A large problem in making predictions about Antarctic melting is that we currently have insufficient knowledge about the ocean circulation near large glaciers in West Antarctica. This means that researchers cannot predict how water levels will change in the future with any large degree of certainty. 

What is known is that the ice sheet in West Antarctica is melting faster than expected, and new observations published by oceanographers in Nature Geoscience may improve the ability to predict future changes in ice sheet mass. 

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