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| subject: | Re: Heading for the middle Pliocene? |
From: "Mark"
I'm not worried Rich, the toughest part will be breaching Geo.'s perimeter
"Rich Gauszka" wrote in message
news:45186e84{at}w3.nls.net...
> Wonder if Mark's house is on stilts?
>
> http://news.yahoo.com/s/ap/20060925/ap_on_sc/global_warming_5
>
> The Earth has been warming at a rate of 0.36 degree Fahrenheit per decade
> for the last 30 years, according to the research team led by James Hansen
> of NASA's Goddard Institute for Space Studies in New York.
>
> That brings the overall temperature to the warmest in the current
> interglacial period, which began about 12,000 years ago.
>
> The researchers noted that a report in the journal Nature found that 1,700
> plant, animal and insect species moved poleward at an average rate of
> about 4 miles per decade in the last half of the 20th century.
>
> The warming has been stronger in the far north, where melting ice and snow
> expose darker land and rocks beneath allowing more warmth from the sun to
> be absorbed, and more over land than water.
>
> Water changes temperature more slowly than land because of its great
> capacity to hold heat, but the researchers noted that the warming has been
> marked in the Indian and western Pacific Oceans. Those oceans have a major
> effect on climate and warming that could lead to more El Nino episodes
> affecting the weather.
>
> "This evidence implies that we are getting close to dangerous levels of
> human-made pollution," Hansen said in a statement.
>
> Few scientists doubt that the planet has warmed, though some question the
> causes of the change.
>
> Hansen, who first warned of the danger of climate change decades ago, said
> that human-made greenhouse gases have become the dominant climate change
> factor.
>
> The study said the recent warming has brought global temperature to a
> level within about one degree Celsius - 1.8 degree Fahrenheit - of the
> maximum temperature of the past million years.
>
> "If further global warming reaches 2 or 3 degrees Celsius, we will likely
> see changes that make Earth a different planet than the one we know. The
> last time it was that warm was in the middle Pliocene, about 3 million
> years ago, when sea level was estimated to have been about 25 meters (80
> feet) higher than today," Hansen said.
>
>
>
>
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