[aprssig] Wind speed/direction
n0nhj at yahoo.com
Wed Jul 28 19:20:37 EDT 2004
GUST---A sudden significant increase in or rapid fluctuations of wind
speed. Peak wind must reach at least 16 knots (18 miles per hour) and
the variation between peaks and lulls is at least 10 knots (11.5 miles
per hour). The duration is usually less twenty seconds.
Most of the references I could find said 3 seconds was the WMO
recommendation, but 5 seconds was used in North America.
Take a look at these....
Scott Miller wrote:
>>Yes, that is what I would do. I cannot guarantee what
>>client software will do with it, but I would consider that
>>to be IAW the spec...
>I thought I heard that the Kenwoods choke on that...
>Anyway, while we're on the subject, I don't think I ever got an answer to my
>question about gust calculation. How should that be done? It's the one
>remaining part I need to finish on my 1-wire weather station support for the
>aprssig mailing list
>aprssig at lists.tapr.org
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