McAlester News-Capital, McAlester, OK

Features

July 16, 2013

Sea levels may increase more than 6 feet for each degree of global warming

LONDON —

Sea levels may rise by more than 2 meters (6.6 feet) for each degree Celsius of global warming the planet experiences over the next 2,000 years, according to a study by researchers in five nations.
The research, published Monday in the Proceedings of the National Academy of Sciences, attempts to iron out the impact of short-term fluctuations in sea levels, examining changes over a longer term for which forecasts are more certain.
The findings signal that melting of ice in the Antarctic will take over from thermal expansion, where warmer water occupies more space, as the main cause of rising seas. In the worst-case scenario examined, a temperature gain of 4 degrees Celsius (7.2 Fahrenheit) would result in seas rising by about 9 meters since industrialization began in the 18th century.
"Continuous sea-level rise is something we cannot avoid unless global temperatures go down," Anders Levermann, the lead author of the study, said by email from the Potsdam Institute for Climate Impact Research in Germany, where he is based. "We need to adapt. Sea-level rise might be slow on time scales on which we elect governments, but it is inevitable and therefore highly relevant for almost everything we build along our coastlines, for many generations to come."
Temperatures already have climbed about 0.8 degree and seas have risen about 17 centimeters since the industrial revolution, according to the United Nations. When temperature gains reach 1 degree, the world will be committed to sea levels about 2.3 meters higher over two millennia, according to the study in the journal of the Washington-based National Academy of Sciences.
 About 1.6 meters of that will come from ice melting in Antarctica, 40 centimeters from the natural expansion of the sea as it gets warmer, 20 centimeters from mountain glaciers and 10 centimeters from Greenland, it said.
In the 4-degree scenario, Antarctica would add 4.8 meters to sea levels over 2,000 years, thermal expansion would contribute 1.7 meters and mountain glaciers and small ice caps would add 45 centimeters.
Greenland would contribute 2.1 meters, though it would be destabilized to the point that a further 4.9 meters is possible if all the ice there melted over the next few thousand years.
Researchers from Germany, the United States, Canada, Spain and Austria also contributed to the study. They used computer models and analysis of past trends in sea levels derived from sediments and raised ancient shorelines to make their predictions.
 
 
 
 

1
Text Only | Photo Reprints
Features
Seasonal Content
AP Video
Rodents Rampant in Gardens Around Louvre House to Vote on Slimmed-down Bill for Border Looming Demand Could Undercut Flight Safety Raw: 2 Shells Hit Fuel Tank at Gaza Power Plant Raw: Massive Explosions From Airstrikes in Gaza Giant Ketchup Bottle Water Tower Up for Sale Easier Nuclear Construction Promises Fall Short Kerry: Humanitarian Cease-fire Efforts Continue Raw: Corruption Trial Begins for Former Va Gov. The Carbon Trap: US Exports Global Warming UN Security Council Calls for Gaza Cease-fire Traditional African Dishes Teach Healthy Eating 13 Struck by Lightning on Calif. Beach Baseball Hall of Famers Inducted Israel, Hamas Trade Fire Despite Truce in Gaza Italy's Nibali Set to Win First Tour De France Raw: Shipwrecked Concordia Completes Last Voyage Raw: Sea Turtle Hatchlings Emerge From Nest Raw: Massive Dust Storm Covers Phoenix 12-hour Cease-fire in Gaza Fighting Begins
NDN Video
'Hunger Games: Mockingjay Part 1' Sneak Peek NOW TRENDING: Peyton Manning dancing at practice Golden Sisters on '50 Shades' trailer: 'Look At That Chest!' Chapter Two: Designing for Naomi Watts "The Bachelorette" Makes Her Decision Thieves pick the wrong gas station to rob Staten Island Man's Emotional Dunk Over NYPD Car - @TheBuzzeronFOX GMA: Dog passes out from excitment to see owner Baseball Hall of Famers Inducted Florida Keys Webcam Captures Turtles Hatching Morgan Freeman Sucks Down Helium on 'Tonight Show' Robin Wright Can Dance! (WATCH) She's Back! See Paris Hilton's New Carl's Jr. Ad Big Weekend For Atlanta Braves In Cooperstown - @TheBuzzeronFox Chapter Two: Becoming a first-time director What's Got Jack Black Freaking Out at Comic-Con? Doctors Remove 232 Teeth From Teen's Mouth Bradley Cooper Explains His Voice in 'Guardians of the Galaxy' Deja vu: Another NYPD officer choke-holding a suspect 'Fifty Shades of Grey': Watch the Super Sexy First Trailer Now!
Parade
Magazine

Click HERE to read all your Parade favorites including Hollywood Wire, Celebrity interviews and photo galleries, Food recipes and cooking tips, Games and lots more.