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Old 03-23-2009, 04:49 PM   #1
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Default Linking Climate Change in Siberia and Britain

(PhysOrg.com) -- Scientists have for first time demonstrated a critical link between the Siberian climate and the circulation of the major current system which gives us our mild winters here in the UK. This new understanding of what is happening, made by Bangor University scientists working on a Natural Environment Research Council research programme led by University College London, is explained in the prestigious American journal, Geophysical Research Letters.

Using the data collected in 2007, Bangor University's scientists have now found an important link between the river flow into the continental shelf seas off Eurasia and the dilution of the North Atlantic water as it passes through the Arctic Ocean. This change in temperature and salinity in turn, potentially impacts on the flow of the northern part of the Gulf Stream.

"Whilst the Arctic Ocean is in nobody's backyard, it plays a major role in determining UK climate through its influence on the major ocean current systems," said Dr Tom Rippeth, who leads Bangor University's team at the School of Ocean Sciences.

“The Arctic is also being hit hard by climate change. Average temperatures globally have risen by less than 1 degree C. But in the Arctic, average temperatures have risen by 3 degrees C in the last few decades. Rivers flow has increased as a result, both through thawing of the permafrost and increased rainfall.”

"What we have shown is that the changes we've seen in the Atlantic water as it passes through the Arctic Ocean can only be attributed to the dilution of this water by water from the shallower continental seas. A result which links the continent to global ocean circulation,” adds Rippeth.

These important new results highlight the climatic importance of the Eurasian shelf seas and will help improve climate models and so contribute to better forecasts of future impacts of climate change.

Full article here:
http://www.physorg.com/news157013032.html
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