Distant observer wrote:
I don't think there was any wind gauge error per se. Wind
was light to moderate all day, and when you watch the video and interviews
after you see no evidence of strong winds. The wind was gusting shifting a bit
however.
What is possible is that the ideal '200 diagonal tail wind'
prevailed during this event. This would be a diagonal tail wind blowing at
maybe around 3 m/s or so at roughly 45 degrees or a bit less. It would be optimal
because there would be no real headwind at the start, especially for the outer
lanes, and there would a maximum (and kind of illegal) slingshot boost
rounding the bend, and then you would have a helpful tail/cross wind up the
straight - but measured as a vector down the home straight it would
register a legal 1.7 m/s.
And finally we have a post that is the type of post we are looking for.
And I assume this type of diagonal tail wind would only be possible on a smallish track like this. Erriyon Knighton's 19.49 didn't come in a huge proper world championship stadium either.
I tried to looking up the weather conditions for the 1:55 pm start time. Can an Aussie tell me if this weather station ios right near the stadium?
It looks like the wind would have definitely been a diagonal wind. But it says it was coming out of the NW or N whereas I think an ideal would would have been out of the N / NE.
