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Re: [Datastream #TVM-187420]: USPLN feed test and decoder info



Hey Chris,

I'm sure Tom will respond, but I just had to say that your ears must have been burning, because you were the subject of a couple of discussions today. It's so good that you got back to us, and the news sounds pretty positive!

We'll be eager to hear more during the UserComm meeting!

Linda

Chris Herbster wrote:
Hi Tom et al.,

It looks like I did get the email, but now that the junk filters are relaxed more junk is coming in too! )-:

Here's where we stand.

The USPLN was developed by a company named TOA working with WDT (in OK). They appear to have had a marital spat and have worked towards a divorce agreement. I have been told that instead of working with WDT people that I will now work with TOA folks. Meanwhile WSI is about to become a "partner" with TOA in the USPLN. I am hoping to have the agreement in place to begin the feed on June 1st. We think that is possible.

The responses to the data questions below were less than what I had hoped for, but it seemed to come from someone who told someone something rather than right from a person of knowledge. (The reply came from someone in WDT who didn't seem to really understand the questions.) The issue of the data coming in the "wrong" data block (old data in this minute's block) was attributed to having latency in the transmission of the data from the sensors. I'd like to look at the statistics about this to see if the data are always from the end of the previous minute or not ....

As for the data processing of CONUS vs. non-CONUS data, I did not get a satisfactory response. I'm hoping to have a conversation with one of the engineers at TOA next week about this issue.

We have developed a web registration form for the data subscription process. The backside of the form is being written now (to actually but the data into a file/database), and I expect to have all of this ready to show for our meeting. (Perhaps have the Usercomm folks all subscribe as a test of our system.)

Sorry again for not getting back to these questions sooner. I'll be done with classes and finals by next Wednesday and I'll have much more time to focus on these items at that point.

Looking forward to seeing everyone in a couple of weeks!

CH

PS  Nice plot!


On 04/23/07 18:13, Unidata Datastream Support wrote:
Hi again Chris,

I am concerned that you are not receiving emails from Unidata...

Late last week I sent you a note regarding adding IDD distribution of
USPLN lightning data as an agenda item for the upcoming Unidata User's
Committee meeting.

If you recall, there were some outstanding issues that need to be acted on:

- removing Unidata references from the USPLN licensing agreement

- the processing of flash events over the CONUS (20N-50N, and west of 65W) is
  apparently different than outside of this area

- the flash events received in the LDM feed are not monotonically increasing
  in time

I am wondering if you have had time to check into these items, and if yes, what
the results are.

As a teaser, I have included a plot of all USPLN flashes received in the IDD
EXP feed from ERAU to Unidata for Sunday, April 22 color coded by hour UTC.


Cheers,

Tom
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Ticket Details
===================
Ticket ID: TVM-187420
Department: Support Datastream
Priority: Normal
Status: Closed

------------------------------------------------------------------------


--

 Dr. Christopher G. Herbster
 Associate Professor
 Director of Science and Technology
 for the ERAU Weather Center
 Applied Aviation Sciences
 Embry-Riddle Aeronautical Univ.
 600 S. Clyde Morris Blvd.
 Daytona Beach, FL 32114-3900
386.226.6444 Office
 386.226.6446 Weather Center
 http://wx.erau.edu/


--
Linda Miller - address@hidden
Community Services, Unidata
University Corporation for Atmospheric Research
P.O. Box 3000
Boulder, CO 80307-3000
303-497-8646 fax: 303-497-8690