Antarctic ice sheet 2013

In 2012, the temperature records for the ice sheet were reanalyzed with a conclusion that since 1958, the West Antarctic ice sheet had warmed by 2.4 °C (4.3 °F), almost double the previous estimate. Some scientists now fear that the WAIS could now collapse like the Larsen B Ice Shelf did in 2002.

On December 1, 2011, the West Antarctic Ice Sheet (WAIS) Divide ice core project, funded by the National Science Foundation (NSF), reached its final depth of 3405 meters (11,171 feet; over 2 miles), recovering the longest U.S. ice core to date from the polar regions.

A new NASA study says that an increase in Antarctic snow accumulation that began 10,000 years ago is currently adding enough ice to the continent to outweigh the increased losses from its thinning glaciers. An ice shelf is a thick suspended platform of ice that forms where a glacier or ice sheet flows down to a coastline and onto the ocean surface. Ice shelves are only found in Antarctica, Greenland, Canada, and the Russian Arctic. The Antarctic ice sheet is one of the two polar ice caps of the Earth.It covers about 98% of the Antarctic continent and is the largest single mass of ice on Earth. It covers an area of almost 14 million square kilometres (5.4 million square miles) and contains 26.5 million cubic kilometres (6,400,000 cubic miles) of ice. Jun 13, 2018 · The East Antarctic Ice Sheet (EAIS) is the largest potential contributor to sea-level rise. However, efforts to predict the future evolution of the EAIS are hindered by uncertainty in how it ... Sep 27, 2013 · One of the last big unknowns in the global climate equation is Antarctica. How stable is the Antarctic ice sheet? More than a mile thick, on average, it locks up 70 percent of the Earth's fresh water.

Jul 24, 2013 · The East Antarctic ice sheet, home to the South Pole, is the largest ice mass on Earth and one of two large sheets blanketing Antarctica.Scientists have generally agreed that the ice sheet’s ... Sunlight glared off of the Antarctic Ice Sheet. Slawek Tulaczyk, a 46-year-old glaciologist, squinted in the slanted summer rays as he watched a drama unfold 600 feet away. A Hercules military cargo plane sat stranded, unable to take off. Its skis had frozen to the snow. The plane had just dropped ... Jun 04, 2019 · The 2100 H median projection of 1.1 m falls midway between the AR5 projection of 0.7 m and the 1.5 m that Kopp et al. projected using the Antarctic ice sheet projections of DeConto and Pollard , which provided an initial attempt at explicit, continental-scale physical modeling of ice shelf hydrofracturing and marine ice cliff instability. The mean thickness of the Antarctic ice sheet is 2.16 km; the maximum known thickness of the ice sheet is 4776 m (Terre Adélie). Without the ice, Antarctica may be the lowest lying continent; the greatest known depression of bedrock is the Byrd Subglacial Basin, at 2538 m below sea level. Satellite observations have transformed our knowledge of the Antarctic Ice Sheet (AIS) (Vaughan et al., 2013) and are now an important observational constraint for numerical simulations of its response to future climate change (Shepherd & Nowicki, 2017).