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Archive for the ‘Arctic’ Category

More to Lose Than You Think When Sea Ice Is Lost

“The Arctic has warmed twice as fast as the rest of the globe in the past two decades. Sea ice in this region is melting into the ocean so rapidly that its rate exceeds most model projections. The consequences of a world with less sea ice, argue the authors of this Review, include amplification of the warming phenomenon: less sea ice means fewer surfaces to reflect sun back into the atmosphere. Thus, loss of sea ice is not just an indicator of warming, but a contributor to it as well.

Read more about this research from the 2 August issue of Science here.”


Ice sheets melting at poles faster than before

“Fueled by global warming, polar ice sheets in Greenland and Antarctica are now melting three times faster than they did in the 1990s, a new scientific study says.”

Thawing permafrost frees millions of tons of carbon: study

“…atmospheric warming and coastal erosion are gnawing at the icy seal, releasing about 40 million tonnes of carbon a year –10 times more than previously thought, said a study in the journal Nature.”

Sea ice melt is faster than predicted in worst-case climate models

“The melt was faster than even predicted in worst-case climate models, according to Michael E. Mann, an earth scientist at Penn State University who was the lead author of a major United Nations report in 2001 on climate change. “The sea ice decline is perhaps the most profound of those cautionary tales because the models have basically predicted that we shouldn’t see what we’re seeing now for several decades,” Mann said.”

Unprecedented May Heat In Greenland

“The record books for Greenland’s climate were re-written [last] Tuesday, when the mercury hit 24.8°C (76.6°F) at Narsarsuaq, Greenland, on the southern coast. According to weather records researcher Maximiliano Herrera, this is the hottest temperature on record in Greenland for May, and is just 0.7°C (1.3°F) below the hottest temperature ever measured in Greenland. The previous May record was 22.4°C (72.3°F) at Kangerlussuaq (called Sondre Stormfjord in Danish) on May 31, 1991. The 25.2°C at Narsarsuaq on June 22, 1957 is the only June temperature measured in Greenland warmer than yesterday’s 24.8°C reading. Wunderground’s extremes page shows that the all-time warmest temperature record for Greenland is 25.5°C (77.9°F) set on July 26, 1990.”

Arctic Ocean leaking alarming levels of methane

“Cracks in Arctic sea ice are leaking alarming levels of methane, a greenhouse gas far more potent than carbon dioxide, according to NASA scientists.”

Arctic Temperatures Continue Rapid Rise as 2011 Breaks Record Set in 2010

“Record Ice Loss and Tundra Melt Amplify Warming Feedbacks”

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