One of Antarctica's most unstable glaciers may be thinning faster than previously thought - NBCNewsMACH
“We have surface observations from satellites that go back quite far, but for the subsurface — what’s happening underneath the ice sheet — the record is not as expansive and doesn’t go back as far,” Schroeder said.
Eric Rignot, a University of California glaciologist who was not involved with the new study, hailed the research and said it showed how historical data could improve the accuracy of glacier research. “It makes a world of difference,” Rignot said of historical data. “It’s dangerous to interpret changes based on a few years of data. The long records give us insight into decadal variability and long-term trends. In climate science, you’re not happy with five years, or even 10 years. If you have several decades of data, you feel like now you can see things clearly.”
Rignot said scientists could conduct similar research on polar regions using other historic data, including archival footage taken of Antarctica’s coastline by the U.S. military in 1947.and they took aerial photos of almost the entire coastline of Antarctica,” he said. “It was probably the first time that mankind explored the entire periphery of the continent. This data has been recently digitized and made public.
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