The study indicates that the contribution of the ice sheets to recent sea-level rise during the decade studied was much smaller than expected, just two percent of the recent increase of nearly three millimeters a year. Continuing research using NASA satellites and other data will narrow the uncertainties in this important issue.

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That record is getting long enough that it has pretty good accuracy.

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Some of the glaciers are accelerating, and that has happened mostly in the last five, at most ten, years. There are significant changes going on.

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