Instead, the researchers found that, in the past million years global warming events have occurred every second or third cycle of the Earth's changing obliquity, which occurs every 41,000 years.
Hellstrom said that the new knowledge may assist in calibrating the effectiveness of current climate modelling technology.
"Any improvement we can have in understanding how the Earth's orbital parameters affect our coming in and out of ice ages can certainly affect the models used now too."
The team are now using their measurements to investigate the provocative idea that the glacial melting periods actually began in the Southern Hemisphere.
Tuesday, August 18, 2009
Wobbling Earth Triggers Climate Change
Posted by Ben Cunningham at 7:15 AM