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  Contrails over Portugal and Spain

Contrails over Portugal and Spain
Image credit: NASA

Uploader comment: The condensation trails that form behind high-altitude aircraft, or contrails, are one of the most visible signs of the human impact on the atmosphere. On February 15, 2013, the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this view of numerous contrails over Portugal and Spain.


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March 13, 2013, 5:27 pm
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