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[IDV #ZRG-103304]: Converting between knots and m/s with flow vectors

> Hello Julien,
> Attached are two small sample files.
> 
> Ilan Levy
> 

Hi Ilan,
    I don't know which version of the IDV you are running, I am running the 
IDV2.9 on your data, the result looks correct to me, the highest wind is about 
50 knot in my display, and compared to the u and v data, it is right. see the 
attached image.


Yuan
> -----Original Message-----
> From: Sills,David [Ontario]
> Sent: August 13, 2010 4:50 PM
> To: Levy,Ilan [Ontario]
> Subject: FW: [IDV #ZRG-103304]: Converting between knots and m/s with flow 
> vectors
> 
> Hi Ilan,
> 
> The data files are far too large to send to him. Would it be possible to 
> generate a file that had just one time and one level?
> 
> I'm on vacation starting tomorrow, so if you could send along to him I'd 
> appreciate it.
> 
> Thanks,
> 
> Dave
> ______________________________________
> David Sills, Ph.D.
> Severe Weather Scientist | Scientifique du temps rigoureux Cloud Physics and 
> Severe Weather Research Section | Section de la recherché sur la physique des 
> nuages et du temps violent National Laboratory for Nowcasting and Remote 
> Sensing Meteorology | Laboratoire national de prévision immédiate et de 
> météorologie par télédétection Environment Canada | Environnement Canada
> 4905 Dufferin Street | 4905, rue Dufferin Toronto (Ontario) M3H 5T4 
> address@hidden
> 905-833-3905 x235 Telephone | Téléphone
> 905-833-0398 Facsimile | Télécopieur
> Government of Canada | Gouvernement du Canada Website | Site web
> 
> -----Original Message-----
> From: Unidata IDV Support [mailto:address@hidden]
> Sent: Friday, August 13, 2010 4:47 PM
> To: Sills,David [Ontario]
> Cc: address@hidden
> Subject: [IDV #ZRG-103304]: Converting between knots and m/s with flow vectors
> 
> Hi, David
> 
> Would it be possible to send (attach) one of the data files in question?
> 
> Thanks,
> 
> -Julien
> 
> > Hello,
> >
> > I have data files with wind in knots. When I plot them as wind barbs,
> > it appears as though IDV treats the data as m/s, and then does a
> > conversion to knots. This results in the winds being much higher in
> > the plot than they should be.
> >
> > What is the best way to get around this problem?
> >
> > Many thanks,
> >
> > Dave
> > ______________________________________
> > David Sills, Ph.D.
> > Severe Weather Scientist | Scientifique du temps rigoureux Cloud
> > Physics and Severe Weather Research Section | Section de la recherché
> > sur la physique des nuages et du temps violent National Laboratory for
> > Nowcasting and Remote Sensing Meteorology | Laboratoire national de
> > prévision immédiate et de météorologie par télédétection Environment
> > Canada | Environnement Canada
> > 4905 Dufferin Street | 4905, rue Dufferin Toronto (Ontario) M3H 5T4
> > address@hidden
> > 905-833-3905 x235 Telephone | Téléphone
> > 905-833-0398 Facsimile | Télécopieur
> > Government of Canada | Gouvernement du Canada Website
> > <http://www.ec.gc.ca/scitech/default.asp?lang=En&n=F97AE834-1&xsl=scit
> > echprofile,form&formid=A9E422E3-F382-4017-A64E-E58E6BC14CC9>  | Site
> > web
> > <http://www.ec.gc.ca/scitech/default.asp?lang=Fr&n=F97AE834-1&xsl=scit
> > echprofile,form&formid=A9E422E3-F382-4017-A64E-E58E6BC14CC9>
> 
> 
> Ticket Details
> ===================
> Ticket ID: ZRG-103304
> Department: Support IDV
> Priority: Normal
> Status: Open
> 
> 
> 


Ticket Details
===================
Ticket ID: ZRG-103304
Department: Support IDV
Priority: Normal
Status: Closed

Attachment: windbarb.gif
Description: GIF image