MMiller192@aol.com MMiller192@aol.com
Thu, 30 Dec 2004 10:31:40 PST
In a message dated 12/30/2004 11:17:05 A.M. US Mountain Standard Tim,  
johnbryan@worldnet.att.net writes:

While  wind chill may have been for humans, I
am of the opinion that such does  have an effect on plants. If not I can
not fathom the effect on plants of  the same species, in the same areas,
where some were damaged others not. It  was a logical explanation, but
perhaps just the fact that there was some  protection, (out of the wind)
did make a  difference.

I remember when I took plant physiology 25 years ago one of the things that  
we learned to do was calculate the boundary layer of undisturbed air at the  
surface of a leaf at different wind speeds.  The layer is thinner at higher  
wind speed.  The boundary layer of undisturbed air slows the transport of  water 
vapor, other gases, and heat.  I would think that wind chill is also  related 
to the thickness of the boundary layer.

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