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Politics : The Environmentalist Thread
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To: maceng2 who wrote (22422)7/21/2008 3:00:03 PM
From: neolib  Read Replies (1) of 36917
 
Even when you actually hit freezing, it accounts for the fact that upward facing surfaces have more frost than vertical or downward facing surfaces. All surfaces are surrounded by the same air temp, but they see radically different radiation environments. On the other hand, have you ever seen the results of a freezing fog on trees? I have some pictures of a freezing fog that continued for more than a day under breezy conditions. The buildup reflected the wind direction very dramatically. It showed no preference for vertical direction however, because of course, the sky was not visible, so there was almost no directional bias to the radiation environment, and the conduction environment of the breezy fog would overwhelm any radiation effects anyway.

In the picture below, the wind was blowing from the left. The resulting ice looks like it has been blown from the right instead, but it built up on the windward side.

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