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1,387

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different orbit paths every 91 days by

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ICESat-2. The orbit pattern creates a dense grid over the

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poles, all anchored here at the Greenland Summit Observatory.

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Since each orbital path will repeat every three 

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months, scientists will be able to observe changing between seasons.

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The more frequent measurements of the polar regions will give us a more

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detailed look at retreating glaciers, melting ice sheets and

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thinning sea ice and the global impacts of those changes.

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