UK & World News
Ice Sheet Melting Triples In 20 Years
The planet's two largest ice sheets are melting three times faster today than they were in the 1990s, according to a new study.
The most accurate analysis of satellite measurements to date showed that the Antarctic and Greenland ice sheets have lost four trillion tons of ice since 1992.
The melt water has added 11.1mm to global sea levels.
But the scientists warned that the rate of ice loss is accelerating. Figures published in the journal Science show that melting ice now adds 0.95mm a year to sea levels, compared to 0.27mm in the 1990s.
Study leader Professor Andrew Shepherd told Sky News: "This is hugely significant. Ice loss has tripled in 20 years. What will happen in the next 20, 40, 60 years?"
Even small sea level changes are a substantial threat to low-lying areas, particularly during storm surges.
"Low-lying areas need to consider infrastructure now," said Professor Shepherd.
"London will have to build a new flood barrier in the next century. It would take 30 years to build, so planning needs to start soon."
Much of the rise in sea levels is due to thermal expansion from warmer water. But melting ice sheets now contribute 30% to the overall rise, compared to just 10% in the 1990s.
Until now there has been uncertainty over how a warmer world was affecting the ice on the Greenland and Antarctic land masses.
Some studies have suggested the amount of ice has increased; others have indicated substantial losses.
But the new research used data from 10 different satellite missions to precisely measure the thickness of the ice sheets.
The observations should lead to more accurate predictions of the effects of climate change.
Professor Richard Alley, a climate scientist at Penn State University in the US, said: "This project is a spectacular achievement.
"The data ... will lead to a better understanding of how sea level change may depend on the human decisions that influence global temperatures."
what do you think?
Great we can have Cruises along The Great North Passage . Not all doom then.
Greens will be shouting for more tax. Watched a program on discovery about the KT astroid that wiped out the Dinosaurs it pumped 30,000 times more CO into the atmosphere than all of what modern man ever has to date ???? Makes u wonder whoever does the sums makes them fit their own agenda !!?
yep. 20 to 30 thousand times more co2 and no massive increase in temp.. just one of the many facts people are starting to become aware of.
Great more tax move them to England always freezing here
Yes yes we've heard it all before. The planets doomed unless we are heavily taxed through our carbon emissions. Like we think 200 years of heavy industry has really made am impact. Truth of the matter is all The landscape warming as the sun gets hotter. No no but we can save our planet if we pay for it. Ha ha! Biggest con in human history.
All of the planets are warming up and theres Jack we can do about it. We are insignificant!
Were all dooooomed mr jimmyjed Doooooomed I tell you Wish it would hurry up could do with some sun on my back Oh btw on the program today it said a decent sized asteroid hits plant earth regularly every 100 yrs last one was 1908 so guess what ???? Yep were due a biggy tax or no tax
Yer i agree with the sun theory.
Jimmy. I agree. All the main political parties have warmly embraced this theory for the very reason you suggest. They see tax raising opportunities in it.
So the ice is melting what are we going to do? Maybe we could all freeze some more in our freezers...or better still take some jcbs to the ice caps and move it all to the coolest places thus preserving the ice.
Our planet is definitely changing. Is it something mankind has done? ? Or is mother nature and no matter what we do it can't be stopped? ? No one can actually answer that question with 100% certainty. But if governments can make money by scaremongering us they will.
"No one can actually answer that question with 100% certainty". So right. Apart from the enviromentalists. They seem pretty sure of their 'facts'..
Joseph Stalin used to say ........Create fear in the nation and you can pass any law you want
These news agencies want to get their act together The story I saw said it was the arctic icecap that was melting fastest with little or no change in the antarctic
Even IF it was proved 100% that it was carbon emissions causing it, people wouldn't be prepared to change just leave it to the next generations to cope with.