Antarctic sea ice likely shrunk to a record low last week, US researchers said Monday, its lowest extent in the 45 years of satellite record-keeping.
The National Snow and Ice Data Center at the University of Colorado Boulder said that Antarctica's sea ice fell to 1.79 million square kilometers on February 21.NSIDC scientists stressed that the latest figure was preliminary since further late-season melt was still possible. They said they would issue a final number on the extent of ice in early March.
"Antarctica's response to climate change has been different from the Arctic's," said Ted Scambos, a senior research scientist at the Cooperative Institute for Research in the Environmental Sciences . The Antarctic cycle undergoes significant annual variations during its summers of thawing and winters of freezing, and the continent has not experienced the rapid melting of the past four decades that plague the ice sheets of Greenland and the Arctic due to global warming.
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