The Greenland Ice Sheet is the second-largest body of ice on Earth. It covers an area about five times the size of New York State and Kansas combined, and if it melts completely, oceans could rise by 20 feet. Coastal1 communities from Florida to Bangladesh would suffer extensive damage. Now, a new study is revealing just how little we understand this northern behemoth.Led by geophysicist Beata Csatho, PhD, an associate professor of geology at the University at Buffalo2, the research provides what the authors think is the first comprehensive picture of how Greenlands ice is vanishing. It suggests that current ice sheet modeling studies are too simplistic to accurately3 predict the future contributions of the entire Greenland Ice Sheet to sea level rise, and that Greenland may lose ice more rapidly in the near future than previously4 thought.The great importance of our data is that for the first time, we have a comprehensive picture of how all of Greenlands glaciers5 have changed over the past decade, Csatho says.This information is crucial for developing and validating6 numerical models that predict how the ice sheet may change and contribute to global sea level over the next few hundred years, says Cornelis J. van der Veen, PhD, professor in the Department of Geography at the University of Kansas, who played a key role in interpreting glaciological changes.The project was a massive undertaking7, using satellite and aerial data from NASAs ICESat spacecraft and Operation IceBridge field campaign to reconstruct how the height of the Greenland Ice Sheet changed at nearly 100,000 locations from 1993 to 2012.Ice loss takes place in a complex manner, with the ice sheet both melting and calving ice into the ocean.The study had two major findings: First, the scientists were able to provide new estimates of annual ice loss at high spatial8 resolution. Second, the research revealed that current models fail to accurately capture how the entire Greenland Ice Sheet is changing and contributing to rising oceans.The second point is crucial to climate change modelers.
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1 coastal adj.海岸的，沿海的，沿岸的 参考例句： The ocean waves are slowly eating away the coastal rocks.大海的波浪慢慢地侵蚀着岸边的岩石。 This country will fortify the coastal areas.该国将加大沿海区域的防御。
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