Water flowing into Arctic warmest in 2,000 years
February 1st, 2011 - 5:26 pm ICT by IANSLondon, Feb 1 (IANS) Water flowing from the North Atlantic Ocean into the Arctic Ocean is at its warmest level for more than 2,000 years.
The sea in the Gulf Stream between Greenland and the Norwegian archipelago of Svalbard reached an average of 6 degrees Celsius in recent summers, warmer than at natural peaks during Roman or medieval times.
Scientists fear the temperature spikes could lead to an ice-free Arctic in years to come and could endanger polar bears, who need the ice in order to survive.
Such changes could also lead to rising sea levels around the world and ‘drastic changes’ to the environment, researchers have concluded, according to the Daily Mail.
University of Colorado researcher Thomas Marchitto, study co-author, said cold sea water “is critical for the formation of sea ice, which helps to cool the planet by reflecting sunlight back to space”.
“Warmer waters could lead to major sea ice loss and drastic changes for the Arctic,” he said.
Marchitto said the study does not necessarily prove the change is man-made, but it does “strongly point toward this being an unusual event”.
As data from the water only goes back 150 years, they had to drill into sediment on the ocean’s sea bed to find organisms dating back 2,000 years.
They found that back then the temperature in the Arctic water was on average 3.4 degrees Celsius, but that has now gone up to 5.2 degrees Celsius.
Some summer temperatures have gone even higher - hitting 6 degrees Celsius at times.
The latest findings were presented at the University of Colorado in Boulder US.
- Arctic Ocean water is 'warmest it's been for more than 2,000 years' - Feb 01, 2011
- Global temperatures in 2010 warmest on record - Jul 16, 2010
- Arctic could face warmer and ice-free conditions in future - Dec 30, 2009
- Greenland ice sheet is safer than scientists previously believed - Jan 27, 2011
- Arctic sea ice level reaches second-lowest in history - Oct 06, 2011
- Melting glaciers on Arctic islands play major role in rise of sea level - Apr 21, 2011
- Warming oceans drive largest movement of marine species - Jun 26, 2011
- Arctic's sea ice melt hits second-lowest level - Oct 07, 2011
- Top 10 global weather events in 2010 - Jan 14, 2011
- 2010 warmest year on record: UN weather agency - Jan 21, 2011
- Melting ice in Canadian Arctic bigger player in sea-level rise - Apr 22, 2011
- Global warming may severely impact U.S. naval forces - Mar 13, 2011
- Arctic sea ice hits second-lowest level - Oct 05, 2011
- 2010 tied for warmest year on record - Jan 13, 2011
- Bering Sea floor sheds light on last major global warming period - Jan 05, 2011
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