The effects of global warming are already being felt worldwide, but the Earth’s poles are suffering the worst of it. Climate researchers have built a series of models to predict what impact rising temperatures will have on the amount of sea ice in the Arctic Ocean, and it appears they didn’t make these models conservative enough. Sea ice is being depleted at triple the rate that was predicted.
The research was reported in a new study by the National Center for Atmospheric Research (NCAR) and the University of Colorado’s National Snow and Ice Data Center (NSIDC). The authors compared simulations of of past climate to current observations on land and from space. The models estimated that ice would decrease at a rate of 2.5% per decade from 1953 to 2006. But the latest observations show that ice declined at an average rate of 7.8%. In other words, the decline of sea ice is currently about 30 years ahead of schedule from what researchers were originally predicting.
Several factors could have gone into the incorrect models, such as overestimating the thickness of present-day sea ice, or misunderstanding the atmospheric and oceanic circulation that transports heat to the polar regions.
Original Source: UCAR News Release
2007-0501seaice.jpg The effects of global warming are already ……
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Dear Editor, May1/07
Recent research by Henrik Svensmark and his group at the Danish National
Space Center points to the real cause of the recent warming trend. In a
series of experiments on the formation of clouds, these scientists have
shown that fluctuations in the Sun’s output cause the observed changes in the
Earth’s temperature.
In the past, scientists believed the fluctuations in the Sun’s output were
too small to cause the observed amount of temperature change, hence the need
to look for other causes like carbon dioxide. However, these new
experiments show that fluctuations in the Sun’s output are in fact large
enough, so there is no longer a need to resort to carbon dioxide as the
cause of the recent warming trend.
The discovery of the real cause of the recent increase in the Earth’s
temperature is indeed a convenient truth. It means humans are not to blame
for the increase. It also means there is absolutely nothing we can, much
less do, to correct the situation.
Thomas Laprade
Your readers might be interested in this website
Google “The Great Global Warming Swindle.”
Oh boy, here we go again. This is getting tiring. Deniers just keep repeating the same old fallacies over and over again, even after they’ve been summarily debunked. Funny how they think one contrarian study can overnight cancel out thousands of scientific studies. Its a good thing that most of my readers are smarter than that.
http://www.realclimate.org/index.php/archives/2007/03/cosmoclimatology-tired-old-arguments-in-new-clothes/
Also, the aptly name “Great Global Warming Swindle” is a sham perpetrated by a TV Channel which has been successfully sued for similar shams i the past. The roster on that mockumentary is a who’s who of the denial PR industry. The one credible and active climatologist on that show is sueing the producer for having misrepresented their intentions, and twisted his science.
http://tragicplanet.org/2007/03/13/a-global-warming-swindle/
Give me a break. That show is a joke.
Warming from increased solar output has been shown to be about 0.14 W/sq.m., compare that to the forcing from CO2, which is about 1.6 W/sq.m.
Here’s a few hard facts:
-We’re putting billions of tons of CO2 in the atmosphere
-We have increased atmopheric CO2 concentrations by nearly 50%
-We know through experiments that CO2 causes a greenhouse effect
-The extra CO2 is also causing a measurable acidification of the oceans
What is so hard to understand in that? Stop wasting my time with this swindle non-sense.