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Climatologist Konrad Steffen talks about the surprising speed of ice loss in Greenland. Steffen, a professor at the University of Colorado, has spent each summer for 27 years measuring changes to the Greenland ice sheet. Watch his interview.
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Mar 29, 2008 8PM #
hmm, why do you think it is called "greenland"? maybe because it used to be green? just a thought.
Mar 29, 2008 8PM #
I am very happy that I finally found a place to leave my comment. I am from Argentina and I am seventeen years old. I Always enter to the web page, because I like it a lot, and I love learning about the environment, it's something very interesting and important.
I hope you read this comment :)
Mar 29, 2008 8PM #
Dear Sirs,
a little known fact is that water needs 80 calories to pass from the solid to the liquid state. This means that Ice melt follows a catastrophic path. Melt waters on ice sheets pass calories down into the ice sheets which gradually collect enough calorific energy to reach melting point, the last calory goes in and bingo, the whole lot suddenly melts.
I calculate that at present world temperatures the ice caps will withdraw at least 100 kilometres towards the poles or 160 metres up the mountains and thin the remaining ice caps such that we can expect a minuimum sea level rise of 7 metres in as long as it takes for the extra calorific value of our atmosphere to do its job.
regards,
David
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