Farmers market

Worse Than We Thought

Posted in Articles, Climate Change, Environmentally Friendly, Farmers market, General, Helpful Hints, Life & Environment, News, Oceans, Physical sciences, Science, electricity on February 13th, 2010 by Al's Journal – Be the first to comment
Winter sea ice terrain of the Beaufort Sea - A...
Image via Wikipedia

More evidence of the climate crisis is unfolding before our eyes. The situation in the Arctic is worse than data from satellite pictures have told us:

“For scientists studying the health of Arctic sea ice, satellite observations are absolutely essential for providing the big picture. It was satellites that revealed in September 2007 a record minimum ice coverage in the region — the result of a massive summer melt. And it was satellites that showed in 2008 and 2009 the modest recovery of late-summer Arctic ice that suggested to some that the specter of a totally ice-free polar ocean might be somewhat less imminent than feared.”

“But those high-altitude observations need occasional reality checks from scientists down on the surface. It was during one such on-the-ground research expedition last fall that David Barber, an Arctic climatologist at the University of Manitoba, got an unwelcome surprise.”

“Barber was aboard the Canadian research icebreaker Amundsen, checking on ice in the Beaufort Sea north of Alaska and Western Canada. The ship was well inside a region the satellites said should be choked with thick, multiyear-old ice. “That’s pretty much a no-go zone for an icebreaker of the Amundsen’s size,” says Barber. But the ship kept going, at a brisk 13 knots — its top speed in open water is 13.7 knots — and even when it finally reached thick ice, he says, “we could still penetrate it easily.”"

“In short, as Barber and his colleagues explain in a recent paper in Geophysical Review Letters, the analysis of what the satellites were seeing was wrong. Some of what satellites identified as thick, melt-resistant multiyear ice turned out to be, in Barber’s words, “full of holes, like Swiss cheese. We haven’t seen this sort of thing before.”"

Reblog this post [with Zemanta]

Reg Morrison – A fresh perspective on life

Posted in Articles, Farmers market, Science, food, garden on November 25th, 2009 by Wayne C – Be the first to comment

Farewell, the honey bee?

Image by Artcatcher via Flickr

The wholesale disappearance of bees, sometimes called the Vanishing Bee Syndrome or Colony Collapse Disorder, has resulted in the loss of a quarter of all managed honey-bee colonies in the US since 1990. And a growing number of European and Asian nations, have reported similar declines.

Despite intensive research, the collapse of US bee populations remains largely unexplained. Two species of mite have been implicated in some of this carnage, but about a quarter of the current decline seems unrelated to any specific cause.

Reg Morrison – A fresh perspective on life.

Reblog this post [with Zemanta]