinions from various people about what data we
> should be retrieving.  Right now, I don't have any preference but
> welcome advice.  My main concern, first, is to figure out how to store
> data from the buffer into the file system.
>
> J.
>
> On Sep 1, 2004, at 12:01 PM, Jeff Weber wrote:
>
> Hi John,
>
> I understand we are having issues ingesting/processing/filing NNEXRAD
> data..
>
> Can you help me by defining what you want to do, and if in fact this is
> level III or level II data..
>
>
> By "what you want to do" I mean:
>
> Simply file
>
> File and decode (GEMPAK I presume)
>
> Relay only
>
>
> I can dial you in once we determine your desires ;)
>
>
> Cheers,
>
>
> Jeff
> ---------------------------------------------------------------------
> Jeff Weber                                    address@hidden        :
> Unidata Program Center                        PH:303-497-8676        :
> University Corp for Atmospheric Research      3300 Mitchell Ln       :
> http://www.unidata.ucar.edu/staff/jweber      Boulder,Co 80307-3000  :
> ---------------------------------------------------------------------
>
> On Tue, 31 Aug 2004, Ben Domenico wrote:
>
> > Hi Jeff,
> >
> > I'm attaching two notes from John Helly about problems getting NEXRAD
> > files
> > out of the LDM stream.  Please follow up on this?  This is part of
> > John's
> > is work on real-time portions of the data systems for CUAHSI.
> >
> > -- Ben
>
>
> Cheers.
> --------------
> John Helly, University of California, San Diego
> San Diego Supercomputer Center 9500 Gilman Dr. Mail Code 0527, La Jolla
> CA 92093-0505
> Phone: Voice +01 760 840 8660 mobile / 760 943 0382 / 858 534 5060
> http://www.sdsc.edu/~hellyj
>