Monday, December 14, 2009

Hoar Frost

Every week our northern life seems to have a new surprise in store for us. Ice fog and hoar frost are just two of the newest additions to our Yukon vocabulary. Ice fog, it turns out, is literally ice-depositing fog. Think of it as the arctic equivalent of freezing rain with the added bonus of being as thick as pea soup.

Hoar frost, though related to ice fog, is a little more appealing. Yes, it makes the roads a bit slick and is virtually impossible to scrape off your windows, but man, is it beautiful. It ranges from fine and fuzzy like a peach, to coarse and feathery.

Hoar frost happens when exposed objects rapidly lose heat, becoming colder than the air around them. Moisture from the air is then deposited in the form of leafy ice crystals. Okay, I'm no meteorologist so here's a link to a good Wikipedia explanation. And here are a few pictures from a recent walk in our "back yard".

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