Posts Tagged ‘arctic’
Earth & Environment - Oct 7, 2009 10:52 - 5 Comments
Arctic sea ice’s downward trend continues
U. COLORADO (US)—Despite a slight recovery in 2009—from record-setting low years in 2007 and 2008—the summer Arctic sea ice extent remains significantly below previous years, continuing a trend toward ice-free Arctic summers. (more…)
Earth & Environment - Sep 14, 2009 14:20 - 0 Comments
Arctic heat bucks long-term trend
Since the Earth is still moving away from the sun—it’s about 0.6 million miles farther during the Northern Hemisphere summer solstice than it was in 1 B.C.—it appears greenhouse gases began “overriding” the natural cooling of Earth in the middle of the last century, explains study coauthor Gifford Miller of CU-Boulder’s Institute for Arctic and Alpine Research. “We expect the Arctic will continue to warm in the coming decades, increasing land-based ice loss and triggering global increases in sea-level rise.”
Science & Technology - Jun 3, 2009 15:32 - 0 Comments
Dark, balmy Arctic home to ancient mammals
University of Colorado at Boulder researcher Jaelyn Eberle, left, searches for early mammal fossils in the high Arctic with Brendan Postnikoff of the University of Saskatchewan (blue parka) and Joe Kudlack, right, from Banks Island in the Northwest Territories. (Credit: University of Colorado)
Earth & Environment - May 6, 2009 13:07 - 0 Comments
Arctic glider yields unrivaled under-ice data
U. WASHINGTON (US)—A seaglider’s record-breaking journey under ice is helping scientists form a more complete picture of changes taking place in Arctic waters. (more…)
Science & Technology - Mar 9, 2009 20:48 - 0 Comments
Arctic turtle fossil reveals clues to climate change
U. ROCHESTER (US)—A tropical turtle fossil discovered high in the Canadian Arctic suggests that a rapid spike in carbon dioxide some 90 million years ago created a super-greenhouse effect, raising polar temperatures rather dramatically. The find strongly suggests that animals migrated from Asia to North America not around Alaska, as once thought, but directly across a freshwater sea floating atop the warm, salty Arctic Ocean. (more…)
