Antarctic Glaciers Sprinting Seaward

Hundreds of glaciers on the Antarctic Peninsula are flowing faster, further adding to sea-level rise. This according to new research from the British Antarctic Survey. Satellite radar images reveal the flow rate of over 300 previously unstudied glaciers increased 12% in speed from 1993 to 2003. The observations echo recent findings from coastal Greenland. The United Nations Intergovernmental Panel on Climate Change (IPCC) reported in February they could not provide an upper limit on the rate of sea-level rise from Antarctica in coming centuries because of a lack of understanding of the behavior of the large ice sheets. These new results give scientists a clearer picture about the way that climate warming can affect glaciers both in the Arctic and Antarctic.

Lead author Hamish Pritchard says “The Antarctic Peninsula has experienced some of the fastest warming on Earth, nearly 3°C over the last half-century. Eighty-seven percent of its glaciers have been retreating during this period and now we see these glaciers are also speeding up. It’s important that we use tools such as satellite technology that allow us to monitor changes in remote and inaccessible glaciers on a regional scale. Understanding what’s happening now gives us our best chance of predicting what’s likely to happen in the future.” –JULIA WHITTY

  • Julia Whitty is the environmental correspondent for Mother Jones. Her latest book is Deep Blue Home: An Intimate Ecology of Our Wild Ocean. For more of her stories, click here.

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