NASA: Vast Antarctic ice shelf a few years from disintegration

NASA has found that the last section of Antarctica’s Larsen B Ice Shelf is likely to disintegrate before the end of the decade. Transcript: We know that this ice shelf existed for at least 11 to 12 thousand years. In 2002, two-thirds of it collapsed in less than six weeks. In the intervening period between…

Ocean May Be Melting Totten Glacier Says Study

Ocean access to a cavity beneath Totten Glacier in East Antarctica http://www.nature.com/ngeo/journal/v8/n4/full/ngeo2388.html Totten Glacier, the primary outlet of the Aurora Subglacial Basin, has the largest thinning rate in East Antarctica1, 2. Thinning may be driven by enhanced basal melting due to ocean processes3, modulated by polynya activity4, 5. Warm modified Circumpolar Deep Water, which has…

ScienceCasts: Climate Change and the Yin-Yang of Polar Sea Ice


Arctic and Antarctic sea ice are both affected by climate change, but the two poles of Earth are behaving in intriguingly different ways.

Visit http://science.nasa.gov/ for more.

Why Increasing Antarctic Sea Ice Doesn’t Mean Climate Change Isn’t Happening http://www.businessinsider.com/antarctic-sea-ice-climate-change-2014-12

Why is Antarctic sea ice expanding?

By Laura Naranjo (NSIDC), first published January 31, 2014. In the following  an edited version, reposted here with permission. Antarctic sea ice is ruled by very different systems than Arctic sea ice. The reasons behind this increase are complex, and several recent studies show that scientists are still trying to understand them. Ice and wind Atmospheric…

New mechanism uncovered, causing potentially rapid Antarctic Glacier melt

An Australian-led research team found that sea levels may rise much faster than previously predicted by models, because changes by disruptive westerly winds, weren’t taken into account. Conservative estimates so far, projected irreversible melting in the course of a few centuries, depending on the temperature increase. Related Each degree of global warming might ultimately raise…

The Runaway Glaciers in West Antarctica

NASA/JPL press release, May 12, 2014: A new study by researchers at NASA and the University of California, Irvine, finds a rapidly melting section of the West Antarctic Ice Sheet appears to be in an irreversible state of decline, with nothing to stop the glaciers in this area from melting into the sea. The study presents…

The Antarctic Half of the Global Thermohaline Circulation is Collapsing

By FishOutOfWater (DailyKos): The largest source of the coldest water in the world’s oceans ceased producing Antarctic Bottom Water in 1976. The surface water around Antarctica, which has be been freshening since the 1950’s, formed a lid of low-density water stopping the overturning process in the Weddell sea near the coast of Antarctica. The Weddell…

The Earth without Ice (Deglaciation – Sea Level Rise)

Last year the National Geographic looked how the continents do with no ice on Earth. IF ALL THE ICE MELTED Explore the world’s new coastlines if sea level rises 216 feet. The maps here show the world as it is now, with only one difference: All the ice on land has melted and drained into…

Antarctica’s ice loss on the rise (December 2013)

Published 11 December 2013 | Release URL (ESA CryoSat) Three years of observations by ESA’s CryoSat satellite show that the West Antarctic Ice Sheet is losing over 150 cubic kilometres of ice each year – considerably more than when last surveyed. The imbalance in West Antarctica continues to be dominated by ice losses from glaciers flowing…

Extensive ice in Antarctica

Released by National Snow and Ice Data Center | Access date January 4, 2013. While it is early winter in the Arctic, it is early summer in the Antarctic. Continuing patterns seen in recent years, Antarctic sea ice extent remains unusually high, near or above previous daily maximum values for each day in November. Sea ice…

Why is Antarctic sea ice growing?

Published on Nov 8, 2012: Suggestions that modest increases in sea ice around Antarctica offset significant losses in Arctic sea ice are based on a bogus “apples and oranges” comparison. Through interviews with a range of respected experts, Peter Sinclair’s newest Yale Forum video explains why such suggestions do not stand up to scientific scrutiny. Related…

Chris Hayes & Michael E Mann: There’s Global Warming – And It’s Snowing

Chris Hayes from MSNBC talks to Michael E Mann about global warming deniers and the season we call “winter.” Release with full segment URL Chris Mooney in MotherJones: 1. Statements about climate trends must be based on, er, trends. Not individual events or occurrences. Weather is not climate, and anecdotes are not statistics. 2. Global warming is actually…

Abrupt Climate Change In The Arctic (And Beyond) An Update

AGU Fall Meeting 2013: Our understanding of future Arctic change is informed by the history of past changes, which often have been both large and abrupt. The well-known ice-age events such as the Younger Dryas show how sea-ice changes can amplify forcing to produce very large responses, with wintertime sea ice especially important. These changes…