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[THREDDS #CPC-118546]: Meso-SAILS (FN Convention)

Gary,

Thanks for the additional information.

It turns out that the LDM headers we use to get the time information for file 
names only contains time out to the minute, so that complicates things a bit. 
We can't just add any seconds (say, from the current time) to it because we 
cannot guarantee the order of arrival of products. I'm currently looking into 
where the LDM headers come from to see if we have any flexibility to fix this 
further upstream from THREDDS.

I'll let you know what I find out when I do...

Ryan

> Hello Ryan:
> 
> See additional info provided by NWS below....
> 
> Gary Fritz
> Dubois County Skywarn
> 
> From: Jessica Schultz - NOAA Federal
> Sent: Monday, February 09, 2015 12:18 PM
> To: Gary Fritz
> Subject: Re: TIN 15-04
> 
> Hello Mr. Fritz,
> 
> It is unlikely, but not impossible, that the update interval could be less 
> than 60 seconds. Vendors should assume this possibility. The private sector 
> companies are notified about technology changes through the TINs.
> 
> Jessica
> 
> On Mon, Feb 9, 2015 at 5:13 AM, Gary Fritz <address@hidden> wrote:
> 
> Hello Jessica:
> 
> While examining the scan spacing associated with the proposed implementation 
> of MESO-SAILS it was noted that there can be as little as 62 seconds spacing 
> between scans.  As such there is growing concern that given system tolerances 
> there might be occasions where consecutive MESO-Sails scans fall within the 
> same minute.  Should this occur it might violate the radar product file 
> naming convention which I understand is employed by AllisonHouse, Gibson 
> Ridge, Weather Graphics, and applications such as Thredds and GemPak and 
> result in collisions, software malfunctions, and/or over-writing of radar 
> product files.
> 
> Please advise whether the National Weather Service can guarantee that with 
> current or forthcoming versions of SAILS that scan spacing will never drop 
> below one minute.  If that is not the case, please then advise whether to 
> your knowledge that the above companies are aware of the potential upcoming 
> impact and are updating their applications to accommodate this new constraint.
> 
> Your assistance is greatly appreciated.
> 
> Thanks,
> Gary Fritz
> Dubois County Skywarn (Indiana)
> 
> 


Ticket Details
===================
Ticket ID: CPC-118546
Department: Support THREDDS
Priority: High
Status: Open