Warm current that has historically caused dramatic changes in climate is experiencing an unprecedented slowdown and may be less stable than thought - with potentially severe consequencesThe warm Atlantic current linked to severe and abrupt changes in the climate in the past is now at its weakest in at least 1600 years,recent research shows. The findings, based on multiple lines of scientific evidence, and throw into question preceding predictions that a catastrophic collapse of the Gulf Stream would capture centuries to occur.
Such a collapse would see western Europe suffer far more extreme winters,sea levels rise expeditiously on the eastern seaboard of the US and would disrupt vital tropical rains. The recent research shows the current is now 15% weaker than around 400AD, an exceptionally large deviation, or that human-caused global warming is responsible for at least a significant part of the weakening.
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Source: guardian.co.uk