Quote:
Originally Posted by GenKreton
At -40F you can get snow but without nuclei, but it's nothing like the snow we commonly experience - it's significantly smaller.
|
"Ice fog"? I've seen it on the prairies in extreme cold. I'm sure Peakster can talk about it.
Speaking of snow nuclei (don't say that very often), I happened to see this news item yesterday:
Quote:
Bacteria key ingredient in snow, scientists say
Research done on snow samples from Yukon, Antarctica, France, Montana
Last Updated: Thursday, February 28, 2008 | 10:33 PM ET
The Associated Press
Those beautiful snowflakes drifting out of the sky may have a surprise inside — bacteria.
Most snow and rain forms in chilly conditions high in the sky and atmospheric scientists have long known that, under most conditions, the moisture needs something to cling to in order to condense.
Now, a new study shows a surprisingly large share of those so-called nucleators turn out to be bacteria that can affect plants.
"Bacteria are by far the most active ice nuclei in nature," said Brent C. Christner, an assistant professor of biological sciences at Louisiana State University.
http://www.cbc.ca/technology/story/2...-bacteria.html
|