date:Aug 12, 2014
ble explanation for the surprising finding of a strong El Nio 10,000 years ago was that some other factor was compensating for the dampening effect expected from cyclical changes in Earths orbit around the sun during that period.
The best candidate is the polar ice sheet, which was melting very fast in this period and may have increased El Nio activity by changing ocean currents, Mr Carr said.
Around 6,000 years ago most of the ice age floes would have finished melting, so the effect of Earths