File:ShipTracks.jpg

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DescriptionShipTracks.jpg	English: Visible ship tracks in the Nothern Pacific, on March 4th 2009. On an overcast day, the clouds look uniform. However, NASA MODIS images' sesor reveals long skinny trails of brighter clouds hidden within. As ships travel across the ocean, pollution in the ships' exhaust create more cloud drops that are smaller in size, resulting in even brighter clouds. On clear days, ships can actually create new clouds. Water vapor condenses around the particles of pollution, forming streamers of clouds as the ships travel on. The ship tracks themselves are too small to impact global temperatures, but they help us understand how larger pollution sources such as industrial sites or agricultural burning might be changing clouds on a larger scale.
Date	4 March 2009
Source	https://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=3667
Author	NASA

	This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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