Summary: | Arctic sea-ice extent has decreased dramatically in the past decades. It set the record low in September, 2012, and reached the sixth lowest coverage in September 17, 2014. How sea-ice melting in the Arctic would cause changes in atmospheric circulations and weathers has been an important topic in t. Arctic sea-ice extent has decreased dramatically in the past decades. It set the record low in September, 2012, and reached the sixth lowest coverage in September 17, 2014. How sea-ice melting in the Arctic would cause changes in atmospheric circulations and weathers has been an important topic in t. 北京大学、北京市教育委员会、韩国高等教育财团 1
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