Friday, December 29, 2006

[glacier adrift] do you understand what's happening

I’m adrift on this issue – I just don’t know what to think.

The news: The 41 square miles Ayles Ice Shelf, one of six remaining in Canada's Arctic, broke clear 16 months ago from the coast of Ellesmere Island, with ice that is more than 3,000 years old. Within days of breaking free, the Ayles Ice Shelf had drifted about 30 miles offshore before freezing into the sea ice.

Issue 1: The obvious question is about global warming and there are opinions for and against.

Issue 2
: So, having read the above document, - if scientists can’t agree, then why do laymen use the expression: “It’s been scientifically proven?” It seems less and less has been proven as we go along. Stephen Hawking might also agree with this.

Issue 3
: I’m confused. How does an economic and political fisking of the Stern Report translate into the statement by certain bloggers that there is no global warming when it is as plain as the noses on our faces?

In an effort to understand, I came up with this:

After dropping for about 15 years, the amount of sunlight Earth reflects back into space, called albedo, has increased since 2000, a new study concludes. That means less energy is reaching the surface. Yet global temperatures have not cooled during the period. Increasing cloud cover seems to be the reason, but there must also be some other change in the clouds that's not yet understood.

The explanation continues here ...

No comments: