开云体育

We periodically get a wind chill temperature reported which is higher than
the air temperature. Has anyone else noticed this?

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Alan Strong
Laboratory Superintendent Tel +44 1904 432366
Department of Electronics Fax +44 1904 433247
University of York Vodapage 01 459 510730
Heslington, York Mobile 0850 295928
YO10 5DD Packet Radio BBS G3WXI @GB7CYM.#19.GBR
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In article <00dc01be746b$18568a80$1d8a2090@...>, Alan
Strong <as@...> writes

From: "Alan Strong" <as@...>

We periodically get a wind chill temperature reported which is higher than
the air temperature. Has anyone else noticed this?

Yes, it's caused by negative wind. :-)

I think you'll find that the WM918 reports wind chill to whole degrees
'C', but the actual temperature is reported to 0.1 degrees 'C' accuracy.
So, if it's calm, the wind chill can be higher.

Also, I'm not sure what formula the WM918 uses for its internal wind
chill calculation. My latest software is now calculating wind chill in
the program, based on the average wind speed over the past two minutes,
and a formula which is commonly used for wind chill calculation.

--
Roger Barker, G4IDE roger@...
Boston, UK