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\nNASA Studies Details of a Greening Arctic\n

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\n\nPublisher:\n\nNASA\n\n\n
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\nNASA scientists used almost 30 years of data from the NASA/U.S. Geological Survey Landsat satellites to track changes in vegetation in Alaska and Canada. Of the more than 4 million square miles, 30 percent had increases in vegetation...\nNASA scientists used almost 30 years of data from the NASA/U.S. Geological Survey Landsat satellites to track changes in vegetation in Alaska and Canada. Of the more than 4 million square miles, 30 percent had increases in vegetation (greening) while only 3 percent had decreases (browning).

Temperatures are warming faster in the Arctic than elsewhere, which has led to longer seasons for plants to grow in and changes to the soils. Scientists have observed grassy tundras changing to shrublands, and shrubs growing bigger and denser – changes that could have impacts on regional water, energy, and carbon cycles. With the large, continental-scale map complete, researchers will focus on the more human scale – looking at local conditions to see what might control the greening patterns, whether it's local topography, nearby water sources, or particular types of habitat. They also plan to investigate forested areas, particularly in the greening Quebec.

More information:
Credit: NASA's Goddard Space Flight Center/Matthew Radcliff
Music: \"Alaska,\" by Janik Riegert [GEMA], Josh Tapen [GEMA]








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Educator Rating
Not yet Rated
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Media Length
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1:30
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Grade
3rd - 11th
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Subjects
All Subjects
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Media Type
Instructional Videos
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Source:
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\nNASA Goddard\n\n
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Date
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2016
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Language
English
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Audiences
For Teacher Use
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Fine Print: Educational Use
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climate change, global warming
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ndvi, arctic, vegetation growth, matthew radcliff
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